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

Parallel run - number of processors

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

Reply
 
LinkBack Thread Tools Display Modes
Old   April 2, 2012, 11:44
Default Parallel run - number of processors
  #1
Senior Member
 
Daniele Vicario
Join Date: Mar 2009
Location: Novara, Italy
Posts: 142
Rep Power: 8
danvica is on a distinguished road
Is it possible to change the number of processors at run-time ?

In our office we have 5 workstations but just 1 of them is full-time dedicated to CFD.

It would be usefull to switch the execution on during the night and switch it off the day (but independently one of each other).

If anyone has an idea... thanks.

Daniele
danvica is offline   Reply With Quote

Old   April 2, 2012, 12:00
Default
  #2
Senior Member
 
Pablo Higuera
Join Date: Jan 2011
Posts: 233
Rep Power: 7
Phicau is on a distinguished road
Hi

just reconstruct the latest time, change it to a new folder and start from that point decomposing with the new number of processors.

Pablo
Phicau is offline   Reply With Quote

Old   April 2, 2012, 13:07
Default
  #3
Senior Member
 
Daniele Vicario
Join Date: Mar 2009
Location: Novara, Italy
Posts: 142
Rep Power: 8
danvica is on a distinguished road
Thanks ! Not as quick as I'd like in my cfd lazy dreams, but enought to be done.

Thanks again for the hint.

Daniele
danvica is offline   Reply With Quote

Old   April 3, 2012, 02:35
Default
  #4
Senior Member
 
Pablo Higuera
Join Date: Jan 2011
Posts: 233
Rep Power: 7
Phicau is on a distinguished road
You are welcome, just another hint: there is no need to hard copy your constant folder unless your mesh has changed, so just make a link to it in the new folder, it may save you lots of space.

Pablo
Phicau is offline   Reply With Quote

Old   April 5, 2012, 11:57
Default
  #5
Senior Member
 
Alberto Passalacqua
Join Date: Mar 2009
Location: Ames, Iowa, United States
Posts: 1,894
Rep Power: 26
alberto will become famous soon enoughalberto will become famous soon enough
redistributePar is what you are looking for.
__________________
Alberto Passalacqua

GeekoCFD - A free distribution based on openSUSE 64 bit with CFD tools, including OpenFOAM. Available as live DVD/USB, hard drive image and virtual image.
OpenQBMM - An open-source implementation of quadrature-based moment methods
alberto 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
Can't run in parallel JulytoNovember OpenFOAM Running, Solving & CFD 2 March 31, 2012 09:28
Problem with parallel run Hisham OpenFOAM Running, Solving & CFD 9 March 13, 2012 09:31
Working directory via command line Luiz CFX 4 March 6, 2011 21:02
Parallel Run on dynamically mounted partition braennstroem OpenFOAM Running, Solving & CFD 14 October 5, 2010 14:43
air bubble is disappear increasing time using vof xujjun CFX 9 June 9, 2009 07:59


All times are GMT -4. The time now is 13:30.