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fix: set multiprocessing start method to 'fork' in main function(python3.14 defaults to forkserver) #5019

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fix: set multiprocessing start method to 'fork' in main function(python3.14 defaults to forkserver) #5019

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27e58b3
fix: set multiprocessing start method to 'fork' in main function(pyth…
OutisLi Oct 20, 2025
a4262d6
refactor and exclude windows
OutisLi Oct 20, 2025
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9 changes: 9 additions & 0 deletions deepmd/main.py
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Original file line number Diff line number Diff line change
Expand Up @@ -984,6 +984,15 @@ def main(args: Optional[list[str]] = None) -> None:
RuntimeError
if no command was input
"""
try:
import multiprocessing

# Force fork multiprocessing start method.
multiprocessing.set_start_method("fork", force=True)
logging.info("Successfully set multiprocessing start method to 'fork'.")
except Exception as e:
logging.warning(f"Could not set multiprocessing start method: {e}")

args = parse_args(args=args)

if args.backend not in BACKEND_TABLE:
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