Dear PETSc-users, i'm trying to work with PETSc on a ccNuma-system, where i am confronted with severe performance problems. Is there anyone using PETSc on e.g. a SGI Altix System? Which are the best kernels to use on cache coherent systems? The fortran kernels produces many cache misses (in functions like fsolve and fmatmul) slowing down a 3GFLOP/s machine to about 200MFLOP/ s . Has anyone any advice to increase speed on ccNuma-system?
Sincerly, Christoph Statz -- Christoph Statz Institut f?r Nachrichtentechnik Technische Universit?t Dresden 01062 Dresden Email: christoph.statz at mailbox.tu-dresden.de Phone: +49 351 463 32287 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20081013/ba7c0fe0/attachment.htm> -------------- next part -------------- A non-text attachment was scrubbed... Name: PGP.sig Type: application/pgp-signature Size: 194 bytes Desc: This is a digitally signed message part URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20081013/ba7c0fe0/attachment.pgp>
