Guest Lecture by Mark Taylor on October 31, 2017

Lecture Title: Energy Exascale Earth System Model

Speaker: Dr. Mark TaylorE3SM Chief Computational Scientist, Sandia National Laboratories

 

Date: October 31, 2017
Location: ITE 325
Time: 2.30 p.m.

 

Abstract:

Dr. Taylor will present an overview of the DOE “Energy Exascale Earth System Model” (E3SM), including Sandia’s role in numerical algorithms, parallel scalability, and computational performance. E3SM, formally known as ACME, is designed to run on upcoming next-generation DOE supercomputers. Adapting simulation codes to these new architectures is expected to be more disruptive than the previous transition from vector to massively parallel supercomputers. E3SM development is driven by several grand challenge science questions focused Earth’s cryosphere, biogeochemical and water cycle systems. E3SM has a new land and atmosphere component models branched from the CESM v1.2, coupled to new MPAS ocean, sea ice, and land ice models.

He will discuss the current performance and throughput challenges of the E3SM high-resolution coupled configuration on several DOE
computers. Our current focus on the NERSC Cori system with Intel Xeon Phi architecture, and longer term we hope to make effective use of the upcoming NVIDIA GPU based system at ORNL. He will also give an analysis of the E3SM spectral element atmosphere dycore following the NGGPS dycore computational evaluation protocol, but with an emphasis on the throughput rates needed for climate simulations. For even higher resolution simulations, we will rely on E3SM’s ability to use unstructured grids in all component models. This will allow us to achieve cloud-resolving resolution in select regions of interest seamlessly within the global modeling system.

 

Bio:

Mark Taylor is a mathematician who specializes in numerical methods for parallel computing and geophysical flows. He currently serves as Chief Computational Scientist for the DOE’s Accelerated Climate Modeling for Energy (ACME) project. Mark developed the
mimetic/conservative formulation of the spectral element method, one of the atmospheric dynamical cores used in the Community Earth System Model (CESM) and the ACME project. Mark received his Ph.D. from New York University’s Courant Institute of Mathematical Sciences in 1992 and has worked at Sandia National Laboratories since 2004. In 2014 he was awarded The Secretary of Energy Achievement Award for his work unifying the DOE climate modeling research community and enabling the development of high-resolution fully-coupled climate-system simulations.

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