On Mon, Sep 2, 2013 at 5:46 PM, Pauli Virtanen <pav@iki.fi> wrote:

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Hi,

02.09.2013 18:30, David Cournapeau kirjoitti:
[clip]

> Ok, I think the commit 5935030f8cced33e433804a21bdb15572d1d38e8 is
> quite wrong.
>
> It conflates the issue of dealing with Accelerate brokenness and
> using g77 ABI. I would suggest reverting it for 0.13.0 (and
> re-disable single precision), as fixing this correctly may require
> quite some time/testing.

I'm -1 on returning to the previous situation where many routines on
OSX are simply broken (which was the situation previously ---
"disabling single precision" left several things still broken). I'd
rather just postpone the 0.13.0 release until this issue is solved
properly.

I see, I missed that it was more than just reverting to slower versions.

Can you say what exactly is wrong -- as far as I know, Accelerate on
OSX simply uses g77 ABI. There were some bugs previously where it in
places did things differently, but on recent OSX releases this is no
longer the case?

I guess you are trying to link with MKL? In that case, I would rather
propose restoring the previous MKL wrappers (with trivial extensions
for the missing w* symbols).

The pb is specific to MKL, yes, but I've found a workaround: in the case of MKL, you just need to workaround the g77 ABI of the MKL vs gfortran ABI, but the LAPACK interface is the actual LAPACK, not CLAPACK.

So for MKL, you need non dummy wrappers iff the function returns a complex. A dirty patch seems to confirm that this fixes the issue, I will prepare an actual patch tomorrow,

David

- --
Pauli Virtanen
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