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[QST] What's the difference between make_fragment_like and make_tensor_like? #2228

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iryanin opened this issue Apr 7, 2025 · 3 comments
Open

[QST] What's the difference between make_fragment_like and make_tensor_like? #2228

iryanin opened this issue Apr 7, 2025 · 3 comments
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@iryanin
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iryanin commented Apr 7, 2025

What is your question?
Since make_fragment_like and make_tensor_like both creates tensor resided in registers, what's the difference between them?
@irasin
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irasin commented Apr 17, 2025

the result layout is different

@hwu36
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hwu36 commented Apr 30, 2025

@Junkai-Wu

@Junkai-Wu
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Their output layout is different. Please check their definitions:
make_fragment_like: https://github.com/NVIDIA/cutlass/blob/main/include/cute/layout.hpp#L455
make_tensor_like: https://github.com/NVIDIA/cutlass/blob/main/include/cute/tensor_impl.hpp#L424

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@irasin @hwu36 @iryanin @Junkai-Wu