Prefer Kokkos::Experimental::sort_by_key() and drop rocThrust/oneDPL dependencies

[dalg24]

Defer to Kokkos and get rid of all the churn, both on the cmake-side to handle dependencies and the code path specializations.
I kept Details::KokkosExt::sortByKey() because I don't think Kokkos pushes a profiling region.

[dalg24]

I am not sure how much we care about the ARBORX_ENABLE_{ONEDPL,ROCTHRUST} exported CMake variables and macros. I just dropped them. We could technically map them to their Kokkos counterparts but I don't think it is worth the trouble.

[dalg24]

In file included from /opt/kokkos/include/Kokkos_Sort.hpp:25:
In file included from /opt/kokkos/include/sorting/Kokkos_SortPublicAPI.hpp:20:
/opt/kokkos/include/sorting/./impl/Kokkos_SortImpl.hpp:73:10: fatal error: 'oneapi/dpl/execution' file not found
#include <oneapi/dpl/execution>
         ^~~~~~~~~~~~~~~~~~~~~~

[dalg24]

The CUDA-12.0.1-NVCC-CUDA-AWARE-MPI build failure is unrelated and denotes an issue with the testing machine (fetnat_06)

nvlink fatal   : Could not open input file '/usr/lib/x86_64-linux-gnu/libcuda.so'

[aprokop]

I tried the same in #1191. I remember seeing some performance regression. You would need to run a lot of experiments to make sure there's none.

[dalg24]

I tried the same in #1191. I remember seeing some performance regression. You would need to run a lot of experiments to make sure there's none.

Should I assume you tested with the performance fix on random access iterators kokkos/kokkos#7304 ?

[aprokop]

Should I assume you tested with the performance fix on random access iterators kokkos/kokkos#7304 ?

Don't know. Regardless, we depend on Kokkos 4.5, and that patch appeared only in 4.6.01.

[dalg24]

we depend on Kokkos 4.5, and that patch appeared only in 4.6.01.

Kokkos 5.0 is a couple weeks out. Are we still committed to only supporting the last 2 Kokkos minor releases or is that something you were wanting to change.

[aprokop]

Kokkos 5.0 is a couple weeks out. Are we still committed to only supporting the last 2 Kokkos minor releases or is that something you were wanting to change.

I had bad experience of keeping with the last two releases, as propagating the new features into the projects that depend on Trilinos is so problematic.

[aprokop]

Trilinos 16.2 was released with Kokkos 4.7.1.