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Search took 0.00 seconds. Search: Posts Made By: LijieNPIC
Forum: OpenFOAM June 23, 2011, 05:10
Replies: 15
Views: 3,294
Posted By LijieNPIC
Thanks for your reply. I will have a try as what...

Thanks for your reply. I will have a try as what you say. And another question. When I finished the computation, how to get the average value? What is the time interval to sample the field?
Forum: OpenFOAM June 23, 2011, 05:05
Replies: 15
Views: 3,294
Posted By LijieNPIC
I am sorry for my fault. My mesh is 1.3 million,...

I am sorry for my fault. My mesh is 1.3 million, and per time step costs 8s. I use 24 cores ,because after 24cores, the computing time cost doesnot decrease with the increase of cores
Forum: OpenFOAM June 23, 2011, 01:19
Replies: 15
Views: 3,294
Posted By LijieNPIC
The mesh of my case is 130 million. Running 50000...

The mesh of my case is 130 million. Running 50000 timesteps, it costs almost a week. Too long time.
Forum: OpenFOAM June 23, 2011, 01:16
Replies: 15
Views: 3,294
Posted By LijieNPIC
The solver I use is dnsPisoFoam, which is origin...

The solver I use is dnsPisoFoam, which is origin from channelFoam. Now I use the local openmpi, because using the system openmpi does not help to improve scalability. I tried the following three...
Forum: OpenFOAM June 16, 2011, 04:59
Replies: 15
Views: 3,294
Posted By LijieNPIC
Hi, ywang. Can you post you code in the forum?...

Hi, ywang. Can you post you code in the forum? Now, I don't know whether my mpi works with infiniband? One friend suggests me that recompile OpenFOAM, and use system's openmpi rather than OF's. But...
Forum: OpenFOAM June 15, 2011, 01:52
Replies: 15
Views: 3,294
Posted By LijieNPIC
Hi, gregor. Somenone told me another method to...

Hi, gregor. Somenone told me another method to use infiniband. If it works, I will let you know
Forum: OpenFOAM June 11, 2011, 12:53
Replies: 15
Views: 3,294
Posted By LijieNPIC
Question OpenFOAM with Inifiband & parallel efficiency

Hi foamers,

I feel mad about my extremely slow parallel computing efficiency. I have modified channelFoam to perform DNS of pipe flow. The mesh is around 4 million. Each node has 8cores, but I...
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