icoLagrangianFoam parallelizatrion problem

shchepan · July 27, 2009, 05:57

Dear all,
I work with icoLagrangianFoam solver on a cluster. It works good on one processor, but it doesn't work on 8 processors.
At some time step it can't move particles. I don't receive any error, solver stil works but without any result.

Do you know this problem?

Edison_Ge · July 27, 2009, 22:02

I'm testing it with 4 processors and get the same problem. Hope some one can try to give and explanation.
Thanks so much.

gschaider · July 28, 2009, 09:30

Quote:

Originally Posted by shchepan

Dear all,
I work with icoLagrangianFoam solver on a cluster. It works good on one processor, but it doesn't work on 8 processors.
At some time step it can't move particles. I don't receive any error, solver stil works but without any result.

Do you know this problem?

Quote:

Originally Posted by Edison_Ge

I'm testing it with 4 processors and get the same problem. Hope some one can try to give and explanation.
Thanks so much.

Could you be a bit more specific?
- which OF-version are you working with
- where did you get the icoLagranian-sources from (The one from the OF-extend-svn should be the more recent)
- does this happen with the minimal parallel setup (==2 CPUs) too
- is the problem reproducible with one of the two example-cases

Bernhard

shchepan · July 28, 2009, 09:48

Bernhard,
thank you very much for answer.
I should say at first, I'm new openFOAM user.

- I use openFoam-1.5
- I got icoLagrangianFoam from https://openfoam-extend.svn.sourceforge.net/svnroot/openfoam-extend/trunk/Breeder_1.5/solvers/other/IcoLagrangianFoam/
- yes, this happens with 2 CPUs too
- I worked with one of examples (it was cavityLagrange)

July 27, 2009, 05:57	icoLagrangianFoam parallelizatrion problem	#1
shchepan Member Mihails Ščepanskis Join Date: Jul 2009 Posts: 36 Rep Power: 17	Dear all, I work with icoLagrangianFoam solver on a cluster. It works good on one processor, but it doesn't work on 8 processors. At some time step it can't move particles. I don't receive any error, solver stil works but without any result. Do you know this problem?

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July 27, 2009, 22:02		#2
Edison_Ge Member edison Join Date: May 2009 Location: Australia Posts: 35 Rep Power: 17	I'm testing it with 4 processors and get the same problem. Hope some one can try to give and explanation. Thanks so much.

July 28, 2009, 09:48		#4
shchepan Member Mihails Ščepanskis Join Date: Jul 2009 Posts: 36 Rep Power: 17	Bernhard, thank you very much for answer. I should say at first, I'm new openFOAM user. - I use openFoam-1.5 - I got icoLagrangianFoam from https://openfoam-extend.svn.sourceforge.net/svnroot/openfoam-extend/trunk/Breeder_1.5/solvers/other/IcoLagrangianFoam/ - yes, this happens with 2 CPUs too - I worked with one of examples (it was cavityLagrange)