Rahul
Ansys Employee

You can specify, the number of cores to be used for each participant as a fraction of the total cores in the system coupling GUI. 

RMB Coupling participant > Parallel solve setup...

Provide total cores to be used. Here in this example fluent will use 8 and mechanical will use 4 cores.


Please refer user guide for more details: Using Parallel Processing Capabilities (ansys.com)

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