On Mon, May 18, 2015 at 6:34 AM, Nathaniel Smith <[email protected]> wrote:
> On Sun, May 17, 2015 at 3:06 AM, Ralf Gommers <[email protected]> > wrote: > > There's the switch to OpenBLAS and building the right selection mechanism > > for which arch to use: > > http://article.gmane.org/gmane.comp.python.distutils.devel/20350. That > seems > > now feasible to complete on a reasonable time-scale, and the problems > with > > OpenBLAS seem to be mostly solved. Binaries which crash for ~1% of users > > (which ATLAS-SSE2 would result in) are still not acceptable I think. > > Where are you getting this SSE2 number from btw? This is info Matthew just collected from Firefox crash reports: https://github.com/scipy/scipy/issues/4829#issuecomment-100354752 The most detailed > public survey source for consumer hardware that I know is the Steam > hardware survey: > > http://store.steampowered.com/hwsurvey > > It's somewhat biased towards higher-end hardware b/c it targets > gamers, but there is plenty of less-high-end hardware on there as well > -- notice that 20% of the surveyed computers are using intel graphics. > And they're reporting that 99.92% of surveyed computers have SSE*3* > support, and 100.00% have SSE2. So assuming the significant digits are > accurate, this puts the upper bound on SSE2 failure on these systems > at ~0.05%. Even if gamers are 10x likelier to have new hardware then > the rest of the world, 1% still seems to be at least an order of > magnitude too high? > That would make life easier..... Ralf
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