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DESCRIPTION:Speaker: Alex H. Barnett, Group Leader, Numerical Algorithms, Center for Computational Biology Flatiron Institute (Simons Foundation), New York, NY
Talk Title: Building a Better Nonuniform Fast Fourier Transform
Abstract: The NUFFT allows Fourier analysis of data on non-uniform points at close-to-FFT speeds. It has many applications in science and engineering. I will explain what happens "under the hood" in our new implementation (FINUFFT). This includes 1) a simpler spreading kernel that accelerates run-times for the same accuracy, while preserving a rigorous error analysis, and 2) smart multi-threading. Along the way we will discover how the nationally known bluegrass fiddler Tex Logan fits into the story. Joint work with Jeremy Magland.
Biography: Alex Barnett is an applied mathematician and numerical analyst. He was a faculty member in the mathematics department at Dartmouth College for 12 years, becoming a full professor in 2017. He obtained his Ph.D. in physics at Harvard University, followed by a postdoctoral fellowship in radiology at Massachusetts General Hospital and a Courant Instructorship at New York University. His research interests include scientific computing, partial differential equations, integral equations, biomedical imaging, neuroscience, inverse problems and quantum chaos. Barnett is well known for numerical work in wave scattering, high-frequency eigenvalues, potential theory, periodic geometries and fast algorithms. He has received several grants from the National Science Foundation, and Dartmouth's Karen E. Wetterhahn Memorial Award for Distinguished Creative or Scholarly Achievement.
Host: Department of Aerospace and Mechanical Engineering
SEQUENCE:5
DTSTART:20180404T153000
LOCATION:SSL 150
DTSTAMP:20180404T153000
SUMMARY:Aerospace and Mechanical Engineering Seminar
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DTEND:20180404T163000
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