Chandrasekaran’s team has selected by the Oak Ridge Leadership Computing Facility (OLCF), through its Center for Accelerated Application Readiness (CAAR), to reach predictive capabilities for high electron energy simulations with the plasma physics application PIConGPU. This work is in collaboration with Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Germany. The goal being to explore hardware and software workflow for the next-generation exascale architecture, Frontier to be in place in 2021.
For more:
** Harnessing the power of the world’s fastest computer**
** Tests defy forecasts, show new promise for Frontier speeds**
** Super computing**
The OpenMP language features have been evolving to meet the rapid development in hardware platforms. The papers focus on evaluating implementations of OpenMP 4.5 target offload features in compilers such as Clang, XL and GCC that are an integral part of the software harness on supercomputers and clusters. We use Summit (Top supercomputer in the world as of November 2018) as one of our experimental setup. Such an effort is particularly critical on such supercomputers as that is being widely used by application developers to run their scientific codes at scale. Our tests not only evaluate the OpenMP implementations but also expose ambiguities within the OpenMP 4.5 specification. We also assess the overhead of the different OpenMP runtimes in relationship to the different directives and clauses. For more, read Analysis of OpenMP 4.5 Offloading in Implementations: Correctness and Overhead and
OpenMP 4.5 Validation and Verification Suite for Device Offload
Sunita Chandrasekaran and Guido Juckeland published an Edited book on OpenACC for Programmers: Concepts and Strategies, November 2017. The book provides a comprehensive and practical overview of OpenACC for massively parallel programming. Related articles: Eurekalert and insideHPC.
In this video from ISC 2017, Sunita Chandrasekaran and Michael Wolfe describe how OpenACC makes GPU-accelerated computing more accessible to scientists and engineers. More