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Proceedings Paper

The compute and control for adaptive optics (CACAO) real-time control software package
Author(s): Olivier Guyon; Arnaud Sevin; Damien Gratadour; Julien Bernard; Hatem Ltaief; Dalal Sukkari; Sylvain Cetre; Nour Skaf; Julien Lozi; Frantz Martinache; Christophe Clergeon; Barnaby Norris; Alison Wong; Jared Males
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Paper Abstract

The compute and control for adaptive optics (cacao) package is an open-source modular software environment for real-time control of modern adaptive optics system. By leveraging many-core CPU and GPU hardware, it can scale up to meet the demanding computing requirements of current and future high frame rate, high actuator count adaptive optics (AO) systems. cacao’s modular design enables both simple/barebone operation, and complex full-featured AO control systems. cacao’s design is centered on data streams that hold real-time data in shared memory along with a synchronization mechanism for computing processes. Users and programmers can add additional features by coding modules that interact with cacao’s data stream format. We describe cacao’s architecture and its design approach. We show that accurate timing knowledge is key to many of cacao’s advanced operation modes. We discuss current and future development priorities, including support for machine learning to provide real-time optimization of complex AO systems.

Paper Details

Date Published: 17 July 2018
PDF: 12 pages
Proc. SPIE 10703, Adaptive Optics Systems VI, 107031E (17 July 2018);
Show Author Affiliations
Olivier Guyon, Astrobiology Ctr., National Institutes of Natural Sciences (Japan)
Steward Observatory, The Univ. of Arizona (United States)
Subaru Telescope, National Astronomical Observatory of Japan (United States)
Arnaud Sevin, Observatoire de Paris (France)
Damien Gratadour, Observatoire de Paris (France)
Julien Bernard, Observatoire de Paris (France)
Hatem Ltaief, King Abdullah Univ. of Science and Technology (Saudi Arabia)
Dalal Sukkari, King Abdullah Univ. of Science and Technology (Saudi Arabia)
Sylvain Cetre, W. M. Keck Observatory (United States)
Nour Skaf, Subaru Telescope, National Astronomical Observatory of Japan (United States)
Julien Lozi, Subaru Telescope, National Astronomical Observatory of Japan (United States)
Frantz Martinache, Observatoire de la Côte d'Azur (France)
Christophe Clergeon, Subaru Telescope, National Astronomical Observatory of Japan (United States)
Barnaby Norris, The Univ. of Sydney (Australia)
Alison Wong, The Univ. of Sydney (Australia)
Jared Males, Steward Observatory, The Univ. of Arizona (United States)


Published in SPIE Proceedings Vol. 10703:
Adaptive Optics Systems VI
Laird M. Close; Laura Schreiber; Dirk Schmidt, Editor(s)

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