Improving GPU Application Performance with NVIDIA CUDA 11.2 Device Link Time Optimization

Good question. We are working on support for JIT LTO, but in 11.2 it is not supported. So in the example you give at JIT time it will JIT each individual PTX to cubin and then do a cubin link. This is the same as we have always done for JIT linking. But we should have more support for JIT LTO in future releases.