#kernel execution

The article provides a detailed breakdown of the CPU-to-GPU path when launching a CUDA kernel, covering driver interaction, hardware communication, and warp scheduling. This fills a knowledge gap as many explanations stop at the kernel/block/warp level, but this article connects CUDA launch syntax to actual GPU submissions, which is valuable for GPU computing and HPC practitioners. The article covers topics such as the doorbell mechanism, queue management descriptor (QMD), and warp eligibility; it also explains semaphore handling in the default stream.