See below. On Sunday, April 24, 2016 at 4:01:49 PM UTC+5:30, Milan Bouchet-Valat wrote: > > Le samedi 23 avril 2016 à 18:10 -0700, K leo a écrit : > > > Le samedi 23 avril 2016 à 04:52 -0700, K leo a écrit : > > > Anyway, > > > the Ubuntu PPA is no longer maintained. The recommended solution is > to > > > use generic Linux binaries from the Julia website. > > > > > > > On Ubuntu 16.04, Julia 0.4.5 is available on multiverse repository > > for some reason. Not sure who maintains it. > Ah, OK, I thought you were using the PPA package. Anyway, Ubuntu 16.04 > includes the latest OpenBLAS and the Julia package depends on it, so it > should be good. That said, maybe that OpenBLAS library doesn't use > threading. > > Can you confirm that running > x=rand(10000,10000); > x*x > does not make Julia use more than 100% CPU? >
It actually uses close to 200% of CPU. > > If not, could you post the output of versioninfo()? Finally, please run > 'ls -l /usr/lib/julia/', 'ls -l /usr/lib64/julia' from a shell and copy > the result. > julia> versioninfo() Julia Version 0.4.5 Commit 2ac304d (2016-03-18 00:58 UTC) Platform Info: System: Linux (x86_64-linux-gnu) CPU: Intel(R) Core(TM) i5-5257U CPU @ 2.70GHz WORD_SIZE: 64 BLAS: libopenblas (NO_LAPACKE DYNAMIC_ARCH NO_AFFINITY Haswell) LAPACK: libopenblas LIBM: libopenlibm LLVM: libLLVM-3.8 $ ls -l /usr/lib/julia/ ls: cannot access '/usr/lib/julia/': No such file or directory $ ls -l /usr/lib/x86_64-linux-gnu/julia total 26440 lrwxrwxrwx 1 root root 20 Apr 18 17:45 libarpack.so -> ../../libarpack.so.2 -rw-r--r-- 1 root root 15608 Apr 18 17:45 libccalltest.so lrwxrwxrwx 1 root root 22 Apr 18 17:45 libcholmod.so -> ../libcholmod.so.3.0.6 lrwxrwxrwx 1 root root 22 Apr 18 17:45 libdSFMT.so -> ../libdSFMT-19937.so.1 lrwxrwxrwx 1 root root 25 Apr 18 17:45 libfftw3f_threads.so -> ../libfftw3f_threads.so.3 lrwxrwxrwx 1 root root 24 Apr 18 17:45 libfftw3_threads.so -> ../libfftw3_threads.so.3 lrwxrwxrwx 1 root root 15 Apr 18 17:45 libgmp.so -> ../libgmp.so.10 -rw-r--r-- 1 root root 1175608 Apr 18 17:45 libjulia.so lrwxrwxrwx 1 root root 15 Apr 18 17:45 libmpfr.so -> ../libmpfr.so.4 lrwxrwxrwx 1 root root 22 Apr 18 17:45 libopenblas.so -> ../../libopenblas.so.0 lrwxrwxrwx 1 root root 19 Apr 18 17:45 libopenlibm.so -> ../libopenlibm.so.2 lrwxrwxrwx 1 root root 22 Apr 18 17:45 libopenspecfun.so -> ../libopenspecfun.so.1 lrwxrwxrwx 1 root root 18 Apr 18 17:45 libpcre2-8.so -> ../libpcre2-8.so.0 -rw-r--r-- 1 root root 203048 Apr 18 17:45 libRmath-julia.so lrwxrwxrwx 1 root root 19 Apr 18 17:45 libspqr.so -> ../libspqr.so.2.0.2 lrwxrwxrwx 1 root root 32 Apr 18 17:45 libsuitesparseconfig.so -> ../libsuitesparseconfig.so.4.4.6 -rw-r--r-- 1 root root 6000 Apr 18 17:45 libsuitesparse_wrapper.so lrwxrwxrwx 1 root root 22 Apr 18 17:45 libumfpack.so -> ../libumfpack.so.5.7.1 -rw-r--r-- 1 root root 25664120 Apr 18 17:45 sys.so $ ls -l /usr/lib64/julia ls: cannot access '/usr/lib64/julia': No such file or directory > I'm Ccing Graham Inggs, who maintains the Debian package on which the > Ubuntu package is based. > > > Regards >
