Bulletin of the American Physical Society
APS April Meeting 2019
Volume 64, Number 3
Saturday–Tuesday, April 13–16, 2019; Denver, Colorado
Session G11: Numerical Relativity: Algorithms and Code Development
8:30 AM–10:18 AM,
Sunday, April 14, 2019
Sheraton
Room: Governor's Square 17
Sponsoring
Unit:
DGRAV
Chair: Thomas Baumgarte, Bowdoin College
Abstract: G11.00003 : Dendro-GR: A scalable framework for Adaptive Computational General Relativity on Heterogeneous Clusters*
8:54 AM–9:06 AM
Presenter:
David W Neilsen
(Brigham Young University)
Authors:
David W Neilsen
(Brigham Young University)
Milinda Fernando
(University of Utah)
Hari Sundar
(University of Utah)
Eric Winston Hirschmann
(Brigham Young University)
We present a portable and highly-scalable frame-work that targets problems in the astrophysics and numerical relativity communities. This framework combines together the parallel DENDRO octree with wavelet adaptive multiresolution and a automatic code-generation physics module to solve the Ein- stein equations of general relativity in the BSSNOK formulation. The goal of this work is to perform advanced, massively parallel numerical simulations of binary black hole and neutron star mergers, including Intermediate Mass Ratio Inspirals (IMRIs) of binary black holes with mass ratios on the order of 100:1. We will discuss the development of automatic code generators for computational relativity supporting SIMD vectorization, OpenMP, and CUDA combined with efficient distributed memory adaptive data-structures. Preliminary results of binary black hole mergers will be presented.
*NSF PHY-1607356
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