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cp: fix(test): clone mmap-backed tensors before overwriting safetensors file (#3335) #3441

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Merged
yaoyu-33 merged 1 commit into from
Apr 21, 2026
Merged

cp: fix(test): clone mmap-backed tensors before overwriting safetensors file (#3335) #3441

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4 changes: 3 additions & 1 deletion tests/functional_tests/test_groups/models/qwen_vl/test_qwen35_vl_conversion.py
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Original file line number Diff line number Diff line change
Expand Up @@ -335,7 +335,9 @@ def _fuse_moe_expert_weights(model_dir: Path, num_experts: int) -> None:
if not keys_to_remove:
return

new_state_dict = {k: v for k, v in state_dict.items() if k not in keys_to_remove}
# Clone kept tensors so they are no longer backed by the mmap of weights_path,
# which will be overwritten by save_file below.
new_state_dict = {k: v.clone() for k, v in state_dict.items() if k not in keys_to_remove}

for prefix, experts in layers.items():
gate_up = torch.stack(
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