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[GH-ISSUE #178] m_grouped_fp8_gemm_nt_contiguous stuck on matrix shape (1, 1,24576, 1536) #101

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opened 2026-10-26 21:12:36 +00:00 by bsakaguchi · 3 comments
bsakaguchi commented 2026-10-26 21:12:36 +00:00
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Originally created by @lizhiqihhh on GitHub (Aug 29, 2025).
Original GitHub issue: https://github.com/deepseek-ai/DeepGEMM/issues/178

Hi, there,

I am testing the kernel m_grouped_fp8_gemm_nt_contiguous with [group, m per group, N ,K ] = [1, 1, 24576, 1536] on H200. However, the program is stuck. Could you please advise on how to resolve this?

Many thanks!

Originally created by @lizhiqihhh on GitHub (Aug 29, 2025). Original GitHub issue: https://github.com/deepseek-ai/DeepGEMM/issues/178 Hi, there, I am testing the kernel **m_grouped_fp8_gemm_nt_contiguous** with [group, m per group, N ,K ] = [1, 1, 24576, 1536] on H200. However, the program is stuck. Could you please advise on how to resolve this? Many thanks!
bsakaguchi commented 2026-10-26 21:12:38 +00:00
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@LyricZhao commented on GitHub (Aug 29, 2025):

cc @zheanxu

<!-- gh-comment-id:3236058076 --> @LyricZhao commented on GitHub (Aug 29, 2025): cc @zheanxu
bsakaguchi commented 2026-10-26 21:12:39 +00:00
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@zheanxu commented on GitHub (Aug 29, 2025):

Hi @lizhiqihhh, I tested m_grouped_fp8_gemm_nt_contiguous with the matrix shape [1, 1, 24576, 1536] and found it didn’t get stuck. In addition, this kernel assumes that the m of each group is aligned to 128; otherwise, it could cause low performance or other unexpected issues.

<!-- gh-comment-id:3236145703 --> @zheanxu commented on GitHub (Aug 29, 2025): Hi @lizhiqihhh, I tested m_grouped_fp8_gemm_nt_contiguous with the matrix shape [1, 1, 24576, 1536] and found it didn’t get stuck. In addition, this kernel assumes that the m of each group is aligned to 128; otherwise, it could cause low performance or other unexpected issues.
bsakaguchi commented 2026-10-26 21:12:39 +00:00
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@lizhiqihhh commented on GitHub (Sep 1, 2025):

Thanks

<!-- gh-comment-id:3241495245 --> @lizhiqihhh commented on GitHub (Sep 1, 2025): Thanks
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