The first section found in Chapters contains source code and information from the book "Programming Massively Parallel Processors" by David B. Kirk and Wen-mei W. Hwu. You can find the book here.
The second section found in Performance-Tests-NvBench contains benchmarks done with the NvBench Project.
at pyspur.dev, which is an online service to develop AI Agents.
The linked tutorial is good intro material. Single-Instruction Multiple-Thread model (SIMT) etc reminded me of Computer Architecture class at at IUPUI.