CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > ANSYS > FLUENT

Can FLUENT run under Linux with 2 Gb of RAM?

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

LinkBack Thread Tools Search this Thread Display Modes
Old   February 13, 2001, 20:10
Default Can FLUENT run under Linux with 2 Gb of RAM?
Paul Gregory
Posts: n/a
Greetings all

I am running FLUENT 5.3 on a Dual-Pentium machine with 2 Gb of RAM.

The problem is that when loading large mesh files (> 1 million cells) FLUENT often will be unable to load the case file into memory. While reading the grid, it will produce the error message "unable to allocate pointer to face number xxx". It will then clear the partially read grid.

I can get it to work, provided I reboot the system, and then immediately load the FLUENT case file. But if I start another program (e.g. Gambit), or quit that case file and try to load another one, I get the same error again. As you can understand, daily rebooting of a shared workstation is quite annoying.

I have re-compiled the kernel (2.2.16-22) to address 2 Gb of RAM and have enable large memory support. This made no difference. I also tried the 2.4.0 kernel.

At the moment, I am running a kernel with only 1 Gb of RAM, and everything works perfectly. I can run more than one case file at a time, and if I try to load in a case file which requires more RAM than is available, the kernel just uses swap you would expect.

So in conclusion, has anyone run FLUENT succesfully on a single Linux box with over 1 Gb of RAM?


Paul Gregory
  Reply With Quote


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
Fluent - Linux vs Windows derick FLUENT 2 August 16, 2020 11:23
Fluent in Linux vs. Fluent in Windows Melih FLUENT 6 November 16, 2014 09:39
Fluent 12.1 on Linux x64 Architecture Issue fivos FLUENT 5 April 24, 2010 15:19
Linux cluster for Fluent 6.3.26 Far Hardware 2 April 5, 2009 07:36
Fluent on Linux Cluster george FLUENT 0 August 11, 2006 04:57

All times are GMT -4. The time now is 03:08.