Will something built against 3.5.0 with SSE work on 3.5.1 without SSE? What about the inverse?
Sent from my iPhone > On Oct 11, 2015, at 10:17 AM, Steve Dower <steve.do...@python.org> wrote: > > An extra data point is that we've had exactly one report of Python 3.5 not > working due to lack of SSE, and that person was also on Windows XP (so zero > reports on supported platforms). > > That said, I should probably just fix 3.5.1 to not use SSE for core or > distutils builds. I doubt there was a huge performance increase due to it > (mainly in memcpy I'd assume). > > Cheers, > Steve > > Top-posted from my Windows Phone > From: Nathaniel Smith > Sent: 10/10/2015 16:11 > To: Laura Creighton > Cc: distutils-sig > Subject: Re: [Distutils] warning about potential problem for wheels > > On Oct 10, 2015 3:37 PM, "Laura Creighton" <l...@openend.se> wrote: > > > > In a message of Sat, 10 Oct 2015 21:52:58 -0000, Oscar Benjamin writes: > > > > >Really this is just a case of an unsupported platform. It's unfortunate > > >that CPython doesn't properly support this hardware but I think it's > > >reasonable that if you have to build your interpreter from source then you > > >have to build your extension modules as well. > > > > Alas that there is no easy way to detect. The situation I am > > imagining is where the administrators of a school build pythons for > > the students to run on their obsolete hardware, and then the poor > > students don't understand why pip doesn't work. But I suppose we > > will just get to deal with that problem when and if it happens. > > In case some numbers help: the numerical community has been tracking the > deployment of SSE2 to decide when to switch over for numpy/scipy builds, and > at this point what I hear is: > - ~0.5% of Firefox crashes are on machines that are missing SSE2 > - <0.1% of machines with Steam installed are missing SSE2 > > I'm not sure what python distributions like Anaconda or Activestate are doing > wrt SSE2, but even if their builds do require SSE2 then their build tooling > might provide a quick way to generate a whole installable environment with > custom build options for targeting older systems. (Continuum as of today > still hasn't released build scripts for the bottom of their stack -- > python/numpy/etc. -- but they've claimed willingness to do so and there's > increasing calls to make a "centos" version of Anaconda. And all the tooling > beyond that -- e.g. the actual package manager -- is FOSS.) > > -n > > _______________________________________________ > Distutils-SIG maillist - Distutils-SIG@python.org > https://mail.python.org/mailman/listinfo/distutils-sig
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