looking for instructions on using a cluster and running openFoam in parallel

a.Asadi · December 13, 2015, 12:05

Hi everyone.

I am not sure that I am asking in right forum but I really need your help.

I am running a case in openFoam but my computer CPU power is not sufficient enough and it needs one or two month to converge. this time is unusual.

someone offered me to use Ubuntu cluster to connect some computers to each other and run the case with using all of theirs CPU like a super computer. but he was not familiar with openFoam.

now I ask you to guide me that I can do this or not ? if it is possible please let me know how can I do that or at least give me a reference about that.

thanks for your attention.
a.Asadi

Mojtaba.a · December 13, 2015, 13:28

Well Actually This is not such a simple task.
There are some threads here in this forum dealing with this issue:

http://www.cfd-online.com/Forums/ope...m-cluster.html
http://www.cfd-online.com/Forums/ope...4-lts-x64.html

And here is a blog post by Bruno:
http://www.cfd-online.com/Forums/blo...-parallel.html

You may have to setup openMPI.

Best.

a.Asadi · December 14, 2015, 04:32

Hi Mojtaba. thanks for your quick reply.

I think I asked my question before searching enough in the internet.

from yesterday I am studying about Ubuntu cluster and learned It is not as easy as I thought. first I must install an MPI program.

Is it important to use openMPI or I can use MPICH instead ?

akidess · December 14, 2015, 04:38

http://www.cfd-online.com/Forums/ope...ng-mpich2.html

December 13, 2015, 12:05	looking for instructions on using a cluster and running openFoam in parallel	#1
a.Asadi New Member Amir Join Date: Jul 2015 Posts: 11 Rep Power: 11	Hi everyone. I am not sure that I am asking in right forum but I really need your help. I am running a case in openFoam but my computer CPU power is not sufficient enough and it needs one or two month to converge. this time is unusual. someone offered me to use Ubuntu cluster to connect some computers to each other and run the case with using all of theirs CPU like a super computer. but he was not familiar with openFoam. now I ask you to guide me that I can do this or not ? if it is possible please let me know how can I do that or at least give me a reference about that. thanks for your attention. a.Asadi

December 13, 2015, 13:28		#2
Mojtaba.a Senior Member Mojtaba Amiraslanpour Join Date: Jun 2011 Location: Tampa, US Posts: 308 Rep Power: 16	Well Actually This is not such a simple task. There are some threads here in this forum dealing with this issue: http://www.cfd-online.com/Forums/ope...m-cluster.html http://www.cfd-online.com/Forums/ope...4-lts-x64.html And here is a blog post by Bruno: http://www.cfd-online.com/Forums/blo...-parallel.html You may have to setup openMPI. Best. __________________ Learn OpenFOAM in Persian SFO (StarCCM+ FLUENT OpenFOAM) Project Team Member Complex Heat & Flow Simulation Research Group If you can't explain it simply, you don't understand it well enough. "Richard Feynman"

December 14, 2015, 04:38		#4
akidess Senior Member Anton Kidess Join Date: May 2009 Location: Germany Posts: 1,377 Rep Power: 30	http://www.cfd-online.com/Forums/ope...ng-mpich2.html __________________ On twitter @akidTwit Spend as much time formulating your questions as you expect people to spend on their answer.

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December 14, 2015, 04:32		#3
a.Asadi New Member Amir Join Date: Jul 2015 Posts: 11 Rep Power: 11	Hi Mojtaba. thanks for your quick reply. I think I asked my question before searching enough in the internet. from yesterday I am studying about Ubuntu cluster and learned It is not as easy as I thought. first I must install an MPI program. Is it important to use openMPI or I can use MPICH instead ?