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fsadough
Staff
Staff

Re: Radeon Pro VII FP64 performance on ROCm

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I have filed a ticket for our Software engineers

fsadough
Staff
Staff

Re: Radeon Pro VII FP64 performance on ROCm

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What are the numbers you are getting with complex-complex large 3d FFTs?

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tinux
Adept I

Re: Radeon Pro VII FP64 performance on ROCm

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On the Radeon Pro VII: 16.0856 s

On the Radeon VII: 16.4581 s

 

EDIT: This is with this code.

fsadough
Staff
Staff

Re: Radeon Pro VII FP64 performance on ROCm

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Apparently FFT is memory bound, and that's why Radeon VII and RP VII perform the same - they both have memory bandwidth of 1GB/s. Try "vkFFT" instead.

https://github.com/DTolm/VkFFT 

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tinux
Adept I

Re: Radeon Pro VII FP64 performance on ROCm

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@fsadoughThank you so much!

I understand. I will run some tests on more normal computations and compare the performance between the pro and non-pro GPUs. It will take a bit of time though. I will give vkFFT a try. This tip is very helpful!

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fsadough
Staff
Staff

Re: Radeon Pro VII FP64 performance on ROCm

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