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Fall back to cpu_count when psutil is unavailable at build time #419

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Fall back to cpu_count when psutil is unavailable at build time #419

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9 changes: 7 additions & 2 deletions gfootball/build_game_engine.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -21,8 +21,13 @@ if [[ "$OSTYPE" == "darwin"* ]] ; then
fi

# Take into account # of cores and available RAM for deciding on compilation parallelism.
# TODO: Try importing psutil and if failed fall back to 1 thread
PARALLELISM=$(python3 -c 'import psutil; import multiprocessing as mp; print(int(max(1,min((psutil.virtual_memory().available/1000000000-1)/0.5, mp.cpu_count()))))')
# Try importing psutil; if unavailable, fall back to CPU count (or 1 if that fails).
PARALLELISM=$(python3 -c 'import multiprocessing as mp
try:
import psutil
print(int(max(1, min((psutil.virtual_memory().available/1000000000-1)/0.5, mp.cpu_count()))))
except ImportError:
print(mp.cpu_count())' 2>/dev/null || echo 1)

# Delete pre-existing version of CMakeCache.txt to make 'python3 -m pip install' work.
rm -f third_party/gfootball_engine/CMakeCache.txt
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