Merge pull request #3993 from cz4rs/kokkos

Add topic "kokkos"

Author: ahpook

topics/kokkos/index.md

@@ -0,0 +1,10 @@
+---
+display_name: Kokkos
+github_url: https://github.com/kokkos
+logo: kokkos.png
+related: c-plus-plus, parallel-computing, high-performance-computing
+short_description: Kokkos C++ Performance Portability EcoSystem.
+topic: kokkos
+url: https://kokkos.github.io/
+---
+The Kokkos C++ Performance Portability Ecosystem is a production level solution for writing modern C++ applications in a hardware agnostic way. The Ecosystem consists of multiple libraries addressing the primary concerns for developing and maintaining applications in a portable way. The three main components are the [Kokkos Core Programming Model](https://github.com/kokkos/kokkos), the [Kokkos Kernels Math Libraries ](https://github.com/kokkos/kokkos-kernels) and the [Kokkos Profiling and Debugging Tools](https://github.com/kokkos/kokkos-tools).