Development of Data Processing Software in Supercomputer for Observed Solar Oscillation Data

The objective of the plan is to develop an optimum software which processes and analyzes the observed solar oscillation data from the observation of the research project 'The Study of Solar Interial Structure' supported by NSC. To process the data, Spherical Harmonic Decomposition and Fast Fourier Transformation are used to transfer the observed data from the function of time and space to the function of spherical harmonic mode number (l,m) and frequency (ω). Other preprocessing steps are Data Merging of the consequently observed data from six global network observation sites, Flat Field of the images, Image Registration between images, Total Brightness Noralization, and Limb Darkening Correction. The preprocessing steps require a large amount of time in data I/O, while the function transformation step requires a tremendous amount of CPU time. If the data (266 GByte/month) acquired are to be processed in a short time in order to keep an internationally leading academic position, optimizing processing softwares in supercomputer is the only choice. At the present stage, the preprocessing programs are developed and tested in a SUN workstation other than in a supercomputer because the raw data have to be download from an EXABYTE 8mm tape drive.

Project ID:PA8306-1010
External Project ID:NSC83-0208-M182-002