A tangential request: is there any documentation on the architecture and engineering of OpenBLAS kernels? As a non-expert, delving into the assembly code did

A tangential request: is there any documentation on the architecture and engineering of OpenBLAS kernels? As a non-expert, delving into the assembly code did not give me any insights on how it worked, and I would love it if there was some way to ease people like me into the deep operation of those routines. Particularly, I would love to understand the engineering against CPU specifics (caches, superscalar arch, speculative ex.) and similar low-level insights. Thanks in advance!