PARTISN on Advanced/Heterogeneous Processing Systems [Slides]
Randal S. Baker, USDOE National Nuclear Security Administration (NNSA) · 2013
This presentation describes both the importance and the difficulty of parallelizing deterministic neutron transport calculations using the LANL code PARTISN. A brief history of the standard "KBA" parallelization method used for deterministic SN transport is presented, then the modifications necessary to implement this on Roadrunner are covered. The use of the Roadrunner algorithm with OpenMP is then described, along with a brief mention of an alternative thermal radiation transport algorithm for GPUs. Finally, ongoing work with PARTISN on the MIC many-core architecture is noted.