Kokkos (as in the C++ template frame work and a lot of tools to get insights into bottle necks) is opens source. See https://github.com/kokkos/kokkos https://gi

Kokkos (as in the C++ template frame work and a lot of tools to get insights into bottle necks) is opens source. See https://github.com/kokkos/kokkos https://github.com/kokkos/kokkos and https://github.com/kokkos/kokkos-tools https://github.com/kokkos/kokkos-tools . They take pull requests and react to bug reports. They even plan to upstream some things from kokkos (such as multi-dimensional arrays) into future C++ standards. The mission related codes based on kokkos are very much not open source.