Desire NUENTSA WAKAM wrote: > On a multicore node, you may not get a very good speedup if the > bandwidth is heavily shared between all the cores. I guess this is what > Petsc people have explained here > http://www.mcs.anl.gov/petsc/petsc-as/documentation/faq.html#computers > If you have a multi-socket multicore node, my guess would be to keep one > MPI process on each socket and then to use a multithreaded BLAS (like > Goto) inside each socket to keep the cores busy during BLAS operations. > Hope this helps
It was very helpful. Merci infiniment. Scott Ormiston -------------- next part -------------- A non-text attachment was scrubbed... Name: SJ_Ormiston.vcf Type: text/x-vcard Size: 321 bytes Desc: not available URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20110401/6eba68bd/attachment.vcf>
