The nvptx64-nvidia-cuda target is a compilation target for NVIDIA GPUs. When using this target, the final output is PTX. Two version choices shape that output:

• a GPU architecture (for example, sm_70, sm_80, …), which determines which GPUs can run the PTX, and
• a PTX ISA version, which determines which CUDA driver versions can load (and JIT-compile) the PTX.

In Rust 1.97…