@Jacques_Pienaar @csigg Thank you for your replies.
It is a little bit hard today, with all the moving compilers and runtime WIP parts, to really understand what kind of code it is really going to be produced and scheduled on the hw.
I think that the GAP It is still too large between people working every day on compilers+runtimes vs people that are just trying to figure out performance (gap?) on their high level API compositional path.
I hope that we can try to improve the current status  reducing this gap having more usability oriented documentation and tools on the high level (user) side of the spectrum.
If not It will be really hard to interact on a common playground about the performance.