On Wed, Oct 14, 2015 at 5:38 PM, Nathaniel Smith <n...@pobox.com> wrote:
> On Oct 14, 2015 9:15 AM, "Chris Barker" <chris.bar...@noaa.gov> wrote: > > > > On Mon, Oct 12, 2015 at 9:27 AM, Charles R Harris < > charlesr.har...@gmail.com> wrote: > >> > >> * Compiling with msvc9 or msvc10 for 32 bit Windows now requires SSE2. > >> This was the easiest fix for what looked to be some miscompiled code > when > >> SSE2 was not used. > > > > > > Note that there is discusion right now on pyton-dev about requireing > SSE2 for teh python.org build of python3.5 -- it does now, so it's fine > for third party pacakges to also require it. But there is some talk of > removing that requirement -- still a lot of old machines around, I guess -- > particular at schools and the like. > > Note that the 1.10.1 release announcement is somewhat misleading -- > apparently the affected builds have actually required SSE2 since numpy 1.8, > and the change here just makes it even more required. I'm not sure if this > is all 32 bit builds or only ones using msvc that have been needing SSE2 > all along. The change in 1.10.1 only affects msvc, which is not what most > people are using (IIUC Enthought Canopy uses msvc, but the pypi, gohlke, > and Anaconda builds don't). > > I'm actually not sure if anyone even uses the 32 bit builds at all :-) > I cannot divulge exact figures for downloads, but for us at Enthought, windows 32 bits is in the same ballpark as OS X and Linux (64 bits) in terms of proportion, windows 64 bits being significantly more popular. Linux 32 bits and OS X 32 bits have been in the 1 % range each of our downloads for a while (we recently stopped support for both). David > > Ideally, any binary wheels on PyPi should be compatible with the > python.org builds -- so not require SSE2, if the python.org builds don't. > > > > Though we had this discussion a while back -- and numpy could, and maybe > should require more -- did we ever figure out a way to get a meaningful > message to the user if they try to run an SSE2 build on a machine without > SSE2? > > It's not that difficult in principle, just someone has to do it :-). > > -n > > _______________________________________________ > NumPy-Discussion mailing list > NumPy-Discussion@scipy.org > https://mail.scipy.org/mailman/listinfo/numpy-discussion > >
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