“Research Challenges in Computing” Seminar Series

“Research Challenges in Computing” Seminar Series
Friday, August 25, 11am-12pm
MEB 3147 (LCR)

Speakers: Martin Berzins and Manish Parashar

Portable Performance in General Purpose Exascale Calculations Challenges and Solutions?

Martin Berzins

Abstract: The challenge of both porting and obtaining consistent performance from new heterogeneous exascale-and-beyond architectures is addressed by an analysis of the components of the architectures and the performance imbalances that they carry. This leads to consideration of coding upon software portability abstractions and hiding delays that damage scalability. The benefits of this approach are shown both through high performance GPU solutions using these approaches and through performance comparisons across different GPUs using a single code base. A look forward to future architectures is taken.

This talk is based on work by about a dozen different collaborators in Utah, NIST and DOE.
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Data Management for Extreme-Scales In-Situ Workflows

Manish Parashar

Abstract: Extreme-scale scientific workflows continue to be challenged by the massive amounts of data that needs to be exchanged between workflow components and the associated costs. While in-situ workflow formulations are addressing some of these challenges and are enabling the creation of extreme scale coupled simulations and analysis workflows, these workflows involve complex data-driven interactions and data exchange patterns and require complex cost-performance tradeoffs and runtime resource management. In this talk I will explore these challenges and investigate how solutions based on data sharing abstractions, managed data pipelines, data-staging service, and in-situ / in-transit data placement and processing can be used to help address them. This research is part of the DataSpaces project.