[petsc-users] KSP_SpeedUP

Lisandro Dalcin dalcinl at gmail.com
Wed Apr 14 19:05:22 CDT 2010

On 14 April 2010 19:07, Pedro Torres <torres.pedrozpk at gmail.com> wrote:
> Thanks, for a quickly reply. I have four nodes (GigaEthernet), each node
> with two Quad Core E5410 at 2.33GHz, Mem 16Gb - DDR2 667Mhz., and definitely
> I'm not have the enough memory bandwidth for a reasonable speedup.

Smart process to core binding may help you (mpiexec.hydra -n 4/8
--binding topo:sockets), Open MPI has equivalent functionality


Lisandro Dalcin
Predio CONICET-Santa Fe
Colectora RN 168 Km 472, Paraje El Pozo
Tel: +54-342-4511594 (ext 1011)
Tel/Fax: +54-342-4511169

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