Andreas Klöckner authored 8 months ago and Andreas Klöckner committed 8 months ago

Also, required from __future__ import annotations

* remove BlockIndexRanges and friends from sumpy

Moving these to pytential, since sumpy does not need to know about
how those indices are sectioned into blocks and other things like that.

* Adjust branches for pytential downstream CI

Co-authored-by: Andreas Klöckner <inform@tiker.net>

* renamed BlockIndex to BlockIndexRanges.
* renamed `view` to `take`, since the methods allocate and would cause
confusion.
* reduce the number of queues being passed around.

* created a new class that holds 1D block index information.
* add a few convenience functions to hide the implementation details.
* make everything work with cl arrays and add some functions to do a
mass get() on all the arrays.