<div dir="ltr"><br><div class="gmail_extra"><br><br><div class="gmail_quote">On Mon, Sep 16, 2013 at 12:31 PM, David Cournapeau <span dir="ltr"><<a href="mailto:cournape@gmail.com" target="_blank">cournape@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><br><div class="gmail_extra"><br><br><div class="gmail_quote"><div class="im">On Mon, Sep 16, 2013 at 7:19 PM, Charles R Harris <span dir="ltr"><<a href="mailto:charlesr.harris@gmail.com" target="_blank">charlesr.harris@gmail.com</a>></span> wrote:<br>
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<div>On Mon, Sep 16, 2013 at 12:12 PM, David Cournapeau <span dir="ltr"><<a href="mailto:cournape@gmail.com" target="_blank">cournape@gmail.com</a>></span> wrote:<br>
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<div>On Mon, Sep 16, 2013 at 4:36 PM, Charles R Harris <span dir="ltr"><<a href="mailto:charlesr.harris@gmail.com" target="_blank">charlesr.harris@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">New summary<br><div><ol><li>32 bit windows, python 2.6, 2.7, 3.2, 3.3, compiled with MSVC</li>
<li>64 bit windows, python 2.6, 2.7, 3.2, 3.3, compiled with MSVC, linked with MKL</li>
</ol><p>These should be good for both windows 7 and window 8.<br>
</p><p></p></div></div></blockquote><div><br></div></div><div>Wait, when was it decided to move to MSVC for the official binaries ? Especially using ifort/MKL on windows means it will be difficult for other projects to produce packages on top of it.</div>
<div><br></div></div></div></div></blockquote><div><br></div></div><div>It hasn't been decided, this is just a modified version of the initial post. </div></div></div></div></blockquote><div><br></div></div><div>ok, sorry for the confusion</div>
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<div>Why not use MSVC? <a href="http://python.org" target="_blank">python.org</a> does. What is the problem with statically linked MKL? Do other packages need to link to lapack? The windows build problem has hung around for years. I'm tired of it. <br>
</div></div></div></div></blockquote><div><br></div></div><div>Which build problem ? Being tired of it does not justify a decision in particular, otherwise we fall into the fallacy "there is a problem, therefore we must do something". There are multiple issues:</div>
<div><br></div><div> - moving away from gcc 3.x on 32 bits. Those compilers are old, but it works well today. It is an untenable situation in the long term, though. I will look again at building numpy/scipy with mingw-w64 in 32 bits to see if the problems with -static-* are gone or not.</div>
<div><div> - 64 bits support: linked to first point. If the first point is solved, I am relatively confident this one can too.</div></div><div> - moving away from Atlas to MKL: this is much more problematic. First, MKL is *huge*. For info, the MKL package we provide @ Enthought is 70 MB zip compressed, and that's for the DLLs. The static version may be even bigger</div>
<div> - using ifort for fortran: by doing this, we impose on *every* package downstream to use ifort as well (same for MKL BTW).</div><div><br></div><div>There is also the issue of a blas/lapack for windows 64 bits. There the situation has changed a lot since I last looked into those issues: cygwin (required by atlas) now supports 64 bits natively, and openblas is relatively well supported. I would certainly be happy to get rid of ATLAS which is a PITA to maintain, and use openblas instead.</div>
<div><br></div></div></div></div></blockquote><div> </div><div>Openblas includes some of lapack and is available for x86_64 on windows.
It isn't clear what is included nor what compiler was used. <br><br></div><div>Chuck<br></div></div></div></div>