[Numpy-discussion] Scipy 0.15.0 beta 1 release

Julian Taylor jtaylor.debian at googlemail.com
Wed Nov 26 04:06:50 EST 2014


On 11/26/2014 12:50 AM, Andrea Gavana wrote:
> 
> On 25 November 2014 at 19:33, David Cournapeau <cournape at gmail.com
> <mailto:cournape at gmail.com>> wrote:
> 
> 
> 
>     On Tue, Nov 25, 2014 at 6:10 PM, Sturla Molden
>     <sturla.molden at gmail.com <mailto:sturla.molden at gmail.com>> wrote:
> 
>         David Cournapeau <cournape at gmail.com
>         <mailto:cournape at gmail.com>> wrote:
>         > Shall we consider <a
>         > href="https://github.com/scipy/scipy/issues/4168">https://github.com/scipy/scipy/issues/4168</a>
>         > to be a
>         > blocker (the issue arises on scipy master as well as 0.14.1) ?
>         >
> 
>         It is really bad, but does anyone know what is really going on?
> 
> 
>     Yes, it is in the bug report.
> 
> 
> 
> Nice move.
> 
> I've now recommended to hold back any upgrade/update/pip-crap/enpkg-fun
> thing on NumPy/SciPy across the whole user base of Python in the
> company. We will probably move to 64bit-in-any-sense soon enough, I
> guess before this issue is solved. Tell me, NumPy, was the array aligned
> enough in 1.8? Is NumPy stricter in its checking because of SPARC? SPARC?!? 

yes, before the change numpy accepted a factor 10 performance regression
in complex indexing to satisfy sparc.

> 
> Dozens of f2py compiled extensions are going to fail soon here - which
> I'll reluctantly check tomorrow. I don't want to think about other
> people on Win32 facing the same issue elsewhere... :-)
> 

There haven't been any real complaints from applications yet, only
testsuite failure of scipy.
Either the one thing that is broken in scipy isn't much used or windows
32 users aren't using 1.9 yet.
The majority of f2py should still be working, numpys own f2py testsuite
passes on win32. I still don't know what exactly arpack is doing
different but I also did not have time yet to look at the testcase david
created.

It should of course be fixed, I have an old branch with aligned
allocators lying around somewhere which should fix the issue or at least
give users a way to work around it.



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