CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > CD-adapco

URGENT, max number of cells

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

Reply
 
LinkBack Thread Tools Display Modes
Old   August 18, 2004, 12:34
Default URGENT, max number of cells
  #1
new-user
Guest
 
Posts: n/a
Hello StarCD Users,

I have a question: what is the biggest possible number of cells which can be solved in StarCD? 1 milion, 100 milions?

Thank you

  Reply With Quote

Old   August 18, 2004, 17:53
Default Re: URGENT, max number of cells
  #2
Tom
Guest
 
Posts: n/a
I don't know the maximum number, but I am running a problem now that has about 8 million cells on 10 processors. Currently Argonne National Labs is running a model that has 73 million cells but requires 114 processors. Unfortunately, not all of us have access to the government's deep pockets.

As a general rule of thumb, if you are running hex cells, it takes about 45MB for 100K cells to run. However, to mesh the cells, it takes about 100MB per 500k cells. Tom
  Reply With Quote

Old   August 19, 2004, 10:36
Default Re: URGENT, max number of cells
  #3
new-user
Guest
 
Posts: n/a
Thank you Tom. So theoretically If I had a 2 processor pentiun IV with 2 GB of memory I could think about creating 1.5 - 2 millions of cells, is it correct?
  Reply With Quote

Old   August 19, 2004, 12:27
Default Re: URGENT, max number of cells
  #4
vladimir
Guest
 
Posts: n/a
with this hardware it should be possible to create something like 8 millions or even more. but then there is a problem of decomposing it for parallel computing. for such a large case you would have to use 64 bit machine to decompose your case. it could be run on 32 bits but not decomposed.
  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
Number of cells Johnny B FLUENT 2 March 17, 2010 05:00
max. number of cells Muhammad Shakaib FLUENT 1 January 24, 2006 19:30
how to monitor cells-urgent! azmir CD-adapco 4 July 5, 2004 06:40
SOS! HELP! max number of cells :( Jas Phoenics 4 February 14, 2004 11:12
Number of cells Christian Holm Main CFD Forum 8 February 20, 2002 08:37


All times are GMT -4. The time now is 06:43.