Fix cumsum dtype - #4511
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Aug 21, 2026
| if dtype is not None: | ||
| acc_dtype = dtype | ||
| elif not input_dtype.is_floating_point: | ||
| acc_dtype = torch.int64 |
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Why this is int64? Can it be int32 or other non-float dtype?
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You can see here it defaults to int64 in PyTorch
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Can you also add a bf 16 test case? |
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Description
The cumsum converter drops the keyword-only dtype argument and always seeds the TRT loop accumulator as float32, so integer / typed cumsums disagree with PyTorch.
Forward dtype from the aten node and use a typed zero for the recurrence seed.
Type of change
Please delete options that are not relevant and/or add your own.
Checklist: