Performance Issues on ccNuma-System

[Christoph Statz]

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 für Nachrichtentechnik
Technische Universität 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>