Radioss Solver Run Issue on AMD threadripper pro processor.

NIkhilesh

Hi Team,

We are trying to run a Radioss simulation, which is taking longer time on AMD processor compared to Intel. And also, when the same run is carried only on AMD processor with multicore usage, 32 cores is taking lesser time than 64 cores whereas to happen vice-versa.

For example, 32 cores AMD processor is taking 0.5 hr to run a simulation where 64Cores is taking almost 1 hr to solve the same solution.

we found some issue with the scalability.

Does anyone has come across this kind of issue ?

Any solution would help me.

Thanks

Nikhilesh

Guilherme_

Hello @NIkhilesh

Does your processor have 64 physical cores, or does it include logical cores as well? Could you provide details about your AMD processor?

Additionally, which operating system are you using, and how are you submitting the job (e.g. Compute Console)? If you are using Windows 10 but no the latest version, you migh need to set the KMP_AFFINITY environment variable to disabled.

In general, for parallelism settings, I would recommend checking this article: Altair Radioss Parallel Computing Methods.