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

error during solution initialization

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   March 26, 2008, 10:46
Default error during solution initialization
  #1
Muhammad Usman Qureshi
Guest
 
Posts: n/a
Hi,

i get following errors for various flow parameters when i initialize the solution:

Warning: ST_Malloc: out of memory.malloc_storage:

my mesh is 3D.

Thank you.

  Reply With Quote

Old   March 26, 2008, 12:00
Default Re: error during solution initialization
  #2
Daniel Tanner
Guest
 
Posts: n/a
Your mesh may require more memory than is available!

How big is your mesh (number of volume elements), how many processors are you initialising on, what is the processor architecture (do you have 32-bit or 64-bit) and what platform is it (Windows or Unix-type)?
  Reply With Quote

Old   March 28, 2008, 13:29
Default Re: error during solution initialization
  #3
Viren Rodrigues
Guest
 
Posts: n/a
I am having a similar problem. Though my case with initialize, when i try to iterate i get the error "error 100000: failed to allocate 51.36MB memory". When i look at my task manager however only about 2Gb of 3Gb of RAM is being used, there is still a significant amount of virtual memory as well. Is there any way to have fluent use more of the computers resources. I am working in 3D and i have about 2.7 million elements. I am running windows, i believe the process architecture is 32-bit, and i am initializing on one processor. Any help would be greatly appreciated.
  Reply With Quote

Old   March 28, 2008, 18:27
Default Re: error during solution initialization *NM*
  #4
Daniel Tanner
Guest
 
Posts: n/a
  Reply With Quote

Old   March 28, 2008, 18:33
Default Re: error during solution initialization
  #5
Daniel Tanner
Guest
 
Posts: n/a
The allocatable ram is platform limited. Theoretically a 32-bit processor can allocate ~ 4.3Gb (2^32) of ram.

However, Windows will only allow a maximum of around 1.5Gb of Ram to be allocated (for a single process on a 32-bit system). You could try a Linux platform, they allow slightly more. The alternative is to use a smaller mesh!
  Reply With Quote

Old   March 28, 2008, 18:38
Default Re: error during solution initialization
  #6
Viren Rodrigues
Guest
 
Posts: n/a
Hi,

Thanks for the help, my issue has been that the volumetric mesh could not be completed without a large number of elements as the part is complex. I believe I will have to simplify the geometry.

Thanks, Viren
  Reply With Quote

Old   March 28, 2008, 18:45
Default Re: error during solution initialization
  #7
Daniel Tanner
Guest
 
Posts: n/a
Do you mesh in Gambit? You could try size functions to focus mesh resolution in the important regions (large changes in geometry or large gradients in flow) and reducing mesh density in regions of uniform flow? Otherwise simplification would work. Good luck.

  Reply With Quote

Old   March 31, 2008, 08:26
Default Re: error during solution initialization
  #8
DenizeN
Guest
 
Posts: n/a
You are mashrooms! Try to run parallel vrsion on 32 mashine. This can help to use all 3 Gb of ram.

  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
solution initialization sri FLUENT 2 August 18, 2012 15:00
Solution initialization Tim Daly FLUENT 1 January 15, 2009 11:14
solution initialization Jabe FLUENT 0 May 9, 2008 13:42
Conduct initialization with a old mesh solution Jianfeng Zou FLUENT 1 September 12, 2007 07:06
Error msg on initialization Tushar FLUENT 0 May 3, 2005 16:30


All times are GMT -4. The time now is 15:44.