Georgia Tech is set to present numerous papers and talks this year as well as a number of exciting events held in the Georgia Tech booth.
To stay up-to-date on GT@Supercomputing communications and events, please email CSE Communications.
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Abstract:
The heart is an electro-mechanical system in which, under normal conditions, electrical waves propagate in a coordinated manner to initiate an efficient contraction. In pathologic states, single and multiple rapidly rotating spiral waves of electrical activity can appear and generate complex spatiotemporal patterns of activation that inhibit contraction and can be lethal if untreated. Computational techniques have helped in explaining how these three-dimensional scroll waves underlie many cardiac arrhythmias, but limitations associated with making observations in the thickness of cardiac muscle have hindered a detailed understanding of the specific mechanisms responsible for reentrant wave formation and breakup. To further this effort, we apply data assimilation, a technique commonly used in weather forecasting, to recover the three-dimensional dynamics of reentrant waves in the heart. Specifically, our approach combines feasible dual-surface observations from a particular experiment with predictions from a numerical model to reconstruct the full three-dimensional time series of the experiment. In this talk, our implementation uses model-generated surrogate observations from a numerical experiment to evaluate the performance of an ensemble Kalman filter in reconstructing such time series for complex dynamical states including three-dimensional scroll waves. We show that our approach is able to recover time series of both observed and unobserved variables matching the truth. Where nearby observations are available, the error is reduced below the synthetic observation error, with a smaller reduction with increased distance from observations. Our findings demonstrate that state reconstruction for spatiotemporally complex cardiac electrical dynamics is possible and has the potential for successful application to real experimental data. To conclude this talk, we briefly describe several other avenues of research and computational methods developed to solve problems that intersect mathematics, physics, and physiology.
Biography:
Elizabeth Cherry received a BS in Mathematics from Georgetown University and a PhD in Computer Science from Duke University focusing on efficient computational methods for solving partial-differential-equations models of electrical signals in the heart. Over the years, her work has involved many different aspects of arrhythmia modeling, including model development and validation, design and implementation of efficient solution methods, and applications to understand the mechanisms responsible for particular complex dynamical states. She is presently an Associate Professor in the School of Mathematical Sciences at the Rochester Institute of Technology. She is also the Director of a new PhD program in Mathematical Modeling that trains students to formulate and solve mathematical and computational models of real-world phenomena in biology and medicine, environmental systems, complex networks, and other areas. She has received several awards for outstanding faculty of the year as well as for student mentoring and diversity, and her research has been supported by NSF and NIH grants.
Currently, industry leaders devote large-scale efforts on developing ways to derive value from these data and on designing new technologies that enable its exploitation, while Georgia Tech is a recognized innovator and developer of both big data technologies and its applications.
The Big Data Industry Forum brings together leaders from industry and Georgia Tech’s big data researchers to discuss the vision for big data, the value and opportunities it provides to industries, and the challenges that lie ahead to fully take advantage of the vast amounts of data being produced today.
The forum includes keynote talks by industry leaders, as well as provocative panel discussions, and also showcases research projects and new technologies being developed at Georgia Tech today.
For a detailed agenda of the event, please download a PDF version or visit the Big Data Industry Forum webpage.
]]>In November of 2014, SC is going back to New Orleans with new ideas and a fresh take on HPC. Spotlighting the most original and fascinating scientific and technical applications from around the world, SC14 will once again bring together the HPC community—an unprecedented array of scientists, engineers, researchers, educators, students, programmers, system administrators, and developers—for an exceptional program of technical papers, tutorials, timely research posters, and Birds-of-a-Feather (BOF) sessions.
The SC14 Exhibition Hall will feature exhibits of the latest and greatest technologies from industry, academia, and government research organizations; many of these technologies will be seen for the first time in New Orleans. Mark your calendar and make your way to New Orleans. No city offers the same extraordinary mix of food, music, culture, and history; and no conference offers a better opportunity to view why HPC matters.
Join the community in November to share our collective accomplishments and to engage in important conversations of how we make HPC Matter to our lives, our future, our communities, and our world.
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By: Dan Reed Corporate Vice President, Technology Policy Group, Microsoft Corporation
Title:
HPC 2.0: The Challenge of Scale
Abstract:
In just a few years, scientific computing has moved from the terascale to the trans-petascale regime, with research on exascale designs now underway. Large-scale scientific instruments, ubiquitous sensors and large scale simulations are now producing a torrent of digital data, with associated challenges of transport, analysis and curation. Disciplinary fusion and multidisciplinary collaborations are challenging our social structures, as teams from diverse backgrounds and organizations work together. Changes in scale, whether technical or sociological, always bring new challenges.
What are the emerging technologies that will drive the future of high-performance computing? How can we best integrate software management of component failures and system resilience, energy consumption and efficiency, and performance optimization in manageable and intuitive ways? How can we measure and optimize the performance of systems at scale? How do we balance use of commodity components and economies of scale against custom design, recognizing that technical computing has always tracked the consumer mainstream? What are the best ways to manage and extract insights from data at scale, and what are the economically viable ways to enable multidisciplinary data fusion and technology transfer? How can we simplify use of technical computing and broaden the base of users?
This talk will examine these and other issues technically, socially and economically, with an eye to the fusion of technology and policy.
Bio:
I head Microsoft's Technology Policy Group, whose role is to help shape Microsoft's long-term vision for technology innovations and the company's associated policy engagement with governments and institutions around the world.
Previously, I was the founding director of the Renaissiance Computing Institute (RENCI) at the University of North Carolina, the Chancellor's Eminent Professor, and Senior Advisor for Strategy and Innovation. Before that, I was head of the Department of Computer Science, Edward William and Jane Marr Gutgsell Professor, and Director of the National Center for Supercomputing Applications (NCSA) at the University of Illinois.
I have served as a member of the President's Council of Advisors on Science and Technology (PCAST) and chair of the Computing Research Association (CRA).
See http://www.microsoft.com/presspass/exec/Reed/ for details on me at Microsoft.
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New Orleans is where the future began for renowned discoverers and innovators of the past, and in November 2010, The Big Easy plays host to discoverers of the future at SC10, the 23rd meeting in the conference's annual history.
It's a great match. No city in the world is better known for its celebrations and its ability to reinvent itself. And no conference rivals SC10's planned international lineup of celebrated speakers, panel participants, presentations, workshops and exhibits featuring the latest breakthroughs in high- performance computing, networking, storage and analysis.
Spotlighting the most original and fascinating scientific and technical applications from around the world, SC10 will bring together an unprecedented array of scientists, engineers, researchers, educators, programmers, system administrators, developers and program managers and an exceptional program of technical papers, tutorials and timely research posters. SC10's Exhibition Hall will be second to none, featuring exhibits from international participants representing industry, academia and government research organizations.
Mark your calendar and make your way to New Orleans - be there for SC10, November 13-19. No city dishes out a bigger helping of southern hospitality, and no conference offers a better opportunity not just to glimpse the future of computing, but to participate in it-and collaborate with its discoverers.
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