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GPU Det and Directsum are ridiculously slow #485

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jeffry1829 opened this issue Oct 1, 2024 · 3 comments
Open

GPU Det and Directsum are ridiculously slow #485

jeffry1829 opened this issue Oct 1, 2024 · 3 comments

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@jeffry1829
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GPU Det and Directsum are ridiculously slow

Det uses cusolver ?getrf

Currently not sure whether this only happens to these two methods
@IvanaGyro
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What did you compare them to, the CPU version? How large is the input tensor? For inspecting the reason, myebe the NVDIA profiler can help.

@yingjerkao
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GPU Det and Directsum are ridiculously slow

Det uses cusolver ?getrf

Currently not sure whether this only happens to these two methods

Are you benchmarking against CPU version? Or old magma version?

@yingjerkao
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I believe this issue was due to the fact that our DGX II has been hacked. Should perform the benchmark on some other machines.

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@yingjerkao @jeffry1829 @IvanaGyro