this is most probably https://trac.sagemath.org/ticket/32424
On Wed, 1 Sep 2021, 22:30 Max Alekseyev, <max...@gmail.com> wrote: > 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 > <https://groups.google.com/d/msgid/sage-support/645619ca-53e5-43be-93d6-8b82106210b3n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- 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/CAAWYfq0W_3ymJ920Us_bJtsFm-%3DW9nwQ6Q9pR7u-T1zxz3-x-g%40mail.gmail.com.
