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Proceedings Paper

Parallel-computing architecture for JWST wavefront-sensing and integrated modeling
Author(s): J. Scott Smith; Bruce H. Dean; Alexander Rilee; Thomas P. Zielinski
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Paper Abstract

The James Webb Space Telescope (JWST) is the successor to the Hubble Space Telescope and will be NASA's premier observatory of the next decade. Image-based wavefront sensing (phase retrieval) is the primary method for ground testing and on-orbit commissioning. For ground tests at NASA's Goddard Space Flight Center (GSFC) and Johnson Space Center (JSC), near-real-time analysis is critical for ensuring that pass/fail criteria are met before completion of a specific test. To address this need we have developed a computational architecture for image processing and phase retrieval. Using commercially available off-the-shelf hardware and software, we have designed, implemented, and tested a solution for high-speed parallel computing. The architecture is a hybrid solution utilizing both CPUs and GPUs and exploiting the unique advantages of each. Discussions are presented of the architecture, performance, and current limitations.

Paper Details

Date Published: 10 November 2011
PDF: 7 pages
Proc. SPIE 8336, Integrated Modeling of Complex Optomechanical Systems, 83360Y (10 November 2011); doi: 10.1117/12.920199
Show Author Affiliations
J. Scott Smith, NASA Goddard Space Flight Ctr. (United States)
Bruce H. Dean, NASA Goddard Space Flight Ctr. (United States)
Alexander Rilee, NASA Goddard Space Flight Ctr. (United States)
Thomas P. Zielinski, NASA Goddard Space Flight Ctr. (United States)

Published in SPIE Proceedings Vol. 8336:
Integrated Modeling of Complex Optomechanical Systems
Torben Andersen; Anita Enmark, Editor(s)

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