sm_id

sm_id() -> Int

Returns the Streaming Multiprocessor (SM) ID of the current thread.

The SM ID uniquely identifies which physical streaming multiprocessor the thread is executing on. This is useful for SM-level optimizations and understanding hardware utilization.

If called on non-NVIDIA GPUs, this function aborts as this functionality is only supported on NVIDIA hardware.

Returns:

Int: The SM ID of the current thread.