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

interFoam in parallel crashes (again)

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   January 3, 2017, 14:05
Default interFoam in parallel crashes (again)
  #1
New Member
 
Filipe Direito
Join Date: Mar 2010
Location: Porto, PORTUGAL
Posts: 9
Rep Power: 16
filipedireito is on a distinguished road
Hi! (And happy new year)

New year, old question. I was running a case with interFoam in parallel with 4 processors. It was fine. Then I decided to refine the mesh and the problem started. The simulations start running but at apparently random moment they stop in one of the these status (some old threads in this forum describe similar behavior):
- segmentation fault
- floating point exception (sometimes, but not always, with extremely high residuals)
- total pc freeze (have to reboot).

I then decided to test this on the damBreak case, to confirm the problem was not somewhere in my case. Running damBreak with 4 processors and 31k or 123k cells is apparently flawless. However, at 277k cells, the freezing/floating/segmentation problem appears.

I have read several webpages (most of them in CFD Online) and tried things like changing the MPI min Buffer. But I did not manage to solve the problem...

My system:
OF 4.1, systemOpenMPI
ubuntu 16.04
4720HQ, 16 gb ram, 16 gb swap

How I run:
setFields
decomposePar
mpirun -np 4 interFoam -parallel > log &
Attached Images
File Type: png resid.png (106.9 KB, 34 views)
filipedireito is offline   Reply With Quote

Reply

Tags
crash, interfoam, mpirun, parallel

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
Explicitly filtered LES saeedi Main CFD Forum 16 October 14, 2015 12:58
simpleFoam parallel AndrewMortimer OpenFOAM Running, Solving & CFD 12 August 7, 2015 19:45
interFoam in parallel gooya_kabir OpenFOAM Running, Solving & CFD 0 December 9, 2013 06:09
Parallel runs with sonicDyMFoam crashes (works fine with sonicFoam) jnilsson OpenFOAM Running, Solving & CFD 0 March 9, 2012 07:45
Moving mesh crashes in parallel (1.5-dev) jploz OpenFOAM Programming & Development 8 October 21, 2009 18:22


All times are GMT -4. The time now is 20:36.