Esempio n. 1
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def _run_step(name, restore=None, interval=0.5):
    """
    Instantiate (optionally from a checkpoint if restore is set to the
    checkpoitn name) the system and run for interval seconds of
    simulated time. At the end of the simulation interval, create a
    checkpoint and exit.

    As this function is intended to run in its own process using the
    multiprocessing framework, the exit is a true call to exit which
    terminates the process. Exit codes are used to pass information to
    the parent.
    """
    if restore is not None:
        m5.instantiate(restore)
    else:
        m5.instantiate()

    e = m5.simulate(m5.ticks.fromSeconds(interval))
    cause = e.getCause()
    if cause in _exit_limit:
        m5.checkpoint(name)
        sys.exit(_exitcode_checkpoint)
    elif cause in _exit_normal:
        sys.exit(_exitcode_done)
    else:
        print("Test failed: Unknown exit cause: %s" % cause)
        sys.exit(_exitcode_fail)
Esempio n. 2
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def benchCheckpoints_sync(options, maxreltick, cptdir):

    import socket
    quantum,port,host = options.sync.split(',')
    sync_quantum = long(quantum)
    TCP_IP = host
    TCP_PORT = int(port)
    BUFFER_SIZE = 1
    pre_tick = m5.curTick()
    try:
        s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        s.connect((TCP_IP, TCP_PORT))

        exit_event = m5.simulate(sync_quantum)
        exit_cause = exit_event.getCause()
        total_tick_simulated = sync_quantum
        num_checkpoints = 0
        max_checkpoints = options.max_checkpoints
        s.send("R")
        data = s.recv(BUFFER_SIZE)
        while total_tick_simulated <= maxreltick and\
              (exit_cause == "simulate() limit reached" or\
               exit_cause == "checkpoint"):
            if exit_cause == "checkpoint":
                m5.simulate(pre_tick + sync_quantum - m5.curTick())
                # send "C" to barrier to notify that we should take a
                # checkpoint at the begining of next quantum
                s.send("C")
            else:
                s.send("R")
            data = s.recv(BUFFER_SIZE)
            pre_tick = m5.curTick()
            exit_event = m5.simulate(sync_quantum)
            total_tick_simulated += sync_quantum
            # if we receive a "C" from barrier, start to dump a checkpoint
            if data == "C" :
                m5.checkpoint(joinpath(cptdir, "cpt.%d"))
                num_checkpoints += 1
                if num_checkpoints == max_checkpoints:
                    exit_cause = "maximum %d checkpoints dropped"\
                                 % max_checkpoints
                    break
            exit_cause = exit_event.getCause()
    except KeyboardInterrupt:
        sys.exit()
    except Exception as ex:
        print "exception %s occured." %(ex.args[1])
        sys.exit()
    return exit_event
Esempio n. 3
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def run(checkpoint_dir=m5.options.outdir):
    # start simulation (and drop checkpoints when requested)
    while True:
        event = m5.simulate()
        exit_msg = event.getCause()
        if exit_msg == "checkpoint":
            print("Dropping checkpoint at tick %d" % m5.curTick())
            cpt_dir = os.path.join(checkpoint_dir, "cpt.%d" % m5.curTick())
            m5.checkpoint(cpt_dir)
            print("Checkpoint done.")
        else:
            print(exit_msg, " @ ", m5.curTick())
            break

    sys.exit(event.getCode())
Esempio n. 4
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def benchCheckpoints(options, maxtick, cptdir):
    exit_event = m5.simulate(maxtick - m5.curTick())
    exit_cause = exit_event.getCause()

    num_checkpoints = 0
    max_checkpoints = options.max_checkpoints

    while exit_cause == "checkpoint":
        m5.checkpoint(joinpath(cptdir, "cpt.%d"))
        num_checkpoints += 1
        if num_checkpoints == max_checkpoints:
            exit_cause = "maximum %d checkpoints dropped" % max_checkpoints
            break

        exit_event = m5.simulate(maxtick - m5.curTick())
        exit_cause = exit_event.getCause()

    return exit_event
Esempio n. 5
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def run(args):
    cptdir = m5.options.outdir
    if args.checkpoint:
        print("Checkpoint directory: %s" % cptdir)

    while True:
        event = m5.simulate()
        exit_msg = event.getCause()
        if exit_msg == "checkpoint":
            print("Dropping checkpoint at tick %d" % m5.curTick())
            cpt_dir = os.path.join(m5.options.outdir, "cpt.%d" % m5.curTick())
            m5.checkpoint(os.path.join(cpt_dir))
            print("Checkpoint done.")
        else:
            print(exit_msg, " @ ", m5.curTick())
            break

    sys.exit(event.getCode())
Esempio n. 6
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def run(args):
    cptdir = m5.options.outdir
    if args.checkpoint:
        print "Checkpoint directory: %s" % cptdir

    while True:
        event = m5.simulate()
        exit_msg = event.getCause()
        if exit_msg == "checkpoint":
            print "Dropping checkpoint at tick %d" % m5.curTick()
            cpt_dir = os.path.join(m5.options.outdir, "cpt.%d" % m5.curTick())
            m5.checkpoint(os.path.join(cpt_dir))
            print "Checkpoint done."
        else:
            print exit_msg, " @ ", m5.curTick()
            break

    sys.exit(event.getCode())
Esempio n. 7
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def benchCheckpoints(options, maxtick, cptdir):
    exit_event = m5.simulate(maxtick - m5.curTick())
    exit_cause = exit_event.getCause()

    num_checkpoints = 0
    max_checkpoints = options.max_checkpoints

    while exit_cause == "checkpoint":
        m5.checkpoint(joinpath(cptdir, "cpt.%d"))
        num_checkpoints += 1
        if num_checkpoints == max_checkpoints:
            exit_cause = "maximum %d checkpoints dropped" % max_checkpoints
            break

        exit_event = m5.simulate(maxtick - m5.curTick())
        exit_cause = exit_event.getCause()

    return exit_event
Esempio n. 8
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def takeSimpointCheckpoints(simpoints, interval_length, cptdir):
    num_checkpoints = 0
    index = 0
    last_chkpnt_inst_count = -1
    for simpoint in simpoints:
        interval, weight, starting_inst_count, actual_warmup_length = simpoint
        if starting_inst_count == last_chkpnt_inst_count:
            # checkpoint starting point same as last time
            # (when warmup period longer than starting point)
            exit_cause = "simpoint starting point found"
            code = 0
        else:
            exit_event = m5.simulate()

            # skip checkpoint instructions should they exist
            while exit_event.getCause() == "checkpoint":
                print("Found 'checkpoint' exit event...ignoring...")
                exit_event = m5.simulate()

            exit_cause = exit_event.getCause()
            code = exit_event.getCode()

        if exit_cause == "simpoint starting point found":
            m5.checkpoint(
                joinpath(
                    cptdir,
                    "cpt.simpoint_%02d_inst_%d_weight_%f_interval_%d_warmup_%d"
                    % (index, starting_inst_count, weight, interval_length,
                       actual_warmup_length)))
            print("Checkpoint #%d written. start inst:%d weight:%f" %
                  (num_checkpoints, starting_inst_count, weight))
            num_checkpoints += 1
            last_chkpnt_inst_count = starting_inst_count
        else:
            break
        index += 1

    print('Exiting @ tick %i (takeSimpointCheckpoints) because %s' %
          (m5.curTick(), exit_cause))
    print("%d checkpoints taken" % num_checkpoints)
    sys.exit(code)
Esempio n. 9
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def scriptCheckpoints(options, maxtick, cptdir):
    if options.at_instruction or options.simpoint:
        checkpoint_inst = options.take_checkpoints

        # maintain correct offset if we restored from some instruction
        if options.checkpoint_restore != None:
            checkpoint_inst += options.checkpoint_restore

        print "Creating checkpoint at inst:%d" % (checkpoint_inst)
        exit_event = m5.simulate()
        exit_cause = exit_event.getCause()
        print "exit cause = %s" % exit_cause

        # skip checkpoint instructions should they exist
        while exit_cause == "checkpoint":
            exit_event = m5.simulate()
            exit_cause = exit_event.getCause()

        if exit_cause == "a thread reached checkpoint inst number" or \
            exit_cause == "sp simulation reached the interval size":
            m5.checkpoint(joinpath(cptdir, "cpt.%s.%d" % \
                    (options.bench, checkpoint_inst)))
            print "Checkpoint written."

    else:
        when, period = options.take_checkpoints.split(",", 1)
        when = int(when)
        period = int(period)
        num_checkpoints = 0

        exit_event = m5.simulate(when - m5.curTick())
        exit_cause = exit_event.getCause()
        while exit_cause == "checkpoint":
            exit_event = m5.simulate(when - m5.curTick())
            exit_cause = exit_event.getCause()

        if exit_cause == "simulate() limit reached":
            m5.checkpoint(joinpath(cptdir, "cpt.%d"))
            num_checkpoints += 1

        sim_ticks = when
        max_checkpoints = options.max_checkpoints

        while num_checkpoints < max_checkpoints and \
                exit_cause == "simulate() limit reached":
            if (sim_ticks + period) > maxtick:
                exit_event = m5.simulate(maxtick - sim_ticks)
                exit_cause = exit_event.getCause()
                break
            else:
                exit_event = m5.simulate(period)
                exit_cause = exit_event.getCause()
                sim_ticks += period
                while exit_event.getCause() == "checkpoint":
                    exit_event = m5.simulate(sim_ticks - m5.curTick())
                if exit_event.getCause() == "simulate() limit reached":
                    m5.checkpoint(joinpath(cptdir, "cpt.%d"))
                    num_checkpoints += 1

    return exit_event
Esempio n. 10
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def scriptCheckpoints(options, maxtick, cptdir):
    if options.at_instruction or options.simpoint:
        checkpoint_inst = int(options.take_checkpoints)

        # maintain correct offset if we restored from some instruction
        if options.checkpoint_restore != None:
            checkpoint_inst += options.checkpoint_restore

        print "Creating checkpoint at inst:%d" % (checkpoint_inst)
        exit_event = m5.simulate()
        exit_cause = exit_event.getCause()
        print "exit cause = %s" % exit_cause

        # skip checkpoint instructions should they exist
        while exit_cause == "checkpoint":
            exit_event = m5.simulate()
            exit_cause = exit_event.getCause()

        if exit_cause == "a thread reached the max instruction count":
            m5.checkpoint(joinpath(cptdir, "cpt.%s.%d" % \
                    (options.bench, checkpoint_inst)))
            print "Checkpoint written."

    else:
        when, period = options.take_checkpoints.split(",", 1)
        when = int(when)
        period = int(period)
        num_checkpoints = 0

        exit_event = m5.simulate(when - m5.curTick())
        exit_cause = exit_event.getCause()
        while exit_cause == "checkpoint":
            exit_event = m5.simulate(when - m5.curTick())
            exit_cause = exit_event.getCause()

        if exit_cause == "simulate() limit reached":
            m5.checkpoint(joinpath(cptdir, "cpt.%d"))
            num_checkpoints += 1

        sim_ticks = when
        max_checkpoints = options.max_checkpoints

        while num_checkpoints < max_checkpoints and \
                exit_cause == "simulate() limit reached":
            if (sim_ticks + period) > maxtick:
                exit_event = m5.simulate(maxtick - sim_ticks)
                exit_cause = exit_event.getCause()
                break
            else:
                exit_event = m5.simulate(period)
                exit_cause = exit_event.getCause()
                sim_ticks += period
                while exit_event.getCause() == "checkpoint":
                    exit_event = m5.simulate(sim_ticks - m5.curTick())
                if exit_event.getCause() == "simulate() limit reached":
                    m5.checkpoint(joinpath(cptdir, "cpt.%d"))
                    num_checkpoints += 1

    return exit_event
Esempio n. 11
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def takeSimpointCheckpoints(simpoints, interval_length, cptdir):
    num_checkpoints = 0
    index = 0
    last_chkpnt_inst_count = -1
    for simpoint in simpoints:
        interval, weight, starting_inst_count, actual_warmup_length = simpoint
        if starting_inst_count == last_chkpnt_inst_count:
            # checkpoint starting point same as last time
            # (when warmup period longer than starting point)
            exit_cause = "simpoint starting point found"
            code = 0
        else:
            exit_event = m5.simulate()

            # skip checkpoint instructions should they exist
            while exit_event.getCause() == "checkpoint":
                print "Found 'checkpoint' exit event...ignoring..."
                exit_event = m5.simulate()

            exit_cause = exit_event.getCause()
            code = exit_event.getCode()

        if exit_cause == "simpoint starting point found":
            m5.checkpoint(joinpath(cptdir,
                "cpt.simpoint_%02d_inst_%d_weight_%f_interval_%d_warmup_%d"
                % (index, starting_inst_count, weight, interval_length,
                actual_warmup_length)))
            print "Checkpoint #%d written. start inst:%d weight:%f" % \
                (num_checkpoints, starting_inst_count, weight)
            num_checkpoints += 1
            last_chkpnt_inst_count = starting_inst_count
        else:
            break
        index += 1

    print 'Exiting @ tick %i because %s' % (m5.curTick(), exit_cause)
    print "%d checkpoints taken" % num_checkpoints
    sys.exit(code)
Esempio n. 12
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def run(root, options, checkpoint_dir=m5.options.outdir):

    # start simulation (and drop checkpoints when requested)
    while True:
        event = m5.simulate()
        exit_msg = event.getCause()
        if exit_msg == "checkpoint":
            print("Dropping checkpoint at tick %d" % m5.curTick())
            cpt_dir = os.path.join(checkpoint_dir, "cpt.%d" % m5.curTick())
            m5.checkpoint(cpt_dir)
            print("Checkpoint done.")
        else:
            print(exit_msg, " @ ", m5.curTick())
            break
    switch_cpu_list = []
    if options.fast_forward:
        if options.big_cpus:
            sw_tmp_list = [(root.system.bigCluster.cpus[i],
                            root.system.bigCluster.switch_cpus[i])
                           for i in range(options.big_cpus)]
            switch_cpu_list += sw_tmp_list
        if options.mid_cpus:
            sw_tmp_list = [(root.system.midCluster.cpus[i],
                            root.system.midCluster.switch_cpus[i])
                           for i in range(options.mid_cpus)]
            switch_cpu_list += sw_tmp_list
        if options.little_cpus:
            sw_tmp_list = [(root.system.littleCluster.cpus[i],
                            root.system.littleCluster.switch_cpus[i])
                           for i in range(options.little_cpus)]
            switch_cpu_list += sw_tmp_list
        print("Shift CPU at tick %d" % m5.curTick())
        m5.switchCpus(root.system, switch_cpu_list)
        m5.stats.reset()
        event = m5.simulate()

    sys.exit(event.getCode())
Esempio n. 13
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def scriptCheckpoints(options, maxtick, cptdir):
    if options.at_instruction or options.simpoint:
        checkpoint_inst = int(options.take_checkpoints)

        # maintain correct offset if we restored from some instruction
        if options.checkpoint_restore != None:
            checkpoint_inst += options.checkpoint_restore

        print "Creating checkpoint at inst:%d" % (checkpoint_inst)
        exit_event = m5.simulate()
        exit_cause = exit_event.getCause()
        print "exit cause = %s" % exit_cause

        # skip checkpoint instructions should they exist
        while exit_cause == "checkpoint":
            exit_event = m5.simulate()
            exit_cause = exit_event.getCause()

        if exit_cause == "a thread reached the max instruction count":
            m5.checkpoint(joinpath(cptdir, "cpt.%s.%d" % \
                    (options.bench, checkpoint_inst)))
            print "Checkpoint written."

    else:
        when, period = options.take_checkpoints.split(",", 1)
        when = int(when)
        period = int(period)
        num_checkpoints = 0

        exit_event = m5.simulate(when - m5.curTick())
        exit_cause = exit_event.getCause()
        while exit_cause == "checkpoint":
            exit_event = m5.simulate(when - m5.curTick())
            exit_cause = exit_event.getCause()

        if exit_cause == "simulate() limit reached":
            # cuiwl: dump and reset stats.
            print "Checkpoint %d." % (num_checkpoints)
            m5.checkpoint(joinpath(cptdir, "cpt.%d"))
            num_checkpoints += 1

        sim_ticks = when
        max_checkpoints = options.max_checkpoints

        while num_checkpoints < max_checkpoints and \
                exit_cause == "simulate() limit reached":
            if (sim_ticks + period) > maxtick:
                exit_event = m5.simulate(maxtick - sim_ticks)
                exit_cause = exit_event.getCause()
                break
            else:
                exit_event = m5.simulate(period)
                exit_cause = exit_event.getCause()
                sim_ticks += period
                while exit_event.getCause() == "checkpoint":
                    exit_event = m5.simulate(sim_ticks - m5.curTick())
                if exit_event.getCause() == "simulate() limit reached":
                    # dump and reset stats.
                    print "Checkpoint %d." % (num_checkpoints)
                    m5.stats.dump()
                    m5.stats.reset()
                    m5.checkpoint(joinpath(cptdir, "cpt.%d"))
                    num_checkpoints += 1
        if options.stat_prefix:
          shutil.copyfile("/usr/local/google/home/cuiwl/gem5/m5out/stats.txt", "/usr/local/google/home/cuiwl/gem5/m5out/stats/" + options.stat_prefix + "_" + time.strftime("%Y%m%d") + "_" + time.strftime("%H:%M:%S") + ".txt")
        else:
          shutil.copyfile("/usr/local/google/home/cuiwl/gem5/m5out/stats.txt", "/usr/local/google/home/cuiwl/gem5/m5out/stats/none" + "_" + time.strftime("%Y%m%d") + "_" + time.strftime("%H:%M:%S") + ".txt")
    return exit_event
Esempio n. 14
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def run(options, root, testsys, cpu_class):
    if options.maxtick:
        maxtick = options.maxtick
    elif options.maxtime:
        simtime = m5.ticks.seconds(simtime)
        print "simulating for: ", simtime
        maxtick = simtime
    else:
        maxtick = m5.MaxTick

    if options.checkpoint_dir:
        cptdir = options.checkpoint_dir
    elif m5.options.outdir:
        cptdir = m5.options.outdir
    else:
        cptdir = getcwd()

    if options.fast_forward and options.checkpoint_restore != None:
        fatal("Can't specify both --fast-forward and --checkpoint-restore")

    if options.standard_switch and not options.caches:
        fatal("Must specify --caches when using --standard-switch")

    np = options.num_cpus
    max_checkpoints = options.max_checkpoints
    switch_cpus = None

    if options.prog_interval:
        for i in xrange(np):
            testsys.cpu[i].progress_interval = options.prog_interval

    if options.maxinsts:
        for i in xrange(np):
            testsys.cpu[i].max_insts_any_thread = options.maxinsts

    if cpu_class:
        switch_cpus = [
            cpu_class(defer_registration=True, cpu_id=(np + i))
            for i in xrange(np)
        ]

        for i in xrange(np):
            if options.fast_forward:
                testsys.cpu[i].max_insts_any_thread = int(options.fast_forward)
            switch_cpus[i].system = testsys
            switch_cpus[i].workload = testsys.cpu[i].workload
            switch_cpus[i].clock = testsys.cpu[0].clock
            # simulation period
            if options.maxinsts:
                switch_cpus[i].max_insts_any_thread = options.maxinsts
            # Add checker cpu if selected
            if options.checker:
                switch_cpus[i].addCheckerCpu()

        testsys.switch_cpus = switch_cpus
        switch_cpu_list = [(testsys.cpu[i], switch_cpus[i])
                           for i in xrange(np)]

    if options.standard_switch:
        if not options.caches:
            # O3 CPU must have a cache to work.
            print "O3 CPU must be used with caches"
            sys.exit(1)

        switch_cpus = [
            TimingSimpleCPU(defer_registration=True, cpu_id=(np + i))
            for i in xrange(np)
        ]
        switch_cpus_1 = [
            DerivO3CPU(defer_registration=True, cpu_id=(2 * np + i))
            for i in xrange(np)
        ]

        for i in xrange(np):
            switch_cpus[i].system = testsys
            switch_cpus_1[i].system = testsys
            switch_cpus[i].workload = testsys.cpu[i].workload
            switch_cpus_1[i].workload = testsys.cpu[i].workload
            switch_cpus[i].clock = testsys.cpu[0].clock
            switch_cpus_1[i].clock = testsys.cpu[0].clock

            # if restoring, make atomic cpu simulate only a few instructions
            if options.checkpoint_restore != None:
                testsys.cpu[i].max_insts_any_thread = 1
            # Fast forward to specified location if we are not restoring
            elif options.fast_forward:
                testsys.cpu[i].max_insts_any_thread = int(options.fast_forward)
            # Fast forward to a simpoint (warning: time consuming)
            elif options.simpoint:
                if testsys.cpu[i].workload[0].simpoint == 0:
                    fatal('simpoint not found')
                testsys.cpu[i].max_insts_any_thread = \
                    testsys.cpu[i].workload[0].simpoint
            # No distance specified, just switch
            else:
                testsys.cpu[i].max_insts_any_thread = 1

            # warmup period
            if options.warmup_insts:
                switch_cpus[i].max_insts_any_thread = options.warmup_insts

            # simulation period
            if options.maxinsts:
                switch_cpus_1[i].max_insts_any_thread = options.maxinsts

            # attach the checker cpu if selected
            if options.checker:
                switch_cpus[i].addCheckerCpu()
                switch_cpus_1[i].addCheckerCpu()

        testsys.switch_cpus = switch_cpus
        testsys.switch_cpus_1 = switch_cpus_1
        switch_cpu_list = [(testsys.cpu[i], switch_cpus[i])
                           for i in xrange(np)]
        switch_cpu_list1 = [(switch_cpus[i], switch_cpus_1[i])
                            for i in xrange(np)]

    # set the checkpoint in the cpu before m5.instantiate is called
    if options.take_checkpoints != None and \
           (options.simpoint or options.at_instruction):
        offset = int(options.take_checkpoints)
        # Set an instruction break point
        if options.simpoint:
            for i in xrange(np):
                if testsys.cpu[i].workload[0].simpoint == 0:
                    fatal('no simpoint for testsys.cpu[%d].workload[0]', i)
                checkpoint_inst = int(
                    testsys.cpu[i].workload[0].simpoint) + offset
                testsys.cpu[i].max_insts_any_thread = checkpoint_inst
                # used for output below
                options.take_checkpoints = checkpoint_inst
        else:
            options.take_checkpoints = offset
            # Set all test cpus with the right number of instructions
            # for the upcoming simulation
            for i in xrange(np):
                testsys.cpu[i].max_insts_any_thread = offset

    checkpoint_dir = None
    if options.checkpoint_restore != None:
        from os.path import isdir, exists
        from os import listdir
        import re

        if not isdir(cptdir):
            fatal("checkpoint dir %s does not exist!", cptdir)

        if options.at_instruction or options.simpoint:
            inst = options.checkpoint_restore
            if options.simpoint:
                # assume workload 0 has the simpoint
                if testsys.cpu[0].workload[0].simpoint == 0:
                    fatal('Unable to find simpoint')
                inst += int(testsys.cpu[0].workload[0].simpoint)

            checkpoint_dir = joinpath(cptdir,
                                      "cpt.%s.%s" % (options.bench, inst))
            if not exists(checkpoint_dir):
                fatal("Unable to find checkpoint directory %s", checkpoint_dir)
        else:
            dirs = listdir(cptdir)
            expr = re.compile('cpt\.([0-9]*)')
            cpts = []
            for dir in dirs:
                match = expr.match(dir)
                if match:
                    cpts.append(match.group(1))

            cpts.sort(lambda a, b: cmp(long(a), long(b)))

            cpt_num = options.checkpoint_restore

            if cpt_num > len(cpts):
                fatal('Checkpoint %d not found', cpt_num)

            ## Adjust max tick based on our starting tick
            maxtick = maxtick - int(cpts[cpt_num - 1])
            checkpoint_dir = joinpath(cptdir, "cpt.%s" % cpts[cpt_num - 1])

    m5.instantiate(checkpoint_dir)

    if options.standard_switch or cpu_class:
        if options.standard_switch:
            print "Switch at instruction count:%s" % \
                    str(testsys.cpu[0].max_insts_any_thread)
            exit_event = m5.simulate()
        elif cpu_class and options.fast_forward:
            print "Switch at instruction count:%s" % \
                    str(testsys.cpu[0].max_insts_any_thread)
            exit_event = m5.simulate()
        else:
            print "Switch at curTick count:%s" % str(10000)
            exit_event = m5.simulate(10000)
        print "Switched CPUS @ tick %s" % (m5.curTick())

        # when you change to Timing (or Atomic), you halt the system
        # given as argument.  When you are finished with the system
        # changes (including switchCpus), you must resume the system
        # manually.  You DON'T need to resume after just switching
        # CPUs if you haven't changed anything on the system level.

        m5.changeToTiming(testsys)
        m5.switchCpus(switch_cpu_list)
        m5.resume(testsys)

        if options.standard_switch:
            print "Switch at instruction count:%d" % \
                    (testsys.switch_cpus[0].max_insts_any_thread)

            #warmup instruction count may have already been set
            if options.warmup_insts:
                exit_event = m5.simulate()
            else:
                exit_event = m5.simulate(options.warmup)
            print "Switching CPUS @ tick %s" % (m5.curTick())
            print "Simulation ends instruction count:%d" % \
                    (testsys.switch_cpus_1[0].max_insts_any_thread)
            m5.drain(testsys)
            m5.switchCpus(switch_cpu_list1)
            m5.resume(testsys)

    num_checkpoints = 0
    exit_cause = ''

    # If we're taking and restoring checkpoints, use checkpoint_dir
    # option only for finding the checkpoints to restore from.  This
    # lets us test checkpointing by restoring from one set of
    # checkpoints, generating a second set, and then comparing them.
    if options.take_checkpoints and options.checkpoint_restore:
        if m5.options.outdir:
            cptdir = m5.options.outdir
        else:
            cptdir = getcwd()

    # Checkpoints being taken via the command line at <when> and at
    # subsequent periods of <period>.  Checkpoint instructions
    # received from the benchmark running are ignored and skipped in
    # favor of command line checkpoint instructions.
    if options.take_checkpoints != None:
        if options.at_instruction or options.simpoint:
            checkpoint_inst = int(options.take_checkpoints)

            # maintain correct offset if we restored from some instruction
            if options.checkpoint_restore != None:
                checkpoint_inst += options.checkpoint_restore

            print "Creating checkpoint at inst:%d" % (checkpoint_inst)
            exit_event = m5.simulate()
            print "exit cause = %s" % (exit_event.getCause())

            # skip checkpoint instructions should they exist
            while exit_event.getCause() == "checkpoint":
                exit_event = m5.simulate()

            if exit_event.getCause() == \
                   "a thread reached the max instruction count":
                m5.checkpoint(joinpath(cptdir, "cpt.%s.%d" % \
                        (options.bench, checkpoint_inst)))
                print "Checkpoint written."
                num_checkpoints += 1

            if exit_event.getCause() == "user interrupt received":
                exit_cause = exit_event.getCause()
        else:
            when, period = options.take_checkpoints.split(",", 1)
            when = int(when)
            period = int(period)

            exit_event = m5.simulate(when)
            while exit_event.getCause() == "checkpoint":
                exit_event = m5.simulate(when - m5.curTick())

            if exit_event.getCause() == "simulate() limit reached":
                m5.checkpoint(joinpath(cptdir, "cpt.%d"))
                num_checkpoints += 1

            sim_ticks = when
            exit_cause = "maximum %d checkpoints dropped" % max_checkpoints
            while num_checkpoints < max_checkpoints and \
                    exit_event.getCause() == "simulate() limit reached":
                if (sim_ticks + period) > maxtick:
                    exit_event = m5.simulate(maxtick - sim_ticks)
                    exit_cause = exit_event.getCause()
                    break
                else:
                    exit_event = m5.simulate(period)
                    sim_ticks += period
                    while exit_event.getCause() == "checkpoint":
                        exit_event = m5.simulate(sim_ticks - m5.curTick())
                    if exit_event.getCause() == "simulate() limit reached":
                        m5.checkpoint(joinpath(cptdir, "cpt.%d"))
                        num_checkpoints += 1

            if exit_event.getCause() != "simulate() limit reached":
                exit_cause = exit_event.getCause()

    else:  # no checkpoints being taken via this script
        if options.fast_forward:
            m5.stats.reset()
        print "**** REAL SIMULATION ****"
        exit_event = m5.simulate(maxtick)

        while exit_event.getCause() == "checkpoint":
            m5.checkpoint(joinpath(cptdir, "cpt.%d"))
            num_checkpoints += 1
            if num_checkpoints == max_checkpoints:
                exit_cause = "maximum %d checkpoints dropped" % max_checkpoints
                break

            exit_event = m5.simulate(maxtick - m5.curTick())
            exit_cause = exit_event.getCause()

    if exit_cause == '':
        exit_cause = exit_event.getCause()
    print 'Exiting @ tick %i because %s' % (m5.curTick(), exit_cause)

    if options.checkpoint_at_end:
        m5.checkpoint(joinpath(cptdir, "cpt.%d"))
Esempio n. 15
0
def run(options, root, testsys, cpu_class):
# NOTE: this function is called from example from configs/example/ruby_fs.py 
# like this: "Simulation.run(options, root, system, FutureClass)"
# so, "system" is "testsys" here;

    if options.maxtick:
        maxtick = options.maxtick
    elif options.maxtime:
        simtime = m5.ticks.seconds(simtime)
        print "simulating for: ", simtime
        maxtick = simtime
    else:
        maxtick = m5.MaxTick

    if options.checkpoint_dir:
        cptdir = options.checkpoint_dir
    elif m5.options.outdir:
        cptdir = m5.options.outdir
    else:
        cptdir = getcwd()

    if options.fast_forward and options.checkpoint_restore != None:
        fatal("Can't specify both --fast-forward and --checkpoint-restore")

    if options.standard_switch and not options.caches:
        fatal("Must specify --caches when using --standard-switch")

    np = options.num_cpus
    max_checkpoints = options.max_checkpoints
    switch_cpus = None

    if options.prog_interval:
        for i in xrange(np):
            testsys.cpu[i].progress_interval = options.prog_interval

    if options.maxinsts:
        for i in xrange(np):
            testsys.cpu[i].max_insts_any_thread = options.maxinsts

    if cpu_class:
        switch_cpus = [cpu_class(defer_registration=True, cpu_id=(np+i))
                       for i in xrange(np)]

        for i in xrange(np):
            if options.fast_forward:
                testsys.cpu[i].max_insts_any_thread = int(options.fast_forward)
            switch_cpus[i].system =  testsys
            if not buildEnv['FULL_SYSTEM']:
                switch_cpus[i].workload = testsys.cpu[i].workload
            switch_cpus[i].clock = testsys.cpu[0].clock
            # simulation period
            if options.maxinsts:
                switch_cpus[i].max_insts_any_thread = options.maxinsts

        testsys.switch_cpus = switch_cpus
        switch_cpu_list = [(testsys.cpu[i], switch_cpus[i]) for i in xrange(np)]

    if options.standard_switch:
        if not options.caches:
            # O3 CPU must have a cache to work.
            print "O3 CPU must be used with caches"
            sys.exit(1)

        switch_cpus = [TimingSimpleCPU(defer_registration=True, cpu_id=(np+i))
                       for i in xrange(np)]
        switch_cpus_1 = [DerivO3CPU(defer_registration=True, cpu_id=(2*np+i))
                        for i in xrange(np)]

        for i in xrange(np):
            switch_cpus[i].system =  testsys
            switch_cpus_1[i].system =  testsys
            if not buildEnv['FULL_SYSTEM']:
                switch_cpus[i].workload = testsys.cpu[i].workload
                switch_cpus_1[i].workload = testsys.cpu[i].workload
            switch_cpus[i].clock = testsys.cpu[0].clock
            switch_cpus_1[i].clock = testsys.cpu[0].clock

            # if restoring, make atomic cpu simulate only a few instructions
            if options.checkpoint_restore != None:
                testsys.cpu[i].max_insts_any_thread = 1
            # Fast forward to specified location if we are not restoring
            elif options.fast_forward:
                testsys.cpu[i].max_insts_any_thread = int(options.fast_forward)
            # Fast forward to a simpoint (warning: time consuming)
            elif options.simpoint:
                if testsys.cpu[i].workload[0].simpoint == 0:
                    fatal('simpoint not found')
                testsys.cpu[i].max_insts_any_thread = \
                    testsys.cpu[i].workload[0].simpoint
            # No distance specified, just switch
            else:
                testsys.cpu[i].max_insts_any_thread = 1

            # warmup period
            if options.warmup_insts:
                switch_cpus[i].max_insts_any_thread =  options.warmup_insts

            # simulation period
            if options.maxinsts:
                switch_cpus_1[i].max_insts_any_thread = options.maxinsts

        testsys.switch_cpus = switch_cpus
        testsys.switch_cpus_1 = switch_cpus_1
        switch_cpu_list = [(testsys.cpu[i], switch_cpus[i]) for i in xrange(np)]
        switch_cpu_list1 = [(switch_cpus[i], switch_cpus_1[i]) for i in xrange(np)]

    # set the checkpoint in the cpu before m5.instantiate is called
    if options.take_checkpoints != None and \
           (options.simpoint or options.at_instruction):
        offset = int(options.take_checkpoints)
        # Set an instruction break point
        if options.simpoint:
            for i in xrange(np):
                if testsys.cpu[i].workload[0].simpoint == 0:
                    fatal('no simpoint for testsys.cpu[%d].workload[0]', i)
                checkpoint_inst = int(testsys.cpu[i].workload[0].simpoint) + offset
                testsys.cpu[i].max_insts_any_thread = checkpoint_inst
                # used for output below
                options.take_checkpoints = checkpoint_inst
        else:
            options.take_checkpoints = offset
            # Set all test cpus with the right number of instructions
            # for the upcoming simulation
            for i in xrange(np):
                testsys.cpu[i].max_insts_any_thread = offset

    checkpoint_dir = None
    if options.checkpoint_restore != None:
        from os.path import isdir, exists
        from os import listdir
        import re

        if not isdir(cptdir):
            fatal("checkpoint dir %s does not exist!", cptdir)

        if options.at_instruction or options.simpoint:
            inst = options.checkpoint_restore
            if options.simpoint:
                # assume workload 0 has the simpoint
                if testsys.cpu[0].workload[0].simpoint == 0:
                    fatal('Unable to find simpoint')
                inst += int(testsys.cpu[0].workload[0].simpoint)

            checkpoint_dir = joinpath(cptdir,
                                      "cpt.%s.%s" % (options.bench, inst))
            if not exists(checkpoint_dir):
                fatal("Unable to find checkpoint directory %s", checkpoint_dir)
        else:
            dirs = listdir(cptdir)
            expr = re.compile('cpt\.([0-9]*)')
            cpts = []
            for dir in dirs:
                match = expr.match(dir)
                if match:
                    cpts.append(match.group(1))

            cpts.sort(lambda a,b: cmp(long(a), long(b)))

            cpt_num = options.checkpoint_restore

            if cpt_num > len(cpts):
                fatal('Checkpoint %d not found', cpt_num)

            ## Adjust max tick based on our starting tick
            maxtick = maxtick - int(cpts[cpt_num - 1])
            checkpoint_dir = joinpath(cptdir, "cpt.%s" % cpts[cpt_num - 1])

    m5.instantiate(checkpoint_dir)

    if options.standard_switch or cpu_class:
        if options.standard_switch:
            print "Switch at instruction count:%s" % \
                    str(testsys.cpu[0].max_insts_any_thread)
            exit_event = m5.simulate()
        elif cpu_class and options.fast_forward:
            print "Switch at instruction count:%s" % \
                    str(testsys.cpu[0].max_insts_any_thread)
            exit_event = m5.simulate()
        else:
            print "Switch at curTick count:%s" % str(10000)
            exit_event = m5.simulate(10000)
        print "Switched CPUS @ tick %s" % (m5.curTick())

        # when you change to Timing (or Atomic), you halt the system
        # given as argument.  When you are finished with the system
        # changes (including switchCpus), you must resume the system
        # manually.  You DON'T need to resume after just switching
        # CPUs if you haven't changed anything on the system level.

        m5.changeToTiming(testsys)
        m5.switchCpus(switch_cpu_list)
        m5.resume(testsys)

        if options.standard_switch:
            print "Switch at instruction count:%d" % \
                    (testsys.switch_cpus[0].max_insts_any_thread)

            #warmup instruction count may have already been set
            if options.warmup_insts:
                exit_event = m5.simulate()
            else:
                exit_event = m5.simulate(options.warmup)
            print "Switching CPUS @ tick %s" % (m5.curTick())
            print "Simulation ends instruction count:%d" % \
                    (testsys.switch_cpus_1[0].max_insts_any_thread)
            m5.drain(testsys)
            m5.switchCpus(switch_cpu_list1)
            m5.resume(testsys)

    num_checkpoints = 0
    exit_cause = ''

    # If we're taking and restoring checkpoints, use checkpoint_dir
    # option only for finding the checkpoints to restore from.  This
    # lets us test checkpointing by restoring from one set of
    # checkpoints, generating a second set, and then comparing them.
    if options.take_checkpoints and options.checkpoint_restore:
        if m5.options.outdir:
            cptdir = m5.options.outdir
        else:
            cptdir = getcwd()

    # Checkpoints being taken via the command line at <when> and at
    # subsequent periods of <period>.  Checkpoint instructions
    # received from the benchmark running are ignored and skipped in
    # favor of command line checkpoint instructions.
    if options.take_checkpoints != None :
        if options.at_instruction or options.simpoint:
            checkpoint_inst = int(options.take_checkpoints)

            # maintain correct offset if we restored from some instruction
            if options.checkpoint_restore != None:
                checkpoint_inst += options.checkpoint_restore

            print "Creating checkpoint at inst:%d" % (checkpoint_inst)
            exit_event = m5.simulate()
            print "exit cause = %s" % (exit_event.getCause())

            # skip checkpoint instructions should they exist
            while exit_event.getCause() == "checkpoint":
                exit_event = m5.simulate()

            if exit_event.getCause() == \
                   "a thread reached the max instruction count":
                m5.checkpoint(joinpath(cptdir, "cpt.%s.%d" % \
                        (options.bench, checkpoint_inst)))
                print "Checkpoint written."
                num_checkpoints += 1

            if exit_event.getCause() == "user interrupt received":
                exit_cause = exit_event.getCause();
        else:
            when, period = options.take_checkpoints.split(",", 1)
            when = int(when)
            period = int(period)

            exit_event = m5.simulate(when)
            while exit_event.getCause() == "checkpoint":
                exit_event = m5.simulate(when - m5.curTick())

            if exit_event.getCause() == "simulate() limit reached":
                m5.checkpoint(joinpath(cptdir, "cpt.%d"))
                num_checkpoints += 1

            sim_ticks = when
            exit_cause = "maximum %d checkpoints dropped" % max_checkpoints
            while num_checkpoints < max_checkpoints and \
                    exit_event.getCause() == "simulate() limit reached":
                if (sim_ticks + period) > maxtick:
                    exit_event = m5.simulate(maxtick - sim_ticks)
                    exit_cause = exit_event.getCause()
                    break
                else:
                    exit_event = m5.simulate(period)
                    sim_ticks += period
                    while exit_event.getCause() == "checkpoint":
                        exit_event = m5.simulate(sim_ticks - m5.curTick())
                    if exit_event.getCause() == "simulate() limit reached":
                        m5.checkpoint(joinpath(cptdir, "cpt.%d"))
                        num_checkpoints += 1

            if exit_event.getCause() != "simulate() limit reached":
                exit_cause = exit_event.getCause();

    else: # no checkpoints being taken via this script
        if options.fast_forward:
            m5.stats.reset()
        print "**** REAL SIMULATION ****"
        #exit_event = m5.simulate(maxtick)


        # --Note1: Ruby is created in ruby_fs.py by 
        # "Ruby.create_system(options, system, system.piobus, system._dma_devices)"
        # which assigned: "stats_filename = options.ruby_stats";
        # definition of "create_system" is in configs/ruby/Ruby.py, which
        # instantiate the ctor of RubySystem: "system.ruby = RubySystem(...)";
        #print testsys.ruby._cpu_ruby_ports 
        #print testsys.ruby.network.ni_flit_size
        #print testsys.ruby.profiler.ruby_system
        # the ctor of RubySystem is defined in src/mem/ruby/system/RubySystem.py;
        # which sets some defaults:
        #print testsys.ruby.stats_filename # i.e., ruby.stats
        #print testsys.ruby.type
        #print testsys.ruby.random_seed
        #print testsys.ruby.clock
        #print testsys.ruby.block_size_bytes
        #print testsys.ruby.mem_size
        #print testsys.ruby.no_mem_vec

        # () cris: description of changes
        # --Note2: initially writing into ruby.stats was done with overwriting;
        # so, for each dump point the file was re-written; to fix that I
        # changed function "OutputDirectory::create(...)" from src/base/output.cc
        # which is called by "RubyExitCallback::process()" from src/mem/ruby/system/System.cc
        # function that is the one called at the end of the gem5 run
        # as a calback to dump all ruby stats (callback is "registered" in the
        # ctor of RubySystem::RubySystem() inside the same file...); 
        # --Note3: using doExitCleanup inspired from src/python/m5/simulate.py 
        # (inside which ini and json files are created; you need to rebuild each
        # time you change that Python file):
        #m5.internal.core.doExitCleanup( False) #clear callback queue?
        # --Note4: python/m5/internal/core.py describes "m5.internal.core";

        # cris: here I want to dump stats every other delta ticks;
        # I need these to be able to generate reliability traces;
        
        NUM_OF_DUMPS = 100
        num_i = 0
        delta = maxtick/NUM_OF_DUMPS
        sim_ticks = m5.curTick()
        while (m5.curTick() < maxtick):
            sim_ticks += delta
            exit_event = m5.simulate(sim_ticks - m5.curTick())
            if exit_event.getCause() == "simulate() limit reached":
                #--Note5: "doExitCleanup()" is described in src/sim/core.cc;
                # I changed it to be able to call it multiple times;
                #--Note6: do not dump stats in ruby.stats for last iteration 
                # because it will be repeated once more via the exit callbacks
                # in src/python/m5/simulate.py...
                # Note6: next call of doExitCleanup does actually also reset/clear
                # the stats of ruby system via the RubyExitCallback::process() in
                # src/mem/ruby/system/System.cc
                if num_i < (NUM_OF_DUMPS-1):
                    print "Dumping also ruby stats at inst %d to file: ruby.stats" %(num_i)
                    m5.internal.core.doExitCleanup( False) #clear callback queue?
                print "Dumping gem5 stats at inst %d to file: stats.txt" %(num_i)
                # --Note7: dump() wites into stats.txt; dump() is defined in
                # src/python/m5/stats/__init__.py and does its 
                # thing via the functions described in base/stats/text.cc
                #atexit.register(stats.dump) <--- does not work (from simulate.py)
                m5.stats.dump()
                m5.stats.reset() # <--- what does it actually do?
                num_i += 1
                

        # alex's changes:
	#while exit_event.getCause() != "m5_exit instruction encountered":
	#    m5.stats.dump()
	#    m5.stats.reset()
	#    exit_event = m5.simulate(maxtick)

        #while exit_event.getCause() == "checkpoint":
        #    m5.checkpoint(joinpath(cptdir, "cpt.%d"))
        #    num_checkpoints += 1
        #    if num_checkpoints == max_checkpoints:
        #        exit_cause = "maximum %d checkpoints dropped" % max_checkpoints
        #        break
        #    exit_event = m5.simulate(maxtick - m5.curTick())
        #    exit_cause = exit_event.getCause()

    if exit_cause == '':
        exit_cause = exit_event.getCause()
    print 'Exiting @ tick %i because %s' % (m5.curTick(), exit_cause)

    if options.checkpoint_at_end:
        m5.checkpoint(joinpath(cptdir, "cpt.%d"))
Esempio n. 16
0
def run(options, root, testsys, cpu_class):
    if options.maxtick:
        maxtick = options.maxtick
    elif options.maxtime:
        simtime = m5.ticks.seconds(simtime)
        print "simulating for: ", simtime
        maxtick = simtime
    else:
        maxtick = m5.MaxTick

    if options.checkpoint_dir:
        cptdir = options.checkpoint_dir
    elif m5.options.outdir:
        cptdir = m5.options.outdir
    else:
        cptdir = getcwd()

    if options.fast_forward and options.checkpoint_restore != None:
        fatal("Can't specify both --fast-forward and --checkpoint-restore")

    if options.standard_switch and not options.caches:
        fatal("Must specify --caches when using --standard-switch")

    if options.standard_switch and options.repeat_switch:
        fatal("Can't specify both --standard-switch and --repeat-switch")

    if options.repeat_switch and options.take_checkpoints:
        fatal("Can't specify both --repeat-switch and --take-checkpoints")

    np = options.num_cpus
    switch_cpus = None

    if options.prog_interval:
        for i in xrange(np):
            testsys.cpu[i].progress_interval = options.prog_interval

    if options.maxinsts:
        for i in xrange(np):
            testsys.cpu[i].max_insts_any_thread = options.maxinsts

    if options.pred_type:
        for i in xrange(np):
            testsys.cpu[i].predType = options.pred_type

    if options.global_hist_size:
        for i in xrange(np):
            testsys.cpu[i].globalHistoryBits = options.global_hist_size

    if options.global_pred_size:
        for i in xrange(np):
            testsys.cpu[i].globalPredictorSize = options.global_pred_size

    if options.local_pred_size:
        for i in xrange(np):
            testsys.cpu[i].localPredictorSize = options.local_pred_size

    if cpu_class:
        switch_cpus = [
            cpu_class(defer_registration=True, cpu_id=(i)) for i in xrange(np)
        ]

        for i in xrange(np):
            if options.fast_forward:
                testsys.cpu[i].max_insts_any_thread = int(options.fast_forward)
            switch_cpus[i].system = testsys
            switch_cpus[i].workload = testsys.cpu[i].workload
            switch_cpus[i].clock = testsys.cpu[i].clock
            # simulation period
            if options.maxinsts:
                switch_cpus[i].max_insts_any_thread = options.maxinsts
            # Add checker cpu if selected
            if options.checker:
                switch_cpus[i].addCheckerCpu()

        testsys.switch_cpus = switch_cpus
        switch_cpu_list = [(testsys.cpu[i], switch_cpus[i])
                           for i in xrange(np)]

    if options.repeat_switch:
        if options.cpu_type == "arm_detailed":
            if not options.caches:
                print "O3 CPU must be used with caches"
                sys.exit(1)

            repeat_switch_cpus = [O3_ARM_v7a_3(defer_registration=True, \
                                  cpu_id=(i)) for i in xrange(np)]
        elif options.cpu_type == "detailed":
            if not options.caches:
                print "O3 CPU must be used with caches"
                sys.exit(1)

            repeat_switch_cpus = [DerivO3CPU(defer_registration=True, \
                                  cpu_id=(i)) for i in xrange(np)]
        elif options.cpu_type == "inorder":
            print "inorder CPU switching not supported"
            sys.exit(1)
        elif options.cpu_type == "timing":
            repeat_switch_cpus = [TimingSimpleCPU(defer_registration=True, \
                                  cpu_id=(i)) for i in xrange(np)]
        else:
            repeat_switch_cpus = [AtomicSimpleCPU(defer_registration=True, \
                                  cpu_id=(i)) for i in xrange(np)]

        for i in xrange(np):
            repeat_switch_cpus[i].system = testsys
            repeat_switch_cpus[i].workload = testsys.cpu[i].workload
            repeat_switch_cpus[i].clock = testsys.cpu[i].clock

            if options.maxinsts:
                repeat_switch_cpus[i].max_insts_any_thread = options.maxinsts

            if options.checker:
                repeat_switch_cpus[i].addCheckerCpu()

        testsys.repeat_switch_cpus = repeat_switch_cpus

        if cpu_class:
            repeat_switch_cpu_list = [(switch_cpus[i], repeat_switch_cpus[i])
                                      for i in xrange(np)]
        else:
            repeat_switch_cpu_list = [(testsys.cpu[i], repeat_switch_cpus[i])
                                      for i in xrange(np)]

    if options.standard_switch:
        switch_cpus = [
            TimingSimpleCPU(defer_registration=True, cpu_id=(i))
            for i in xrange(np)
        ]
        switch_cpus_1 = [
            DerivO3CPU(defer_registration=True, cpu_id=(i)) for i in xrange(np)
        ]

        for i in xrange(np):
            switch_cpus[i].system = testsys
            switch_cpus_1[i].system = testsys
            switch_cpus[i].workload = testsys.cpu[i].workload
            switch_cpus_1[i].workload = testsys.cpu[i].workload
            switch_cpus[i].clock = testsys.cpu[i].clock
            switch_cpus_1[i].clock = testsys.cpu[i].clock

            # if restoring, make atomic cpu simulate only a few instructions
            if options.checkpoint_restore != None:
                testsys.cpu[i].max_insts_any_thread = 1
            # Fast forward to specified location if we are not restoring
            elif options.fast_forward:
                testsys.cpu[i].max_insts_any_thread = int(options.fast_forward)
            # Fast forward to a simpoint (warning: time consuming)
            elif options.simpoint:
                if testsys.cpu[i].workload[0].simpoint == 0:
                    fatal('simpoint not found')
                testsys.cpu[i].max_insts_any_thread = \
                    testsys.cpu[i].workload[0].simpoint
            # No distance specified, just switch
            else:
                testsys.cpu[i].max_insts_any_thread = 1

            # warmup period
            if options.warmup_insts:
                switch_cpus[i].max_insts_any_thread = options.warmup_insts

            # simulation period
            if options.maxinsts:
                switch_cpus_1[i].max_insts_any_thread = options.maxinsts

            # attach the checker cpu if selected
            if options.checker:
                switch_cpus[i].addCheckerCpu()
                switch_cpus_1[i].addCheckerCpu()

        testsys.switch_cpus = switch_cpus
        testsys.switch_cpus_1 = switch_cpus_1
        switch_cpu_list = [(testsys.cpu[i], switch_cpus[i])
                           for i in xrange(np)]
        switch_cpu_list1 = [(switch_cpus[i], switch_cpus_1[i])
                            for i in xrange(np)]

    # set the checkpoint in the cpu before m5.instantiate is called
    if options.take_checkpoints != None and \
           (options.simpoint or options.at_instruction):
        offset = int(options.take_checkpoints)
        # Set an instruction break point
        if options.simpoint:
            for i in xrange(np):
                if testsys.cpu[i].workload[0].simpoint == 0:
                    fatal('no simpoint for testsys.cpu[%d].workload[0]', i)
                checkpoint_inst = int(
                    testsys.cpu[i].workload[0].simpoint) + offset
                testsys.cpu[i].max_insts_any_thread = checkpoint_inst
                # used for output below
                options.take_checkpoints = checkpoint_inst
        else:
            options.take_checkpoints = offset
            # Set all test cpus with the right number of instructions
            # for the upcoming simulation
            for i in xrange(np):
                testsys.cpu[i].max_insts_any_thread = offset

    checkpoint_dir = None
    if options.checkpoint_restore != None:
        maxtick, checkpoint_dir = findCptDir(options, maxtick, cptdir, testsys)
    m5.instantiate(checkpoint_dir)

    if options.standard_switch or cpu_class:
        if options.standard_switch:
            print "Switch at instruction count:%s" % \
                    str(testsys.cpu[0].max_insts_any_thread)
            exit_event = m5.simulate()
        elif cpu_class and options.fast_forward:
            print "Switch at instruction count:%s" % \
                    str(testsys.cpu[0].max_insts_any_thread)
            exit_event = m5.simulate()
        else:
            print "Switch at curTick count:%s" % str(10000)
            exit_event = m5.simulate(10000)
        print "Switched CPUS @ tick %s" % (m5.curTick())

        # when you change to Timing (or Atomic), you halt the system
        # given as argument.  When you are finished with the system
        # changes (including switchCpus), you must resume the system
        # manually.  You DON'T need to resume after just switching
        # CPUs if you haven't changed anything on the system level.

        m5.doDrain(testsys)
        m5.changeToTiming(testsys)
        m5.switchCpus(switch_cpu_list)
        m5.resume(testsys)

        if options.standard_switch:
            print "Switch at instruction count:%d" % \
                    (testsys.switch_cpus[0].max_insts_any_thread)

            #warmup instruction count may have already been set
            if options.warmup_insts:
                exit_event = m5.simulate()
            else:
                exit_event = m5.simulate(options.standard_switch)
            print "Switching CPUS @ tick %s" % (m5.curTick())
            print "Simulation ends instruction count:%d" % \
                    (testsys.switch_cpus_1[0].max_insts_any_thread)
            m5.doDrain(testsys)
            m5.switchCpus(switch_cpu_list1)
            m5.resume(testsys)

    # If we're taking and restoring checkpoints, use checkpoint_dir
    # option only for finding the checkpoints to restore from.  This
    # lets us test checkpointing by restoring from one set of
    # checkpoints, generating a second set, and then comparing them.
    if options.take_checkpoints and options.checkpoint_restore:
        if m5.options.outdir:
            cptdir = m5.options.outdir
        else:
            cptdir = getcwd()

    if options.take_checkpoints != None:
        # Checkpoints being taken via the command line at <when> and at
        # subsequent periods of <period>.  Checkpoint instructions
        # received from the benchmark running are ignored and skipped in
        # favor of command line checkpoint instructions.
        exit_cause = scriptCheckpoints(options, maxtick, cptdir)
    else:
        if options.fast_forward:
            m5.stats.reset()
        print "**** REAL SIMULATION ****"

        # If checkpoints are being taken, then the checkpoint instruction
        # will occur in the benchmark code it self.
        if options.repeat_switch and maxtick > options.repeat_switch:
            exit_cause = repeatSwitch(testsys, repeat_switch_cpu_list, maxtick,
                                      options.repeat_switch)
        else:
            exit_cause = benchCheckpoints(options, maxtick, cptdir)

    print 'Exiting @ tick %i because %s' % (m5.curTick(), exit_cause)
    if options.checkpoint_at_end:
        m5.checkpoint(joinpath(cptdir, "cpt.%d"))
Esempio n. 17
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        tmp_cpu_list = []
        for old_cpu, new_cpu in switch_cpu_list:
            tmp_cpu_list.append((new_cpu, old_cpu))
        switch_cpu_list = tmp_cpu_list
        m5.stats.reset()

        exit_event = m5.simulate()
        exit_cause = exit_event.getCause()
        if switch_cpu_list[0][0].type == 'DerivO3CPU':
            m5.stats.dump()
elif options.simpoint_mode == "checkpoint_gen":
    exit_event = m5.simulate()
    exit_cause = exit_event.getCause()

    checkpoint_points = simple_end_points[:]
    checkpoint_points.reverse()
    while exit_cause == "simpoint starting point found":
        point_inst = checkpoint_points.pop()
        m5.checkpoint(os.path.join(options.checkpoint_dir, "simpoint.ckpt.inst.%d" % point_inst))

        if not checkpoint_points:
            exit_cause = "final simpoint checkpoint created"
            break;

        exit_event = m5.simulate()
        exit_cause = exit_event.getCause()


print "Exiting @ tick %i because %s" % (m5.curTick(), exit_cause)

Esempio n. 18
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def main():
    parser = argparse.ArgumentParser(
        description="Generic ARM big.LITTLE configuration")

    parser.add_argument("--restore-from", type=str, default=None,
                        help="Restore from checkpoint")
    parser.add_argument("--dtb", type=str, default=default_dtb,
                        help="DTB file to load")
    parser.add_argument("--kernel", type=str, default=default_kernel,
                        help="Linux kernel")
    parser.add_argument("--disk", action="append", type=str, default=[],
                        help="Disks to instantiate")
    parser.add_argument("--bootscript", type=str, default=default_rcs,
                        help="Linux bootscript")
    parser.add_argument("--atomic", action="store_true", default=False,
                        help="Use atomic CPUs")
    parser.add_argument("--kernel-init", type=str, default="/sbin/init",
                        help="Override init")
    parser.add_argument("--big-cpus", type=int, default=1,
                        help="Number of big CPUs to instantiate")
    parser.add_argument("--little-cpus", type=int, default=1,
                        help="Number of little CPUs to instantiate")
    parser.add_argument("--caches", action="store_true", default=False,
                        help="Instantiate caches")
    parser.add_argument("--last-cache-level", type=int, default=2,
                        help="Last level of caches (e.g. 3 for L3)")
    parser.add_argument("--big-cpu-clock", type=str, default="2GHz",
                        help="Big CPU clock frequency")
    parser.add_argument("--little-cpu-clock", type=str, default="1GHz",
                        help="Little CPU clock frequency")

    m5.ticks.fixGlobalFrequency()

    options = parser.parse_args()

    if options.atomic:
        cpu_config = { 'cpu' : AtomicSimpleCPU }
        big_cpu_config, little_cpu_config = cpu_config, cpu_config
    else:
        big_cpu_config = { 'cpu' : CpuConfig.get("arm_detailed"),
                           'l1i' : devices.L1I,
                           'l1d' : devices.L1D,
                           'wcache' : devices.WalkCache,
                           'l2' : devices.L2 }
        little_cpu_config = { 'cpu' : MinorCPU,
                              'l1i' : devices.L1I,
                              'l1d' : devices.L1D,
                              'wcache' : devices.WalkCache,
                              'l2' : devices.L2 }

    big_cpu_class = big_cpu_config['cpu']
    little_cpu_class = little_cpu_config['cpu']

    kernel_cmd = [
        "earlyprintk=pl011,0x1c090000",
        "console=ttyAMA0",
        "lpj=19988480",
        "norandmaps",
        "loglevel=8",
        "mem=%s" % default_mem_size,
        "root=/dev/vda1",
        "rw",
        "init=%s" % options.kernel_init,
        "vmalloc=768MB",
    ]

    root = Root(full_system=True)

    assert big_cpu_class.memory_mode() == little_cpu_class.memory_mode()
    disks = default_disk if len(options.disk) == 0 else options.disk
    system = createSystem(options.kernel, big_cpu_class.memory_mode(),
                          options.bootscript, disks=disks)

    root.system = system
    system.boot_osflags = " ".join(kernel_cmd)

    # big cluster
    if options.big_cpus > 0:
        system.bigCluster = CpuCluster()
        system.bigCluster.addCPUs(big_cpu_config, options.big_cpus,
                                  options.big_cpu_clock)


    # LITTLE cluster
    if options.little_cpus > 0:
        system.littleCluster = CpuCluster()
        system.littleCluster.addCPUs(little_cpu_config, options.little_cpus,
                                     options.little_cpu_clock)

    # add caches
    if options.caches:
        cluster_mem_bus = addCaches(system, options.last_cache_level)
    else:
        if big_cpu_class.require_caches():
            m5.util.panic("CPU model %s requires caches" % str(big_cpu_class))
        if little_cpu_class.require_caches():
            m5.util.panic("CPU model %s requires caches" %
                          str(little_cpu_class))
        cluster_mem_bus = system.membus

    # connect each cluster to the memory hierarchy
    for cluster in system._clusters:
        cluster.connectMemSide(cluster_mem_bus)

    # Linux device tree
    system.dtb_filename = SysPaths.binary(options.dtb)

    # Get and load from the chkpt or simpoint checkpoint
    if options.restore_from is not None:
        m5.instantiate(options.restore_from)
    else:
        m5.instantiate()

    # start simulation (and drop checkpoints when requested)
    while True:
        event = m5.simulate()
        exit_msg = event.getCause()
        if exit_msg == "checkpoint":
            print "Dropping checkpoint at tick %d" % m5.curTick()
            cpt_dir = os.path.join(m5.options.outdir, "cpt.%d" % m5.curTick())
            m5.checkpoint(os.path.join(cpt_dir))
            print "Checkpoint done."
        else:
            print exit_msg, " @ ", m5.curTick()
            break

    sys.exit(event.getCode())
Esempio n. 19
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def run(options, root, testsys, cpu_class):
    if options.maxtick:
        maxtick = options.maxtick
    elif options.maxtime:
        simtime = m5.ticks.seconds(simtime)
        print "simulating for: ", simtime
        maxtick = simtime
    else:
        maxtick = m5.MaxTick

    if options.checkpoint_dir:
        cptdir = options.checkpoint_dir
    elif m5.options.outdir:
        cptdir = m5.options.outdir
    else:
        cptdir = getcwd()

    if options.fast_forward and options.checkpoint_restore != None:
        fatal("Can't specify both --fast-forward and --checkpoint-restore")

    if options.standard_switch and not options.caches:
        fatal("Must specify --caches when using --standard-switch")

    np = options.num_cpus
    max_checkpoints = options.max_checkpoints
    new = None

    if options.prog_interval:
        for i in xrange(np):
            testsys.cpu[i].progress_interval = options.prog_interval

    if options.maxinsts:
        for i in xrange(np):
            testsys.cpu[i].max_insts_any_thread = options.maxinsts

    if cpu_class:
        new = [cpu_class(defer_registration=True, cpu_id=(np + i)) for i in xrange(np)]

        for i in xrange(np):
            if options.fast_forward:
                testsys.cpu[i].max_insts_any_thread = int(options.fast_forward)
            new[i].system = testsys
            if not buildEnv["FULL_SYSTEM"]:
                new[i].workload = testsys.cpu[i].workload
            new[i].clock = testsys.cpu[0].clock
            # simulation period
            if options.maxinsts:
                new[i].max_insts_any_thread = options.maxinsts

        testsys.new = new
        switch_cpu_list = [(testsys.cpu[i], new[i]) for i in xrange(np)]

    if options.standard_switch:
        if not options.caches:
            # O3 CPU must have a cache to work.
            print "O3 CPU must be used with caches"
            sys.exit(1)

        new = [TimingSimpleCPU(defer_registration=True, cpu_id=(np + i)) for i in xrange(np)]
        new_1 = [DerivO3CPU(defer_registration=True, cpu_id=(2 * np + i)) for i in xrange(np)]

        for i in xrange(np):
            new[i].system = testsys
            new_1[i].system = testsys
            if not buildEnv["FULL_SYSTEM"]:
                new[i].workload = testsys.cpu[i].workload
                new_1[i].workload = testsys.cpu[i].workload
            new[i].clock = testsys.cpu[0].clock
            new_1[i].clock = testsys.cpu[0].clock

            # if restoring, make atomic cpu simulate only a few instructions
            if options.checkpoint_restore != None:
                testsys.cpu[i].max_insts_any_thread = 1
            # Fast forward to specified location if we are not restoring
            elif options.fast_forward:
                testsys.cpu[i].max_insts_any_thread = int(options.fast_forward)
            # Fast forward to a simpoint (warning: time consuming)
            elif options.simpoint:
                if testsys.cpu[i].workload[0].simpoint == 0:
                    fatal("simpoint not found")
                testsys.cpu[i].max_insts_any_thread = testsys.cpu[i].workload[0].simpoint
            # No distance specified, just switch
            else:
                testsys.cpu[i].max_insts_any_thread = 1

            # warmup period
            if options.warmup_insts:
                new[i].max_insts_any_thread = options.warmup_insts

            # simulation period
            if options.maxinsts:
                new_1[i].max_insts_any_thread = options.maxinsts

        testsys.new = new
        testsys.new_1 = new_1
        switch_cpu_list = [(testsys.cpu[i], new[i]) for i in xrange(np)]
        switch_cpu_list1 = [(new[i], new_1[i]) for i in xrange(np)]

    # set the checkpoint in the cpu before m5.instantiate is called
    if options.take_checkpoints != None and (options.simpoint or options.at_instruction):
        offset = int(options.take_checkpoints)
        # Set an instruction break point
        if options.simpoint:
            for i in xrange(np):
                if testsys.cpu[i].workload[0].simpoint == 0:
                    fatal("no simpoint for testsys.cpu[%d].workload[0]", i)
                checkpoint_inst = int(testsys.cpu[i].workload[0].simpoint) + offset
                testsys.cpu[i].max_insts_any_thread = checkpoint_inst
                # used for output below
                options.take_checkpoints = checkpoint_inst
        else:
            options.take_checkpoints = offset
            # Set all test cpus with the right number of instructions
            # for the upcoming simulation
            for i in xrange(np):
                testsys.cpu[i].max_insts_any_thread = offset

    checkpoint_dir = None
    if options.checkpoint_restore != None:
        from os.path import isdir, exists
        from os import listdir
        import re

        if not isdir(cptdir):
            fatal("checkpoint dir %s does not exist!", cptdir)

        if options.at_instruction or options.simpoint:
            inst = options.checkpoint_restore
            if options.simpoint:
                # assume workload 0 has the simpoint
                if testsys.cpu[0].workload[0].simpoint == 0:
                    fatal("Unable to find simpoint")
                inst += int(testsys.cpu[0].workload[0].simpoint)

            checkpoint_dir = joinpath(cptdir, "cpt.%s.%s" % (options.bench, inst))
            if not exists(checkpoint_dir):
                fatal("Unable to find checkpoint directory %s", checkpoint_dir)
        else:
            dirs = listdir(cptdir)
            expr = re.compile("cpt\.([0-9]*)")
            cpts = []
            for dir in dirs:
                match = expr.match(dir)
                if match:
                    cpts.append(match.group(1))

            cpts.sort(lambda a, b: cmp(long(a), long(b)))

            cpt_num = options.checkpoint_restore

            if cpt_num > len(cpts):
                fatal("Checkpoint %d not found", cpt_num)

            ## Adjust max tick based on our starting tick
            maxtick = maxtick - int(cpts[cpt_num - 1])
            checkpoint_dir = joinpath(cptdir, "cpt.%s" % cpts[cpt_num - 1])

    m5.instantiate(checkpoint_dir)

    if options.standard_switch or cpu_class:
        if options.standard_switch:
            print "Switch at instruction count:%s" % str(testsys.cpu[0].max_insts_any_thread)
            exit_event = m5.simulate()
        elif cpu_class and options.fast_forward:
            print "Switch at instruction count:%s" % str(testsys.cpu[0].max_insts_any_thread)
            exit_event = m5.simulate()
        else:
            print "Switch at curTick count:%s" % str(10000)
            exit_event = m5.simulate(10000)
        print "Switched CPUS @ tick %s" % (m5.curTick())

        # when you change to Timing (or Atomic), you halt the system
        # given as argument.  When you are finished with the system
        # changes (including switchCpus), you must resume the system
        # manually.  You DON'T need to resume after just switching
        # CPUs if you haven't changed anything on the system level.

        m5.changeToTiming(testsys)
        m5.switchCpus(switch_cpu_list)
        m5.resume(testsys)

        if options.standard_switch:
            print "Switch at instruction count:%d" % (testsys.new[0].max_insts_any_thread)

            # warmup instruction count may have already been set
            if options.warmup_insts:
                exit_event = m5.simulate()
            else:
                exit_event = m5.simulate(options.warmup)
            print "Switching CPUS @ tick %s" % (m5.curTick())
            print "Simulation ends instruction count:%d" % (testsys.new_1[0].max_insts_any_thread)
            m5.drain(testsys)
            m5.switchCpus(switch_cpu_list1)
            m5.resume(testsys)

    num_checkpoints = 0
    exit_cause = ""

    # If we're taking and restoring checkpoints, use checkpoint_dir
    # option only for finding the checkpoints to restore from.  This
    # lets us test checkpointing by restoring from one set of
    # checkpoints, generating a second set, and then comparing them.
    if options.take_checkpoints and options.checkpoint_restore:
        if m5.options.outdir:
            cptdir = m5.options.outdir
        else:
            cptdir = getcwd()

    # Checkpoints being taken via the command line at <when> and at
    # subsequent periods of <period>.  Checkpoint instructions
    # received from the benchmark running are ignored and skipped in
    # favor of command line checkpoint instructions.
    if options.take_checkpoints != None:
        if options.at_instruction or options.simpoint:
            checkpoint_inst = int(options.take_checkpoints)

            # maintain correct offset if we restored from some instruction
            if options.checkpoint_restore != None:
                checkpoint_inst += options.checkpoint_restore

            print "Creating checkpoint at inst:%d" % (checkpoint_inst)
            exit_event = m5.simulate()
            print "exit cause = %s" % (exit_event.getCause())

            # skip checkpoint instructions should they exist
            while exit_event.getCause() == "checkpoint":
                exit_event = m5.simulate()

            if exit_event.getCause() == "a thread reached the max instruction count":
                m5.checkpoint(joinpath(cptdir, "cpt.%s.%d" % (options.bench, checkpoint_inst)))
                print "Checkpoint written."
                num_checkpoints += 1

            if exit_event.getCause() == "user interrupt received":
                exit_cause = exit_event.getCause()
        else:
            when, period = options.take_checkpoints.split(",", 1)
            when = int(when)
            period = int(period)

            exit_event = m5.simulate(when)
            while exit_event.getCause() == "checkpoint":
                exit_event = m5.simulate(when - m5.curTick())

            if exit_event.getCause() == "simulate() limit reached":
                m5.checkpoint(joinpath(cptdir, "cpt.%d"))
                num_checkpoints += 1

            sim_ticks = when
            exit_cause = "maximum %d checkpoints dropped" % max_checkpoints
            while num_checkpoints < max_checkpoints and exit_event.getCause() == "simulate() limit reached":
                if (sim_ticks + period) > maxtick:
                    exit_event = m5.simulate(maxtick - sim_ticks)
                    exit_cause = exit_event.getCause()
                    break
                else:
                    exit_event = m5.simulate(period)
                    sim_ticks += period
                    while exit_event.getCause() == "checkpoint":
                        exit_event = m5.simulate(sim_ticks - m5.curTick())
                    if exit_event.getCause() == "simulate() limit reached":
                        m5.checkpoint(joinpath(cptdir, "cpt.%d"))
                        num_checkpoints += 1

            if exit_event.getCause() != "simulate() limit reached":
                exit_cause = exit_event.getCause()

    else:  # no checkpoints being taken via this script
        if options.fast_forward:
            m5.stats.reset()
        print "**** REAL SIMULATION ****"
        exit_event = m5.simulate(maxtick)

        while exit_event.getCause() == "checkpoint":
            m5.checkpoint(joinpath(cptdir, "cpt.%d"))
            num_checkpoints += 1
            if num_checkpoints == max_checkpoints:
                exit_cause = "maximum %d checkpoints dropped" % max_checkpoints
                break

            exit_event = m5.simulate(maxtick - m5.curTick())
            exit_cause = exit_event.getCause()

    if exit_cause == "":
        exit_cause = exit_event.getCause()
    print "Exiting @ tick %i because %s" % (m5.curTick(), exit_cause)

    if options.checkpoint_at_end:
        m5.checkpoint(joinpath(cptdir, "cpt.%d"))
Esempio n. 20
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def run(options, root, testsys, cpu_class, numpids):
    if options.maxtick:
        maxtick = options.maxtick
    elif options.maxtime:
        simtime = m5.ticks.seconds(simtime)
        print "simulating for: ", simtime
        maxtick = simtime
    else:
        maxtick = m5.MaxTick

    if options.checkpoint_dir:
        cptdir = options.checkpoint_dir
    elif m5.options.outdir:
        cptdir = m5.options.outdir
    else:
        cptdir = getcwd()

    if options.fast_forward and options.checkpoint_restore != None:
        fatal("Can't specify both --fast-forward and --checkpoint-restore")

    if options.standard_switch and not options.caches:
        fatal("Must specify --caches when using --standard-switch")

    if options.standard_switch and options.repeat_switch:
        fatal("Can't specify both --standard-switch and --repeat-switch")

    if options.repeat_switch and options.take_checkpoints:
        fatal("Can't specify both --repeat-switch and --take-checkpoints")

    np = options.num_cpus
    switch_cpus = None

    if options.prog_interval:
        for i in xrange(np):
            testsys.cpu[i].progress_interval = options.prog_interval

    if options.maxinsts:
        for i in xrange(np):
            testsys.cpu[i].max_insts_any_thread = options.maxinsts

    if cpu_class:
        switch_cpus = [cpu_class(defer_registration=True, cpu_id=(i)) for i in xrange(np)]

        for i in xrange(np):
            if options.fast_forward:
                testsys.cpu[i].max_insts_any_thread = int(options.fast_forward)
            switch_cpus[i].system = testsys
            switch_cpus[i].workload = testsys.cpu[i].workload
            switch_cpus[i].clock = testsys.cpu[i].clock
            # simulation period
            if options.maxinsts:
                switch_cpus[i].max_insts_any_thread = options.maxinsts
            # Add checker cpu if selected
            if options.checker:
                switch_cpus[i].addCheckerCpu()

        testsys.switch_cpus = switch_cpus
        switch_cpu_list = [(testsys.cpu[i], switch_cpus[i]) for i in xrange(np)]

    if options.repeat_switch:
        if options.cpu_type == "arm_detailed":
            if not options.caches:
                print "O3 CPU must be used with caches"
                sys.exit(1)

            repeat_switch_cpus = [O3_ARM_v7a_3(defer_registration=True, cpu_id=(i)) for i in xrange(np)]
        elif options.cpu_type == "detailed":
            if not options.caches:
                print "O3 CPU must be used with caches"
                sys.exit(1)

            repeat_switch_cpus = [DerivO3CPU(defer_registration=True, cpu_id=(i)) for i in xrange(np)]
        elif options.cpu_type == "inorder":
            print "inorder CPU switching not supported"
            sys.exit(1)
        elif options.cpu_type == "timing":
            repeat_switch_cpus = [TimingSimpleCPU(defer_registration=True, cpu_id=(i)) for i in xrange(np)]
        else:
            repeat_switch_cpus = [AtomicSimpleCPU(defer_registration=True, cpu_id=(i)) for i in xrange(np)]

        for i in xrange(np):
            repeat_switch_cpus[i].system = testsys
            repeat_switch_cpus[i].workload = testsys.cpu[i].workload
            repeat_switch_cpus[i].clock = testsys.cpu[i].clock

            if options.maxinsts:
                repeat_switch_cpus[i].max_insts_any_thread = options.maxinsts

            if options.checker:
                repeat_switch_cpus[i].addCheckerCpu()

        testsys.repeat_switch_cpus = repeat_switch_cpus

        if cpu_class:
            repeat_switch_cpu_list = [(switch_cpus[i], repeat_switch_cpus[i]) for i in xrange(np)]
        else:
            repeat_switch_cpu_list = [(testsys.cpu[i], repeat_switch_cpus[i]) for i in xrange(np)]

    if options.standard_switch:
        switch_cpus = [TimingSimpleCPU(defer_registration=True, cpu_id=(i)) for i in xrange(np)]
        switch_cpus_1 = [DerivO3CPU(defer_registration=True, cpu_id=(i)) for i in xrange(np)]

        for i in xrange(np):
            switch_cpus[i].system = testsys
            switch_cpus_1[i].system = testsys
            switch_cpus[i].workload = testsys.cpu[i].workload
            switch_cpus_1[i].workload = testsys.cpu[i].workload
            switch_cpus[i].clock = testsys.cpu[i].clock
            switch_cpus_1[i].clock = testsys.cpu[i].clock

            # if restoring, make atomic cpu simulate only a few instructions
            if options.checkpoint_restore != None:
                testsys.cpu[i].max_insts_any_thread = 1
            # Fast forward to specified location if we are not restoring
            elif options.fast_forward:
                testsys.cpu[i].max_insts_any_thread = int(options.fast_forward)
            # Fast forward to a simpoint (warning: time consuming)
            elif options.simpoint:
                if testsys.cpu[i].workload[0].simpoint == 0:
                    fatal("simpoint not found")
                testsys.cpu[i].max_insts_any_thread = testsys.cpu[i].workload[0].simpoint
            # No distance specified, just switch
            else:
                testsys.cpu[i].max_insts_any_thread = 1

            # warmup period
            if options.warmup_insts:
                switch_cpus[i].max_insts_any_thread = options.warmup_insts

            # simulation period
            if options.maxinsts:
                switch_cpus_1[i].max_insts_any_thread = options.maxinsts

            # attach the checker cpu if selected
            if options.checker:
                switch_cpus[i].addCheckerCpu()
                switch_cpus_1[i].addCheckerCpu()

        testsys.switch_cpus = switch_cpus
        testsys.switch_cpus_1 = switch_cpus_1
        switch_cpu_list = [(testsys.cpu[i], switch_cpus[i]) for i in xrange(np)]
        switch_cpu_list1 = [(switch_cpus[i], switch_cpus_1[i]) for i in xrange(np)]

    # set the checkpoint in the cpu before m5.instantiate is called
    if options.take_checkpoints != None and (options.simpoint or options.at_instruction):
        offset = int(options.take_checkpoints)
        # Set an instruction break point
        if options.simpoint:
            for i in xrange(np):
                if testsys.cpu[i].workload[0].simpoint == 0:
                    fatal("no simpoint for testsys.cpu[%d].workload[0]", i)
                checkpoint_inst = int(testsys.cpu[i].workload[0].simpoint) + offset
                testsys.cpu[i].max_insts_any_thread = checkpoint_inst
                # used for output below
                options.take_checkpoints = checkpoint_inst
        else:
            options.take_checkpoints = offset
            # Set all test cpus with the right number of instructions
            # for the upcoming simulation
            for i in xrange(np):
                testsys.cpu[i].max_insts_any_thread = offset

    checkpoint_dir = None
    if options.checkpoint_restore != None:
        maxtick, checkpoint_dir = findCptDir(options, maxtick, cptdir, testsys)
    m5.instantiate(checkpoint_dir)

    if options.standard_switch or cpu_class:
        if options.standard_switch:
            print "Switch at instruction count:%s" % str(testsys.cpu[0].max_insts_any_thread)
            exit_event = m5.simulate(maxtick, numpids)
        elif cpu_class and options.fast_forward:
            print "Switch at instruction count:%s" % str(testsys.cpu[0].max_insts_any_thread)
            exit_event = m5.simulate(maxtick, numpids)
        else:
            print "Switch at curTick count:%s" % str(10000)
            exit_event = m5.simulate(10000)
        print "Switched CPUS @ tick %s" % (m5.curTick())

        # when you change to Timing (or Atomic), you halt the system
        # given as argument.  When you are finished with the system
        # changes (including switchCpus), you must resume the system
        # manually.  You DON'T need to resume after just switching
        # CPUs if you haven't changed anything on the system level.

        m5.changeToTiming(testsys)
        m5.switchCpus(switch_cpu_list)
        m5.resume(testsys)

        if options.standard_switch:
            print "Switch at instruction count:%d" % (testsys.switch_cpus[0].max_insts_any_thread)

            # warmup instruction count may have already been set
            if options.warmup_insts:
                exit_event = m5.simulate(maxtick, numpids)
            else:
                exit_event = m5.simulate(options.standard_switch, numpids)
            print "Switching CPUS @ tick %s" % (m5.curTick())
            print "Simulation ends instruction count:%d" % (testsys.switch_cpus_1[0].max_insts_any_thread)
            m5.drain(testsys)
            m5.switchCpus(switch_cpu_list1)
            m5.resume(testsys)

    # If we're taking and restoring checkpoints, use checkpoint_dir
    # option only for finding the checkpoints to restore from.  This
    # lets us test checkpointing by restoring from one set of
    # checkpoints, generating a second set, and then comparing them.
    if options.take_checkpoints and options.checkpoint_restore:
        if m5.options.outdir:
            cptdir = m5.options.outdir
        else:
            cptdir = getcwd()

    if options.take_checkpoints != None:
        # Checkpoints being taken via the command line at <when> and at
        # subsequent periods of <period>.  Checkpoint instructions
        # received from the benchmark running are ignored and skipped in
        # favor of command line checkpoint instructions.
        exit_cause = scriptCheckpoints(options, cptdir)
    else:
        if options.fast_forward:
            m5.stats.reset()
        print "**** REAL SIMULATION ****"

        # If checkpoints are being taken, then the checkpoint instruction
        # will occur in the benchmark code it self.
        if options.repeat_switch and maxtick > options.repeat_switch:
            exit_cause = repeatSwitch(testsys, repeat_switch_cpu_list, maxtick, options.repeat_switch)
        else:
            exit_cause = benchCheckpoints(options, maxtick, cptdir, numpids)

    print "Exiting @ tick %i because %s" % (m5.curTick(), exit_cause)
    if options.checkpoint_at_end:
        m5.checkpoint(joinpath(cptdir, "cpt.%d"))
Esempio n. 21
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def run(options, root, testsys, cpu_class):
    if options.maxtick:
        maxtick = options.maxtick
    elif options.maxtime:
        simtime = m5.ticks.seconds(simtime)
        print "simulating for: ", simtime
        maxtick = simtime
    else:
        maxtick = m5.MaxTick

    if options.checkpoint_dir:
        cptdir = options.checkpoint_dir
    elif m5.options.outdir:
        cptdir = m5.options.outdir
    else:
        cptdir = getcwd()

    if options.fast_forward and options.checkpoint_restore != None:
        fatal("Can't specify both --fast-forward and --checkpoint-restore")

    if options.standard_switch and not options.caches:
        fatal("Must specify --caches when using --standard-switch")

    if options.standard_switch and options.repeat_switch:
        fatal("Can't specify both --standard-switch and --repeat-switch")

    if options.repeat_switch and options.take_checkpoints:
        fatal("Can't specify both --repeat-switch and --take-checkpoints")

    np = options.num_cpus
    switch_cpus = None

    if options.prog_interval:
        for i in xrange(np):
            testsys.cpu[i].progress_interval = options.prog_interval

    if options.maxinsts:
        for i in xrange(np):
            testsys.cpu[i].max_insts_any_thread = options.maxinsts

    if cpu_class:
        switch_cpus = [cpu_class(switched_out=True, cpu_id=(i))
                       for i in xrange(np)]

        for i in xrange(np):
            if options.fast_forward:
                testsys.cpu[i].max_insts_any_thread = int(options.fast_forward)
            switch_cpus[i].system =  testsys
            switch_cpus[i].workload = testsys.cpu[i].workload
            switch_cpus[i].clock = testsys.cpu[i].clock
            # simulation period
            if options.maxinsts:
                switch_cpus[i].max_insts_any_thread = options.maxinsts
            # Add checker cpu if selected
            if options.checker:
                switch_cpus[i].addCheckerCpu()

        testsys.switch_cpus = switch_cpus
        switch_cpu_list = [(testsys.cpu[i], switch_cpus[i]) for i in xrange(np)]

    if options.repeat_switch:
        switch_class = getCPUClass(options.cpu_type)[0]
        if switch_class.require_caches() and \
                not options.caches:
            print "%s: Must be used with caches" % str(switch_class)
            sys.exit(1)
        if not switch_class.support_take_over():
            print "%s: CPU switching not supported" % str(switch_class)
            sys.exit(1)

        repeat_switch_cpus = [switch_class(switched_out=True, \
                                               cpu_id=(i)) for i in xrange(np)]

        for i in xrange(np):
            repeat_switch_cpus[i].system = testsys
            repeat_switch_cpus[i].workload = testsys.cpu[i].workload
            repeat_switch_cpus[i].clock = testsys.cpu[i].clock

            if options.maxinsts:
                repeat_switch_cpus[i].max_insts_any_thread = options.maxinsts

            if options.checker:
                repeat_switch_cpus[i].addCheckerCpu()

        testsys.repeat_switch_cpus = repeat_switch_cpus

        if cpu_class:
            repeat_switch_cpu_list = [(switch_cpus[i], repeat_switch_cpus[i])
                                      for i in xrange(np)]
        else:
            repeat_switch_cpu_list = [(testsys.cpu[i], repeat_switch_cpus[i])
                                      for i in xrange(np)]

    if options.standard_switch:
        switch_cpus = [TimingSimpleCPU(switched_out=True, cpu_id=(i))
                       for i in xrange(np)]
        switch_cpus_1 = [DerivO3CPU(switched_out=True, cpu_id=(i))
                        for i in xrange(np)]

        for i in xrange(np):
            switch_cpus[i].system =  testsys
            switch_cpus_1[i].system =  testsys
            switch_cpus[i].workload = testsys.cpu[i].workload
            switch_cpus_1[i].workload = testsys.cpu[i].workload
            switch_cpus[i].clock = testsys.cpu[i].clock
            switch_cpus_1[i].clock = testsys.cpu[i].clock

            # if restoring, make atomic cpu simulate only a few instructions
            if options.checkpoint_restore != None:
                testsys.cpu[i].max_insts_any_thread = 1
            # Fast forward to specified location if we are not restoring
            elif options.fast_forward:
                testsys.cpu[i].max_insts_any_thread = int(options.fast_forward)
            # Fast forward to a simpoint (warning: time consuming)
            elif options.simpoint:
                if testsys.cpu[i].workload[0].simpoint == 0:
                    fatal('simpoint not found')
                testsys.cpu[i].max_insts_any_thread = \
                    testsys.cpu[i].workload[0].simpoint
            # No distance specified, just switch
            else:
                testsys.cpu[i].max_insts_any_thread = 1

            # warmup period
            if options.warmup_insts:
                switch_cpus[i].max_insts_any_thread =  options.warmup_insts

            # simulation period
            if options.maxinsts:
                switch_cpus_1[i].max_insts_any_thread = options.maxinsts

            # attach the checker cpu if selected
            if options.checker:
                switch_cpus[i].addCheckerCpu()
                switch_cpus_1[i].addCheckerCpu()

        testsys.switch_cpus = switch_cpus
        testsys.switch_cpus_1 = switch_cpus_1
        switch_cpu_list = [(testsys.cpu[i], switch_cpus[i]) for i in xrange(np)]
        switch_cpu_list1 = [(switch_cpus[i], switch_cpus_1[i]) for i in xrange(np)]

    # set the checkpoint in the cpu before m5.instantiate is called
    if options.take_checkpoints != None and \
           (options.simpoint or options.at_instruction):
        offset = int(options.take_checkpoints)
        # Set an instruction break point
        if options.simpoint:
            for i in xrange(np):
                if testsys.cpu[i].workload[0].simpoint == 0:
                    fatal('no simpoint for testsys.cpu[%d].workload[0]', i)
                checkpoint_inst = int(testsys.cpu[i].workload[0].simpoint) + offset
                testsys.cpu[i].max_insts_any_thread = checkpoint_inst
                # used for output below
                options.take_checkpoints = checkpoint_inst
        else:
            options.take_checkpoints = offset
            # Set all test cpus with the right number of instructions
            # for the upcoming simulation
            for i in xrange(np):
                testsys.cpu[i].max_insts_any_thread = offset

    checkpoint_dir = None
    if options.checkpoint_restore != None:
        maxtick, checkpoint_dir = findCptDir(options, maxtick, cptdir, testsys)
    m5.instantiate(checkpoint_dir)

    if options.standard_switch or cpu_class:
        if options.standard_switch:
            print "Switch at instruction count:%s" % \
                    str(testsys.cpu[0].max_insts_any_thread)
            exit_event = m5.simulate()
        elif cpu_class and options.fast_forward:
            print "Switch at instruction count:%s" % \
                    str(testsys.cpu[0].max_insts_any_thread)
            exit_event = m5.simulate()
        else:
            print "Switch at curTick count:%s" % str(10000)
            exit_event = m5.simulate(10000)
        print "Switched CPUS @ tick %s" % (m5.curTick())

        m5.switchCpus(testsys, switch_cpu_list)

        if options.standard_switch:
            print "Switch at instruction count:%d" % \
                    (testsys.switch_cpus[0].max_insts_any_thread)

            #warmup instruction count may have already been set
            if options.warmup_insts:
                exit_event = m5.simulate()
            else:
                exit_event = m5.simulate(options.standard_switch)
            print "Switching CPUS @ tick %s" % (m5.curTick())
            print "Simulation ends instruction count:%d" % \
                    (testsys.switch_cpus_1[0].max_insts_any_thread)
            m5.switchCpus(testsys, switch_cpu_list1)

    # If we're taking and restoring checkpoints, use checkpoint_dir
    # option only for finding the checkpoints to restore from.  This
    # lets us test checkpointing by restoring from one set of
    # checkpoints, generating a second set, and then comparing them.
    if options.take_checkpoints and options.checkpoint_restore:
        if m5.options.outdir:
            cptdir = m5.options.outdir
        else:
            cptdir = getcwd()

    if options.take_checkpoints != None :
        # Checkpoints being taken via the command line at <when> and at
        # subsequent periods of <period>.  Checkpoint instructions
        # received from the benchmark running are ignored and skipped in
        # favor of command line checkpoint instructions.
        exit_event = scriptCheckpoints(options, maxtick, cptdir)
    else:
        if options.fast_forward:
            m5.stats.reset()
        print "**** REAL SIMULATION ****"

        # If checkpoints are being taken, then the checkpoint instruction
        # will occur in the benchmark code it self.
        if options.repeat_switch and maxtick > options.repeat_switch:
            exit_event = repeatSwitch(testsys, repeat_switch_cpu_list,
                                      maxtick, options.repeat_switch)
        else:
            exit_event = benchCheckpoints(options, maxtick, cptdir)

    print 'Exiting @ tick %i because %s' % (m5.curTick(), exit_event.getCause())
    if options.checkpoint_at_end:
        m5.checkpoint(joinpath(cptdir, "cpt.%d"))

    if not m5.options.interactive:
        sys.exit(exit_event.getCode())
        # Required for running kvm on multiple host cores.
        # Uses gem5's parallel event queue feature
        # Note: The simulator is quite picky about this number!
        root.sim_quantum = int(1e9) # 1 ms

    # Instantiate all of the objects we've created above
    m5.instantiate()

    globalStart = time.time()

    print("Running the simulation")
    exit_event = m5.simulate()

    # While there is still something to do in the guest keep executing.
    # This is needed since we exit for the ROI begin/end
    while exit_event.getCause() != "m5_exit instruction encountered":
        print("Exited because", exit_event.getCause())

        # If the user pressed ctrl-c on the host, then we really should exit
        if exit_event.getCause() == "user interrupt received":
            print("User interrupt. Exiting")
            break
        elif exit_event.getCause() == "checkpoint":
            checkpoint_dir = opts.checkpoint_dir + "/" + str(opts.num_cpus)
            m5.checkpoint(checkpoint_dir)

        print("Continuing")
        exit_event = m5.simulate()

    print("Normally exiting simulation: m5_exit instruction encountered")
Esempio n. 23
0
        exit_event = m5.simulate()
        exit_cause = exit_event.getCause()

        print 'Exiting @ tick %i because %s' % (m5.curTick(), exit_cause)
        while exit_cause != "all threads reached the max instruction count":
            exit_event = m5.simulate()
            exit_cause = exit_event.getCause()
        print 'Exiting @ tick %i because %s' % (m5.curTick(), exit_cause)
        inpipe.send("/sbin/m5 checkpoint\n")
        print 'here'
        while exit_cause != "checkpoint":
            exit_event = m5.simulate()
            exit_cause = exit_event.getCause()
        if exit_cause == "checkpoint":
            mkdir_p(options.checkpoint_dir)
            m5.checkpoint(os.path.join(options.checkpoint_dir, "cpt.%s" % options.benchmark.replace(':', '_')))
        pyterm.close_pyterm(term, inpipe)

        print 'Exiting @ tick %i because %s' % (m5.curTick(), exit_event.getCause())
        if not m5.options.interactive:
            sys.exit(exit_event.getCode())
        sys.exit(0)
    elif start_count >= len(sorted_points) and options.simpoint_mode =="fastfwd":
        inpipe.send("/sbin/m5 switchcpus\n")

        exit_event = m5.simulate()
        exit_cause = exit_event.getCause()

        if exit_cause == "switch cpus":
            print "Done fast-forwarding -- Switching to detailed CPU"
Esempio n. 24
0
def run(options, root, testsys, cpu_class):
    if options.disable_ports:
        m5.disableAllListeners()
    if options.checkpoint_dir:
        cptdir = options.checkpoint_dir
    elif m5.options.outdir:
        cptdir = m5.options.outdir
    else:
        cptdir = getcwd()

    if options.fast_forward and options.checkpoint_restore != None:
        fatal("Can't specify both --fast-forward and --checkpoint-restore")

    if options.standard_switch and not options.caches:
        fatal("Must specify --caches when using --standard-switch")

    if options.standard_switch and options.repeat_switch:
        fatal("Can't specify both --standard-switch and --repeat-switch")

    if options.repeat_switch and options.take_checkpoints:
        fatal("Can't specify both --repeat-switch and --take-checkpoints")

    np = options.num_cpus
    switch_cpus = None

    if options.prog_interval:
        for i in xrange(np):
            testsys.cpu[i].progress_interval = options.prog_interval

    if options.maxinsts:
        for i in xrange(np):
            testsys.cpu[i].max_insts_any_thread = options.maxinsts

    if cpu_class:
        switch_cpus = [
            cpu_class(switched_out=True, cpu_id=(i)) for i in xrange(np)
        ]

        for i in xrange(np):
            if options.fast_forward:
                testsys.cpu[i].max_insts_any_thread = int(options.fast_forward)
            switch_cpus[i].system = testsys
            switch_cpus[i].workload = testsys.cpu[i].workload
            switch_cpus[i].clk_domain = testsys.cpu[i].clk_domain
            switch_cpus[i].progress_interval = \
                testsys.cpu[i].progress_interval
            # simulation period
            if options.maxinsts:
                switch_cpus[i].max_insts_any_thread = options.maxinsts
            # Add checker cpu if selected
            if options.checker:
                switch_cpus[i].addCheckerCpu()

        # If elastic tracing is enabled attach the elastic trace probe
        # to the switch CPUs
        if options.elastic_trace_en:
            CpuConfig.config_etrace(cpu_class, switch_cpus, options)

        testsys.switch_cpus = switch_cpus
        switch_cpu_list = [(testsys.cpu[i], switch_cpus[i])
                           for i in xrange(np)]
        if cpu_class == getCPUClass("detailed"):
            config_O3cpu(options, testsys.switch_cpus)

    if options.repeat_switch:
        switch_class = getCPUClass(options.cpu_type)[0]
        if switch_class.require_caches() and \
                not options.caches:
            print "%s: Must be used with caches" % str(switch_class)
            sys.exit(1)
        if not switch_class.support_take_over():
            print "%s: CPU switching not supported" % str(switch_class)
            sys.exit(1)

        repeat_switch_cpus = [switch_class(switched_out=True, \
                                               cpu_id=(i)) for i in xrange(np)]

        for i in xrange(np):
            repeat_switch_cpus[i].system = testsys
            repeat_switch_cpus[i].workload = testsys.cpu[i].workload
            repeat_switch_cpus[i].clk_domain = testsys.cpu[i].clk_domain

            if options.maxinsts:
                repeat_switch_cpus[i].max_insts_any_thread = options.maxinsts

            if options.checker:
                repeat_switch_cpus[i].addCheckerCpu()

        testsys.repeat_switch_cpus = repeat_switch_cpus

        if cpu_class:
            repeat_switch_cpu_list = [(switch_cpus[i], repeat_switch_cpus[i])
                                      for i in xrange(np)]
        else:
            repeat_switch_cpu_list = [(testsys.cpu[i], repeat_switch_cpus[i])
                                      for i in xrange(np)]

    if options.standard_switch:
        timing_cpus = [
            TimingSimpleCPU(switched_out=True, cpu_id=(i)) for i in xrange(np)
        ]
        o3_cpus = [
            DerivO3CPU(switched_out=True, cpu_id=(i)) for i in xrange(np)
        ]

        config_O3cpu(options, o3_cpus)

        for i in xrange(np):
            timing_cpus[i].system = testsys
            o3_cpus[i].system = testsys
            timing_cpus[i].workload = testsys.cpu[i].workload
            o3_cpus[i].workload = testsys.cpu[i].workload
            timing_cpus[i].clk_domain = testsys.cpu[i].clk_domain
            o3_cpus[i].clk_domain = testsys.cpu[i].clk_domain

            # if restoring, make atomic cpu simulate only a few instructions
            if options.checkpoint_restore != None:
                testsys.cpu[i].max_insts_any_thread = 1
            # Fast forward to specified location if we are not restoring
            elif options.fast_forward:
                testsys.cpu[i].max_insts_any_thread = int(options.fast_forward)
            # Fast forward to a simpoint (warning: time consuming)
            elif options.simpoint:
                if testsys.cpu[i].workload[0].simpoint == 0:
                    fatal('simpoint not found')
                testsys.cpu[i].max_insts_any_thread = \
                    testsys.cpu[i].workload[0].simpoint
            # No distance specified, just switch
            else:
                testsys.cpu[i].max_insts_any_thread = 1

            # warmup period
            if options.warmup_insts:
                timing_cpus[i].max_insts_any_thread = options.warmup_insts

            # simulation period
            if options.maxinsts:
                o3_cpus[i].max_insts_any_thread = options.maxinsts

            # attach the checker cpu if selected
            if options.checker:
                timing_cpus[i].addCheckerCpu()
                o3_cpus[i].addCheckerCpu()

        testsys.timing_cpus = timing_cpus
        testsys.o3_cpus = o3_cpus
        switch_cpu_list = [(testsys.cpu[i], timing_cpus[i])
                           for i in xrange(np)]
        switch_cpu_list1 = [(timing_cpus[i], o3_cpus[i]) for i in xrange(np)]

    # set the checkpoint in the cpu before m5.instantiate is called
    if options.take_checkpoints != None and \
           (options.simpoint or options.at_instruction):
        offset = int(options.take_checkpoints)
        # Set an instruction break point
        if options.simpoint:
            for i in xrange(np):
                if testsys.cpu[i].workload[0].simpoint == 0:
                    fatal('no simpoint for testsys.cpu[%d].workload[0]', i)
                checkpoint_inst = int(
                    testsys.cpu[i].workload[0].simpoint) + offset
                testsys.cpu[i].max_insts_any_thread = checkpoint_inst
                # used for output below
                options.take_checkpoints = checkpoint_inst
        else:
            options.take_checkpoints = offset
            # Set all test cpus with the right number of instructions
            # for the upcoming simulation
            for i in xrange(np):
                testsys.cpu[i].max_insts_any_thread = offset

    if options.take_simpoint_checkpoints != None:
        simpoints, interval_length = parseSimpointAnalysisFile(
            options, testsys)

    checkpoint_dir = None
    if options.checkpoint_restore:
        cpt_starttick, checkpoint_dir = findCptDir(options, cptdir, testsys)
    m5.instantiate(checkpoint_dir)

    # Initialization is complete.  If we're not in control of simulation
    # (that is, if we're a slave simulator acting as a component in another
    #  'master' simulator) then we're done here.  The other simulator will
    # call simulate() directly. --initialize-only is used to indicate this.
    if options.initialize_only:
        return

    # Handle the max tick settings now that tick frequency was resolved
    # during system instantiation
    # NOTE: the maxtick variable here is in absolute ticks, so it must
    # include any simulated ticks before a checkpoint
    explicit_maxticks = 0
    maxtick_from_abs = m5.MaxTick
    maxtick_from_rel = m5.MaxTick
    maxtick_from_maxtime = m5.MaxTick
    if options.abs_max_tick:
        maxtick_from_abs = options.abs_max_tick
        explicit_maxticks += 1
    if options.rel_max_tick:
        maxtick_from_rel = options.rel_max_tick
        if options.checkpoint_restore:
            # NOTE: this may need to be updated if checkpoints ever store
            # the ticks per simulated second
            maxtick_from_rel += cpt_starttick
            if options.at_instruction or options.simpoint:
                warn("Relative max tick specified with --at-instruction or" \
                     " --simpoint\n      These options don't specify the " \
                     "checkpoint start tick, so assuming\n      you mean " \
                     "absolute max tick")
        explicit_maxticks += 1
    if options.maxtime:
        maxtick_from_maxtime = m5.ticks.fromSeconds(options.maxtime)
        explicit_maxticks += 1
    if explicit_maxticks > 1:
        warn("Specified multiple of --abs-max-tick, --rel-max-tick, --maxtime."\
             " Using least")
    maxtick = min([maxtick_from_abs, maxtick_from_rel, maxtick_from_maxtime])

    if options.checkpoint_restore != None and maxtick < cpt_starttick:
        fatal("Bad maxtick (%d) specified: " \
              "Checkpoint starts starts from tick: %d", maxtick, cpt_starttick)

    if options.standard_switch or cpu_class:
        if options.standard_switch:
            print "Switch at instruction count:%s" % \
                    str(testsys.cpu[0].max_insts_any_thread)
            exit_event = m5.simulate()
        elif cpu_class and options.fast_forward:
            print "Switch at instruction count:%s" % \
                    str(testsys.cpu[0].max_insts_any_thread)
            exit_event = m5.simulate()
        else:
            print "Switch at curTick count:%s" % str(10000)
            exit_event = m5.simulate(10000)
        print "Switched CPUS @ tick %s" % (m5.curTick())

        m5.switchCpus(testsys, switch_cpu_list)

        if options.standard_switch:
            print "Switch at instruction count:%d" % \
                    (testsys.timing_cpus[0].max_insts_any_thread)

            #warmup instruction count may have already been set
            if options.warmup_insts:
                exit_event = m5.simulate()
            else:
                exit_event = m5.simulate(options.standard_switch)
            print "Switching CPUS @ tick %s" % (m5.curTick())
            print "Simulation ends instruction count:%d" % \
                    (testsys.o3_cpus[0].max_insts_any_thread)
            m5.switchCpus(testsys, switch_cpu_list1)

    # If we're taking and restoring checkpoints, use checkpoint_dir
    # option only for finding the checkpoints to restore from.  This
    # lets us test checkpointing by restoring from one set of
    # checkpoints, generating a second set, and then comparing them.
    if (options.take_checkpoints or options.take_simpoint_checkpoints) \
        and options.checkpoint_restore:

        if m5.options.outdir:
            cptdir = m5.options.outdir
        else:
            cptdir = getcwd()

    if options.take_checkpoints != None:
        # Checkpoints being taken via the command line at <when> and at
        # subsequent periods of <period>.  Checkpoint instructions
        # received from the benchmark running are ignored and skipped in
        # favor of command line checkpoint instructions.
        exit_event = scriptCheckpoints(options, maxtick, cptdir)

    # Take SimPoint checkpoints
    elif options.take_simpoint_checkpoints != None:
        takeSimpointCheckpoints(simpoints, interval_length, cptdir)

    # Restore from SimPoint checkpoints
    elif options.restore_simpoint_checkpoint != None:
        restoreSimpointCheckpoint()

    else:
        if options.fast_forward:
            m5.stats.reset()
        print "**** REAL SIMULATION ****"

        # If checkpoints are being taken, then the checkpoint instruction
        # will occur in the benchmark code it self.
        if options.repeat_switch and maxtick > options.repeat_switch:
            exit_event = repeatSwitch(testsys, repeat_switch_cpu_list, maxtick,
                                      options.repeat_switch)
        else:
            exit_event = benchCheckpoints(options, maxtick, cptdir)

    print 'Exiting @ tick %i because %s' % (m5.curTick(),
                                            exit_event.getCause())
    if options.checkpoint_at_end:
        m5.checkpoint(joinpath(cptdir, "cpt.%d"))

    if not m5.options.interactive:
        sys.exit(exit_event.getCode())
Esempio n. 25
0
def run(options, root, testsys, cpu_class):
    if options.checkpoint_dir:
        cptdir = options.checkpoint_dir
    elif m5.options.outdir:
        cptdir = m5.options.outdir
    else:
        cptdir = getcwd()

    if options.fast_forward and options.checkpoint_restore != None:
        fatal("Can't specify both --fast-forward and --checkpoint-restore")

    if options.standard_switch and not options.caches:
        fatal("Must specify --caches when using --standard-switch")

    if options.standard_switch and options.repeat_switch:
        fatal("Can't specify both --standard-switch and --repeat-switch")

    if options.repeat_switch and options.take_checkpoints:
        fatal("Can't specify both --repeat-switch and --take-checkpoints")

    np = options.num_cpus
    switch_cpus = None

    if options.prog_interval:
        for i in xrange(np):
            testsys[0].cpu[i].progress_interval = options.prog_interval
            testsys[1].cpu[i].progress_interval = options.prog_interval

    if options.maxinsts:
        for i in xrange(np):
            testsys[0].cpu[i].max_insts_any_thread = options.maxinsts
            testsys[1].cpu[i].max_insts_any_thread = options.maxinsts

    if cpu_class:
        switch_cpus01 = [
            cpu_class(switched_out=True, cpu_id=(i)) for i in xrange(np)
        ]
        ncpuswitch = len(switch_cpus01)
        temp02 = [
            cpu_class(switched_out=True, cpu_id=(i + ncpuswitch))
            for i in xrange(np)
        ]
        switch_cpus = switch_cpus01 + temp02

        for i in xrange(np):
            if options.fast_forward:
                testsys[0].cpu[i].max_insts_any_thread = int(
                    options.fast_forward)
            switch_cpus[i].system = testsys[0]
            switch_cpus[i].workload = testsys[0].cpu[i].workload
            switch_cpus[i].clk_domain = testsys[0].cpu[i].clk_domain
            # simulation period
            if options.maxinsts:
                switch_cpus[i].max_insts_any_thread = options.maxinsts
            # Add checker cpu if selected
            if options.checker:
                switch_cpus[i].addCheckerCpu()
        for i in xrange(np):
            if options.fast_forward:
                testsys[1].cpu[i].max_insts_any_thread = int(
                    options.fast_forward)
            switch_cpus[i + ncpuswitch].system = testsys[1]
            switch_cpus[i + ncpuswitch].workload = testsys[1].cpu[i].workload
            switch_cpus[i +
                        ncpuswitch].clk_domain = testsys[1].cpu[i].clk_domain
            # simulation period
            if options.maxinsts:
                switch_cpus[i +
                            ncpuswitch].max_insts_any_thread = options.maxinsts
            # Add checker cpu if selected
            if options.checker:
                switch_cpus[i + ncpuswitch].addCheckerCpu()

        testsys[0].switch_cpus = switch_cpus01
        testsys[1].switch_cpus = temp02
        switch_cpu_list = [(testsys[0].cpu[i], switch_cpus[i])
                           for i in xrange(np)]
        switch_cpu_list_temp = [(testsys[1].cpu[i],
                                 switch_cpus[i + ncpuswitch])
                                for i in xrange(np)]
        switch_cpu_list = switch_cpu_list + switch_cpu_list_temp

    if options.repeat_switch:
        switch_class = getCPUClass(options.cpu_type)[0]
        if switch_class.require_caches() and \
                not options.caches:
            print "%s: Must be used with caches" % str(switch_class)
            sys.exit(1)
        if not switch_class.support_take_over():
            print "%s: CPU switching not supported" % str(switch_class)
            sys.exit(1)

        repeat_switch_cpus = [switch_class(switched_out=True, \
                                               cpu_id=(i)) for i in xrange(np*2)]

        for i in xrange(np):
            repeat_switch_cpus[i].system = testsys[0]
            repeat_switch_cpus[i].workload = testsys[0].cpu[i].workload
            repeat_switch_cpus[i].clk_domain = testsys[0].cpu[i].clk_domain

            if options.maxinsts:
                repeat_switch_cpus[i].max_insts_any_thread = options.maxinsts

            if options.checker:
                repeat_switch_cpus[i].addCheckerCpu()

        for i in xrange(np):
            repeat_switch_cpus[i + ncpuswitch].system = testsys[1]
            repeat_switch_cpus[
                i + ncpuswitch].workload = testsys[1].cpu[i].workload
            repeat_switch_cpus[
                i + ncpuswitch].clk_domain = testsys[1].cpu[i].clk_domain

            if options.maxinsts:
                repeat_switch_cpus[
                    i + ncpuswitch].max_insts_any_thread = options.maxinsts

            if options.checker:
                repeat_switch_cpus[i + ncpuswitch].addCheckerCpu()
        testsys[0].repeat_switch_cpus = []
        testsys[1].repeat_switch_cpus = []
        for j in xrange(np * 2):
            if j < np:
                testsys[0].repeat_switch_cpus.append(repeat_switch_cpus[j])
            else:
                testsys[1].repeat_switch_cpus.append(repeat_switch_cpus[j])

        if cpu_class:
            repeat_switch_cpu_list = [(switch_cpus[i], repeat_switch_cpus[i])
                                      for i in xrange(np * 2)]
        else:
            repeat_switch_cpu_list_1 = [
                (testsys[0].cpu[i], repeat_switch_cpus[i]) for i in xrange(np)
            ]
            repeat_switch_cpu_list_2 = [(testsys[1].cpu[i + ncpuswitch],
                                         repeat_switch_cpus[i + ncpuswitch])
                                        for i in xrange(np)]
            repeat_switch_cpu_list = repeat_switch_cpu_list_1 + repeat_switch_cpu_list_2
    if options.standard_switch:
        switch_cpus = [
            TimingSimpleCPU(switched_out=True, cpu_id=(i))
            for i in xrange(np * 2)
        ]
        switch_cpus_1 = [
            DerivO3CPU(switched_out=True, cpu_id=(i)) for i in xrange(np * 2)
        ]

        for i in xrange(np * 2):
            if i < np:
                switch_cpus[i].system = testsys[0]
                switch_cpus_1[i].system = testsys[0]
                switch_cpus[i].workload = testsys[0].cpu[i].workload
                switch_cpus_1[i].workload = testsys[0].cpu[i].workload
                switch_cpus[i].clk_domain = testsys[0].cpu[i].clk_domain
                switch_cpus_1[i].clk_domain = testsys[0].cpu[i].clk_domain
            else:
                switch_cpus[i].system = testsys[1]
                switch_cpus_1[i].system = testsys[1]
                switch_cpus[i].workload = testsys[1].cpu[i].workload
                switch_cpus_1[i].workload = testsys[1].cpu[i].workload
                switch_cpus[i].clk_domain = testsys[1].cpu[i].clk_domain
                switch_cpus_1[i].clk_domain = testsys[1].cpu[i].clk_domain

            # if restoring, make atomic cpu simulate only a few instructions
            if options.checkpoint_restore != None:
                if i < np:
                    testsys[0].cpu[i].max_insts_any_thread = 1
                else:
                    testsys[1].cpu[i].max_insts_any_thread = 1
                    # Fast forward to specified location if we are not restoring
            elif options.fast_forward:
                if i < np:
                    testsys[0].cpu[i].max_insts_any_thread = int(
                        options.fast_forward)
                else:
                    testsys[1].cpu[i].max_insts_any_thread = int(
                        options.fast_forward)
            # Fast forward to a simpoint (warning: time consuming)
            elif options.simpoint:
                if i < np:
                    if testsys[0].cpu[i].workload[0].simpoint == 0:
                        fatal('simpoint not found')
                    testsys[0].cpu[i].max_insts_any_thread = \
                        testsys[0].cpu[i].workload[0].simpoint
                else:
                    if testsys[1].cpu[i].workload[0].simpoint == 0:
                        fatal('simpoint not found')
                    testsys[1].cpu[i].max_insts_any_thread = \
                        testsys[1].cpu[i].workload[0].simpoint
            # No distance specified, just switch
            else:
                if i < np:
                    testsys[0].cpu[i].max_insts_any_thread = 1
                else:
                    testsys[1].cpu[i].max_insts_any_thread = 1

            # warmup period
            if options.warmup_insts:
                switch_cpus[i].max_insts_any_thread = options.warmup_insts

            # simulation period
            if options.maxinsts:
                switch_cpus_1[i].max_insts_any_thread = options.maxinsts

            # attach the checker cpu if selected
            if options.checker:
                switch_cpus[i].addCheckerCpu()
                switch_cpus_1[i].addCheckerCpu()

        testsys[0].switch_cpus = switch_cpus
        testsys[1].switch_cpus = switch_cpus
        testsys[0].switch_cpus_1 = switch_cpus_1
        testsys[1].switch_cpus_1 = switch_cpus_1
        switch_cpu_list_1 = [(testsys[0].cpu[i], switch_cpus[i])
                             for i in xrange(np)]
        switch_cpu_list_2 = [(testsys[1].cpu[i], switch_cpus[i])
                             for i in xrange(np)]
        switch_cpu_list = switch_cpu_list_1 + switch_cpu_list_2
        switch_cpu_list1 = [(switch_cpus[i], switch_cpus_1[i])
                            for i in switch_cpu_list1]
        for i in xrange(np * 2):
            if i < np:
                switch_cpu_list1_1 = [switch_cpu_list1[i]]
            else:
                switch_cpu_list1_2 = [switch_cpu_list1[i]]
    # set the checkpoint in the cpu before m5.instantiate is called
    if options.take_checkpoints != None and \
           (options.simpoint or options.at_instruction):
        offset = int(options.take_checkpoints)
        # Set an instruction break point
        if options.simpoint:
            for i in xrange(np * 2):
                if i < np:
                    if testsys.cpu[i].workload[0].simpoint == 0:
                        fatal('no simpoint for testsys.cpu[%d].workload[0]', i)
                    checkpoint_inst = int(
                        testsys[0].cpu[i].workload[0].simpoint) + offset
                    testsys[0].cpu[i].max_insts_any_thread = checkpoint_inst
                    # used for output below
                    options.take_checkpoints = checkpoint_inst
                else:
                    if testsys[1].cpu[i].workload[0].simpoint == 0:
                        fatal('no simpoint for testsys.cpu[%d].workload[0]', i)
                    checkpoint_inst = int(
                        testsys[1].cpu[i].workload[0].simpoint) + offset
                    testsys[1].cpu[i].max_insts_any_thread = checkpoint_inst
                    # used for output below
                    options.take_checkpoints = checkpoint_inst
        else:
            options.take_checkpoints = offset
            # Set all test cpus with the right number of instructions
            # for the upcoming simulation
            for i in xrange(np * 2):
                if i < np:
                    testsys[0].cpu[i].max_insts_any_thread = offset
                else:
                    testsys[1].cpu[i].max_insts_any_thread = offset

    checkpoint_dir = None
    checkpoint_dir1 = None
    if options.checkpoint_restore:
        cpt_starttick, checkpoint_dir = findCptDir(options, cptdir, testsys[0])
        cpt_starttick1, checkpoint_dir1 = findCptDir(options, cptdir,
                                                     testsys[1])
    m5.instantiate(checkpoint_dir)
    m5.instantiate(checkpoint_dir1)

    # Handle the max tick settings now that tick frequency was resolved
    # during system instantiation
    # NOTE: the maxtick variable here is in absolute ticks, so it must
    # include any simulated ticks before a checkpoint
    explicit_maxticks = 0
    maxtick_from_abs = m5.MaxTick
    maxtick_from_rel = m5.MaxTick
    maxtick_from_maxtime = m5.MaxTick
    explicit_maxticks1 = 0
    maxtick_from_abs1 = m5.MaxTick
    maxtick_from_rel1 = m5.MaxTick
    maxtick_from_maxtime1 = m5.MaxTick
    if options.abs_max_tick:
        maxtick_from_abs = options.abs_max_tick
        explicit_maxticks += 1
        maxtick_from_abs1 = options.abs_max_tick
        explicit_maxticks1 += 1
    if options.rel_max_tick:
        maxtick_from_rel = options.rel_max_tick
        maxtick_from_rel1 = options.rel_max_tick
        if options.checkpoint_restore:
            # NOTE: this may need to be updated if checkpoints ever store
            # the ticks per simulated second
            maxtick_from_rel += cpt_starttick
            maxtick_from_rel1 += cpt_starttick1
            if options.at_instruction or options.simpoint:
                warn("Relative max tick specified with --at-instruction or" \
                     " --simpoint\n      These options don't specify the " \
                     "checkpoint start tick, so assuming\n      you mean " \
                     "absolute max tick")
        explicit_maxticks += 1
        explicit_maxticks1 += 1
    if options.maxtime:
        maxtick_from_maxtime = m5.ticks.fromSeconds(options.maxtime)
        explicit_maxticks += 1
        maxtick_from_maxtime1 = m5.ticks.fromSeconds(options.maxtime)
        explicit_maxticks1 += 1
    if explicit_maxticks > 1:
        warn("Specified multiple of --abs-max-tick, --rel-max-tick, --maxtime."\
             " Using least")
    if explicit_maxticks1 > 1:
        warn("Specified multiple of --abs-max-tick, --rel-max-tick, --maxtime."\
             " Using least")
    maxtick = min([maxtick_from_abs, maxtick_from_rel, maxtick_from_maxtime])
    maxtick1 = min(
        [maxtick_from_abs1, maxtick_from_rel1, maxtick_from_maxtime1])

    if options.checkpoint_restore != None and maxtick < cpt_starttick:
        fatal("Bad maxtick (%d) specified: " \
              "Checkpoint starts starts from tick: %d", maxtick, cpt_starttick)
    if options.checkpoint_restore != None and maxtick1 < cpt_starttick1:
        fatal("Bad maxtick (%d) specified: " \
              "Checkpoint starts starts from tick: %d", maxtick1, cpt_starttick1)

    if options.standard_switch or cpu_class:
        if options.standard_switch:
            print "Switch at instruction count:%s" % \
                    str(testsys[0].cpu[0].max_insts_any_thread)
            print "Switch at instruction count:%s" % \
                    str(testsys[1].cpu[0].max_insts_any_thread)
            exit_event = m5.simulate()
        elif cpu_class and options.fast_forward:
            print "Switch at instruction count:%s" % \
                    str(testsys[0].cpu[0].max_insts_any_thread)
            print "Switch at instruction count:%s" % \
                    str(testsys[1].cpu[0].max_insts_any_thread)
            exit_event = m5.simulate()
        else:
            print "Switch at curTick count:%s" % str(10000)
            exit_event = m5.simulate(10000)
        print "Switched CPUS @ tick %s" % (m5.curTick())

        m5.switchCpus(testsys[0], switch_cpu_list_1)
        m5.switchCpus(testsys[1], switch_cpu_list_2)

        if options.standard_switch:
            print "Switch at instruction count:%d" % \
                    (testsys[0].switch_cpus[0].max_insts_any_thread)
            print "Switch at instruction count:%d" % \
                    (testsys[1].switch_cpus[0].max_insts_any_thread)

            #warmup instruction count may have already been set
            if options.warmup_insts:
                exit_event = m5.simulate()
            else:
                exit_event = m5.simulate(options.standard_switch)
            print "Switching CPUS @ tick %s" % (m5.curTick())
            print "Simulation ends instruction count:%d" % \
                    (testsys[0].switch_cpus_1[0].max_insts_any_thread)
            print "Simulation ends instruction count:%d" % \
                    (testsys[1].switch_cpus_1[0].max_insts_any_thread)

            m5.switchCpus(testsys[0], switch_cpu_list1_1)
            m5.switchCpus(testsys[1], switch_cpu_list1_2)

    # If we're taking and restoring checkpoints, use checkpoint_dir
    # option only for finding the checkpoints to restore from.  This
    # lets us test checkpointing by restoring from one set of
    # checkpoints, generating a second set, and then comparing them.
    if options.take_checkpoints and options.checkpoint_restore:
        if m5.options.outdir:
            cptdir = m5.options.outdir
            cptdir1 = m5.options.outdir
        else:
            cptdir = getcwd()
            cptdir1 = getcwd()

    if options.take_checkpoints != None:
        # Checkpoints being taken via the command line at <when> and at
        # subsequent periods of <period>.  Checkpoint instructions
        # received from the benchmark running are ignored and skipped in
        # favor of command line checkpoint instructions.
        exit_event = scriptCheckpoints(options, maxtick, cptdir)
        exit_event1 = scriptCheckpoints(options, maxtick1, cptdir1)
    else:
        if options.fast_forward:
            m5.stats.reset()
        print "**** REAL SIMULATION ****"

        # If checkpoints are being taken, then the checkpoint instruction
        # will occur in the benchmark code it self.
        if options.repeat_switch and maxtick > options.repeat_switch:
            exit_event = repeatSwitch(testsys[0], repeat_switch_cpu_list_1,
                                      maxtick, options.repeat_switch)
        else:
            exit_event = benchCheckpoints(options, maxtick, cptdir)
        if options.repeat_switch and maxtick1 > options.repeat_switch:
            exit_event1 = repeatSwitch(testsys[1], repeat_switch_cpu_list_2,
                                       maxtick1, options.repeat_switch)
        else:
            exit_event = benchCheckpoints(options, maxtick, cptdir)
            exit_event1 = benchCheckpoints(options, maxtick1, cptdir1)

    print 'Exiting @ tick %i because %s' % (m5.curTick(),
                                            exit_event.getCause())
    if options.checkpoint_at_end:
        m5.checkpoint(joinpath(cptdir, "cpt.%d"))
        m5.checkpoint(joinpath(cptdir1, "cpt.%d"))

    if not m5.options.interactive:
        sys.exit(exit_event.getCode())
        sys.exit(exit_event1.getCode())
Esempio n. 26
0
def main():
    parser = argparse.ArgumentParser(
        description="Generic ARM big.LITTLE configuration")

    parser.add_argument("--restore-from",
                        type=str,
                        default=None,
                        help="Restore from checkpoint")
    parser.add_argument("--dtb",
                        type=str,
                        default=default_dtb,
                        help="DTB file to load")
    parser.add_argument("--kernel",
                        type=str,
                        default=default_kernel,
                        help="Linux kernel")
    parser.add_argument("--disk",
                        action="append",
                        type=str,
                        default=[],
                        help="Disks to instantiate")
    parser.add_argument("--bootscript",
                        type=str,
                        default=default_rcs,
                        help="Linux bootscript")
    parser.add_argument("--atomic",
                        action="store_true",
                        default=False,
                        help="Use atomic CPUs")
    parser.add_argument("--kernel-init",
                        type=str,
                        default="/sbin/init",
                        help="Override init")
    parser.add_argument("--big-cpus",
                        type=int,
                        default=1,
                        help="Number of big CPUs to instantiate")
    parser.add_argument("--little-cpus",
                        type=int,
                        default=1,
                        help="Number of little CPUs to instantiate")
    parser.add_argument("--caches",
                        action="store_true",
                        default=False,
                        help="Instantiate caches")
    parser.add_argument("--last-cache-level",
                        type=int,
                        default=2,
                        help="Last level of caches (e.g. 3 for L3)")
    parser.add_argument("--big-cpu-clock",
                        type=str,
                        default="2GHz",
                        help="Big CPU clock frequency")
    parser.add_argument("--little-cpu-clock",
                        type=str,
                        default="1GHz",
                        help="Little CPU clock frequency")

    m5.ticks.fixGlobalFrequency()

    options = parser.parse_args()

    kernel_cmd = [
        "earlyprintk=pl011,0x1c090000",
        "console=ttyAMA0",
        "lpj=19988480",
        "norandmaps",
        "loglevel=8",
        "mem=%s" % default_mem_size,
        "root=/dev/vda1",
        "rw",
        "init=%s" % options.kernel_init,
        "vmalloc=768MB",
    ]

    root = Root(full_system=True)

    disks = default_disk if len(options.disk) == 0 else options.disk
    system = createSystem(options.kernel, options.bootscript, disks=disks)

    root.system = system
    system.boot_osflags = " ".join(kernel_cmd)

    AtomicCluster = devices.AtomicCluster

    if options.big_cpus + options.little_cpus == 0:
        m5.util.panic("Empty CPU clusters")

    # big cluster
    if options.big_cpus > 0:
        if options.atomic:
            system.bigCluster = AtomicCluster(system, options.big_cpus,
                                              options.big_cpu_clock)
        else:
            system.bigCluster = BigCluster(system, options.big_cpus,
                                           options.big_cpu_clock)
        mem_mode = system.bigCluster.memoryMode()
    # little cluster
    if options.little_cpus > 0:
        if options.atomic:
            system.littleCluster = AtomicCluster(system, options.little_cpus,
                                                 options.little_cpu_clock)

        else:
            system.littleCluster = LittleCluster(system, options.little_cpus,
                                                 options.little_cpu_clock)
        mem_mode = system.littleCluster.memoryMode()

    if options.big_cpus > 0 and options.little_cpus > 0:
        if system.bigCluster.memoryMode() != system.littleCluster.memoryMode():
            m5.util.panic("Memory mode missmatch among CPU clusters")
    system.mem_mode = mem_mode

    # create caches
    system.addCaches(options.caches, options.last_cache_level)
    if not options.caches:
        if options.big_cpus > 0 and system.bigCluster.requireCaches():
            m5.util.panic("Big CPU model requires caches")
        if options.little_cpus > 0 and system.littleCluster.requireCaches():
            m5.util.panic("Little CPU model requires caches")

    # Linux device tree
    system.dtb_filename = SysPaths.binary(options.dtb)

    # Get and load from the chkpt or simpoint checkpoint
    if options.restore_from is not None:
        m5.instantiate(options.restore_from)
    else:
        m5.instantiate()

    # start simulation (and drop checkpoints when requested)
    while True:
        event = m5.simulate()
        exit_msg = event.getCause()
        if exit_msg == "checkpoint":
            print "Dropping checkpoint at tick %d" % m5.curTick()
            cpt_dir = os.path.join(m5.options.outdir, "cpt.%d" % m5.curTick())
            m5.checkpoint(os.path.join(cpt_dir))
            print "Checkpoint done."
        else:
            print exit_msg, " @ ", m5.curTick()
            break

    sys.exit(event.getCode())
Esempio n. 27
0
def main():
    parser = argparse.ArgumentParser(
        description="Generic ARM big.LITTLE configuration")

    parser.add_argument("--restore-from", type=str, default=None,
                        help="Restore from checkpoint")
    parser.add_argument("--dtb", type=str, default=default_dtb,
                        help="DTB file to load")
    parser.add_argument("--kernel", type=str, default=default_kernel,
                        help="Linux kernel")
    parser.add_argument("--disk", action="append", type=str, default=[],
                        help="Disks to instantiate")
    parser.add_argument("--bootscript", type=str, default=default_rcs,
                        help="Linux bootscript")
    parser.add_argument("--atomic", action="store_true", default=False,
                        help="Use atomic CPUs")
    parser.add_argument("--kernel-init", type=str, default="/sbin/init",
                        help="Override init")
    parser.add_argument("--big-cpus", type=int, default=1,
                        help="Number of big CPUs to instantiate")
    parser.add_argument("--little-cpus", type=int, default=1,
                        help="Number of little CPUs to instantiate")
    parser.add_argument("--caches", action="store_true", default=False,
                        help="Instantiate caches")
    parser.add_argument("--last-cache-level", type=int, default=2,
                        help="Last level of caches (e.g. 3 for L3)")
    parser.add_argument("--big-cpu-clock", type=str, default="2GHz",
                        help="Big CPU clock frequency")
    parser.add_argument("--little-cpu-clock", type=str, default="1GHz",
                        help="Little CPU clock frequency")

    m5.ticks.fixGlobalFrequency()

    options = parser.parse_args()

    kernel_cmd = [
        "earlyprintk=pl011,0x1c090000",
        "console=ttyAMA0",
        "lpj=19988480",
        "norandmaps",
        "loglevel=8",
        "mem=%s" % default_mem_size,
        "root=/dev/vda1",
        "rw",
        "init=%s" % options.kernel_init,
        "vmalloc=768MB",
    ]

    root = Root(full_system=True)

    disks = [default_disk] if len(options.disk) == 0 else options.disk
    system = createSystem(options.caches,
                          options.kernel,
                          options.bootscript,
                          disks=disks)

    root.system = system
    system.boot_osflags = " ".join(kernel_cmd)

    AtomicCluster = devices.AtomicCluster

    if options.big_cpus + options.little_cpus == 0:
        m5.util.panic("Empty CPU clusters")

    # big cluster
    if options.big_cpus > 0:
        if options.atomic:
            system.bigCluster = AtomicCluster(system, options.big_cpus,
                                              options.big_cpu_clock)
        else:
            system.bigCluster = BigCluster(system, options.big_cpus,
                                           options.big_cpu_clock)
        mem_mode = system.bigCluster.memoryMode()
    # little cluster
    if options.little_cpus > 0:
        if options.atomic:
            system.littleCluster = AtomicCluster(system, options.little_cpus,
                                                 options.little_cpu_clock)

        else:
            system.littleCluster = LittleCluster(system, options.little_cpus,
                                                 options.little_cpu_clock)
        mem_mode = system.littleCluster.memoryMode()

    if options.big_cpus > 0 and options.little_cpus > 0:
        if system.bigCluster.memoryMode() != system.littleCluster.memoryMode():
            m5.util.panic("Memory mode missmatch among CPU clusters")
    system.mem_mode = mem_mode

    # create caches
    system.addCaches(options.caches, options.last_cache_level)
    if not options.caches:
        if options.big_cpus > 0 and system.bigCluster.requireCaches():
            m5.util.panic("Big CPU model requires caches")
        if options.little_cpus > 0 and system.littleCluster.requireCaches():
            m5.util.panic("Little CPU model requires caches")

    # Linux device tree
    system.dtb_filename = SysPaths.binary(options.dtb)

    # Get and load from the chkpt or simpoint checkpoint
    if options.restore_from is not None:
        m5.instantiate(options.restore_from)
    else:
        m5.instantiate()

    # start simulation (and drop checkpoints when requested)
    while True:
        event = m5.simulate()
        exit_msg = event.getCause()
        if exit_msg == "checkpoint":
            print "Dropping checkpoint at tick %d" % m5.curTick()
            cpt_dir = os.path.join(m5.options.outdir, "cpt.%d" % m5.curTick())
            m5.checkpoint(os.path.join(cpt_dir))
            print "Checkpoint done."
        else:
            print exit_msg, " @ ", m5.curTick()
            break

    sys.exit(event.getCode())
Esempio n. 28
0
def run(options, root, testsys, cpu_class):
    if options.checkpoint_dir:
        cptdir = options.checkpoint_dir
    elif m5.options.outdir:
        cptdir = m5.options.outdir
    else:
        cptdir = getcwd()

    if options.fast_forward and options.checkpoint_restore != None:
        fatal("Can't specify both --fast-forward and --checkpoint-restore")

    if options.standard_switch and not options.caches:
        fatal("Must specify --caches when using --standard-switch")

    if options.standard_switch and options.repeat_switch:
        fatal("Can't specify both --standard-switch and --repeat-switch")

    if options.repeat_switch and options.take_checkpoints:
        fatal("Can't specify both --repeat-switch and --take-checkpoints")

    np = options.num_cpus
    switch_cpus = None

    if options.prog_interval:
        for i in xrange(np):
            testsys.cpu[i].progress_interval = options.prog_interval

    if options.maxinsts:
        for i in xrange(np):
            testsys.cpu[i].max_insts_any_thread = options.maxinsts

    if cpu_class:
        switch_cpus = [cpu_class(switched_out=True, cpu_id=(i))
                       for i in xrange(np)]

        for i in xrange(np):
            if options.fast_forward:
                testsys.cpu[i].max_insts_any_thread = int(options.fast_forward)
            switch_cpus[i].system =  testsys
            switch_cpus[i].workload = testsys.cpu[i].workload
            switch_cpus[i].clk_domain = testsys.cpu[i].clk_domain
            switch_cpus[i].progress_interval = testsys.cpu[i].progress_interval
            # simulation period
            if options.maxinsts:
                switch_cpus[i].max_insts_any_thread = options.maxinsts
            # Add checker cpu if selected
            if options.checker:
                switch_cpus[i].addCheckerCpu()

        testsys.switch_cpus = switch_cpus
        switch_cpu_list = [(testsys.cpu[i], switch_cpus[i]) for i in xrange(np)]

    if options.repeat_switch:
        switch_class = getCPUClass(options.cpu_type)[0]
        if switch_class.require_caches() and \
                not options.caches:
            print "%s: Must be used with caches" % str(switch_class)
            sys.exit(1)
        if not switch_class.support_take_over():
            print "%s: CPU switching not supported" % str(switch_class)
            sys.exit(1)

        repeat_switch_cpus = [switch_class(switched_out=True, \
                                               cpu_id=(i)) for i in xrange(np)]

        for i in xrange(np):
            repeat_switch_cpus[i].system = testsys
            repeat_switch_cpus[i].workload = testsys.cpu[i].workload
            repeat_switch_cpus[i].clk_domain = testsys.cpu[i].clk_domain

            if options.maxinsts:
                repeat_switch_cpus[i].max_insts_any_thread = options.maxinsts

            if options.checker:
                repeat_switch_cpus[i].addCheckerCpu()

        testsys.repeat_switch_cpus = repeat_switch_cpus

        if cpu_class:
            repeat_switch_cpu_list = [(switch_cpus[i], repeat_switch_cpus[i])
                                      for i in xrange(np)]
        else:
            repeat_switch_cpu_list = [(testsys.cpu[i], repeat_switch_cpus[i])
                                      for i in xrange(np)]

    if options.standard_switch:
        switch_cpus = [TimingSimpleCPU(switched_out=True, cpu_id=(i))
                       for i in xrange(np)]
        switch_cpus_1 = [DerivO3CPU(switched_out=True, cpu_id=(i))
                        for i in xrange(np)]

        for i in xrange(np):
            switch_cpus[i].system =  testsys
            switch_cpus_1[i].system =  testsys
            switch_cpus[i].workload = testsys.cpu[i].workload
            switch_cpus_1[i].workload = testsys.cpu[i].workload
            switch_cpus[i].clk_domain = testsys.cpu[i].clk_domain
            switch_cpus_1[i].clk_domain = testsys.cpu[i].clk_domain

            # if restoring, make atomic cpu simulate only a few instructions
            if options.checkpoint_restore != None:
                testsys.cpu[i].max_insts_any_thread = 1
            # Fast forward to specified location if we are not restoring
            elif options.fast_forward:
                testsys.cpu[i].max_insts_any_thread = int(options.fast_forward)
            # Fast forward to a simpoint (warning: time consuming)
            elif options.simpoint:
                if testsys.cpu[i].workload[0].simpoint == 0:
                    fatal('simpoint not found')
                testsys.cpu[i].max_insts_any_thread = \
                    testsys.cpu[i].workload[0].simpoint
            # No distance specified, just switch
            else:
                testsys.cpu[i].max_insts_any_thread = 1

            # warmup period
            if options.warmup_insts:
                switch_cpus[i].max_insts_any_thread =  options.warmup_insts

            # simulation period
            if options.maxinsts:
                switch_cpus_1[i].max_insts_any_thread = options.maxinsts

            # attach the checker cpu if selected
            if options.checker:
                switch_cpus[i].addCheckerCpu()
                switch_cpus_1[i].addCheckerCpu()

        testsys.switch_cpus = switch_cpus
        testsys.switch_cpus_1 = switch_cpus_1
        switch_cpu_list = [(testsys.cpu[i], switch_cpus[i]) for i in xrange(np)]
        switch_cpu_list1 = [(switch_cpus[i], switch_cpus_1[i]) for i in xrange(np)]

    # set the checkpoint in the cpu before m5.instantiate is called
    if options.take_checkpoints != None and \
           (options.simpoint or options.at_instruction):
        offset = int(options.take_checkpoints)
        # Set an instruction break point
        if options.simpoint:
            for i in xrange(np):
                if testsys.cpu[i].workload[0].simpoint == 0:
                    fatal('no simpoint for testsys.cpu[%d].workload[0]', i)
                checkpoint_inst = int(testsys.cpu[i].workload[0].simpoint) + offset
                testsys.cpu[i].max_insts_any_thread = checkpoint_inst
                # used for output below
                options.take_checkpoints = checkpoint_inst
        else:
            options.take_checkpoints = offset
            # Set all test cpus with the right number of instructions
            # for the upcoming simulation
            for i in xrange(np):
                testsys.cpu[i].max_insts_any_thread = offset

    if options.take_simpoint_checkpoints != None:
        simpoints, interval_length = parseSimpointAnalysisFile(options, testsys)

    checkpoint_dir = None
    if options.checkpoint_restore:
        cpt_starttick, checkpoint_dir = findCptDir(options, cptdir, testsys)
    m5.instantiate(checkpoint_dir)

    # Initialization is complete.  If we're not in control of simulation
    # (that is, if we're a slave simulator acting as a component in another
    #  'master' simulator) then we're done here.  The other simulator will
    # call simulate() directly. --initialize-only is used to indicate this.
    if options.initialize_only:
        return

    # Handle the max tick settings now that tick frequency was resolved
    # during system instantiation
    # NOTE: the maxtick variable here is in absolute ticks, so it must
    # include any simulated ticks before a checkpoint
    explicit_maxticks = 0
    maxtick_from_abs = m5.MaxTick
    maxtick_from_rel = m5.MaxTick
    maxtick_from_maxtime = m5.MaxTick
    if options.abs_max_tick:
        maxtick_from_abs = options.abs_max_tick
        explicit_maxticks += 1
    if options.rel_max_tick:
        maxtick_from_rel = options.rel_max_tick
        if options.checkpoint_restore:
            # NOTE: this may need to be updated if checkpoints ever store
            # the ticks per simulated second
            maxtick_from_rel += cpt_starttick
            if options.at_instruction or options.simpoint:
                warn("Relative max tick specified with --at-instruction or" \
                     " --simpoint\n      These options don't specify the " \
                     "checkpoint start tick, so assuming\n      you mean " \
                     "absolute max tick")
        explicit_maxticks += 1
    if options.maxtime:
        maxtick_from_maxtime = m5.ticks.fromSeconds(options.maxtime)
        explicit_maxticks += 1
    if explicit_maxticks > 1:
        warn("Specified multiple of --abs-max-tick, --rel-max-tick, --maxtime."\
             " Using least")
    maxtick = min([maxtick_from_abs, maxtick_from_rel, maxtick_from_maxtime])

    if options.checkpoint_restore != None and maxtick < cpt_starttick:
        fatal("Bad maxtick (%d) specified: " \
              "Checkpoint starts starts from tick: %d", maxtick, cpt_starttick)

    if options.standard_switch or cpu_class:
        if options.standard_switch:
            print "Switch at instruction count:%s" % \
                    str(testsys.cpu[0].max_insts_any_thread)
            exit_event = m5.simulate()
        elif cpu_class and options.fast_forward:
            print "Switch at instruction count:%s" % \
                    str(testsys.cpu[0].max_insts_any_thread)
            exit_event = m5.simulate()
        else:
            print "Switch at curTick count:%s" % str(10000)
            exit_event = m5.simulate(10000)
        print "Switched CPUS @ tick %s" % (m5.curTick())

        m5.switchCpus(testsys, switch_cpu_list)

        if options.standard_switch:
            print "Switch at instruction count:%d" % \
                    (testsys.switch_cpus[0].max_insts_any_thread)

            #warmup instruction count may have already been set
            if options.warmup_insts:
                exit_event = m5.simulate()
            else:
                exit_event = m5.simulate(options.standard_switch)
            print "Switching CPUS @ tick %s" % (m5.curTick())
            print "Simulation ends instruction count:%d" % \
                    (testsys.switch_cpus_1[0].max_insts_any_thread)
            m5.switchCpus(testsys, switch_cpu_list1)

    # If we're taking and restoring checkpoints, use checkpoint_dir
    # option only for finding the checkpoints to restore from.  This
    # lets us test checkpointing by restoring from one set of
    # checkpoints, generating a second set, and then comparing them.
    if (options.take_checkpoints or options.take_simpoint_checkpoints) \
        and options.checkpoint_restore:

        if m5.options.outdir:
            cptdir = m5.options.outdir
        else:
            cptdir = getcwd()

    if options.take_checkpoints != None :
        # Checkpoints being taken via the command line at <when> and at
        # subsequent periods of <period>.  Checkpoint instructions
        # received from the benchmark running are ignored and skipped in
        # favor of command line checkpoint instructions.
        exit_event = scriptCheckpoints(options, maxtick, cptdir)

    # Take SimPoint checkpoints
    elif options.take_simpoint_checkpoints != None:
        takeSimpointCheckpoints(simpoints, interval_length, cptdir)

    # Restore from SimPoint checkpoints
    elif options.restore_simpoint_checkpoint != None:
        restoreSimpointCheckpoint()

    else:
        if options.fast_forward:
            m5.stats.reset()
        print "**** REAL SIMULATION ****"

        # If checkpoints are being taken, then the checkpoint instruction
        # will occur in the benchmark code it self.
        if options.repeat_switch and maxtick > options.repeat_switch:
            exit_event = repeatSwitch(testsys, repeat_switch_cpu_list,
                                      maxtick, options.repeat_switch)
        else:
            exit_event = benchCheckpoints(options, maxtick, cptdir)

    print 'Exiting @ tick %i because %s' % (m5.curTick(), exit_event.getCause())
    if options.checkpoint_at_end:
        m5.checkpoint(joinpath(cptdir, "cpt.%d"))

    if not m5.options.interactive:
        sys.exit(exit_event.getCode())
            print("User interrupt. Exiting")
            break

        print("Exited because", exit_event.getCause())

        if exit_event.getCause() == "work started count reach":
            start_tick = m5.curTick()
            start_insts = system.totalInsts()
            foundROI = True
        elif exit_event.getCause() == "work items exit count reached":
            end_tick = m5.curTick()
            end_insts = system.totalInsts()

        print("Continuing")
        exit_event = m5.simulate()

    if options.checkpoint_at_end:
        m5.checkpoint(joinpath(cptdir, "cpt.%d"))

    print("")
    print("Performance statistics")

    print("Ran a total of", m5.curTick() / 1e12, "simulated seconds")
    print("Total wallclock time: %.2fs, %.2f min" % \
                (time.time()-globalStart, (time.time()-globalStart)/60))

    if foundROI:
        print("Simulated time in ROI: %.2fs" %
              ((end_tick - start_tick) / 1e12))
print("Instructions executed in ROI: %d" % ((end_insts - start_insts)))