I am getting an unknown error when trying to profile an application on a machine with dual 3090 GPUs. I have profiled the same application successfully on a machine with a single 3090. Any ideas what the issue might be?
Do you have SLI enabled on the dual GPU setup?
This issue could be related to the following limitation
(refer Nsight Compute known issues)
Profiling kernels executed on a device that is part of an SLI group is not supported. An "Unsupported GPU" error is shown in this case.