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[FRONTEND] let CacheManager write to temp dir instead of temp file #4295

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Jul 10, 2024
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[FRONTEND] let CacheManager write to temp dir instead of temp file #4295

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8 changes: 6 additions & 2 deletions python/triton/runtime/cache.py
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Original file line number Diff line number Diff line change
Expand Up @@ -120,14 +120,18 @@ def put(self, data, filename, binary=True) -> str:
rnd_id = str(uuid.uuid4())
# we use the PID in case a bunch of these around so we can see what PID made it
pid = os.getpid()
# use tempfile to be robust against program interruptions
temp_path = f"{filepath}.tmp.pid_{pid}_{rnd_id}"
# use temp dir to be robust against program interruptions
temp_dir = os.path.join(self.cache_dir, f"tmp.pid_{pid}_{rnd_id}")
os.makedirs(temp_dir, exist_ok=True)
temp_path = os.path.join(temp_dir, filename)

mode = "wb" if binary else "w"
with open(temp_path, mode) as f:
f.write(data)
# Replace is guaranteed to be atomic on POSIX systems if it succeeds
# so filepath cannot see a partial write
os.replace(temp_path, filepath)
os.removedirs(temp_dir)
return filepath


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