On 01/12/2012 04:07 PM, Sylvestre Ledru wrote:
> Hello,
>
> Next time, please provide the information on the top if the bug report
>
Sorry, will do.
> Le jeudi 12 janvier 2012 à 15:57 +0100, Stefano Lattarini a écrit :
>> Programs linked with libatlas3gf-base unexpectedly die with an
>> "Illegal instruction" signal:
>>
>> $ cat > foo.c <<'END'
>> #include <atlas/cblas.h>
>> int main (void)
>> {
>> static double a[2*2];
>> static double b[2*2];
>> static double c[2*2];
>> double alpha = 1.0, beta = 0.0;
>> cblas_dgemm (CblasRowMajor, CblasNoTrans, CblasNoTrans, 2, 2, 2,
>> alpha, a, 2, b, 2, beta, c, 2);
>> return 0;
>> }
>> END
>> $ gcc -lcblas foo.c
>> $ ./a.out; echo status = $?
>> Illegal instruction
>> status = 132
>
> What is your CPU ?
> $ cat /proc/cpuinfo
>
processor : 0
vendor_id : AuthenticAMD
cpu family : 6
model : 6
model name : AMD Athlon(tm) XP 1800+
stepping : 2
cpu MHz : 1532.918
cache size : 256 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat
pse36 mmx fxsr sse syscall mmxext 3dnowext 3dnow up
bogomips : 3065.83
clflush size : 32
power management: ts
> Did you try with an optimized version of atlas?
>
No. Should I?
> (see its README.Debian file).
>
Thanks,
Stefano
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