We produce one of the few pieces of commercial software (https://www.indigorenderer.com/ https://www.indigorenderer.com/) using OpenCL, and it works great on Nv

We produce one of the few pieces of commercial software (https://www.indigorenderer.com/ https://www.indigorenderer.com/) using OpenCL, and it works great on Nvidia cards. See https://www.indigorenderer.com/benchmark-results https://www.indigorenderer.com/benchmark-results for some benchmarks. All GPU results are using OpenCL. We used to have both an OpenCL and CUDA implementation in earlier versions. The CUDA version was slightly faster (10-15%?) on Nvidia cards, but not worth the effort of maintaining both implementations.