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Proceedings Paper

Evaluation of the Xeon phi processor as a technology for the acceleration of real-time control in high-order adaptive optics systems
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Paper Abstract

We present wavefront reconstruction acceleration of high-order AO systems using an Intel Xeon Phi processor. The Xeon Phi is a coprocessor providing many integrated cores and designed for accelerating compute intensive, numerical codes. Unlike other accelerator technologies, it allows virtually unchanged C/C++ to be recompiled to run on the Xeon Phi, giving the potential of making development, upgrade and maintenance faster and less complex. We benchmark the Xeon Phi in the context of AO real-time control by running a matrix vector multiply (MVM) algorithm. We investigate variability in execution time and demonstrate a substantial speed-up in loop frequency. We examine the integration of a Xeon Phi into an existing RTC system and show that performance improvements can be achieved with limited development effort.

Paper Details

Date Published: 4 August 2014
PDF: 9 pages
Proc. SPIE 9148, Adaptive Optics Systems IV, 91484B (4 August 2014); doi: 10.1117/12.2055092
Show Author Affiliations
David Barr, UK Astronomy Technology Ctr. (United Kingdom)
Heriot-Watt Univ. (United Kingdom)
Alastair Basden, Durham Univ. (United Kingdom)
Nigel Dipper, Durham Univ. (United Kingdom)
Noah Schwartz, UK Astronomy Technology Ctr. (United Kingdom)
Andy Vick, UK Astronomy Technology Ctr. (United Kingdom)
Hermine Schnetler, UK Astronomy Technology Ctr. (United Kingdom)


Published in SPIE Proceedings Vol. 9148:
Adaptive Optics Systems IV
Enrico Marchetti; Laird M. Close; Jean-Pierre Véran, Editor(s)

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