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

David Barr; Alastair Basden; Nigel Dipper; Noah Schwartz; Andy Vick; Hermine Schnetler

doi:10.1117/12.2055092

4 August 2014 Evaluation of the Xeon phi processor as a technology for the acceleration of real-time control in high-order adaptive optics systems

David Barr, Alastair Basden, Nigel Dipper, Noah Schwartz, Andy Vick, Hermine Schnetler

Author Affiliations +

Proceedings Volume 9148, Adaptive Optics Systems IV; 91484B (2014) https://doi.org/10.1117/12.2055092
Event: SPIE Astronomical Telescopes + Instrumentation, 2014, Montréal, Quebec, Canada

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.

Citation Download Citation

David Barr, Alastair Basden, Nigel Dipper, Noah Schwartz, Andy Vick, and Hermine Schnetler "Evaluation of the Xeon phi processor as a technology for the acceleration of real-time control in high-order adaptive optics systems", Proc. SPIE 9148, Adaptive Optics Systems IV, 91484B (4 August 2014); https://doi.org/10.1117/12.2055092

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