cyclicGgi - uncovered faces in parallel

seami · June 21, 2011, 02:54

Hello,
I have a problem with usage of cyclicGgi in parallel. There are uncovered faces and the simulation crashes after some time. The problem is just in parallel. There are no problems and no uncovered faces when running single job.
If I run "decomposePar" there are no uncovered faces found during decomposition, but when I start the simulation they appear.

Does anyone know where could be a problem?

Thanks a lot

Jiri

flowris · July 5, 2011, 10:36

Hello Jiri,

I also had this problem. Do your processor boundaries cross your ggi? In that case, try to lay them elsewhere, e.g. using manualDecomposition.

I am suffering from different problems with ggi myself, even in single run. if you send me your case, I will try to decompose it for you and maybe learn something myself from your setup.

June 21, 2011, 02:54	cyclicGgi - uncovered faces in parallel	#1
seami New Member Jiri Simonek Join Date: Jun 2011 Posts: 3 Rep Power: 15	Hello, I have a problem with usage of cyclicGgi in parallel. There are uncovered faces and the simulation crashes after some time. The problem is just in parallel. There are no problems and no uncovered faces when running single job. If I run "decomposePar" there are no uncovered faces found during decomposition, but when I start the simulation they appear. Does anyone know where could be a problem? Thanks a lot Jiri

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
[snappyHexMesh] SnappyHexMesh for internal Flow	vishwa	OpenFOAM Meshing & Mesh Conversion	24	June 27, 2016 09:54
[snappyHexMesh] snappyHexMesh won't work - zeros everywhere!	sc298	OpenFOAM Meshing & Mesh Conversion	2	March 27, 2011 22:11
DecomposePar unequal number of shared faces	maka	OpenFOAM Pre-Processing	6	August 12, 2010 10:01
[snappyHexMesh] external flow with snappyHexMesh	chelvistero	OpenFOAM Meshing & Mesh Conversion	11	January 15, 2010 20:43
Unaligned accesses on IA64	andre	OpenFOAM	5	June 23, 2008 11:37

July 5, 2011, 10:36		#2
flowris Senior Member Join Date: Apr 2010 Posts: 151 Rep Power: 16	Hello Jiri, I also had this problem. Do your processor boundaries cross your ggi? In that case, try to lay them elsewhere, e.g. using manualDecomposition. I am suffering from different problems with ggi myself, even in single run. if you send me your case, I will try to decompose it for you and maybe learn something myself from your setup.