CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > SU2 > SU2 Installation

parallel vs single

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   June 20, 2014, 12:14
Default parallel vs single
  #1
Member
 
Hedley
Join Date: May 2014
Posts: 52
Rep Power: 11
hedley is on a distinguished road
Finally got parallel to run BUT where solving on the turb_ONERA6.cfg if I run on single core it runs TWICE as fast as on a four core ??

When running four core it seems to do the same job over on each core + all of the MPI overhead.
Attached Images
File Type: png 4core.PNG (42.9 KB, 23 views)
hedley is offline   Reply With Quote

Old   June 20, 2014, 12:30
Default
  #2
New Member
 
XingYu
Join Date: May 2014
Posts: 25
Rep Power: 11
454514566@qq.com is on a distinguished road
Do you can run parallel in win7?
If yes,you can tell me how to install the su2 v3.2 in win7,thank you greatly.
454514566@qq.com is offline   Reply With Quote

Old   June 20, 2014, 12:33
Default
  #3
Member
 
Hedley
Join Date: May 2014
Posts: 52
Rep Power: 11
hedley is on a distinguished road
No I gave up on that . To get it to run on Linux was more a matter of setting up the PATH's to the MPI /bin file . I still think although it runs it is not doing it properly as it is way slower than on one core. The Linux attempt is just a sanity test and once done will try and get windows working
hedley is offline   Reply With Quote

Old   June 23, 2014, 06:19
Default
  #4
New Member
 
Jeffrey van Oostrom
Join Date: Feb 2014
Location: Delft, The Netherlands
Posts: 16
Rep Power: 12
Doriris is on a distinguished road
It seems that each calculation is carried out 4 times on 4 cores, rather than 1 time on 4 cores. This is due to a faulty mpicxx setup. View this thread for more info:

http://www.cfd-online.com/Forums/su2...t-4-times.html

The same issue arised on my machine, I simply had to check if the link towards mpicxx was set correctly.
Doriris is offline   Reply With Quote

Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
simpleFoam parallel AndrewMortimer OpenFOAM Running, Solving & CFD 12 August 7, 2015 19:45
parallel Grief: BoundaryFields ok in single CPU but NOT in Parallel JR22 OpenFOAM Running, Solving & CFD 2 April 19, 2013 17:49
Error swithcing between single e parallel version of fluent bishop_house FLUENT 0 February 28, 2011 13:14
Parallel Processing of unsteady, structured single block c-grid drrbradford Fidelity CFD 0 April 22, 2010 12:15
P4 1.5 or Dual P3 800EB on Gibabyte board Danial FLUENT 4 September 12, 2001 12:44


All times are GMT -4. The time now is 07:25.