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Add check before setting multiprocessing context to prevent the RuntimeError #4620

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merged 3 commits into from
Aug 20, 2024
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Add check before setting multiprocessing context to prevent the RuntimeError #4620

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6881c8b
Add check before setting multiprocessing context to prevent the runti…
xuyumeng Feb 5, 2024
bcd0850
Update __init__.py
xuyumeng Mar 5, 2024
4dec022
wrap the lines
May 4, 2024
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9 changes: 7 additions & 2 deletions pycbc/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -186,8 +186,13 @@ def makedir(path):
# preserve common state information which we have relied on when using
# multiprocessing based pools.
import multiprocessing
if hasattr(multiprocessing, 'set_start_method'):
multiprocessing.set_start_method('fork')
if multiprocessing.get_start_method(allow_none=True) is None:
if hasattr(multiprocessing, 'set_start_method'):
multiprocessing.set_start_method('fork')
elif multiprocessing.get_start_method() != 'fork':
warnings.warn("PyCBC requires the use of the 'fork' start method"
" for multiprocessing, it is currently set to {}"
.format(multiprocessing.get_start_method()))
else:
HAVE_OMP = True

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