Understanding domain decomposition limiting factors

[donaldhume]

Hi all,

I have a model that runs successfully in Abaqus 2019x and I'd like to run it on multiple cores using the 'cpus' parameter from the command line. I use this parameter successfully for many other simulations but the domain distribution in the present simulation is awful. The decomposition looks something like 99%, 0.3%, 0.3%, 0.3%. I spent some time transitioning all of my contact pairs to general contact, assuming that was the primary issue. But still the distribution remains nearly 99% in one domain.

I'm wondering if there are ways which I can better understand the components that are driving poor decomposition. Is there a tool in CAE, or a way to get feedback from the preprocessor?

Thanks,
D

 

[FEA way]

Is it explicit analysis ? If yes then there are some options to control domain decomposition. Their detailed description can be found in the documentation. Mainly in the chapter "Parallel execution in Abaqus/Explicit" of Analysis User's Manual.