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fix: use chunked reading for SHA256 to prevent OOM crash on large model files #23

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fix: use chunked reading for SHA256 to prevent OOM crash on large model files #23

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9ee5b13
fix: use chunked reading for SHA256 checksum to prevent OOM on large …
amathxbt May 9, 2026
197828c
fix: use chunked reading for SHA256 to prevent OOM on large model files
amathxbt May 9, 2026
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6 changes: 4 additions & 2 deletions demo/nesa/download.py
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Original file line number Diff line number Diff line change
Expand Up @@ -286,8 +286,10 @@ def check_model_files(self, model, branch, links, sha256, output_folder):
continue

with open(output_folder / sha256[i][0], "rb") as f:
bytes = f.read()
file_hash = hashlib.sha256(bytes).hexdigest()
hasher = hashlib.sha256()
for chunk in iter(lambda: f.read(8192), b""):
hasher.update(chunk)
file_hash = hasher.hexdigest()
if file_hash != sha256[i][1]:
print(f'Checksum failed: {sha256[i][0]} {sha256[i][1]}')
validated = False
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