In light of Nvidia removing 32-bit CUDA support from RTX 50-series GPUs and probably later as seen in https://nvidia.custhelp.com/app/answers/detail/a_id/5615/ and https://www.techpowerup.com/332763/nvidias-32-bit-physx-waves-goodbye-with-geforce-rtx-50-series-ending-32-bit-cuda-software-support, the BOINC client needs to be programmed to refuse to get 32-bit CUDA applications when fetching work for RTX 50-series GPUs or later.

Maybe the BOINC client might also have to be programmed to refuse to get 32-bit OpenCL applications as well when fetching work for RTX 50-series GPUs or later because Nvidia says that OpenCL runs on CUDA-powered GPUs as seen in https://developer.nvidia.com/opencl, so OpenCL might depend on an OpenCL to CUDA translation layer, but that hypothesis might need testing to confirm or reject.

I think this will be more of an issue for the projects, as part of them already having to determine what applications can be sent to which driver/hardware/OS combinations.

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Grant
Darwin NT.

I found confirmation that 32-bit OpenCL is not supported on RTX 50-series cards at https://www.notebookcheck.net/Strange-GeForce-RTX-50-series-benchmark-issues-solved-but-new-problem-for-gamers-arises.967614.0.html .

Continuation in https://boinc.berkeley.edu/forum_thread.php?id=15450