On 09/07/10 at 11:16 +0200, Sylvestre Ledru wrote: > Hello Ryo, > > > > I have been able to link my program with threaded ATLAS successfully as: > > > > $ gcc test.c -L/usr/lib/atlas-corei7sse3 -lptf77blas -latlas -lgfortran > > > > However, I cannot get any speed gain on our 8-core with hyperthreading > > machine. > Yes, and I guess my answer will disappoint you. > To allow your 8 cores to be used, you must rebuild Atlas (fakeroot > debian/rules custom). > > Unlike the MKL, the number of thread is static: > http://math-atlas.sourceforge.net/faq.html#tnum
Couldn't we build it for, say, 16 cores and get away with it? Are there performance implications with building it for too many cores? Lucas -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
