The OpenMC Monte Carlo particle transport code

A new Monte Carlo code called OpenMC is currently under development at the Massachusetts Institute of Technology as a tool for simulation on high-performance computing platforms. Given that many legacy codes do not scale well on existing and future parallel computer architectures, OpenMC has been developed from scratch with a focus on high performance scalable algorithms as well as modern software design practices. The present work describes the methods used in the OpenMC code and demonstrates the performance and accuracy of the code on a variety of problems.

► An open source Monte Carlo particle transport code, OpenMC, has been developed.
► Solid geometry and continuous-energy physics allow high-fidelity simulations.
► Development has focused on high performance and modern I/O techniques.
► OpenMC is capable of scaling up to hundreds of thousands of processors.
► Results on a variety of benchmark problems agree with MCNP5.