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false shared memory config for sm_86 gpu #19595

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ziereis opened this issue Jan 3, 2025 · 0 comments
Open

false shared memory config for sm_86 gpu #19595

ziereis opened this issue Jan 3, 2025 · 0 comments
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@ziereis
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ziereis commented Jan 3, 2025

What happened?

sm_86 gpus like a rtx3070 get a incorrect workgroup memory config of 163 KB when the available is only 100KB.

reference:
"For devices of compute capability 8.0 (i.e., A100 GPUs) the maximum shared memory per thread block is 163 KB. For GPUs with compute capability 8.6 maximum shared memory per thread block is 99 KB."

https://docs.nvidia.com/cuda/ampere-tuning-guide/index.html

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@ziereis ziereis added the bug 🐞 Something isn't working label Jan 3, 2025
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