UCT CS Research Document Archive

Acceleration of Automated HI Source Extraction

Badenhorst, Scott J., Sarah Blyth and Michelle M. Kuttel (2013) Acceleration of Automated HI Source Extraction. In Freidel , Doug , Eds. Proceedings Astronomical Data Analysis Software and Systems XXII, ASP Conference Series 475, pages 53-59, Champaign, IL, USA.

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We aim to enable fast automated extraction of neutral hydrogen (HI) sources from large survey data sets. This requires both handling the large files (>5 TB) to be produced by next-generation interferometers and acceleration of the source extraction algorithm. We develop an efficient multithreaded implementation of the A’Trous wavelet reconstruction algorithm, which we evaluate against the serial implementation in the DUCHAMP package. We also evaluate three memory management libraries (Mmap, Boost and Stxxl) that enable processing of data files too large to fit into main memory, to establish which provides the best performance.

EPrint Type:Conference Paper
Subjects:J Computer Applications: J.2 PHYSICAL SCIENCES AND ENGINEERING
ID Code:899
Deposited By:Kuttel, Michelle
Deposited On:28 October 2013