I don't know if you are interested or not, but broadwell probably runs some of the Skylake assembly code. If you drop it in the haswell directory you set up for your machine and time the functions with speed, you can probably figure out if any of the existing Skylake code makes Broadwell run faster.
Of course, we ultimately want to write assembly code for Broadwell and superoptimise it, but this won't happen for a while unless an assembly expert volunteers to do that kind of work. On 14 February 2017 at 10:29, Bill Hart <goodwillh...@googlemail.com> wrote: > Thanks very much! I'll insert these today. I'll attach the broadwell ones > to a ticket, until someone can sort out the configuration for that system. > There are probably numerous cpuid family/model pairs that correspond to > Broadwell, so we'll have to add these as they become known. > > On 14 February 2017 at 10:24, Isuru Fernando <isu...@gmail.com> wrote: > >> Attached are tuning values for nehalem, ivybridge, broadwell and skylake. >> (Also cpuinfo for the broadwell one) >> >> Isuru Fernado >> >> On Tue, Feb 14, 2017 at 1:29 PM, 'Bill Hart' via mpir-devel < >> mpir-devel@googlegroups.com> wrote: >> >>> Apparently if you have a very recent machine, yasm may fail to build the >>> assembly files for your architecture. To get around this, install the >>> latest yasm [1] and use MPIR's --with-system-yasm option. >>> >>> If your system is recent and detects as core2 or k8 or simply x86_64 or >>> something else obviously out-of-date, when tuning, please also send us a >>> copy of cat /proc/cpuinfo so we can add support for your processor to MPIR. >>> >>> Bill. >>> >>> [1] http://yasm.tortall.net/ >>> >>> On 13 February 2017 at 18:41, Bill Hart <goodwillh...@googlemail.com> >>> wrote: >>> >>>> Hi all, >>>> >>>> MPIR has been modified recently, and new tuning crossovers have been >>>> added. >>>> >>>> If you have a machine that you want MPIR to run fast on, we would >>>> really appreciate help getting tuning values for your machine. Here is how. >>>> >>>> git clone https://github.com/wbhart/mpir >>>> cd mpir >>>> ./configure --enable-gmpcompat >>>> make -j4 >>>> make check >>>> cd tune >>>> make tune >>>> >>>> Please attach the tuning values that are printed to this post. Please >>>> ensure that the first line is not missing, e.g. >>>> >>>> Parameters for ./mpn/x86_64/k8/k10/k102/gmp-mparam.h >>>> >>>> as this tells us what machine the values are for. >>>> >>>> If the tuning program crashes, or starts to take too long, just send us >>>> the values you have. >>>> >>>> Any help that people can provide is really appreciated. >>>> >>>> Note that we DON'T require tuning values for the following arches: >>>> >>>> mpn/x86_64/k8/k10/k102 >>>> mpn/x86_64/haswell >>>> >>>> If someone already attached values for your arch, no need to supply >>>> them again. >>>> >>>> Bill. >>>> >>>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "mpir-devel" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to mpir-devel+unsubscr...@googlegroups.com. >>> To post to this group, send email to mpir-devel@googlegroups.com. >>> Visit this group at https://groups.google.com/group/mpir-devel. >>> For more options, visit https://groups.google.com/d/optout. >>> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "mpir-devel" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to mpir-devel+unsubscr...@googlegroups.com. >> To post to this group, send email to mpir-devel@googlegroups.com. >> Visit this group at https://groups.google.com/group/mpir-devel. >> For more options, visit https://groups.google.com/d/optout. >> > > -- You received this message because you are subscribed to the Google Groups "mpir-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to mpir-devel+unsubscr...@googlegroups.com. To post to this group, send email to mpir-devel@googlegroups.com. Visit this group at https://groups.google.com/group/mpir-devel. For more options, visit https://groups.google.com/d/optout.
