transitioning to hpc: experiences from the atmospheric sciences dr. joe galewsky department of earth...
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Transitioning to HPC:
Experiences from the
Atmospheric Sciences
Dr. Joe Galewsky
Department of Earth and Planetary Sciences
University of New Mexico
[email protected]://www.hpc.unm.edu/wrf/
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Lewis Fry Richardson
1881-1953
May 20, 1910:
First numerical weather forecast by direct integration of the equations of atmospheric motion. It failed because of
numerical instability.
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Richardson’s Forecast Factory
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John von Neumann and ENIAC
The first successful numerical weather forecast on March 5, 1950Operational numerical weather forecasting begin in 1954
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Yes, you can run the first weather forecast on your cell phone!
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QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.Creating the initial conditions:The data assimilation problem
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The ensemble mean gives a better forecast(on average) than any ensemble member. The ensemble spread *may*give a measure of forecast skill . . . But that’s still unclear.
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Ensemble forecasting
• How do we generate ensemble members with sufficient spread?
• How do we use ensembles to generate probability forecasts?
• How do we take advantage of petascale computing?
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Gordon Bell Prize - The Association for Computing Machinery
The Gordon Bell Prizes are awarded each year to recognize outstanding achievement in high-performance computing. The purpose of the award is to track the progress over time of parallel computing, with particular emphasis on rewarding innovation in applying high-performance computing to applications in science. Prizes are awarded for peak performance as well as special achievements in scalability and time-to-solution on important science and engineering problems and low price/performance. Financial support of the $10,000 award is provided by Gordon Bell, a pioneer in high-performance and parallel computing
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Surface process modeling– Diverse range of governing equations for
surface processes/geomorphology modeling.
– The need for decision support (e.g. forecasting) is not as well established.
– How can the basic science be advanced by transitioning to parallel architectures?
– Let’s build it and see what happens . . .