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Forum: Siemens

April 21, 2009, 07:58

Replies: 7

star 4.06 memory on linux cluster

Views: 3,334

Posted By johnmck

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I ran some more tests (mesh 96x99x96=912384 cells), and yes we are reaching a tradeoff:

Nodes x processes per node
1x1=1 (ie serial) uses 1870Mb/process
1x2=2 uses 1340
1x4=4 uses 1060...

Forum: Siemens

April 20, 2009, 15:17

Replies: 7

star 4.06 memory on linux cluster

Views: 3,334

Posted By johnmck

yes a tradeoff - but not yet?

Yes, I'd agree that eventually there is a trade off, when using more nodes adds a greater communications overhead then the computational benefit they bring.

But I didnt think I'd reached that...

Forum: Siemens

April 20, 2009, 11:27

Replies: 7

star 4.06 memory on linux cluster

Views: 3,334

Posted By johnmck

star 4.06 memory on linux cluster

I'm trying to run Star 4.06 on a linux cluster with pbs, on 900,000 cells modelling incompressible transient flow. Each node of the cluster has two processors with 4 cores, and 8GB of shared memory....

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