I'm also seeing illegal instruction in Sage 9.3 and 9.4 (and not in 9.2) while doing some linear algebra, although I'm not sure if it's the same bug or not. In either case, my bugreport is submitted to https://trac.sagemath.org/ticket/32447
Regards, Max On Thursday, August 26, 2021 at 2:38:10 PM UTC-4 Nathan Dunfield wrote: > 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/645619ca-53e5-43be-93d6-8b82106210b3n%40googlegroups.com.
