[Lance]

Hi,
I'm doing a 2-way FSI simulation using Workbench. It's basically a pipe with a precribed time dependent inlet velocity and outlet pressure. The problem is that my simulation is really really slow, and I wonder if there are some settings I've missed. One single timestep can take up to several hours even though my mesh sizes are reasonable small.

I'm using a linux cluster with 16 GB RAM and 8 cores with HP MPI Distributed Parallel.

My start command is:
cfx5solve -def $deffile -double -name $name -ansys-license aa_r -ansys-input $inpfile -par-dist $(hostlist -e -s, -a'*8' $SLURM_NODELIST) -start-method "HP MPI Distributed Parallel"

I've tried to add /nproc,2 to the ANSYS .inp file to get two cores, but couldn't see any difference.

I also get a warning that:
The current start method, HP MPI Distributed Parallel, is not a standard
PVM parallel start method, and so the parallel option cannot be changed
independently to Distributed Parallel. Request ignored.

If you are using both -start-method and -par-local or -par-dist on the
command line, you can move the -start-method switch to after the -par-*switch.

What does this mean? I have -start-method after -par-dist in the start command.

Any suggestions that could solve my problem(s) are highly appreciated!