Parallel Visualization of the Sloan Digital Sky Survey DR6

for Hewlett-Packard Scalabe Visualization Array

(March, 2008)

This is an interactive 3D walkthrough of the SDSS DR6 astrophysical data set implemented to run on the Hewlett-Packard Scalabe Visualization Array. This application uses static object-space distribution of the data among the rendering nodes and parallel sort-last compositing to get the final results.

 grid sdss

Introduction

The new generation astronomy digital archives cover large area of the sky at fine resolution in many wavelengths from ultraviolet through optical and infrared. For instance, one of these projects the Sloan Digital Sky Survey is creating a detailed catalog covering more than a quarter of the sky with images measured with five different filters. The size of the data set can be measured in terabytes. These archives enable astronomers to explore the data for their research.

However, virtually walking through these huge data sets also enables to visualize the beauty of the Universe and raises problems which can be interesting for people related to computer graphics. We present a technique for rendering large-scale scattered astrophysical data that has wide-spectrum photometric property.

Our method performs sort-last parallel particle rendering using hierarchical, static data distribution; and its performance scales up linearly by increasing the number of the rendering nodes. It also enables setting the color matching function in the rendering phase and as well as altering the distance calculation formulae that calculates spatial coordinates from the redshift - all interactively.

Documentation

File Description

 

Downloads

File Description
Cg-1.5.x86_64.rpmNVIDIA Cg library (RPM package for AMD64 HP-XC)
glew-1.3.4-1.x86_64.rpmOpenGL Extension Wrangler (RPM package for AMD64 HP-XC)
glew-devel-1.3.4-1.x86_64.rpmOpenGL Extension Wrangler headers (RPM package for AMD64 HP-XC)
devil-1.6.7-1.x86_64.rpmDevelopers' Image Library (RPM package for AMD64 HP-XC)
devil-devel-1.6.7-1.x86_64.rpmDevIL header (RPM package for AMD64 HP-XC)

 

Other downloads

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Screenshots

Walkthrough on a single workstation with 1% of the SDSS DR6