On Tue, Jul 8, 2008 at 3:05 PM, Tiziano Zito <[EMAIL PROTECTED]> wrote: > Hi Ondrej, > >> $ ./test_atlas.py >> Using ATLAS: >> 0.53141283989 >> $ wajig remove atlas3-base libatlas3gf-base >> $ ./test_atlas.py >> Using ATLAS: >> 1.64572000504 >> >> So it seems to work, even though the difference is not so big. > > the difference is not so big because the package contains a > _dotblas.so file. When you remove the ATLAS libs, it simply uses the > available lapack+blas routines, which are slower then ATLAS but > still not so bad. If you build the package without the patch and > without using ATLAS, not _dotblas.so file is present, and the slow > down is much higher: > > $ aptitude search ~i~natlas > i libatlas3gf-sse2 - Automatically Tuned Linear Algebra > Softwar > $ ldd /usr/lib/python2.5/site-packages/numpy/core/_dotblas.so > linux-gate.so.1 => (0xffffe000) > libblas.so.3gf => /usr/lib/sse2/atlas/libblas.so.3gf (0xb79b6000) > libgfortran.so.3 => /usr/lib/libgfortran.so.3 (0xb7904000) > libm.so.6 => /lib/i686/cmov/libm.so.6 (0xb78dd000) > libgcc_s.so.1 => /lib/libgcc_s.so.1 (0xb78d0000) > libc.so.6 => /lib/i686/cmov/libc.so.6 (0xb7775000) > /lib/ld-linux.so.2 (0x80000000) > $ python test_atlas.py > Using ATLAS: > 0.539413928986 > $ aptitude purge libatlas3gf-sse2 > $ python test_atlas.py > Using ATLAS: > 1.90855002403 > $ ldd /usr/lib/python2.5/site-packages/numpy/core/_dotblas.so > linux-gate.so.1 => (0xffffe000) > libblas.so.3gf => /usr/lib/libblas.so.3gf (0xb7f60000) > libgfortran.so.3 => /usr/lib/libgfortran.so.3 (0xb7eae000) > libm.so.6 => /lib/i686/cmov/libm.so.6 (0xb7e87000) > libgcc_s.so.1 => /lib/libgcc_s.so.1 (0xb7e7a000) > libc.so.6 => /lib/i686/cmov/libc.so.6 (0xb7d1f000) > /lib/ld-linux.so.2 (0x80000000) > $ mv /usr/lib/python2.5/site-packages/numpy/core/_dotblas.so > /usr/lib/python2.5/site-packages/numpy/core/_dotblas.so.bak > $ python test_atlas.py > No ATLAS: > 7.52080416679
Ah, I see. Thanks for the clarification. If you could join DPMT and maintain the package with us, it'd be great. Anyway I finished my tests on i386 and I think all is ok. So I just uploaded the fixed package. Let's see if all is fine now. Ondrej -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
