Hi guys, I am analyzing flow in the vane Pump using Star-CD 3.26(OS Win64, core Quad(4CPUs)). I want to run solver using 4CPUs. I tried to run using "star 4", but star didn't start and it says geometry decomp error. I heard that when moving mesh with events is used then I have to use manually SETS for decomposition method. My question is that how I can do manual decomp by sets? Any advice is most welcome!

Create a set file (help setw) defining the cell set's you want to go on each processor. Be sure to follow the StarCD requirements for moving mesh decomposition - they are in the manual.

thanks a lot Pauli, First i will try to run using 2CPUs. Model has two attach boundaries, so i have to specify one CPU to each attach boundary, right? To be honest, i don't have much experience about parallel computing. Can you be more specific how to do?

Thanks an advance for help

Regards

Not one attach boundary per processor but one interface per processor. And one interface consists of 2 attach boundaries.

Don't use all 4 cores. If u do, u may aswell be using 0.5 of a core. Simulations will slow down drastically due to FSB overload. Also, u need some processing power to keep the computer alive.

I would suggest to think along the lines of 2-3 cores

thanks guys for your help, i will try that