Development of performance portable numerical libraries for exa-scale plasma turbulence simulation

Performance portability is now considered as one of the most important requirement and challenge for HPC applications. Concerning the high performance portability, readability, and productivity, we decided to develop the performance portable version of the plasma turbulence simulation code in Kokkos. In addition to the programming model, we also need performance portability in numerical libraries. In this talk, we demonstrate the recent developments of direct matrix solvers for Spline interpolation on top of Kokkos and Kokkos-kernels. We also introduce kokkos-fft, a performance portable FFT interface for Kokkos.