Does SU2_DDC runs in parallel?

Abhii · July 20, 2013, 17:47

Hi

I have a novice question... during domain decompisition, does SU2_DDC runs in parallel, It looks like there is only one process partitioning mesh file? This is because in most clusters there is a memory limit per processor. Before modifying python file parallelcomputation.py I would was wondering if anyone could help me figure it out. Thanks a lot for your help.

amarkkassery · July 21, 2013, 18:37

SU2_DDC currently runs only in serial. However, for a fairly simple grid, it doesn't take too long to generate the decomposed grids.

economon · July 25, 2013, 02:07

Hi,

Starting with SU2 V2.0.5, SU2_DDC now runs in parallel. METIS is still called in serial at the moment (may change in the near future), but after the initial coloring procedure, the mesh partitions are processed and the files are written in parallel. Further improvements are on the way, but this should help considerably when partitioning large meshes.

Cheers,
Tom

July 20, 2013, 17:47	Does SU2_DDC runs in parallel?	#1
Abhii New Member Join Date: Feb 2013 Posts: 12 Rep Power: 13	Hi I have a novice question... during domain decompisition, does SU2_DDC runs in parallel, It looks like there is only one process partitioning mesh file? This is because in most clusters there is a memory limit per processor. Before modifying python file parallelcomputation.py I would was wondering if anyone could help me figure it out. Thanks a lot for your help.

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July 21, 2013, 18:37		#2
amarkkassery New Member Abhilash J Markkassery Join Date: Nov 2012 Location: Texas, United States Posts: 15 Rep Power: 13	SU2_DDC currently runs only in serial. However, for a fairly simple grid, it doesn't take too long to generate the decomposed grids.

July 25, 2013, 02:07		#3
economon Super Moderator Thomas D. Economon Join Date: Jan 2013 Location: Stanford, CA Posts: 271 Rep Power: 14	Hi, Starting with SU2 V2.0.5, SU2_DDC now runs in parallel. METIS is still called in serial at the moment (may change in the near future), but after the initial coloring procedure, the mesh partitions are processed and the files are written in parallel. Further improvements are on the way, but this should help considerably when partitioning large meshes. Cheers, Tom