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Use the CPU count available to the process instead of total CPU count

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Addresses https://github.com/google-deepmind/alphafold3/issues/513

PiperOrigin-RevId: 803078244
Change-Id: I6446deac260f13ad08873d1c464e65444c099283
This commit is contained in:
Augustin Zidek
2025-09-04 10:20:08 -07:00
committed by Copybara-Service
parent b467f92160
commit 85a03ec086
1 changed files with 4 additions and 3 deletions
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7
run_alphafold.py
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@ -24,7 +24,6 @@ import csv
import dataclasses
import datetime
import functools
import multiprocessing
import os
import pathlib
import shutil
@ -178,14 +177,16 @@ _SEQRES_DATABASE_PATH = flags.DEFINE_string(
# Number of CPUs to use for MSA tools.
_JACKHMMER_N_CPU = flags.DEFINE_integer(
'jackhmmer_n_cpu',
min(multiprocessing.cpu_count(), 8),
# Unfortunately, os.process_cpu_count() is only available in Python 3.13+.
min(len(os.sched_getaffinity(0)), 8),
'Number of CPUs to use for Jackhmmer. Defaults to min(cpu_count, 8). Going'
' above 8 CPUs provides very little additional speedup.',
lower_bound=0,
)
_NHMMER_N_CPU = flags.DEFINE_integer(
'nhmmer_n_cpu',
min(multiprocessing.cpu_count(), 8),
# Unfortunately, os.process_cpu_count() is only available in Python 3.13+.
min(len(os.sched_getaffinity(0)), 8),
'Number of CPUs to use for Nhmmer. Defaults to min(cpu_count, 8). Going'
' above 8 CPUs provides very little additional speedup.',
lower_bound=0,