def main():
"""Main program to drive building of benchmarks."""
# Establish the root directory of the repository, since we know this file is
# in that directory.
gp['rootdir'] = os.path.abspath(os.path.dirname(__file__))
# Parse arguments using standard technology
parser = build_parser()
args = parser.parse_args()
# Establish logging, using "build" as the log file prefix.
gp['verbose'] = args.verbose
setup_logging(args.logdir, 'build')
log_args(args)
# Establish build directory
create_builddir(args.builddir, args.clean)
# Check args are OK (have to have logging and build directory set up first)
validate_args(args)
# Find the benchmarks
benchmarks = find_benchmarks()
log_benchmarks(benchmarks)
# Establish other global parameters
set_parameters(args)
log_parameters()
log.debug('General log')
log.debug('===========')
# Set up additional environment variables.
set_environ()
# Track success
successful = compile_support()
if successful:
log.debug('Compilation of support files successful')
for bench in benchmarks:
res = compile_benchmark(bench)
successful &= res
if res:
log.debug('Compilation of benchmark "{bench}" successful'.format(
bench=bench))
res = link_benchmark(bench)
successful &= res
if res:
log.debug('Linking of benchmark "{bench}" successful'.format(
bench=bench))
log.info(bench)
if successful:
log.info('All benchmarks built successfully')
def decode_results(stdout_str, stderr_str):
"""Extract the results from the output string of the run. Return the
elapsed time in milliseconds or zero if the run failed."""
time_re = re.search('Bench time:(\\d+)', stdout_str, re.S)
time = int(time_re.group(1))
if not time:
log.debug('Warning: Failed to find timing')
return 0.0
return time / cpu_mhz / 1000.0
def log_parameters():
"""Record all the global parameters in the log"""
log.debug('Global parameters')
log.debug('=================')
for key, val in gp.items():
log.debug(f'{key:<21}: {val}')
log.debug('')
def compile_file(f_root, srcdir, bindir):
"""Compile a single C file, with the given file root, "f_root", from the
source directory, "srcdir", in to the bin directory, "bindir" using the
general preprocessor and C compilation flags.
Return True if the compilation success, False if it fails. Log
everything in the event of failure"""
abs_src = os.path.join(f'{srcdir}', f'{f_root}.c')
abs_bin = os.path.join(f'{bindir}', f'{f_root}.o')
# Construct the argument list
arglist = [f'{gp["cc"]}']
arglist.extend(gp['cflags'])
arglist.extend(gp['cc_output_pattern'].format(f'{f_root}.o').split(sep=' '))
arglist.extend(gp['cc_input_pattern'].format(abs_src).split(sep=' '))
# Run the compilation, but only if the source file is newer than the
# binary.
succeeded = True
res = None
if not os.path.isfile(abs_bin) or (
os.path.getmtime(abs_src) > os.path.getmtime(abs_bin)
):
try:
res = subprocess.run(
arglist,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
cwd=bindir,
timeout=300,
)
if res.returncode != 0:
log.warning(
f'Warning: Compilation of {f_root}.c from source directory '
+ f'{srcdir} to binary directory {bindir} failed'
)
succeeded = False
except subprocess.TimeoutExpired:
log.warning(
f'Warning: Compilation of {f_root}.c from source directory '
+ f'{srcdir} to binary directory {bindir} timed out'
)
succeeded = False
if not succeeded:
log.debug('Args to subprocess:')
log.debug(f'{arglist}')
if res:
log.debug(res.stdout.decode('utf-8'))
log.debug(res.stderr.decode('utf-8'))
return succeeded
def benchmark_speed(bench, target_args):
"""Time the benchmark. "target_args" is a namespace of arguments
specific to the target. Result is a time in milliseconds, or zero on
failure.
For the parallel option, this method must be thread-safe."""
succeeded = True
appdir = os.path.join(gp['bd_benchdir'], bench)
appexe = os.path.join(appdir, bench)
if os.path.isfile(appexe):
arglist = build_benchmark_cmd(bench, target_args)
try:
res = subprocess.run(
arglist,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
cwd=appdir,
timeout=gp['timeout'],
)
if res.returncode != 0:
log.warning(f'Warning: Run of {bench} failed.')
succeeded = False
except subprocess.TimeoutExpired:
log.warning(f'Warning: Run of {bench} timed out.')
succeeded = False
else:
log.warning(f'Warning: {bench} executable not found.')
succeeded = False
# Process results
if succeeded:
exec_time = decode_results(res.stdout.decode('utf-8'),
res.stderr.decode('utf-8'))
succeeded = exec_time > 0
if succeeded:
return exec_time
else:
for arg in arglist:
if arg == arglist[0]:
comm = arg
elif arg == '-ex':
comm += ' ' + arg
else:
comm += " '" + arg + "'"
log.debug('Args to subprocess:')
log.debug(f'{comm}')
if 'res' in locals():
log.debug(res.stdout.decode('utf-8'))
log.debug(res.stderr.decode('utf-8'))
return 0.0
def decode_results(stdout_str, stderr_str):
"""Extract the results from the output string of the run. Return the
elapsed time in milliseconds or zero if the run failed."""
# Return code is in standard output. We look for the string that means we
# hit a breakpoint on _exit, then for the string returning the value.
rcstr = re.search('Breakpoint 3,.*\$1 = (\d+)', stdout_str, re.S)
if not rcstr:
log.debug('Warning: Failed to find return code')
return 0.0
# The start and end cycle counts are in the stderr string
times = re.search('(\d+)\D+(\d+)', stderr_str, re.S)
if times:
ms_elapsed = float(int(times.group(2)) - int(times.group(1))) / 1000.0
return ms_elapsed
# We must have failed to find a time
log.debug('Warning: Failed to find timing')
return 0.0
def decode_results(stdout_str, stderr_str):
"""Extract the results from the output string of the run. Return the
elapsed time in milliseconds or zero if the run failed."""
# Return code is in standard output. We look for the string that means we
# hit a breakpoint on _exit, then for the string returning the value.
rcstr = re.search('Breakpoint 3 at.*exit\.c.*\$1 = (\d+)', stdout_str,
re.S)
if not rcstr:
log.debug('Warning: Failed to find return code')
return 0.0
# The start and end cycle counts are in the stderr string
starttime = re.search('\$1 = (\d+)', stdout_str, re.S)
endtime = re.search('\$2 = (\d+)', stdout_str, re.S)
if not starttime or not endtime:
log.debug('Warning: Failed to find timing')
return 0.0
# Time from cycles to milliseconds
global cpu_mhz
return (int(endtime.group(1)) - int(starttime.group(1))) / cpu_mhz / 1000.0
def decode_results(stdout_str, stderr_str):
"""Extract the results from the output string of the run. Return the
elapsed time in milliseconds or zero if the run failed."""
global cpu_per
#check that simulation returned successfully
if not re.search('SIMULATION PASSED', stdout_str, re.S):
log.debug('Warning: Simulation reporting error')
return 0.0
# Match "RES: <cycles>"
rcstr = re.search('RES: (\d+)', stdout_str, re.S)
if not rcstr:
log.debug('Warning: Failed to find result')
return 0.0
time = float(rcstr.group(1))*cpu_per
time_ms = time * 1000
return time_ms
# We must have failed to find a time
log.debug('Warning: Failed to find timing')
return 0.0
def decode_results(stdout_str, stderr_str):
"""Extract the results from the output string of the run. Return the
elapsed time in milliseconds or zero if the run failed."""
proc = subprocess.Popen(["./terminal.py", "--speed", "115200", "/dev/ttyUSB1"], stdout=subprocess.PIPE)
line = b""
while True:
c = proc.stdout.read(1)
if c != b'\n':
line += c
else:
log.debug(line.decode("utf-8", errors="ignore").encode("ascii", errors="ignore"))
line = line.decode("utf-8", errors="ignore")
time_re = re.search('Bench time:(\\d+)', line, re.S)
if time_re:
time = int(time_re.group(1))
proc.kill()
return time / cpu_mhz / 1000.0
line = b''
raise
def decode_results(stdout_str, stderr_str):
"""Extract the results from the output string of the run. Return the
elapsed time in milliseconds or zero if the run failed."""
# See above in build_benchmark_cmd how we record the return value and
# execution time. Return code is in standard output. Execution time is in
# standard error.
# Match "RET=rc"
rcstr = re.search('^RET=(\d+)', stdout_str, re.M)
if not rcstr:
log.debug('Warning: Failed to find return code')
return 0.0
# Match "Real time: dd.ddd"
time = re.search('^Real time: (\d+)[.](\d+)', stdout_str, re.S)
if time:
ms_elapsed = float(time.group(1) + '.' + time.group(2))
# Return value cannot be zero (will be interpreted as error)
return max(float(ms_elapsed), 0.001)
# We must have failed to find a time
log.debug('Warning: Failed to find timing')
return 0.0
def decode_results(stdout_str, stderr_str):
"""Extract the results from the output string of the run. Return the
elapsed time in milliseconds or zero if the run failed."""
#print("OUT")
#print(stdout_str)
#print("ERR")
#print(stderr_str)
# The start and end cycle counts are in the stderr string
start_at = re.search('mTime 1 : (\d+)', stdout_str, re.S)
end_at = re.search('mTime 2 : (\d+)', stdout_str, re.S)
if not start_at or not end_at:
log.debug('Warning: Failed to find timing')
return 0.0
time = int(end_at.group(1)) - int(start_at.group(1))
# print(time)
# Time from cycles to milliseconds
global cpu_mhz
return time / cpu_mhz / 1000.0
def decode_results(stdout_str, stderr_str):
"""Extract the results from the output string of the run. Return the
elapsed time in milliseconds or zero if the run failed."""
# print("OUT")
# print(stdout_str)
# print("ERR")
# print(stderr_str)
# The start and end cycle counts are in the stderr string
time = re.search('\$1 = (\d+)', stdout_str, re.S)
main_result = re.search('\$2 = (\d+)', stdout_str, re.S)
if not time or not main_result:
log.debug('Warning: Failed to find timing')
return 0.0
if main_result.group(1) != "0":
log.debug('Warning: test failure')
return 0.0
# print(time)
# Time from cycles to milliseconds
global cpu_mhz
return (int(time.group(1))) / cpu_mhz / 1000.0
def link_benchmark(bench):
"""Link the benchmark, "bench".
Return True if link is successful, False otherwise."""
abs_bd_b = os.path.join(gp['bd_benchdir'], bench)
if not os.path.isdir(abs_bd_b):
log.warning(
'Warning: Unable to find build directory for '
+ f'benchmark {bench}'
)
return False
# Use a flag to track warnings, but keep going through warnings.
succeeded = True
# Create the argument list
binlist = create_link_binlist(abs_bd_b)
if not binlist:
succeeded = False
arglist = create_link_arglist(bench, binlist)
# Run the link
try:
res = subprocess.run(
arglist,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
cwd=abs_bd_b,
timeout=300,
)
if res.returncode != 0:
log.warning(f'Warning: Link of benchmark "{bench}" failed')
succeeded = False
except subprocess.TimeoutExpired:
log.warning(f'Warning: link of benchmark "{bench}" timed out')
succeeded = False
if not succeeded:
log.debug('Args to subprocess:')
log.debug(f'{arglist}')
log.debug(res.stdout.decode('utf-8'))
log.debug(res.stderr.decode('utf-8'))
return succeeded
def link_benchmark(bench):
"""Link the benchmark, "bench".
Return True if link is successful, False otherwise."""
abs_bd_b = os.path.join(gp['bd_benchdir'], bench)
if not os.path.isdir(abs_bd_b):
log.warning(
'Warning: Unable to find build directory for benchmark {bench}'.
format(bench=bench))
return False
# Use a flag to track warnings, but keep going through warnings.
succeeded = True
# Create the argument list
binlist = create_link_binlist(abs_bd_b)
if not binlist:
succeeded = False
arglist = create_link_arglist(bench, binlist)
# Run the link
if gp['verbose']:
log.debug('Linking in directory {abs_bd_b}'.format(abs_bd_b=abs_bd_b))
log.debug(arglist_to_str(arglist))
try:
res = subprocess.run(
arglist,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
cwd=abs_bd_b,
timeout=gp['timeout'],
)
if res.returncode != 0:
log.warning('Warning: Link of benchmark "{bench}" failed'.format(
bench=bench))
succeeded = False
log.debug(res.stdout.decode('utf-8'))
log.debug(res.stderr.decode('utf-8'))
except subprocess.TimeoutExpired:
log.warning('Warning: link of benchmark "{bench}" timed out'.format(
bench=bench))
succeeded = False
if not succeeded:
log.debug('In directory "' + abs_bd_b + '"')
log.debug('Command was:')
log.debug(arglist_to_str(arglist))
return succeeded
def compile_file(f_root, srcdir, bindir, suffix='.c'):
"""Compile a single C or assembler file, with the given file root, "f_root",
suffix "suffix", from the source directory, "srcdir", in to the bin
directory, "bindir" using the general preprocessor and C compilation
flags.
Return True if the compilation success, False if it fails. Log
everything in the event of failure
"""
abs_src = os.path.join(srcdir, '{root}{suff}'.format(root=f_root,
suff=suffix))
abs_bin = os.path.join(bindir, '{root}.o'.format(root=f_root))
# Construct the argument list
arglist = [gp["cc"]]
arglist.extend(gp['cflags'])
arglist.extend(gp['cc_output_pattern'].format(
'{root}.o'.format(root=f_root)).split())
arglist.extend(gp['cc_input_pattern'].format(abs_src).split())
# Run the compilation, but only if the source file is newer than the
# binary.
succeeded = True
res = None
if not os.path.isfile(abs_bin) or (os.path.getmtime(abs_src) >
os.path.getmtime(abs_bin)):
if gp['verbose']:
log.debug('Compiling in directory {bin}'.format(bin=bindir))
log.debug(arglist_to_str(arglist))
try:
res = subprocess.run(
arglist,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
cwd=bindir,
timeout=gp['timeout'],
)
if res.returncode != 0:
log.warning(
'Warning: Compilation of {root}{suff} from source directory {src} to binary directory {bin} failed'
.format(root=f_root, suff=suffix, src=srcdir, bin=bindir))
succeeded = False
except subprocess.TimeoutExpired:
log.warning(
'Warning: Compilation of {root}{suff} from source directory {src} to binary directory {bin} timed out'
.format(root=f_root, suff=suffix, src=srcdir, bin=bindir))
succeeded = False
if not succeeded:
log.debug('Command was:')
log.debug(arglist_to_str(arglist))
log.debug(res.stdout.decode('utf-8'))
log.debug(res.stderr.decode('utf-8'))
return succeeded
