I've seen OpenMP-based, non-BLAS implementations beat out MKL, on Intel hardware nonetheless. We emailed the MKL folks and they just shrugged. :) Don't presume

I've seen OpenMP-based, non-BLAS implementations beat out MKL, on Intel hardware nonetheless. We emailed the MKL folks and they just shrugged. :) Don't presume that MKL is the lower limit on performance.