CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > OpenFOAM

OpenFOAM parallel run processor error

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Display Modes
Old   May 24, 2017, 14:51
Default OpenFOAM parallel run processor error
  #1
New Member
 
Oğuzhan Demir
Join Date: Dec 2016
Posts: 14
Rep Power: 2
ddemiroguzhan is on a distinguished road
Sponsored Links
Hi everyone,
I am trying to run a parallel simulation in OpenFOAM. When i choose 56 processors, i get the following error. When i use 28 processors, it works just fine. But for some reason, i can not use 56 processors for analysis.

''/***/***/***/***/system/decomposeParDict" specifies 56 processors but job was started with 28 processors.

Is there anyone who could help me with this problem?

Thx in advance.
Oguz
ddemiroguzhan is offline   Reply With Quote
Sponsored Links

Old   May 26, 2017, 12:28
Default
  #2
New Member
 
Collin Strassburger
Join Date: Feb 2017
Location: Oak Ridge, TN, USA
Posts: 10
Rep Power: 2
Collin is on a distinguished road
I have had issues like that when the mpi instance was not properly configured on the cluster. If you're running this through a scheduler, I suggest ensuring that the number of cores you're telling openfoam to use is identical to the number of cores requested from the scheduler. Furthermore, you may need to check if the cluster/scheduler can reliably do mpi runs across any number of nodes/cores.
Collin is offline   Reply With Quote

Old   May 26, 2017, 12:32
Default
  #3
New Member
 
Oğuzhan Demir
Join Date: Dec 2016
Posts: 14
Rep Power: 2
ddemiroguzhan is on a distinguished road
Hi Collin,

Thank you for the suggestion. As you have mentioned, I was running the simulation on a cluster. After re-installing the mpi, my problem has resolved and now i can run simulations properly.

Oguz
ddemiroguzhan is offline   Reply With Quote

Reply

Tags
decomposepar, error, openfoam, parallel

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
OpenFOAM v3.0+ ?? SBusch OpenFOAM 22 December 26, 2016 15:24
Questions about Paraview to show Parallel run of OpenFOAM padian OpenFOAM Post-Processing 14 May 8, 2016 10:55
unable to run in parallel with OpenFOAM 2.2 on CentOS einatlev OpenFOAM Running, Solving & CFD 9 June 26, 2014 00:24
Cannot get refineMesh to run in parallel smschnob OpenFOAM Meshing & Mesh Conversion 2 June 3, 2014 11:20
Parallel run of OpenFOAM in linux and windows side by side m2montazari OpenFOAM Running, Solving & CFD 5 June 24, 2011 03:26

Sponsored Links


All times are GMT -4. The time now is 22:22.