We study the simulation of stellar mergers, which requires complex simulations with high
computational demands. We have developed Octo-Tiger, a finite volume grid-based …

Between a widening range of GPU vendors and the trend of having more GPUs per compute
node in supercomputers such as Summit, Perlmutter, Frontier and Aurora, developing …

Abstract R Coronae Borealis (RCB) stars are rare hydrogen-deficient carbon-rich variable
supergiants thought to be the result of dynamically unstable white dwarf mergers. We …

We present a highly scalable demonstration of a portable asynchronous many-task
programming model and runtime system applied to a grid-based adaptive mesh refinement …

The optimization of performance of complex simulation codes with high computational
demands, such as Octo-Tiger, is an ongoing challenge. Octo-Tiger is an astrophysics code …

Benchmarking and comparing performance of a scientific simulation across hardware
platforms is a complex task. When the simulation in question is constructed with an …

We describe an interactive computing environment called JetLag. JetLag implements the
following features of Phylanx project:(1) Phylanx, a Python-based asynchronous array …

Stellar mergers between two suns are a significant field of study since they can lead to
astrophysical phenomena such as type Ia supernovae. Octo-Tiger simulates merging stars …

Current numerical codes can successfully evolve similar-mass binary black holes systems,
and these numerical waveforms contributed to the success of the LIGO Collaboration's …

We have developed a framework for simulating binary stars through all three relevant
timescales: the dynamical merger, thermal, and nuclear evolution. The framework begins by …