In gmane.comp.mathematics.sage.devel, you wrote:
> On 3/6/12 4:30 AM, Dima Pasechnik wrote:
>> OK, guys, bad news, we will have to build Altlas on Lion!
>> Or wait for Apple to fix their blas...
>> I checked the attached C code on sqrt5, both with gcc and with cc (i.e.
>> clang), and it's all
>> confirmed.
>
>
> Wow.  Just wow.  So should we not trust matlab or mathematica on Lion 
> either?

you can't trust Apple's lapack/blas on OSX 10.6 either.
Here is a short Fortran code calling blas, which crashes on 10.6 and
10.7

http://trac.sagemath.org/sage_trac/ticket/12011#comment:31

And this has been known by Apple for years, apparently...
Have they all but abandoned anything to do with high-performance
computing?

>
> For completeness, what are your test_blas/cblas programs?  What 
> operations are the three y vectors supposed to represent?

http://boxen.math.washington.edu/home/dima/patches/OSX7blas_bug.tgz

that's vector arithmetic, with one operand having all the same entries.

Dima

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