Hello All,
I was so excited to test new the new Intel Xeon Silver 4114 CPU just to find out that with AVX512 enabled the performance of the matrix multiplication is the same as with legacy SSE4. If I restrict the MKL library to use AVX2 only, then the speed of the computation is twice as fast. What I am doing wrong here? The library seem to respond OK to the following call (here in FORTRAN):
stat=mkl_cbwr_set (MKL_CBWR_AVX512)
with stat == 0. But the computation slows down by a factor of two compared to the speed I get after setting the environment variable MKL_ENABLE_INSTRUCTIONS to AVX2. Is possible that this is what I should get for this particular CPU? The MKL version is 2018.2.199.
Thanks!
Tomasz