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

ggi and cyclicGgi performance

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

Reply
 
LinkBack Thread Tools Display Modes
Old   May 31, 2011, 07:17
Default ggi and cyclicGgi performance
  #1
Senior Member
 
Join Date: Feb 2010
Posts: 213
Rep Power: 8
vaina74 is on a distinguished road
Hi foamers.

I'd like to compare my experience with GGi and cyclic GGi. I usually apply these interfaces to the MRFSimpleFoam solver (a marine propeller case). The simulation runs on a cluster: every node consists of 2 Xeon E5520 processors (4 cores, 2.26 GHz) and 12 GB RAM. As I noticed the solving was not faster with a larger number of nodes, I made some little trials changing the CPUs number. I report my results in the attached graph (every line refers to the number of first iterations). I obtain the best performace with an almost-1 node (7 CPUs): is it common? I have no such experience to understand if it depends on the available hardware, my case settings or a (non-)optimization of ggi and cyclicGgi algorithms. I'd like to know your opinion about that.
Attached Images
File Type: png graph.png (20.0 KB, 31 views)
vaina74 is offline   Reply With Quote

Reply

Thread Tools
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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Cyclic GGi kurne OpenFOAM 13 October 23, 2013 02:07
cyclicGgi discontinuity problems mbecker OpenFOAM Running, Solving & CFD 5 February 27, 2011 12:36
about MRFSimpleFoam and ggi wllmk1 OpenFOAM Running, Solving & CFD 0 February 5, 2011 05:52
For cyclicGgi boundary pressure is not solved ! mahendra OpenFOAM Running, Solving & CFD 3 March 16, 2010 05:05


All times are GMT -4. The time now is 09:39.