A hybrid MPI+OpenMP rewrite of the RAMSES code achieves roughly a 2x speedup, 70-77% lower RAM use, and 25-30% lower storage use at fixed core count in galaxy-formation benchmarks.
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RAMSES-yOMP: Performance Optimizations for the Astrophysical Hydrodynamic Simulation Code RAMSES
A hybrid MPI+OpenMP rewrite of the RAMSES code achieves roughly a 2x speedup, 70-77% lower RAM use, and 25-30% lower storage use at fixed core count in galaxy-formation benchmarks.