CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > SU2

What is the best proper value of second per iteration?

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   April 6, 2023, 10:25
Default What is the best proper value of second per iteration?
  #1
New Member
 
MINSUL LEE
Join Date: Apr 2023
Posts: 8
Rep Power: 3
dlalstnf is on a distinguished road
Hello everyone!

I'm novice of running CFD.
So I don't know proper seconds per iteration.

I know that it depends on problem.

But, generally, Do you have any guideline about this?

In my case, 5 sec / iteration using 124 core..
Is it proper or not?

Thank you!
dlalstnf is offline   Reply With Quote

Old   April 6, 2023, 12:54
Default
  #2
Senior Member
 
bigfoot
Join Date: Dec 2011
Location: Netherlands
Posts: 548
Rep Power: 17
bigfootedrockmidget is on a distinguished road
A case I have has 1M points and the RANS solver with SA runs 5 s/iteration on 1 core.
So if it is scaling entirely linearly, then a 124M points case will also run 5s/iteration on 124 cores.

First thing to check is if your code was compiled with optimization on (debugging off, optimization flag -O2) and if you get a proper linear time reduction in nr of cores when using mpi.
bigfootedrockmidget is offline   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
pimpleFoam residual increase in final iteration AhmedHafez OpenFOAM Running, Solving & CFD 0 December 1, 2022 03:03
Slow calculation time on CFD server killian153 Hardware 4 July 27, 2021 07:28
Free surface issues with interDyMFoam for hydroturbine oumnion OpenFOAM Running, Solving & CFD 0 October 6, 2017 14:05
Hardware-Configuration for Fluent HPC-Pack (8x) JohHaas Hardware 9 March 3, 2015 13:25
Parallel runs slower with MTU=9000 than MTU=1500 Javier Larrondo FLUENT 0 October 28, 2007 22:30


All times are GMT -4. The time now is 11:06.