Re: [Gretl-users] OpenBLAS warning

Thank you, Anyway, I have a libblas suit with .dev and it was only libopenblas-base. Rather, it had come with the system.  OpenMP support is "yes" Oleh 31 грудня 2015, 16:43:24, від "Allin Cottrell" < cottrell(a)wfu.edu >: On Thu, 31 Dec 2015, oleg_komashko(a)ukr.net wrote: That's because we were ignoring the potential problem of OpenBLAS running pthreads under OpenMP. Now we're not ignoring it any more. As Jack has said, we don't have firm evidence that this is a practical problem. If it were, the most likely symptom would be a hang in OpenBLAS. At one point lately we were worried that mixing the two methods was leading to a crash, but that turned out not to be the case -- the crash had a different cause, namely an unrelated bug in OpenBLAS, against which gretl now has a work-around. See https://github.com/xianyi/OpenBLAS/issues/723 The basic point, however, is that the interaction of OpenMP and pthreads is undefined. The OpenBLAS library can be built to use OpenMP instead of pthreads, via the flag "USE_OPENMP = 1" in Makefile.rule. Some Linux distros (e.g. Fedora) offer pre-built OpenBLAS in both "flavours": pthreads or OpenMP. Allin _______________________________________________ Gretl-users mailing list Gretl-users(a)lists.wfu.edu http://lists.wfu.edu/mailman/listinfo/gretl-users