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GPU Data-tiled multi-mma: subgroup dimensions should be outer #19521

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merged 1 commit into from
Dec 19, 2024

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bjacob
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@bjacob bjacob commented Dec 18, 2024

This was already the idea, but there was an accidental exception: in the accumulator tensor, if there was both a unroll_m dimension and subgroup_n dimension, then the subgroup_n dimension wasn't on the outside of unroll_m as it was meant to be.

Noticed this when it required corresponding strides in the ukernel.

Signed-off-by: Benoit Jacob <jacob.benoit.1@gmail.com>
@bjacob bjacob marked this pull request as ready for review December 18, 2024 22:19
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@hanhanW hanhanW left a comment

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good catch!

@bjacob bjacob merged commit ed9a028 into main Dec 19, 2024
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@bjacob bjacob deleted the users/bjacob/subgroup-dim-outer branch December 19, 2024 14:42
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3 participants