5 ms·
Hmm... maybe it was the Intel linear algebra stuff (MKL?) that was the source of that speedup
by peatmoss 9y ago
Hmm... maybe it was the Intel linear algebra stuff (MKL?) that was the source of that speedup
- gnufx 9y agoMaybe. For what it's worth, OpenBLAS is at least as fast on all AMD64 micro-architectures before AVX512 that I've had access to. That's for DGEMM, which is what normally matters; MKL may well have optimized more kernels than OpenBLAS has. Unfortunately, many cling to performance myths in the face of measurements.
- peatmoss 9y agoYeah, my last experience with paid MKL libs / Intel compilers was some years ago now—before I ever remember seeing anything about OpenBLAS. I know OpenBLAS has been a big performance boon. And to be clear, I’d love to see Free and Open Source options be the standard for HPC. It sounds like we may be much closer to that state today than we were years ago when last I worked with people highly concerned about performance in this area. That’s great news.