we have installed CFD on a Dell workstation with 16 cores and 64GB RAM. I am looking at the Task Manager during simluation and I can see that CFD is using all 16 cores but the overall performance is about 40% only. even the fan speed of the workstation is not going up.
What can I do to make the machine use all of the capacities?
For each SimCFDSolver.exe process, we set the Priority to Low. We do this so your system is usable during solving. You can increase the priority on each SimCFDSolver.exe process by: Task Manager > Right Click on Process Name > Set P
Thanks for the quik response.
One more question: Do I hve to switch of the hyper threading? Is there a diference in stability and calculation speed with and without hyper threading?
The main reason you see that value in the Task Manager is that we are only running 1 solver / physical core.
8cores means 8solvers. Each solver will use ~100% of the core its assigned to. So as far as windows will report due to hyperthreading taht <100% is utilized as it shows all 16cores, and only 8 of which are being taxed fully. So for your machine if we were running at full speed we would read 50% utilization via taskmanager.
There are some instances where disabling HT can improve performance of the solver. With HT turned off you would then see this percentage go up to 80/90%