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CS Seminar| Green Flash: energy-efficient real-time computing for adaptive optics on telescopes

Start Date: September 13, 2017
End Date: September 13, 2017

By Professor Damien Gratadour (Universite Paris Diderot and LESIA )
Green Flash is a nearly 4M Euro Horizon 2020 project to design and build a real-time controller for the world's largest telescope, whose Adaptive Optics (AO) system contains many thousands of mirrors to correct for atmospheric aberrations, in which linear algebra software developed at KAUST is playing a key role. Controlling sophisticated Adaptive AO systems on the future Extremely Large Telescopes (ELTs) is a still unresolved challenge, and as the ELTs are generally remote from human habitation, energy efficiency is critical. Green Flash is an international joint industrial and academic project intended to study and exploit future and emerging computing technologies for real-time control. This includes the hard real-time data pipeline, the soft real-time supervisor module, as well as a real-time capable ELT-scale simulation to test and verify proposed solutions. To date, we have initiated in-depth studies on GPUs, MICs and FPGAs. Moreover, beyond computing capabilities, it is critical for these future AO real-time controller (RTC) to address the data flow challenges both in terms of the large rate of streaming data from sensors and in terms of heterogeneous data streams in the system. A strong emphasis is thus made in the project around interconnect strategies using dedicated hardware, middleware, and software. Here we review the project goals and results at the mid-point of this three-year endeavor and we describe the downselection process that will lead to the design of a full featured prototype.
Biography: Damien Gratadour has been an associate professor at Universite Paris Diderot and research scientist at LESIA, Observatoire de Paris since 2008. Damien holds an M.S. in theoretical physics and a Ph.D. in observational astronomy from Universite Paris Diderot. In the past, Damien has been responsible for the last stages of commissioning of the LGS upgrade to the Altair adaptive optics (AO) system on the Gemini North Telescope in Hawaii (2006). He spent two years as an AO scientist, with the responsibility of instrument scientist for GeMS, the Gemini MCAO System, a $15 million facility, actively participating in the various acceptance tests and integration of its sub-systems and first stages of technical tests of the full instrument and most notably the DSP-based real-time controller (RTC). Since 2008, at Observatoire de Paris, Damien is concentrating on high performance numerical techniques for astronomy for modeling, signal processing and instrumentation and on the development of observational programs, with AO-equipped, large ground-based telescopes, for the study of star formation in merging galaxies. He coordinates several national and international projects aimed at designing and building supercomputers for AO.

More Information:

For more info contact: Professor David Keyes : email:
Date: Wednesday 13th Sep 2017
Time:12:00 PM - 01:00 PM
Location: Building 9, Hall 1- Room 2322
Refreshments: Light Lunch will be available at 11:45 am