Replace mdspan with upstream libc++ implementation

NVIDIA / cccl

CUDA Core Compute Libraries

https://nvidia.github.io/cccl/

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Open jrhemstad opened 11 months ago

jrhemstad commented 11 months ago

[ ] Backport libc++ implementation to C++14 (no submdspan())
[ ] Implement submdspan_extents and write exhaustive tests for it
[ ] Implement the various submdspan_mapping specializations for the different mappings
[ ] Implement submdspan and write exhaustive tests for it
[ ] Implement layout_left_padded and write exhaustive tests for it
[ ] Implement layout_right_padded and write exhaustive tests for it

jrhemstad commented 11 months ago

@miscco to fill in the description and breakdown of tasks.

miscco commented 5 months ago

Update06/2024:

I have implemented and backported libc++ implementation and incorporated all tests into our test framework
I have implemented submdspan_extents without proper testing

@bernhardmgruber is taking that over on a "when time permits" basis