Running Fluent on WinHPC
ANSYS-Fluent is installed in WINHPC systems.
To use our WIndows HPC system WINHPC, you need to request an account. For instructions on requesting an account and logging into WinHPC see Getting Started with WINHPC.
Checking fluent license use status
- Start > All Programs > ANSYS version > ANSYS Client Licensing > Client ANSLIC_ADMIN Utility
- Click View Status/Diagnostic Options >>>
- License Status is shown in the window
We have an ANSYS/Fluent pool to effectively utilize and manage the software. People that are going to use ANSYS/Fluent software need to contribute to that pool prior to using. Please contact Jason Lustbader in CTTS, <Jason.lustbader(@)nrel.gov> for information about the license pool and obtaining software.
Running fluent using Fluent Launcher
Start Fluent launcher e.g. by doing:
Start > All Programs > ANSYS version > Fluid Dynamics > FLUENT
Fluent is installed in compute nodes, WINHPC03, 04, 31, 32 for specific use by different groups. You can use the Remote Desktop Connection application to login to a compute node. Only two login sessions per compute node are allowed. Please contact HPC-Help@nrel.gov for setting up specific compute node access.
Setting The Fluent Environment for parallel runs
In the fluent launcher:
- Check Use Job Scheduler.
- Expand options by clicking Show More Options.
- Set the Fluent Working Directory to the desired shared working directory (when launching from workbench it will be set to the save directory automatically).
- If it is not already mapped to F:\ , type the Working Directory name \\WINHPCHN1\C\Public
You can create a directory under the public directory or send a request to have the directory created under C: to HPC-Help@nrel.gov.
To change the FLUENT Root Path either browse or click the button next to browse to attempt to convert the path automatically. If this doesn’t work type the name manually as \\computer_name\fluent, e.g., \\WINHPC31\fluent or \\WINHPC32\fluent should work.
In the next tab, Parallel Settings, choose MPI Types msmpi.
In the Scheduler tab, select the Computer Cluster Head Node Name WINHPCHN1.
If hyper‐threading is enabled it is desirable to limit the number of processes on each machine to the number of physical cores. In this case change the Processor unit from core to node, and set the Parallel per Job Scheduler to the desired number of nodes. Then in the Environment tab set the following environment variable:
CCP_NODES=%CCP_NODES% ‐cores #
(where # is the desired number of cores per node)
Note: setting this variable is similar to using the task Exclusive property so no other jobs can be started on these nodes.
It may be desirable to run a job on a particular set of nodes, the system administrator can set up a node group and that can be entered in the Scheduler tab. To request a node group you can send an email to HPC-Help@nrel.gov.
Available node groups can be found from HPC Job Manager.
Start > All Programs > Microsoft HPC Pack 2008 R2 > HPC Job Manager
From HPC Job Manger:
- Actions > Job Submission > New Job
- Click the 3rd tab, Resource Selection
- Available node groups are shown in the window.
Setting Fluent HPC license preferences
Start > All Programs > ANSYS version > ANSYS Client Licensing > User License Preferences
Click HPC and move ANSYS HPC Pack down if the runs will not be using Pack licenses.