Reply To: Unable to run lsrun on HPC cluster

[Reno Genest]

 

Hello Rajesh,

I checked with one of the EM developpers and he said that the EM solver should scale with more MPP cores, but it is problem dependent. The rule of 5-10k elements per core still applies. To better help you, we would have to look at the model. If you are a commercial customer, please create a support case on ACSS at customer.ansys.com. If you are an academic customer, you can contact you Ansys account manager for other ways to get support.

Also, the developer said: “If it is resistive heating solver, then scalability should be good. For Eddy current problems, the main cost will be the BEM system which uses dense matrices. The BEM solve also scales quite well, but matrix assembly and solving times vary drastically from one problem to the next so there it becomes harder to establish a general rule. In general, the choice of ncyclbem and which tolerance settings are used will play a greater role. And then, it gets more complex if EM contact is turned on.”.

Could you post the Timing Information at the end of the d3hsp file with %clock time? This would help identify which part of the model is taking the most CPU time.

 

At last, from your previous post, the EM timestep is very small and depending on the termination time, it will take a lot of time to compute. You may want to increase the time step size for a faster solve.

Let me know if this helps or not.

 

Reno.