Kokkos Framework

Kokkos is an ecosystem of libraries with performance portability in mind, that was initially developed by Sandia Labs and it’s part of the Exascale Project, and Trilinos. Captured directly from their documentation, the Core Kokkos package is described as follows:
Kokkos Core implements a programming model in C++ for writing performance portable applications targeting all major HPC platforms. For that purpose it provides abstractions for both parallel execution of code and data management. Kokkos is designed to target complex node architectures with N-level memory hierarchies and multiple types of execution resources. It currently can use CUDA, HIP, SYCL, HPX, OpenMP and C++ threads as backend programming models with several other backends development.