Hello mirek ans Tom,
Grenat work hère but I have une simple question: what is the point with cache ?
Normally cache speeds things up when you need to reaccess data just After writing it.
So filling a buffer with a constant value that is not read immediatly After in most cases isn't a corresponding use case.
So, I think that having a fill function that doesn't use cache at all will benefit in two points:
Timing stability and more importantly, cache is not touched so it can speed up other functions calls further