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Validate checkpoint GPU UUID inputs early #2086

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Validate checkpoint GPU UUID inputs early #2086

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c62413e
Validate checkpoint GPU UUID inputs
aryanputta May 14, 2026
083e411
Narrow checkpoint GPU UUID restore inputs
aryanputta May 16, 2026
3261c10
Restore checkpoint CUuuid compatibility
aryanputta Jun 8, 2026
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11 changes: 9 additions & 2 deletions cuda_core/cuda/core/checkpoint.py
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Original file line number Diff line number Diff line change
Expand Up @@ -239,14 +239,21 @@ def _as_cuuuid(driver, value, buffers):
the ``"xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"`` format returned by
:attr:`Device.uuid`.
"""
if isinstance(value, driver.CUuuid):
return value
if isinstance(value, str):
raw = bytes.fromhex(value.replace("-", ""))
try:
raw = bytes.fromhex(value.replace("-", ""))
except ValueError:
raise ValueError(
f"GPU UUID string must be 32 hex characters (with optional hyphens), got {value!r}"
) from None
if len(raw) != 16:
raise ValueError(f"GPU UUID string must be 32 hex characters (with optional hyphens), got {value!r}")
buf = _ctypes.create_string_buffer(raw, 16)
buffers.append(buf)
return driver.CUuuid(_ctypes.addressof(buf))
return value
raise TypeError("GPU UUID values must be CUDA UUID objects or UUID strings")


__all__ = [
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