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zhuzxy
Journeyman III
‎09-20-2011 07:08 AM

How to utilize the auto vectorizing advantage for OpenCL on CPU?

when I use vector in the opencl code, like int4/char 4/uchar 8, is it guaranteed to be translated using SSE instructions on CPU?  It seems not in my cl code after check the amd app kernel analyzer. What shall I pay attention to in my cl code when I want to use the vectorize abilities for my opencl on CPU?

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genaganna
Journeyman III
‎09-20-2011 12:27 PM

Originally posted by: zhuzxy when I use vector in the opencl code, like int4/char 4/uchar 8, is it guaranteed to be translated using SSE instructions on CPU?  It seems not in my cl code after check the amd app kernel analyzer. What shall I pay attention to in my cl code when I want to use the vectorize abilities for my opencl on CPU?


It will generate SSE instructions if you use vector types and there is a equivalent SSE instructions exist.

Please paste your kernel code there which allows us to verify whether it is generated or not

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