|
|
|
Interactive out-of-core visualization of very large multiresolution time series data
|
|
|
| One of the major challenges facing scientists today is effective analysis of the explosion of data that is being generated by current scientific research technology. This is particularly a problem in the simulation of time-dependent magnetohydrodynamics (mhd) phenomena that produces enormous data sets of many hundreds of gigabytes. It is also the case that interactive visualization of the data is still one of the most effective techniques for gaining insight into the physical phenomenon. The huge size of the data, however, severely limits the ability to visualize the data in an effective interactive environment. A promising solution to this dilemma is to represent the data at multiple resolution levels - the coarser resolutions are used for large-scale overview visualizations and increasingly finer resolutions are accessed as the user zooms in for more limited range views.
This project builds on previous work by the computer science principal investigators in the areas of multiresolution representation of scientific data and multidimensional caching and prefetching.
We propose to develop a software framework and a prototype visualization environment that will support the interactive visualization of three-dimensional time-dependent mhd simulations using multiresolution and adaptive resolution data representations. An integral component of this research will be the use of very efficient I/O caching and prefetching techniques that are critical for achieving interactive performance. Although the conceptual framework applies to a very wide range of scientific data, the prototype visualization environment will focus on space science applications, particularly magnetohydrodynamics simulation and computational fluid dynamics. These areas represent two extremely important science research domains within the NASA research mission. The proposed work specifically addresses the AISR goal of providing better tools to enhance the scientists' ability to do research. |
|
|
