|
[Sponsors] |
![]() |
![]() |
#1 |
New Member
Filipe Direito
Join Date: Mar 2010
Location: Porto, PORTUGAL
Posts: 9
Rep Power: 16 ![]() |
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 & |
|
![]() |
![]() |
![]() |
Tags |
crash, interfoam, mpirun, parallel |
|
|
![]() |
||||
Thread | Thread Starter | Forum | Replies | Last Post |
Explicitly filtered LES | saeedi | Main CFD Forum | 16 | October 14, 2015 11:58 |
simpleFoam parallel | AndrewMortimer | OpenFOAM Running, Solving & CFD | 12 | August 7, 2015 18:45 |
interFoam in parallel | gooya_kabir | OpenFOAM Running, Solving & CFD | 0 | December 9, 2013 05:09 |
Parallel runs with sonicDyMFoam crashes (works fine with sonicFoam) | jnilsson | OpenFOAM Running, Solving & CFD | 0 | March 9, 2012 06:45 |
Moving mesh crashes in parallel (1.5-dev) | jploz | OpenFOAM Programming & Development | 8 | October 21, 2009 17:22 |