interFoam stops without error

tinu80 · December 2, 2016, 04:10

Hi all,
I sometimes experience a strange behavior when running interFoam in parallel (6 cores). It seems to run fine without any signs of the case blowing up, and then suddendly stops execution without any error, at least in the interFoam output. Timesteps, courant, residuals, all seem to stay constant.
When starting again (again from t=0) the same simulation will run perfectly fine until its end.
I have no clue at all what could cause this issue.
The only hint I have is that I was using the computer (e.g. logging in on Ubuntu, opening the case folder) just before this happened. But this might be misleading.
Has anyone experienced similar issues?

Some infos about my system:
2x Xeon 2650 , 64 GB reg ECC RAM
Ubuntu 16.04 LTS
OpenFoam 4.1

Any hints are highly welcome. If you would need additional infos, feel free to write me.

chivaee · October 9, 2017, 21:17

I’ve got the same problem - only with waveDyMFoam ( which belongs to interfoam family).

arjun · October 9, 2017, 21:39

it seems it is an issue with ubuntu.

I started using linux mint because of this. Everything was fine until 14.04 ubuntu but as soon as 16 version came, it started to kill the process and many times this situation appeared.

So far have not observed with mint.

EmaManu · February 9, 2019, 17:17

Hi!
I'm experiencing the same problem with interFoam: simulation stops after some iterations, without error messages... then I relaunch it and it continues for some time then it stops again ... and so on
I'm using ubuntu 18.04 on windows 10 openfoam 1712 and openfoam 6

wulonglong · June 11, 2019, 05:03

I also got the same problem...

and when I restarted the simulation, sometimes it could finish but sometimes it would stop again...

Do you have any idea how to fix it? Or any recommendations?

I'm using Ubuntu 16.04, OpenFOAM-extend 4.0

madhukar_m_rao · June 20, 2019, 02:25

Could be the linux out of memory killer (OOM) killing the process

DineshMyilsamy · June 20, 2019, 02:35

Hi tinu,
Did you check the workspace memory? Because I faced the same problem when I check the workspace there was no sufficient memory. Once I cleared the space then it worked for me.

December 2, 2016, 04:10	interFoam stops without error	#1
tinu80 New Member Tinu Join Date: Nov 2016 Posts: 11 Rep Power: 10	Hi all, I sometimes experience a strange behavior when running interFoam in parallel (6 cores). It seems to run fine without any signs of the case blowing up, and then suddendly stops execution without any error, at least in the interFoam output. Timesteps, courant, residuals, all seem to stay constant. When starting again (again from t=0) the same simulation will run perfectly fine until its end. I have no clue at all what could cause this issue. The only hint I have is that I was using the computer (e.g. logging in on Ubuntu, opening the case folder) just before this happened. But this might be misleading. Has anyone experienced similar issues? Some infos about my system: 2x Xeon 2650 , 64 GB reg ECC RAM Ubuntu 16.04 LTS OpenFoam 4.1 Any hints are highly welcome. If you would need additional infos, feel free to write me. EmaManu likes this.

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October 9, 2017, 21:17		#2
chivaee New Member Hamid Join Date: Mar 2012 Posts: 20 Rep Power: 14	I’ve got the same problem - only with waveDyMFoam ( which belongs to interfoam family).

October 9, 2017, 21:39		#3
arjun Senior Member Arjun Join Date: Mar 2009 Location: Nurenberg, Germany Posts: 1,290 Rep Power: 34	it seems it is an issue with ubuntu. I started using linux mint because of this. Everything was fine until 14.04 ubuntu but as soon as 16 version came, it started to kill the process and many times this situation appeared. So far have not observed with mint.

February 9, 2019, 17:17		#4
EmaManu New Member Emanuele Ponzano Join Date: Feb 2018 Posts: 15 Rep Power: 8	Hi! I'm experiencing the same problem with interFoam: simulation stops after some iterations, without error messages... then I relaunch it and it continues for some time then it stops again ... and so on I'm using ubuntu 18.04 on windows 10 openfoam 1712 and openfoam 6

June 11, 2019, 05:03		#5
wulonglong New Member wulonglong Join Date: Jan 2018 Posts: 7 Rep Power: 8	I also got the same problem... and when I restarted the simulation, sometimes it could finish but sometimes it would stop again... Do you have any idea how to fix it? Or any recommendations? I'm using Ubuntu 16.04, OpenFOAM-extend 4.0

June 20, 2019, 02:25		#6
madhukar_m_rao New Member Dr. Madhukar M Rao Join Date: Nov 2010 Location: Bangalore, India Posts: 21 Rep Power: 16	Could be the linux out of memory killer (OOM) killing the process

June 20, 2019, 02:35		#7
DineshMyilsamy New Member Dinesh Join Date: Jun 2018 Posts: 15 Rep Power: 8	Hi tinu, Did you check the workspace memory? Because I faced the same problem when I check the workspace there was no sufficient memory. Once I cleared the space then it worked for me.