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clMath slows on CPU?

Question asked by craucy on Mar 16, 2015

Hi everyone, I was wondering if it's normal that clMath is mush slower than MKL when running on an intel CPU (about 10 times slower for a 5000*5000 complex double matrix)? I was told that the intel opencl uses the SSE instructions as well so I don't understand such a big difference of efficiency...