Mr. Juan Carlos Guzman Profile

Juan Carlos Guzman

SKA-Low Head of Computing and Software at SKAO/CSIRO

SPIE Involvement:

Conference Program Committee | Editor | Author

Area of Expertise:

Distributed Control Systems , SCADA , Software Architecture , Astronomical Telescopes and Instrumentation , Real-time Systems , Software Development Management

I am a Research Team Leader at CSIRO Astronomy and Space Science Division in Australia. My current role is to Lead the Software Development of the Australian SKA Pathfinder (ASKAP) Telescope Operating System (TOS). The TOS is in charge of Observation Management and overall Monitoring and Control of the Telescope. ASKAP is a new radio telescope currently under construction at the Murchison Radio-astronomy Observatory (MRO) in the Mid West region of Western Australia. It will be made up of 36 identical antennas, each 12 metres in diameter, working together as a single instrument. Incorporating novel receiver technologies and leading-edge ICT systems, ASKAP will be one of the world’s premier radio telescopes and will help to answer fundamental questions about our Universe. I've been working in this role since 2008.

Before joining CSIRO I worked for many years as a Software Engineer at the European Southern Observatory (ESO) La Silla Observatory. At ESO I developed monitoring and control software for the 3.6m Optical Telescope and several Instruments including HARPS, FEROS and TIMMI2.

Proceedings Article | 6 July 2018 Presentation + Paper

SKA telescope manager: a status update

Alan Bridger, Yashwant Gupta, Subhrojyoti Chaudhuri, Matteo Di Carlo, Gerhard Le Roux, Swaminathan Natarajan, Riccardo Smareglia, Mangesh Patil, Domingos Barbosa, Lize van den Heever, Mauro Dolci, Valentina Alberti, Ray Brederode, Joao Paulo Barraca, Dzianis Bartashevich, Miguel Bergano, Giorgio Brajnik, Matteo Canzari, Aditya Dange, Juan Carlos Guzman, Giovanna Jerse, Amruta Khanvilkar, Pamela Klaassen, Cristina Knapic, Jitendra Kodikar, Vikas Kumthekar, Dalmiro Maia, Vivek Mohile, Bruno Morgado, Snehal Nakave, Mark Nicol, Alan O'Brien, Niruj Ramanujam, Jyotin Ranpura, Steven Reed, Vinod Sathe, Nuno Silva, Paul Swart, Franco Tinarelli, Vatsal Trivedi, Lochan Babani, Snehal Valame, Sonja Vrcic, Stewart Williams, Yogesh Wadadekar

Proceedings Volume 10707, 1070703 (2018) https://doi.org/10.1117/12.2313649

KEYWORDS: Telescopes, Observatories, Control systems, Computer architecture, Astronomy, Human-machine interfaces, Data archive systems, Logic

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Proceedings Article | 6 July 2018 Presentation + Paper

Challenges of real-time processing in HPC environments: the ASKAP experience

Eric Bastholm, Juan Guzman, Maxim Voronkov, Paulus Lahur

Proceedings Volume 10707, 107070J (2018) https://doi.org/10.1117/12.2313137

KEYWORDS: Data processing, Radio astronomy, Astronomy, Space telescopes, Space operations, Radio telescopes, Observatories, Magdalena Ridge Observatory

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Proceedings Article | 8 August 2016 Paper

Status report of the end-to-end ASKAP software system: towards early science operations

Juan Carlos Guzman, Jessica Chapman, Malte Marquarding, Matthew Whiting

Proceedings Volume 9913, 991311 (2016) https://doi.org/10.1117/12.2232513

KEYWORDS: Antennas, Data archive systems, Telescopes, Visibility, Calibration, Data processing, Data modeling, Software development, Image processing, Space telescopes

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The Australian SKA Pathfinder (ASKAP) is a novel centimetre radio synthesis telescope currently in the commissioning phase and located in the midwest region of Western Australia. It comprises of 36 x 12 m diameter reflector antennas each equipped with state-of-the-art and award winning Phased Array Feeds (PAF) technology. The PAFs provide a wide, 30 square degree field-of-view by forming up to 36 separate dual-polarisation beams at once. This results in a high data rate: 70 TB of correlated visibilities in an 8-hour observation, requiring custom-written, high-performance software running in dedicated High Performance Computing (HPC) facilities. The first six antennas equipped with first-generation PAF technology (Mark I), named the Boolardy Engineering Test Array (BETA) have been in use since 2014 as a platform to test PAF calibration and imaging techniques, and along the way it has been producing some great science results. Commissioning of the ASKAP Array Release 1, that is the first six antennas with second-generation PAFs (Mark II) is currently under way. An integral part of the instrument is the Central Processor platform hosted at the Pawsey Supercomputing Centre in Perth, which executes custom-written software pipelines, designed specifically to meet the ASKAP imaging requirements of wide field of view and high dynamic range. There are three key hardware components of the Central Processor: The ingest nodes (16 x node cluster), the fast temporary storage (1 PB Lustre file system) and the processing supercomputer (200 TFlop system). This High-Performance Computing (HPC) platform is managed and supported by the Pawsey support team. Due to the limited amount of data generated by BETA and the first ASKAP Array Release, the Central Processor platform has been running in a more “traditional” or user-interactive mode. But this is about to change: integration and verification of the online ingest pipeline starts in early 2016, which is required to support the full 300 MHz bandwidth for Array Release 1; followed by the deployment of the real-time data processing components. In addition to the Central Processor, the first production release of the CSIRO ASKAP Science Data Archive (CASDA) has also been deployed in one of the Pawsey Supercomputing Centre facilities and it is integrated to the end-to-end ASKAP data flow system. This paper describes the current status of the “end-to-end” data flow software system from preparing observations to data acquisition, processing and archiving; and the challenges of integrating an HPC facility as a key part of the instrument. It also shares some lessons learned since the start of integration activities and the challenges ahead in preparation for the start of the Early Science program.

Proceedings Article | 26 July 2016 Paper

SKA Telescope Manager (TM): status and architecture overview

Swaminathan Natarajan, Domingos Barbosa, Joao Barraca, Alan Bridger, Subhrojyoti Choudhury, Matteo Di Carlo, Mauro Dolci, Yashwant Gupta, Juan Guzman, Lize Van den Heever, Gerhard Le Roux, Mark Nicol, Mangesh Patil, Riccardo Smareglia, Paul Swart, Roger Thompson, Sonja Vrcic, Stewart Williams

Proceedings Volume 9913, 991302 (2016) https://doi.org/10.1117/12.2232492

KEYWORDS: Telescopes, Control systems, Receivers, Data modeling, Data archive systems, Signal processing, Diagnostics, Standards development, Logic, Astronomical telescopes

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Proceedings Article | 18 July 2014 Paper

The cost of developing and maintain the monitoring and control software of large ground-based telescopes

Juan Carlos Guzman, Gianluca Chiozzi, Alan Bridger, Jorge Ibsen

Proceedings Volume 9152, 91521P (2014) https://doi.org/10.1117/12.2055921

KEYWORDS: Software development, Telescopes, Prototyping, Astronomy, Software engineering, Space telescopes, Control systems, Software frameworks, Calibration, Operating systems

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Proceedings Article | 19 July 2010 Paper

The Australian SKA Pathfinder (ASKAP) software architecture

Juan Guzman, Ben Humphreys

Proceedings Volume 7740, 77401J (2010) https://doi.org/10.1117/12.856962

KEYWORDS: Telescopes, Control systems, Data modeling, Computer architecture, Telecommunications, Data archive systems, Software development, Data storage, Software frameworks, Data communications

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Proceedings Article | 30 September 2004 Paper

The exoplanet hunter HARPS: performance and first results

Gero Rupprecht, Francesco Pepe, Michel Mayor, Didier Queloz, Francois Bouchy, Gerardo Avila, Willy Benz, Jean-Loup Bertaux, X. Bonfils, Th. Dall, Bernard Delabre, Hans Dekker, Wolfgang Eckert, Michel Fleury, Alain Gilliotte, Domingo Gojak, Juan Guzman, Dominique Kohler, Jean-Louis Lizon, G. Lo Curto, Antonio Longinotti, Christophe Lovis, Denis Megevand, Luca Pasquini, Javier Reyes, Jean-Pierre Sivan, Danuta Sosnowska, R. Soto, Stephane Udry, Arno Van Kesteren, Luc Weber, Ueli Weilenmann

Proceedings Volume 5492, (2004) https://doi.org/10.1117/12.551267

KEYWORDS: Stars, Thorium, Spectrographs, Exoplanets, Calibration, Planets, Velocity measurements, Signal to noise ratio, Charge-coupled devices, Observatories

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Proceedings Article | 7 March 2003 Paper

Performance verification of HARPS: first laboratory results

Francesco Pepe, Gero Rupprecht, Gerardo Avila, Andrea Balestra, Francois Bouchy, Cyril Cavadore, Wolfgang Eckert, Michel Fleury, Alain Gillotte, Domingo Gojak, Juan Guzman, Dominique Kohler, Jean-Luis Lizon, Michel Mayor, Denis Megevand, Didier Queloz, Danuta Sosnowska, Stephane Udry, Ueli Weilenmann

Proceedings Volume 4841, (2003) https://doi.org/10.1117/12.460777

KEYWORDS: Spectrographs, Telescopes, Sensors, Calibration, Observatories, Lanthanum, Iodine cells, Charge-coupled devices, Cameras, Manufacturing

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