Hey @Ceylo I would love to contact you with the question :) I had the trace for executing this repo. https://drive.google.com/file/d/1jIKpeeq2vqarMaPi7swul0YoR7CiCuiG/view?usp=sharing

I am so sorry to forget posting my code :( here it is: https://github.com/FoodChain1028/metal-playground/tree/main/two-array-addition Another question might be: "Is there launching time for Metal Shader Kernels? If it is yes, how long will it take? (my assumption is that it depends on different kernels)" Thank you :)