On Tue, Apr 29, 2014 at 1:10 AM, Julian Taylor <jtaylor.deb...@googlemail.com> wrote: > On 29.04.2014 02:05, Matthew Brett wrote: >> Hi, >> >> On Mon, Apr 28, 2014 at 4:30 PM, Nathaniel Smith <n...@pobox.com> wrote: >>> It would be really interesting if someone were to try hacking simple >>> runtime CPU detection into BLIS and see how far you could get -- right >>> now they do kernel selection via the C preprocessor, but hacking in >>> some function pointer thing instead would not be that hard I think. A >>> maintainable library that builds on Linux/OSX/Windows, gets >>> competitive performance on last-but-one generation x86-64 CPUs, and >>> gets better-than-reference-BLAS performance everywhere else, would be >>> a very very compelling product that I bet would quickly attract the >>> necessary attention to make it competitive on all CPUs. >> >> I wonder - is there anyone who might be able to do this work, if we >> found funding for a couple of months to do it? > > On scipy-dev a interesting BLIS related message was posted recently: > http://mail.scipy.org/pipermail/scipy-dev/2014-April/019790.html > http://www.cs.utexas.edu/~flame/web/ > > It seems some work of integrating BLIS into a proper BLAS/LAPACK library > is already done.
BLIS itself ships with a BLAS-compatible interface, that you can use with reference LAPACK (just like OpenBLAS). I wouldn't be surprised if there are various annoying Fortran/C ABI hacks remaining to be worked out, but at least in principle BLIS is a BLAS. The problem is that this BLAS has no threading, runtime configuration (you have to edit a config file and recompile to change CPU support), or windows build goop. Basically the authors seem to still be thinking of a BLAS library's target audience as being supercomputer sysadmins, not naive end-users. -n -- Nathaniel J. Smith Postdoctoral researcher - Informatics - University of Edinburgh http://vorpus.org _______________________________________________ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion
