Why Soldiwork Flow 2015 solve too slow at 29% CPU(12core), 27/56 GB Ram with 7929089 fluid cells, 4026792 Partial cells?
Please help me?
Older versions of Flow Simulation utilize multiple cores for solving at a lower efficiency than newer releases. This is due to the overhead of having to split the calculation into several pieces to then pass out to each threads of the CPU. If my memory serves me the point of diminishing returns for that version was somewhere around 4 threads. Later versions improve this to somewhere around 8 threads above which they too would have diminishing returns.
Since you have 12 cores it is possible that your machine is running with 24 threads on the CPU which is far more threads than would be efficient. You may wish to go into this machine's BIOS and see if "Hyper Threading" is enabled or not. If it is enabled, disable it and see if your solver runs any better after that.
Hi Ryan Dark,
Thank you for your support. I turned off hyperthreading and my project run more quickly with 100% CPU, 88% Ram and 15 minutes per iteration.
A new year, new start and way to go. Wish you successful and glorious.
Thank you so much!!!
Correct, Hyperthreading for Flow Simulation is not useful, only load the CPU with additional calculation that slow down the system.
Once I told to an Intel engineer that they should provide cpu without hyperthreading for flow simulations.
Or use Task Manager and set Processor Affinity on Flow process to use only 4 or 8 CPU.
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