ANSYS Fluent is a powerful computational fluid dynamics (CFD) software tool. Fluent includes well-validated physical modeling capabilities to deliver fast, accurate results across the widest range of CFD and multiphysics applications.
Usage on the Login Nodes
Please limit interactive processing to short, non-intensive usage. Use non-interactive batch jobs for resource-intensive and/or multiple-core processing. Users are requested to be responsible and courteous to other users when using software on the login nodes.
The most important processing limits here are:
- ONE HOUR of PROCESSING TIME per login session.
- EIGHT CORES per login session on the same node or (cumulatively) across all login nodes.
Anyone found violating the processing limits will have their processes killed without warning. Repeated violation of these limits will result in account suspension.
Note: Your login session will disconnect after one hour of inactivity.
Usage on the Compute Nodes
Non-interactive batch jobs on the compute nodes allows for resource-demanding processing. Non-interactive jobs have higher limits on the number of cores, amount of memory, and runtime length.
For instructions on how to create and submit a batch job, please see the appropriate wiki page for each respective cluster:
#BSUB -J FluentJob1 # sets the job name to FluentJob1. #BSUB -L /bin/bash # uses the bash login shell to initialize the job's execution environment. #BSUB -W 5:00 # sets to 5 hours the job's runtime wall-clock limit. #BSUB -n 1 # assigns 1 core for execution. #BSUB -R "span[ptile=1]" # assigns 1 core per node. #BSUB -R "rusage[mem=5000]" # reserves 5000MB per process/CPU for the job (5GB * 2 Cores = 10GB per node) #BSUB -M 5000 # sets to 5,000MB (~5GB) the per process enforceable memory limit. #BSUB -o stdout1.%J # directs the job's standard output to stdout1.jobid ## Load the necessary modules module load ANSYS ## Launch fluent with proper parameters ## add -tX to run on multiple cores (eg -t2 for 2 cores) fluent 3d -g < inputfile
Usage on the VNC Nodes
The VNC nodes allow for usage of the a graphical user interface (GUI) without disrupting other users.
VNC jobs and GUI usage do come with restrictions. All VNC jobs are limited to a single node (Terra: 28 cores/64GB). There are fewer VNC nodes than comparable compute nodes.
For more information, including instructions, on using software on the VNC nodes, please visit our Terra Remote Visualization page.