[BUG] EpilogueTileAuto doesn't work when tile shape N={48, 80, 96, 112, ...} on SM100

[Algy]

For non-blockscaled blackwell gemm, theoretically all multiple number of 16 as ctaN = {16, 32, 48, 64, 80, ...} should be supported as the UMMA specification.

However, I get compilation error with those CtaNs other than 16, 32, 64, 96, 128, 192, 256.

For example, when I set the tile shape of the example 70_blackwell_fp16_gemm.cu to <_64, _48, _64>, I encounter some long cryptic error that appears to be related to shape divisibility.

PR #2220 addresses this kind of issue with Hopper kernels, so I will come up with the similar approach to this issue soon.

[Algy]

I have come up with the PR #2269 so it can handle multiple of 16 but still have problem with handling mulitple of 8 such as 24, 56, 72. Any idea?

EDIT:

It appears ctaN of multiple of 8 makes epi_tile_N be 8 in most cases. Any reason when epi_tile_N being 8 doesn't work?

[github-actions]

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[github-actions]

This issue has been labeled inactive-90d due to no recent activity in the past 90 days. Please close this issue if no further response or action is needed. Otherwise, please respond with a comment indicating any updates or changes to the original issue and/or confirm this issue still needs to be addressed.