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Search: Posts Made By: skabilan
Forum: OpenFOAM Running, Solving & CFD October 11, 2011, 14:02
Replies: 19
Views: 3,091
Posted By skabilan
Anton, You are correct! I need to rephrase...

Anton,

You are correct! I need to rephrase my wordings. I meant we cannot get linear speedup with OpenFoam utilities (at least the ones I have used). We will run into the interpolation issues if...
Forum: OpenFOAM Running, Solving & CFD October 10, 2011, 14:10
Replies: 19
Views: 3,091
Posted By skabilan
Hi, Which version of OpenFOAM are you using?

Hi,

Which version of OpenFOAM are you using?
Forum: OpenFOAM Running, Solving & CFD October 3, 2011, 14:04
Replies: 19
Views: 3,091
Posted By skabilan
Hi, First, it is impossible to get linear...

Hi,

First, it is impossible to get linear speedup with any code. That said, icoFoam, performed relatively good on multiple processors. When you increase the number of processors, each processor...
Forum: OpenFOAM Running, Solving & CFD October 3, 2011, 01:09
Replies: 19
Views: 3,091
Posted By skabilan
Hi All, This issue has been resolved! The...

Hi All,

This issue has been resolved! The key to this problem was changing nCellsInCoarsestLevel in GAMG setting.

Thanks
Senthil
Forum: OpenFOAM Running, Solving & CFD August 13, 2008, 18:45
Replies: 19
Views: 3,091
Posted By skabilan
Hi All, I have tried variou

Hi All,

I have tried various permutations and combinations for the pressure solver but I could not attain any speed up. Any Suggestions?

Thanks
Senthil
Forum: OpenFOAM Running, Solving & CFD July 25, 2008, 19:17
Replies: 19
Views: 3,091
Posted By skabilan
Hi All, When I increase the

Hi All,

When I increase the number of processors, the solver stalls while calculating the pressure equation. I think it is the problem with GAMG. Any suggestions changing the following...
Forum: OpenFOAM Running, Solving & CFD July 24, 2008, 16:42
Replies: 19
Views: 3,091
Posted By skabilan
Hi Francesco, The same mach

Hi Francesco,

The same machine did demonstrate excellent speed up in case of a steady state simulation with simpleFoam. I got good speed up with 64 processors.

Senthil
Forum: OpenFOAM Running, Solving & CFD July 24, 2008, 13:44
Replies: 19
Views: 3,091
Posted By skabilan
Hi Eugene, Its Altix from S

Hi Eugene,

Its Altix from SGI (http://www.sgi.com/products/servers/altix/)

The system runs a single copy of Linux over 128 Intel Itanium2 processors running at 1.5GHz. The system has 256GB...
Forum: OpenFOAM Running, Solving & CFD July 24, 2008, 13:05
Replies: 19
Views: 3,091
Posted By skabilan
Hi Hrv, Thanks for the help

Hi Hrv,

Thanks for the help! Ill try your suggestions and keep the forum posted.

Bernhard: The mesh has 2.7 million elements (hybrid). Its a shared memory machine.

Regards,
Senthil
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