GPU matlab test performance worst than CPU - Who knows why?

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marcelo silva
marcelo silva 2021-9-30
回答： Jason Ross 2021-9-30
I followed this instructions to test and compare performance between GPU e CPU. I have a NVIDIA GeForce RTX 2070 running with matlab R2017b
Measuring GPU Performance - MATLAB & Simulink Example - MathWorks Nordic.
Somebody has a suggestion about what is wrong? GPU was not properly working ? GPU is really worst than CPU in my case?

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回答（1 个）

Jason Ross
Jason Ross 2021-9-30
Like other GeForce cards, double precision performance is significantly less than single precision performance. According to this Wikipedia page, GFLOPS for a RTX 2070 doing double precision math max out at 200-250 GFLOPS depending on model and if it's using boost. If you used singles you should be seeing more like 6500-8000. The card used in that example was a K40c, which can do 1430–1680 GFLOPS double precision.
There are similar other charts on Wikipedia for other GPUs that show their performance results.

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