CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Running, Solving & CFD

Parallel run diverges, serial does not

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

Like Tree2Likes
  • 2 Post By fra76

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   May 8, 2009, 11:50
Default Parallel run diverges, serial does not
  #1
New Member
 
Samuel Braun
Join Date: Mar 2009
Posts: 1
Rep Power: 0
SammyB is on a distinguished road
Hi,
I have a case which runs fine in parallel with OpenMpi and serial without turbulence model. Unfortunately, the parallel run with turbulence model on (e.g. kE->LaunderGibsonRSTM) segfaults after few iterations.
Whereas the serial run seems to converge (still running).

Could this be a problem of the used preconditioner (p: GAMG, others: DILU)?
Could someone, please, point me to a possible solution?

Thanks and have a nice weekend.
Samuel
SammyB is offline   Reply With Quote

Old   May 10, 2009, 04:28
Default
  #2
Senior Member
 
Francesco Del Citto
Join Date: Mar 2009
Location: Zürich Area, Switzerland
Posts: 237
Rep Power: 18
fra76 is on a distinguished road
Hi Samuel,
there are a few threads about similar issues. Try to have a look to these two, for example:

http://www.cfd-online.com/Forums/ope...tml#post215615

http://www.cfd-online.com/Forums/ope...llel-runs.html

Hope this helps,
Francesco
Luttappy and parthigcar like this.
fra76 is offline   Reply With Quote

Reply

Tags
diverge, mpirun, parallel, serial, turbulence

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Poisson eq w setReference works serial diverges in parallel tehache OpenFOAM Running, Solving & CFD 5 August 29, 2012 10:41
Script to Run Parallel Jobs in Rocks Cluster asaha OpenFOAM Running, Solving & CFD 12 July 4, 2012 23:51
Working directory via command line Luiz CFX 4 March 6, 2011 21:02
Differences between serial and parallel runs carsten OpenFOAM Bugs 11 September 12, 2008 12:16
Serial run OK parallel one fails r2d2 OpenFOAM Running, Solving & CFD 2 November 16, 2005 13:44


All times are GMT -4. The time now is 11:08.