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Forum: OpenFOAM Running, Solving & CFD

August 30, 2005, 14:30

Replies: 16

Parallel performance

Views: 1,953

Posted By hsing

Thanks for all of you guys' i

Thanks for all of you guys' idea about the parallel performance.

Now I have a question about the CPU time. The CPU time provided by the function of elapsedCpuTime() counts only the main node's...

Forum: OpenFOAM Running, Solving & CFD

August 24, 2005, 15:25

Replies: 16

Parallel performance

Views: 1,953

Posted By hsing

I have run the code in two CPU

I have run the code in two CPU but with two different node. Now, the efficiency seems to be higher than 100%!!!. That means the bottleneck is the bus speed in my cluster and I'd better to upgrad the...

Forum: OpenFOAM Running, Solving & CFD

August 22, 2005, 15:52

Replies: 16

Parallel performance

Views: 1,953

Posted By hsing

Thanks Henry, I will try. And

Thanks Henry,
I will try. And there is a type erro in my previous post, the interconnection is 1G bite.

Forum: OpenFOAM Running, Solving & CFD

August 22, 2005, 15:37

Replies: 16

Parallel performance

Views: 1,953

Posted By hsing

Every node of my cluster is du

Every node of my cluster is dual CPU system. So for the two CPU mode is actually running inside a node. And the interconnection between the mahcine node is 1 G byte.

Forum: OpenFOAM Running, Solving & CFD

August 22, 2005, 14:11

Replies: 16

Parallel performance

Views: 1,953

Posted By hsing

The size of the case is quite

The size of the case is quite huge, there are
262392 cells in the computation domain.

I have no idea of editing the file of
.OpenFoam-1.1/controlDict. Actually, I do not change it at all....

Forum: OpenFOAM Running, Solving & CFD

August 22, 2005, 13:50

Replies: 16

Parallel performance

Views: 1,953

Posted By hsing

Hi, I just test the parallel p

Hi, I just test the parallel performance of the solver, icoFoam, on a cluster. For single cpu mode, it takes about 31 hours while the 2 cpu mode takes 26 hours. So, the efficency is around 60%. Is it...

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