Geodesy

Multi-core processor

Computational science

Benchmark (surveying)

Stencil

Operating system

Set (abstract data type)

Parallel computing

Computer science

Code (set theory)

Physical geography

Software

Computer architecture

Geography

Supercomputer

Porting

Programming language

Summit

Parallel Computing

WarpX is a general purpose electromagnetic particle-in-cell code that was originally designed to run on many-core CPU architectures. We describe the strategy, based on the AMReX library, followed to allow WarpX to use the GPU-accelerated nodes on OLCF’s Summit supercomputer, a strategy we believe will extend to the upcoming machines Frontier and Aurora. We summarize the challenges encountered, lessons learned, and give current performance results on a series of relevant benchmark problems.

Porting WarpX to GPU-accelerated platforms