I just had the same problem with a new computer (Kaby Lake processor, apparently). Can we patch OpenBLAS to fall back to ATOM if it's x86_64 but can't detect the precise CPU? (I can't do this, but maybe someone else can.)
John On Friday, July 14, 2017 at 12:25:57 AM UTC-7, Dima Pasechnik wrote: > > Indeed, OPENBLAS_CONFIGURE="TARGET=ATOM" is a catch-all x86_64 processors > target. > Perhaps one can try the development version of openblas on these processors > (from https://github.com/xianyi/OpenBLAS) > > On Friday, July 14, 2017 at 12:29:12 AM UTC+1, Christopher Phoenix wrote: >> >> I'm building Sage 7.6 on my laptop, and there was an error making >> openblas that directed me to the log files for that package. The log file >> said that detecting CPU failed, and to set TARGET explicitly. It also >> suggested I email this google group to explain the problem, with the >> relevant part of the log files. So I've attached it below. >> >> OS: Ubuntu Mate 16.04 LTS >> Sage Version: 7.6 >> HW: Lenovo Thinkpad 11e, 500gb HD, 4 gb ram, Intel Celeron N2940 with 4 >> cpu cores >> >> Before the build, I made sure that I had all the listed dependencies and >> suggested packages already installed. Then I cloned the Git repo, set >> MAKE='make -j5 -4' and typed make. Make ran for about 45 min or more before >> it stopped and reported the error. I asked about this issue on sage-support >> earlier (https://groups.google.com/forum/#!topic/sage-support/NlRyew12xDQ >> ). >> >> Someone had the same issue on very similar hardware (another 11e) here: >> https://groups.google.com/d/msg/sage-devel/zQsZsivts0I/cblwvEkNDgAJ The >> log files look almost exactly the same. They reported that setting >> OPENBLAS_CONFIGURE="TARGET=ATOM" resolved this cpu detection issue, so I'm >> going to try setting this and building Sage again later today. I was a >> little confused since a Celeron is not an Atom afaik, I'm guessing this is >> a catch-all setting for lower-end processors? >> >> Any advice will be greatly appreciated! >> > -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at https://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
