Benchmarking The Performance Impact To AMD Inception Mitigations
The good news is that the HPC performance on EPYC servers was largely unchanged by the new AMD Inception mitigations on this EPYC server.
The OpenRadioss software based on Altair Radioss did see some performance regressions primarily when using the alternative IBPB mitigation mode... But again, "safe RET" is the default, which for some OpenRadioss models did show some minor setbacks in performance.
On the whole though for the high performance computing workloads the AMD Inception mitigations didn't change much there and at least not erode the hefty margins AMD has generally had over the Intel Xeon competition.
Rendering workloads like Embree also were not impacted.