Date and Time: April 21 (Thursday) at 2:45pm Refreshments: 2:45pm Talk: 2:55pm Speaker: Wes Bethel, LBNL Title: Exascale Computing Challenges and Volume Rendering Optimizations for Advanced Architectures Abstract: Computer simulations of scientific phenomena play a key role in modern science. Over the years, these computational science projects have benefited greatly from advances in computational capacity, and this trend is expected to continue forward into the exascale regime. Due to limits of Moore's Law scaling, the exascale platform is expected to be significantly different than previous generations of supercomputers. We will discuss some of the challenges facing computational science projects that result from these changes, and review research results from performance optimization studies of a staple scientific visualization algorithm, raycasting volume rendering, that anticipate some of the architectural challenges we will face at the node level on an exascale platform. Bio: E. Wes Bethel is a Senior Scientist at Lawrence Berkeley National Laboratory, where he engages in and leads a vibrant research program in high performance visualization and data analysis that aims to facilitate knowledge discovery from large scientific data produced by computer simulations and experiments using some of the world's largest computational platforms. He received his Ph.D. in Computer Science from the University of California Davis, is a Senior Fellow at the Berkeley Institute for Data Science, and is an ACM Distinguished Scientist.