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cpu_count *2 is a step too far, the default is faster

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wiredfool 2014-03-05 21:15:27 -08:00
parent bbd68ea9d4
commit 187e26524f
1 changed files with 2 additions and 7 deletions
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mp_compile.py
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@ -1,7 +1,7 @@
# A monkey patch of the base distutils.ccompiler to use parallel builds # A monkey patch of the base distutils.ccompiler to use parallel builds
# Tested on 2.7, looks to be identical to 3.3. # Tested on 2.7, looks to be identical to 3.3.
from multiprocessing import Pool from multiprocessing import Pool, cpu_count
from distutils.ccompiler import CCompiler from distutils.ccompiler import CCompiler
# hideous monkeypatching. but. but. but. # hideous monkeypatching. but. but. but.
@ -29,12 +29,7 @@ def _mp_compile(self, sources, output_dir=None, macros=None,
depends, extra_postargs) depends, extra_postargs)
cc_args = self._get_cc_args(pp_opts, debug, extra_preargs) cc_args = self._get_cc_args(pp_opts, debug, extra_preargs)
try: pool = Pool()
processes = cpu_count() * 2
except:
processes = 2
pool = Pool(processes)
print ("Building using %d processes" % pool._processes) print ("Building using %d processes" % pool._processes)
arr = [(self, obj, build, cc_args, extra_postargs, pp_opts) for obj in objects] arr = [(self, obj, build, cc_args, extra_postargs, pp_opts) for obj in objects]
results = pool.map_async(_mp_compile_one,arr) results = pool.map_async(_mp_compile_one,arr)