Efficient mesoscale hydrodynamics: Multiparticle collision dynamics with massively parallel GPU acceleration

MP Howard and AZ Panagiotopoulos and A Nikoubashman, COMPUTER PHYSICS COMMUNICATIONS, 230, 10-20 (2018).

DOI: 10.1016/j.cpc.2018.04.009

We present an efficient open-source implementation of the multiparticle collision dynamics (MPCD) algorithm that scales to run on hundreds of graphics processing units (GPUs). We especially focus on optimizations for modern GPU architectures and communication patterns between multiple GPUs. We show that a mixed-precision computing model can improve performance compared to a fully doubleprecision model while still providing good numerical accuracy. We report weak and strong scaling benchmarks of a reference MPCD solvent and a benchmark of a polymer solution with research-relevant interactions and system size. Our MPCD software enables simulations of mesoscale hydrodynamics at length and time scales that would be otherwise challenging or impossible to access. (C) 2018 Elsevier B.V. All rights reserved.

Return to Publications page