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

Scaling issue while performing HPC simulation (transient multiphase CFD)

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

LinkBack Thread Tools Search this Thread Display Modes
Old   January 7, 2021, 10:09
Default Scaling issue while performing HPC simulation (transient multiphase CFD)
New Member
Join Date: Jan 2020
Posts: 2
Rep Power: 0
am6e18 is on a distinguished road

I am running transient simulations on a supercomputer cluster. I submit a job description that acquires 32 nodes, each with 16 processors. However I recently noticed that the total wall-time of the job reflects only 1 node being utilised, which suggests that 31 nodes are not being used. I have been informed that this is an issue of "scalability" of my simulation. I would appreciate some guidance on how to maximise efficiency. I'm also unsure whether this is an issue that has to be fixed in the fluent case file, or that I need to adjust the PBS scripts.


am6e18 is offline   Reply With Quote

Old   January 18, 2021, 07:55
New Member
Join Date: Dec 2016
Posts: 24
Rep Power: 9
sfn is on a distinguished road
Check fluent root path and parallel settings in launcher. Also may be a problem in cluster configuration.
Anyway I think this problem should be solved by technical support team of company who provided cluster to you.
In my case we have a cluster with 96 nodes and there is no scalability problems with ansys software and fluent in particular.
sfn is offline   Reply With Quote


hoc, multiphase, pbs, supercomputer, transient

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
Transient multiphase flow simulation inside a high l/d ratio pipe zumanzi_011 Fluent Multiphase 0 January 1, 2021 13:52
[] Installing on Ubuntu 18.04 samiam1000 OpenFOAM Installation 11 April 27, 2020 00:01
CFD Salary CFD Main CFD Forum 17 January 3, 2017 17:09
transient simulation: natural convection problem? Basics CFX 3 September 25, 2002 09:42
Reactor simulation using CFD takes to the Internet Mark Brennan Main CFD Forum 0 April 16, 1999 05:57

All times are GMT -4. The time now is 15:48.