Question refined: How to contribute, and learn to contribute

[Martin Neuenhofen]

Hi everyone,

I would like to contribute and learn writing compute micro kernels.

I have studied computational engineering with three semesters in HPC, Matrix HPC, computer architecture, and parallel computing. In order to make full use of this knowledge, also to contribute to OpenBLAS, I lack the ability to write compute micro kernels.

How do the developers learn the skills required to write the assembly micro kernels?

I would like to be able to comprehend and tune the assembly generated from avx-enhanced c++ and tweak it for a given architecture. I would be glad for your advice on how to learn that, and references to reading material that you recommend. I am also searching for tutoring in micro kernel coding, so if anyone wants to offer their services please get in touch!

Kind regards,

Martin

PS: I am obviously fluent in the BLIS and ulmBLAS and etc tutorials and literature material. But that does not teach me the real deal; i.e., to read or repreduce https://github.com/xianyi/OpenBLAS/blob/develop/kernel/x86/gemm_kernel_2x4_barcelona.S . Tell me how I learn this, or who wants to teach it to me, and how much they want in return.