IMAGER: A Parallel Interface to Spectral Line Processing

Doug Roberts
University of Illinois/NCSA

Dick Crutcher
University of Illinois

Session ID: T11.03   Type: oral

Abstract:

We report on the development and use of the IMAGER system at NCSA. IMAGER is an interface to parallel implementation of imaging and deconvolution tasks of the Software Development Environment (SDE) of the NRAO. The interface is based on the Miriad interface of the BIMA array and it allows for interactive and batch operation. The parallelization is carried out by distributing independent spectral line channels across multiple processors. The use of this system on the NCSA Power Challenge machine is presented. For most problems, the speed-up with number of processors is nearly linear. We present results from our use of IMAGER on a data reduction of multiple-pointing BIMA observations of molecular gas around the ``Sickle'' near the Galactic center. We also report on the general use and timing results of this system at NCSA.





Patrick P. Murphy
Wed Sep 11 09:50:17 EDT 1996