Document Type
Conference Proceeding
Publication Date
11-12-2023
Abstract
In recent years, computers based on the RISC-V architecture have raised broad interest in the high-performance computing (HPC) community. As the RISC-V community develops the core instruction set architecture (ISA) along with ISA extensions, the HPC community has been actively ensuring HPC applications and environments [10, 29] are supported. In this context, assessing the performance of asynchronous many-task runtime systems (AMT) is essential. In this paper, we describe our experience with porting of a full 3D adaptive mesh-refinement, multi-scale, multi-model, and multi-physics application, Octo-Tiger, that is based on the HPX AMT, and we explore its performance characteristics on different RISC-V systems. Despite the (limited) capabilities of the RISC-V test systems we used, Octo-Tiger already shows promising results and good scaling. We, however, expect that additional hardware support based on dedicated ISA extensions (such as single-cycle context switches, extended atomic operations, and direct support for HPX's global address space) would allow for even better performance results.
Publication Source (Journal or Book title)
ACM International Conference Proceeding Series
First Page
1533
Last Page
1542
Recommended Citation
Diehl, P., Daiss, G., Brandt, S., Kheirkhahan, A., Kaiser, H., Taylor, C., & Leidel, J. (2023). Evaluating HPX and Kokkos on RISC-V using an astrophysics application Octo-Tiger. ACM International Conference Proceeding Series, 1533-1542. https://doi.org/10.1145/3624062.3624230