[Pkg-octave-devel] Bug#613070: octave3.2: Error in big matrix multiplication

[José Luis García Pallero]

El lunes, 6 de agosto de 2012, Thomas Weber <tweber at debian.org> escribió:
> Hi,
> On Sat, Feb 12, 2011 at 08:40:15PM +0100, José Luis García Pallero wrote:
>> Hello,
>> I think the problem is not in octave but is in ATLAS. The simple program:
>>
>> #include<cblas.h>
>> #define N 52
>> int main()
>> {
>>     double A[N*N],B[N*N],C[N*N];
>>
cblas_dgemm(CblasColMajor,CblasNoTrans,CblasNoTrans,N,N,N,1.0,A,N,B,N,1.0,C,N);
>>     return 0;
>> }
>>
>> shows the error: with #define N 51 or less it rins OK, but with
>> #define N 52 or more the program crash with the message "Illegal
>> instruction". The version of ATLAS is 3.8.2-29 and in Debian GNU/Linux
>> runs without problems but in kFreeBSD crashes
>
> I think this bug has been fixed with the newer versions of Atlas we have
> in unstable and testing. José, can you test this on your system? Please

Ups, I remove mu Debian kFreeBSD some time ago :'(

> note that you have to manually switch the LAPACK library on your system
> to Atlas as described in /usr/share/doc/libatlas3-base/README.Debian.
>
> Thanks
>         Thomas
>

-- 
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José Luis García Pallero
jgpallero at gmail.com
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Use Debian GNU/Linux and enjoy!
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