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Ensemble Simulations on Leadership Computing Systems
DescriptionScientific productivity can be enhanced through workflow management tools, relieving large High Performance Computing (HPC) system users from the tedious tasks of scheduling and designing the complex computational execution of scientific applications. This paper presents a study on the usage of ensemble workflow tools to accelerate science using the Summit and Frontier supercomputing systems. The research aims to connect science domain simulations using Oak Ridge Leadership Computing Facility (OLCF) platforms with ensemble workflow methods to boost scientific impact. We present the coupling, porting and optimization of Radical-Cybertools on simulations. The tools augment traditional HPC monolithic runs with a pilot scheduler. We discuss intrinsic limitations of coupling and porting ensemble workflow tools to applications that run
on large HPC systems. The origins of technical challenges and their solutions developed during the implementation process are discussed. Data management strategies, OLCF’s policies for ensembles, and natively supported workflow tools are also summarized.
on large HPC systems. The origins of technical challenges and their solutions developed during the implementation process are discussed. Data management strategies, OLCF’s policies for ensembles, and natively supported workflow tools are also summarized.
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