1. FY 12 IPR Parallel Framework Capabilities PT123 computational kernel handles various ODE solvers. P2P communication model. Particle-mesh correlation provides mechanism to partition based on mesh only, particles only, or combination of mesh and particles after weighting. Framework has a plug-in for particle behavior/interaction. Further study on hybrid parallelism is recommended.

2. FY 12 IPR Software Architecture for PT123 Parallelization

3. FY 12 IPR Particle-Mesh Correlation prev2 pt_data local head. particle 2particle m next1 prev1 particle 1 element set_part_list_to_tri next2

4. FY 12 IPR Parallel Framework Accomplishment PT123 framework provides various Runge-Kutta methods for ODE solvers --- 1 st order, 2 nd order, 4 th order, 4 th and 5 th order adaptive integrator. Element-by-element tracking with automatic time-step reduction and lower-order RK adaption. API functions for application developers: PTinit, PTinit_mesh, PTebeDriver, PTdestroy_context, etc. A parallel application compliant with the serial particle tracking code is developed. Two test cases---2d_t_uniform_t and 2d_t_swirl_t---were run both serial and parallel. The framework will have a plug-in for particle behavior/interaction. Partitioning algorithms will be further studied.