MinGW libblas [WAS: Re: Octave 3.6.0 on Windows XP plot fails.]

[Philip Nienhuis]

Michael Goffioul wrote:
> On Fri, Feb 17, 2012 at 11:35 AM, Philip Nienhuis<address@hidden>  wrote:
> > This multi-architecture OpenBLAS works OK with MinGW-Octave-3.6.0 on both my
> > PCs:
> > - Core Duo 2.5 Ghz
> > - Pentium-M 1.1 Ghz
> > (both WinXP SP3)
> >
> > That is.... I haven't run any benchmarks, I just verified that the test:
> > > > > > > m=10000;
> > > > > > > n=32;
> > > > > > > temp=randn(m,n)+i*randn(m,n);
> > > > > > > b=temp'*temp;
> > runs without a crash.
>
> Try to run the full octave test suite. Hopefully that should cover
> enough cases. I tried OpenBLAS recently, compiled under MinGW
> (gcc-4.6.1) [1], and although a simple test like the one above didn't
> crash, more extensive testing still produced a crash.
>
> Michael.
>
> [1]: I compiled OpenBLAS fully with gcc then dropped the DLL to
> replace my existing one, then tested it with my octave compiled with
> MSVC. To make sure ABI are compatible, I compiled OpenBLAS with
> -mpreferred-stack-boundary=2 and -ff2c (for gfortran).


(Shouldn't we move this thread to the maintainers ML?)

By accident I hit a test that seems to be more scrutinous:

Simply do:

graphics_toolkit fltk
demo plotyy

Results (on Core Duo 2.5 Ghz, WinXP SP3):
-------
- All libblas.dll versions crash, except "refblas"
- Even the newest multi-arch version on Tatsuro's site crashes :-(

Philip