The new challenges presented by exascale system architectures have resulted in difficulty
achieving the desired scalability using traditional distributed-memory runtimes …

We introduce a new open-source software library $ Jet $, which uses task-based parallelism
to obtain speed-ups in classical tensor-network simulations of quantum circuits. These …

ABSTRACT octo-tiger is an astrophysics code to simulate the evolution of self-gravitating
and rotating systems of arbitrary geometry based on the fast multipole method, using …

To achieve scalability with today's heterogeneous HPC resources, we need a dramatic shift
in our thinking; MPI+ X is not enough. Asynchronous Many Task (AMT) runtime systems …

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 …

On modern supercomputers, asynchronous many task systems are emerging to address the
new architecture of computational nodes. Through this shift of increasing cores per node, a …

Ranging from NVIDIA GPUs to AMD GPUs and Intel GPUs: Given the heterogeneity of
available accelerator cards within current supercomputers, portability is a key aspect for …

Meeting both scalability and performance portability requirements is a challenge for any
HPC application, especially for adaptively refined ones. In Octo-Tiger, an astrophysics …

Octo-Tiger, a large-scale 3D AMR code for the merger of stars, uses a combination of HPX,
Kokkos and explicit SIMD types, aiming to achieve performance-portability for a broad range …

Octo-Tiger is a code for modeling three-dimensional self-gravitating astrophysical fluids. It
was particularly designed for the study of dynamical mass transfer between interacting …