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Table of Contents
Altair UltraFluidX
Introduction
UltraFluidX is a Lattice Boltzman solver that is part of Altair's suite of CFD codes. The CHPC hosts a license on behalf of the Mechanical engineering department at Nelson Mandela University. This license is access-controlled and available to users from the this department only. If you are interested in using any of the Altair fluid dynamics solvers, please contact Ernst Burger at Altair.
Pre- and post-processing
Altair's pre-processor Virtual Wind-tunnel is not available on Linux. However, consider running VWT on your Windows workstation and accessing your storage on the cluster by mounting it on your workstation with sshfs
Graphical post-processing can be done by means of Altair's tools, or with Paraview. The CHPC's Paraview page supplies instructions on how to use it on the system. Please note that although Paraview works well as a free-standing program, it is actually designed to be used in client-server mode, whereby you can make use of the power and memory capacity of a cluster compute node to handle the heavy processing while displaying the images on your own local workstation.
Using UltraFluidX
The software is installed under the directory
/apps/chpc/compmech/altair/CFD2021.2
To set up the paths to the relevant binaries, libraries, scripts and license server, source the setCFD script as follows:
. /apps/chpc/compmech/altair/setCFD
If you want to test interactively in a GPU-enabled compute node, first get an interactive PBS session and then source the script. The source statement also needs to be included in your PBS script, when you are running in the more typical batch mode. Obtain an interactive GPU node for 1 hour as follows (and please use your own project code!): <code> qsub -X -I -l select=1:ncpus=2:mpiprocs=2:ngpus=1 -q gpu_1 -P MECH1234 -l walltime=1:00:00
