Parallel MOPEX: Computing Mosaics of Large-Area Spitzer Surveys on a Cluster ComputerReport as inadecuate




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Scientific Programming - Volume 15 2007, Issue 2, Pages 75-81



Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA

CACI International Inc., Lanham, MD 20706, USA

Received 22 June 2007; Accepted 22 June 2007

Copyright © 2007 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The Spitzer Science Center-s MOPEX software is a part of the Spitzer Space Telescope-s operational pipeline that enables detection of cosmic ray collisions with the detector array, masking of the corrupted pixels due to these collisions, subsequent mosaicking of image fields, and extraction of point sources to create catalogs of celestial objects. This paper reports on our experiences in parallelizing the parts of MOPEX related to cosmic ray rejection and mosaicking on a 1,024-processor cluster computer at NASA-s Jet Propulsion Laboratory. The architecture and performance of the new Parallel MOPEX software are described. This work was done in order to rapidly mosaic the IRAC shallow survey data, covering a region of the sky observed with one of Spitzer-s infrared instruments for the study of galaxy clusters, large-scale structure, and brown dwarfs.





Author: Joseph C. Jacob, Peter Eisenhardt, and David Makovoz

Source: https://www.hindawi.com/



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