Reply To: Why my GPU simulation is slower than CPU simulation

[Lito]

We currently have not done any tests on gaming GPU like the RTX 4080. We dont know why the simulation runs slower on RTX 4080. 

There are a few factors that could affect the performance, e.g. the simulation/model itself. The bandwidth of the machine/GPU. We have the following examples for GPU and CPU that you can use to test/benchmark. >>GPU Acceleration for Grating Coupler Optimizations in the Cloud with Ansys Access on Microsoft Azure – Ansys Optics<<

Compare the example when running on your system vs RTX 4080 GPU.