Mini-PIC — A Particle-In-Cell (PIC) code on unstructured grids for next generation platforms

This talk outlines the infrastructure and capabilities of Mini-PIC, an open-source electrostatic/electromagnetic Particle-In-Cell (PIC) code, which has been developed to simulate low density plasmas in complex domains on unstructured meshes. This application is hybrid MPI+X and has been developed using the Kokkos (part of the Trilinos solver library) abstraction layer for the X. Kokkos enables execution on traditional clusters, Intel Phi, and GPUs using threads, OpenMP or Cuda all with the same application code. The application uses a FEM approach for fields and the linear systems are stored and solved with Tpetra, the next-generation solvers stack as part of Trilinos. Performance results will be given for Sandybridge CPUs, Nights Corner Intel Phi, and Nvidia K40m cards showing performant, scalable algorithms across the various platforms. Mini-PIC is available on the Mantevo website http://mantevo.org and is distributed under the BSD license.