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August 17, 2013

Mtg: Simulating Beyond a Billion Degrees of Freedom

by @ 3:40 pm. Filed under ALL, Computers/Software, Electronics Design, Engineering Mgmt
 

WEDNESDAY October 16, 2013
SCV Control Systems Chapter
Speaker: Dr. Elliot English, Lawrence Berkeley National Laboratory
Time: Presentation at 6:30 PM
Cost: none
Place: International Technological University, 355 W. San Fernando St., San Jose
RSVP: not required
Web: sites.ieee.org/scv-css

Over the last few years, the computational power available to both researchers and industry has increased at a rapid pace with the introduction of supercomputer type clusters with more than a million cores and a petabyte of memory.  However, this increase has not been met with an equal increase in ability to run large simulations due to issues with the architecture of these systems.  Traditional algorithms have difficult dealing with the low memory bandwidth to floating point performance ratios of modern cpus, as well as the high communication costs of distributed systems.  I will be presenting recent work on a variety of algorithms and approaches that address these issues in the context of solving fluid dynamics dynamics problems and the hyperbolic (material transport), parabolic (viscosity and heat diffusion) and elliptic (incompressible fluid pressure forces) equations that arise.  I will talk generally about block-structured discretizations such as Adaptive Mesh Refinement (AMR) and overlapping grid (Chimera) approaches.  They allow for greatly simplified domain decomposition, simplified numerical schemes, and improved solution accuracy when compared to unstructured approaches.  I will also talk about applications within visual effects, aero/astronautics, and climate modelling.

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