On Wed, Dec 20, 2017 at 02:48:42PM +0000, Dave Love wrote: > I wrote: > > > If you do provide some sort of threaded version for Python, then as far > > as I remember it must use pthreads, not OpenMP, though you want the > > OpenMP version for other purposes, and I hadn't realized there wasn't > > one currently. > > I was confused. I see the only version of the library shipped is built > with pthreads. I think there should be serial, pthreads, and OpenMP > versions, as for Fedora. It may also be useful to provide the 64-bit > integer versions, like Fedora; that's useful for at least a flagship > chemistry program.
I was just stating that the default openblas package does not perform well (it is single threaded, for one). If I compile for a target it makes a large difference. I don't know how we can make that available to others apart from having special packages like the one I made. Looks to me like python-numpy could benefit, but how we deploy that as a flavour - I have no idea. > I also remembered the problems with 0.2.20. I'll send a patch for the > wrong cache size used on some x86_64 when I get a chance. It is a stable release. So far no problems on my end using the latest git checkout of openblas. Pj. --
