https://stevengong.co/notes/Streaming-Multiprocessor

A Streaming Multiprocessor (SM) is a fundamental component of NVIDIA GPUs, 
consisting of multiple Stream Processors (CUDA Core) responsible for 
executing instructions in parallel.

From Stephen Jones, I learned that each SM can managed 64 warps, 
so a total of 2048 threads. However, it really processes 4 warps at a time, 
which