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

Memory requirements for serial and parallel runs

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

Reply
 
LinkBack Thread Tools Display Modes
Old   August 26, 2008, 15:11
Default Hi OpenFOAM-Community, I have
  #1
New Member
 
Fabian Denner
Join Date: Mar 2009
Location: Zurich, Switzerland
Posts: 11
Rep Power: 8
denner is on a distinguished road
Hi OpenFOAM-Community,
I have a question concerning the memory requirements of simpleFoam.

I tried to run a simpleFoam simulation with a mesh of about 4 million cells on a multicore-cpu computer with 8GB RAM. The serial-run breaks down when starting the 1st iteration. But if I take the same case, decompose into two parts and run in parallel with 2 nodes on the same computer (8GB RAM), there is no more memory problem.

Is there any special reason for that kind of memory reequirement?

Best regards,
Fabian
denner 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
Memory requirements of OF tools bastil OpenFOAM 3 March 26, 2014 09:35
Virtual memory problem with parallel runs Ali (Ali) OpenFOAM Running, Solving & CFD 21 May 25, 2011 04:27
Differences between serial and parallel runs carsten OpenFOAM Bugs 11 September 12, 2008 11:16
CFX-5.7 - Serial PC Maximum Memory Requirements James Date CFX 15 November 16, 2004 12:05
memory requirements Novak Elliott CFX 3 June 6, 2003 02:50


All times are GMT -4. The time now is 21:44.