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Using heterogeneous GPU nodes with a Cabana-based implementation of MPCD

Halver, Rene·Junghans, Christoph·Sutmann, Godehard
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Abstract

In this study, the Kokkos based library Cabana, which has been developed in the Co-design Center for Particle Applications (CoPA), is used for the implementation of Multi-Particle Collision Dynamics (MPCD), a particle-based description of hydrodynamic interactions. Cabana allows for a function portable implementation, which has been used to study the interplay between CPU and GPU usage on a multi-node system as well as analysis of said interplay with performance analysis tools. As a result, we see most advantages in a homogeneous GPU usage, but we also discuss the extent to which heterogeneous applications might be more performant, using both CPU and GPU concurrently.

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97 MATHEMATICS AND COMPUTINGKokkosMPCDModular computing

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Halver, Rene, Junghans, Christoph, Sutmann, Godehard. 2023-06-15. Using heterogeneous GPU nodes with a Cabana-based implementation of MPCD. https://doi.org/10.1016/j.parco.2023.103033

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