[SciPy-dev] Problems with building scipy

Nils Wagner nwagner at mecha.uni-stuttgart.de
Thu Dec 2 06:47:30 CST 2004


Pearu Peterson wrote:

>
>
> On Thu, 2 Dec 2004, Nils Wagner wrote:
>
>> Now there is only one "failure" in scipy.test() using FORTRAN 
>> LAPACK/BLAS.
>>
>> ======================================================================
>> FAIL: check_heev_complex 
>> (scipy.lib.lapack.test_lapack.test_flapack_complex)
>> ----------------------------------------------------------------------
>
>
> Fixed in CVS. This failure appeared when using Fortran BLAS.
>
>> Meanwhile, I have also test gcc3.3.4, gcc3.3.2 and gcc3.3.1 
>> (SuSE9.2/SuSE9.1 /SuSE9.0). Unfortunately, I got the same 
>> segmentation faults as mentioned earlier when using ATLAS 3.6 / 
>> 3.7.8. This fact is (at least from my point of view) very 
>> unsatisfactory.
>
>
> Comments:
> (i) Have you tried using ATLAS libraries from
>       http://www.scipy.org/download/atlasbinaries/linux/
>     ?


No, I did not.

> (ii) Always use ldd on flapack.so to check that system blas/lapack 
> libraries are not being used. 

I have removed the rpm's containing liblapack and libblas.
BTW, I found two different flapack.so on my system.

-rwxr-xr-x  1 root root 2342056 2004-12-02 12:59 
/usr/lib/python2.3/site-packages/scipy/lib/lapack/flapack.so
-rwxr-xr-x  1 root root 1979744 2004-12-02 13:01 
/usr/lib/python2.3/site-packages/scipy/linalg/flapack.so

Is that o.k. ?

cvs/scipy> ldd /usr/lib/python2.3/site-packages/scipy/linalg/flapack.so
        linux-gate.so.1 =>  (0xffffe000)
        libg2c.so.0 => /usr/lib/libg2c.so.0 (0x4028e000)
        libm.so.6 => /lib/tls/libm.so.6 (0x402ac000)
        libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x402ce000)
        libc.so.6 => /lib/tls/libc.so.6 (0x402d7000)
        /lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x80000000)
cvs/scipy> ldd /usr/lib/python2.3/site-packages/scipy/lib/lapack/flapack.so
        linux-gate.so.1 =>  (0xffffe000)
        libg2c.so.0 => /usr/lib/libg2c.so.0 (0x40305000)
        libm.so.6 => /lib/tls/libm.so.6 (0x40323000)
        libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x40345000)
        libc.so.6 => /lib/tls/libc.so.6 (0x4034e000)
        /lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x80000000)

Nils

> Also verify the linking command for flapack.so and the existence of .a 
> files used in -l.. and that -L..
> options are properly ordered so that correct .a files are picked up.
>
> Pearu
>
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