Parallel Computing for the Computed-Tomography Imaging Spectrometer

This software computes the tomographic reconstruction of spatial-spectral data from raw detector images of the Com - puted-Tomography Imaging Spec trom - eter (CTIS), which enables transient-level, multi-spectral imaging by capturing spatial and spectral information in a single snapshot. The CTIS can be used for surveying planetary landscapes through spectral imaging. It can also be used for battlefield surveillance and the spectral imaging of live tissues for disease detection.

A Message Passing Interface Library (MPI) is used to parallelize the original serial version of the code without modifying its initial structure. By parallelizing the code, a speedup of up to 20 is reached by using 32 processors. The software does not use any thirdparty libraries that require licenses. It is written in Fortran and MPI, and the storage of matrix elements is efficient, thus reducing memory requirements.

This work was done by Seungwon Lee of Caltech for NASA’s Jet Propulsion Laboratory.

This software is available for commercial licensing. Please contact Karina Edmonds of the California Institute of Technology at (626) 395-2322. Refer to NPO-45831.

This Brief includes a Technical Support Package (TSP).

Parallel Computing for the Computed- Tomography Imaging Spectrometer (reference NPO-45831) is currently available for download from the TSP library.

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