On Sun, Oct 9, 2016 at 2:19 PM, Pjotr Prins <pjotr.publi...@thebird.nl> wrote: > On Sat, Oct 08, 2016 at 10:13:39PM +0200, Federico Beffa wrote: >> Hi, >> >> I'm wondering why our OpenBLAS package is built with the flag >> "NO_LAPACK=1". It is my understanding that with this optional flag >> OpenBLAS doesn't include LAPACK, while without this flag and by >> default it does include the LAPACK functions. In the latter case >> OpenBLAS could be used by a larger number of packages which do require >> LAPACK functions. >> >> https://github.com/xianyi/OpenBLAS/issues/203 > > NO_LAPACK=0 does not use external libs. NO_LAPACK=1 uses external > liblapack. They both cover LAPACK functionality. > > NO_LAPACK=1 is the conservative choice - it still is what most > software has been developed against today. > > OpenBLAS has merged LAPACK code and they have been changing things, > claiming their version is better performing. But since it is less well > tested, new bugs are quite possible. I have hit at least one OpenBLAS > bug, so far.
Thanks for the info. OpenBLAS is now around since several years and has gained in popularity. I'm sure that any bug report will be addressed timely. In any case, I find that with "NO_LAPACK=1" hmatrix can't use it http://hackage.haskell.org/package/hmatrix > > Personally I think we should have both options in Guix, but we should > probably keep defaulting to NO_LAPACK=1. For the moment I will use LAPACK. If your proposal will happen I will switch. Thanks for the reply, Fede
