There's https://github.com/google/cpu_features
But probably this issue would be better dealt with in a script than in libj. You can include a libj-avx and a libj-noavx and symlink the appropriate one or use secondary packages or rename one libj and delete the other or any of a variety of other techniques, depending on what seems best for the distro in question. Part of the reason I am thinking this is that the parts of the code where this decision needs to be made tends to be performance critical, so it's best to make the decision once, ahead of time. (And of course if you're on linux you can look in /proc/cpuinfo to determine whether avx is supported.) Thanks, -- Raul On Tue, Oct 6, 2020 at 11:42 PM ethiejiesa via General <[email protected]> wrote: > > Forgive me for piggy-backing on OP, but would upstream be interested in work > on > merging the separate non-avx, avx, and avx2 outputs into a single libj.so that > auto-detects cpu features at startup and sets up the primitive-to-function map > accordingly? > > I don't have concrete work in this direction, but I do have some bit of > background in doing things like this. > > As the package manager of J for a couple Linux distros, we have to ship all > the > binaries anyway and write a wrapper script to detect CPU features at startup > anyway, so along this single dimension it would be a win. > > My question is which way upstream's cost-benefit scale tips when considering > everything else. > > Cheers! > > Raul Miller <[email protected]> wrote: > > Wikipedia concurs: > > https://en.wikipedia.org/wiki/List_of_Intel_Core_M_microprocessors > > > > Also, on a macbook, you can run this command line in terminal to see > > what cpu features are supported on your machine: > > > > sysctl machdep.cpu.features > > > > Thanks, > > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
