On Thu, Mar 3, 2016 at 8:31 AM, Florian Weimer <fw@xxxxxxxxxxxxx> wrote: > * Victor Rodriguez: > >> What HW are you ussing ? > > Both hardware with amd without avx512f capability. There is run-time > detection for it, but for it to be effective, most of the program has > to be compiled without -mavx512f, otherwise the program will use > avx512f instructions before getting to the detection code. Have you try Function Multi Versioning ? https://clearlinux.org/features/function-multiversioning-fmv
