polarnick

OpenCL is ~twice faster than SPIR version

Discussion created by polarnick on Oct 13, 2017
Latest reply on Nov 9, 2017 by dipak

Hi!

My problem is the same as Slow SPIR

 

But I think that my problem is with VGPRs usage. Under SPIR they are used much more. How can I investigate to workaround this behaviour? I can provide executable with OpenCL and executable with SPIR. But I wonder, if the twice slower SPIR performance for so many years wasn't investigated? Because I don't think that pure OpenCL without SPIR can be used in commercial apps.

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