def create_system(linux_kernel_path, disk_image_path, detailed_cpu_model):
# create the system we are going to simulate
system = MySystem(
kernel=linux_kernel_path,
disk=disk_image_path,
num_cpus=1, # run the benchmark in a single thread
no_kvm=False,
TimingCPUModel=detailed_cpu_model)
# For workitems to work correctly
# This will cause the simulator to exit simulation when the first work
# item is reached and when the first work item is finished.
system.work_begin_exit_count = 1
system.work_end_exit_count = 1
# set up the root SimObject and start the simulation
root = Root(full_system=True, system=system)
if system.getHostParallel():
# 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
return root, system
def runFullSystem():
(opts, args) = SimpleOpts.parse_args()
kernel, disk, cpu, benchmark, num_cpus = args
# Don't init GPU stuff in Ruby if no GPU is specified
if opts.dgpu or opts.apu:
opts.cpu_only_mode = False
else:
opts.cpu_only_mode = True
# create the system we are going to simulate
system = MySystem(kernel, disk, int(num_cpus), opts, no_kvm=False)
# Exit from guest on workbegin/workend
system.exit_on_work_items = True
# Set up the root SimObject and start the simulation
root = Root(full_system=True, system=system)
if system.getHostParallel():
# 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
if opts.checkpoint_restore:
m5.instantiate(opts.checkpoint_dir)
else:
m5.instantiate()
globalStart = time.time()
print("Running the simulation")
print("Using cpu: {}".format(cpu))
exit_event = m5.simulate(opts.abs_max_tick)
# While there is still something to do in the guest keep executing.
while exit_event.getCause() != "m5_exit instruction encountered":
# 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
if exit_event.getCause() == "simulate() limit reached":
break
elif "checkpoint" in exit_event.getCause():
m5.checkpoint(opts.checkpoint_dir)
break
elif "switchcpu" in exit_event.getCause():
system.switchCpus(system.cpu, system.warmupCpu)
else:
break
print('Exiting @ tick %i because %s' %
(m5.curTick(), exit_event.getCause()))
m5.fatal("cpu not supported")
# create the system we are going to simulate
system = MySystem(kernel, disk, int(num_cpus), opts, no_kvm=False)
# Exit from guest on workbegin/workend
system.exit_on_work_items = True
# Create and pass a script to the simulated system to run the reuired
# benchmark
system.readfile = writeBenchScript(m5.options.outdir, benchmark, size)
# set up the root SimObject and start the simulation
root = Root(full_system = True, system = system)
if system.getHostParallel():
# 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
#needed for long running jobs
m5.disableAllListeners()
# instantiate all of the objects we've created above
m5.instantiate()
globalStart = time.time()
print("Running the simulation")
print("Using cpu: {}".format(cpu))
