Seminars & Events

Argonne Leadership Computing Facility
"Petascale Adaptive Computational Fluid Dynamics: Implementation and Key Ingredients for Time-To-Solution Compression"

DATE: January 23, 2012
TIME: 10:30 AM - 11:30 AM
SPEAKER: Michel Rasquin, Research Associate, University of Colorado
LOCATION: Building 240 / Room 4301, Argonne National Laboratory
HOST: Timothy Williams

Description:
This seminar is in line with the enhancement of our capacities to perform massively parallel CFD simulation and to compress further the time-to-solution for challenging problems in science and engineering. In this context, the implementation of our fully implicit adaptive stabilized finite element flow solver called PHASTA will be first presented. Two unique assets characterize this flow solver. The first one is its ability to perform anisotropic adaptivity of the initial 3D unstructured finite element mesh, which is required for complex geometries. The second one is related to its strong scaling performance, as it has been shown to scale up to 95% on 288K cores of the Jugene BG/P supercomputer. In addition to the parallelism of our domain decomposition approach, the improvement of our I/O capabilities will also be emphasized. Subsequently, our recent progress in co-visualization will be summarized, whereby a live data analysis is able to provide continuous and reconfigurable insight into massively parallel simulations, paving the way for interactive simulation and simulation steering. Specifically, we demonstrated our co-visualization concept of either the full data or in situ data extracts on 160K cores of the ALCF Intrepid BG/P supercomputer tightly linked through a high-speed network to 100 visualization nodes of the Eureka system which share 800 cores and 200 GPUs.

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