I suspect the cause is OpenBLAS. While this library is built with DYNAMIC_ARCH=1, there is still the non-performance critical code which will use whatever instructions are available on the machine at compile time unless you also set TARGET. See
https://github.com/xianyi/OpenBLAS/issues/3056 For the macOS app, Marc Culler had to set TARGET=CORE2 so that it would run on a 2013 cylindrical Mac Pro (this version is not yet posted). Best, Nathan On Wednesday, August 25, 2021 at 10:15:02 PM William Stein wrote: > Hi, > > I release cocalc-docker ([1], [2]) a few days ago with sage-9.4, and had > people reporting back "illegal instruction" issues. Sage is built there > with SAGE_FAT_BINARY="yes", using this script [3]. One person who reported > a problem had a "Dell PowerEdge R710." and I built on an intel Dell > PowerEdge R630, for what it is worth. They got the error "An illegal > instructor occurred" when computing "5+2" in Sage. > > My solution for now is to keep cocalc-docker at sage-9.3 for the time > being, and suggest that people build sage from source on their own machine > if necessary. I'll let you know if I have any further information, but I > just wanted to add this data point. > > [1] https://github.com/sagemathinc/cocalc-docker > [2] https://hub.docker.com/r/sagemathinc/cocalc > [3] > https://github.com/sagemathinc/cocalc-docker/blob/master/scripts/install_sage.sh > > On Wednesday, August 25, 2021 at 8:57:44 AM UTC-7 Marco Streng wrote: > >> In the end I build 9.4 from source and that worked perfectly. And it >> turned out that the Ubuntu 18.04 binaries of 9.2 also work on this >> particular machine (though we went for 9.4 in the end). Thanks again for >> the help. >> >> Op dinsdag 24 augustus 2021 om 18:03:01 UTC+2 schreef slelievre: >> >>> 2021-08-24 05:48 UTC, Dima Pasechnik: >>> > >>> > These "illegal instruction" errors are an indication >>> > that the binary was built for a more advanced CPU >>> > than yours - which does not support certain CPU >>> > commands. It's a bug in "fat binary" build process >>> > we see for some time. >>> > >>> > Build Sage yourself, or use Conda. >>> >>> I opened a ticket at binary-pkg for that: >>> https://github.com/sagemath/binary-pkg/issues/31 >>> >> -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-support/62622bd6-6fcd-4b94-8fce-455517ad093an%40googlegroups.com.
