CFD Online Logo CFD Online URL
Home > Forums > FLUENT

How to get CPU time and flops

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

LinkBack Thread Tools Display Modes
Old   May 19, 2004, 08:22
Default How to get CPU time and flops
Posts: n/a
Hi there,

Im interested in the solver performance itself. My question is how to get the CPU time, as well the flops operation, memory allocation, and so on. That is to say if it's possible to get a profile (as in matlab or in c++) of the solution.


  Reply With Quote

Old   May 19, 2004, 13:28
Default Re: How to get CPU time and flops
Rob Hart
Posts: n/a
What operating system?

On unix, programs like "top", "ps", and "time" will be useful.

On windows you probably want to bring up the task manager, (press ctrl-alt-del) and turn on all the columns

You may get some useful information out of fluent itself.


  Reply With Quote

Old   June 2, 2004, 08:31
Default Re: How to get CPU time and flops
Posts: n/a
Hi, You can get the CPU time by run fluent in parallel mode and type in TUI "parallel timer print" //Kalle
  Reply With Quote

Old   June 11, 2004, 17:30
Default Re: How to get CPU time and flops
Posts: n/a
I think there is a fluent downalod program which dioes thsi but I am not sure. benchmark.scm Podila
  Reply With Quote

Old   December 7, 2012, 06:51
New Member
Join Date: Nov 2012
Posts: 20
Rep Power: 4
catrapi is on a distinguished road

For serial run, you can use the following TUI command that is executed before and after the iteration period of interest:
• The difference is the elapsed CPU time in seconds for the iteration period completed
catrapi is offline   Reply With Quote

Old   December 8, 2012, 19:18
Senior Member
François Grégoire
Join Date: Jan 2010
Location: Laval University, Canada
Posts: 366
Rep Power: 8
macfly is on a distinguished road
better late than never!
macfly is offline   Reply With Quote

Old   December 8, 2012, 22:54
Senior Member
Crank-Shaft's Avatar
Join Date: Oct 2012
Location: Sydney, Australia
Posts: 145
Rep Power: 5
Crank-Shaft is on a distinguished road
I was running a 3D, double-precision, steady-state simulation in parallel mode and I noticed that the output window provides time/iter in addition to the turbulence and transport variables. I am trying to understand what this actually represents since, I couldn't find it anywhere on the Manuals or User guides.

These values seem to be in a format XX:YY:ZZ and they are updating quite rapidly so I don't know whether this refers to minutes, seconds, total time or something different entirely. I have attached the image so please explain what this represents and whether it is a good way to capture the solver time or duration.
Attached Images
File Type: jpg Iterations.jpg (38.9 KB, 40 views)
Mechanical Engineering
Sydney, Australia

Crank-Shaft is offline   Reply With Quote


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
how FLOPS is calculated? gholamghar Main CFD Forum 1 February 23, 2010 11:33
FLOPS prasat Main CFD Forum 5 April 29, 2003 12:35
How to calculate CPU time in Linux system? HS Dou Main CFD Forum 6 March 1, 2000 23:38

All times are GMT -4. The time now is 20:52.