pciolkosz

### Is this a duplicate? - [X] I confirmed there appear to be no [duplicate issues](https://github.com/NVIDIA/cccl/issues) for this bug and that I agree to the [Code of Conduct](CODE_OF_CONDUCT.md) ### Is...

Add dimensions description functionality to CUDA Experimental library

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This pull request adds hierarchy_dimensions type template that allows to describe a hierarchy of CUDA threads with a mix of static and dynamic information. It can be used to pass...

Add meta dimensions specifiers to cudax::launch

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This change adds new types to describe dimensions in a hierarchy, called meta dimensions. These types are not holding specific values and instead communicate a specific intent. Dimensions built using...

[cudax->libcu++] Move the hierarchy type from cudax to libcu++

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The usual moving of APIs. The hierarchy and launch testing is a bit overlapped, so I had to temporarily comment out some tests.

[cudax->libcu++] Move buffer type from cudax to libcu++

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PR moving last bits of the buffer type and de-duplicating the `__memory_accessibility` enum

In https://github.com/NVIDIA/cccl/pull/6469 it was pointed out that `device_transform` might not be the best name for this functionality. We should rename it to either `device_cast` or `device_convert`