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Improvement of Job Scheduling for Automatic Chain Processing in Radio Occultation Context

Authors:
Lorenzo Mossucca
Olivier Terzo
Manuela Cucca
Riccardo Notarpietro

Keywords: radio occultation; grid computing; local scheduler; global scheduler; job scheduling.

Abstract:
The new Italian GPS receiver for Radio Occultation has been launched from Satish Dhawan Space Center (Sriharikota, India) on board of the Indian Remote Sensing OCEANSAT-2 satellite. The Italian Space Agency has established a set of Italian universities and research centers to develop the Web Science Grid, an infrastructure based on grid computing, that is implemented for the overall processing Radio Occultation chain. In consideration of the complexity of our scenario due to the modules involved and difficulties of geographically dispersed nodes, after a brief description of the algorithms adopted, that can be used to characterize the temperature, pressure and humidity, the paper presents an improvement of job scheduling in order to further decrease the elaboration time. Two applications to manage automatically the Radio Occultation data are described: Local and Global scheduler, one for worker nodes and one for the master node. Also the estimated processing time and actual processing are shown.

Pages: 26 to 31

Copyright: Copyright (c) IARIA, 2011

Publication date: May 22, 2011

Published in: conference

ISSN: 2308-4006

ISBN: 978-1-61208-133-5

Location: Venice/Mestre, Italy

Dates: from May 22, 2011 to May 27, 2011