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 …

The increasing availability of machines relying on non-GPU architectures, such as ARM
A64FX in high-performance computing, provides a set of interesting challenges to …

Dynamic and adaptive mesh refinement is pivotal in high-resolution, multi-physics, multi-
model simulations, necessitating precise physics resolution in localized areas across …

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 …

To help ease ports to forthcoming Department of Energy (DOE) exascale systems, testbeds
have been made available to select users. These testbeds are helpful for preparing codes to …

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

Kokkos provides in-memory advanced data structures, concurrency, and algorithms to
support performance portable C++ parallel programming across CPUs and GPUs. The …

Exascale supercomputers capable of computing 10 18 double-precision floating point
operations per second are expected to be operational around 2022/23. The complexity and …

This research addresses node-level scalability, portability, and heterogeneous computing
challenges facing asynchronous many-task (AMT) runtime systems. These challenges have …