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Use CPU inputs for PT2 inference full model export #2608

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Use CPU inputs for PT2 inference full model export #2608

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7 changes: 6 additions & 1 deletion torchrec/sparse/jagged_tensor.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1175,7 +1175,12 @@ def _maybe_compute_length_per_key(
values: Optional[torch.Tensor],
) -> List[int]:
if length_per_key is None:
if len(keys) and values is not None and values.is_meta:
if (
len(keys)
and values is not None
and values.is_meta
and not is_non_strict_exporting()
):
# create dummy lengths per key when on meta device
total_length = values.numel()
_length = [total_length // len(keys)] * len(keys)
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