💾 Archived View for gemini.bortzmeyer.org › fosdem › event-10998.gmi captured on 2023-03-21 at 00:58:59. Gemini links have been rewritten to link to archived content
⬅️ Previous capture (2021-12-17)
-=-=-=-=-=-=-
Alaina Edwards
Type devroom
Starts on day 1 (2021-02-06) at 15:00 (Brussels time, UTC+1) in room Hpc (duration 00:30)
Matrix room #hpc:fosdem.org
In this talk we explore two programming models for GPU accelerated computing in a Fortran application: OpenMP with target directives and CUDA. We use an example application Riemann problem, a common problem in fluid dynamics, as our testing ground. This example application is implemented in GenASiS, a code being developed for astrophysics simulations. While OpenMP and CUDA are supported on the Summit supercomputer, its successor, an exascale supercomputer Frontier, will support OpenMP and translate CUDA-like models via HIP. In this work, we study and describe the differences and trade-offs between these programming models in terms of efforts and performance. Our hope is to provide insights on productivity and portability issues within these programming models.