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Given by Scott Klasky at Poster Session SC98 Orlando on November 10-12 1998. Foils prepared January 31 99
Outside Index
Summary of Material
| Klasky's Poster Session at SC98 |
| SV2 Features |
| Java2D (promise for fast 2D rendering/animations). |
| Java3D (promise for fast 3D graphics on all platforms). |
| Voluminous data server (compression schemes to allow for fast data transfers). |
| Multiplexing (efficient collaboration data server along with TANGO) |
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SV2 Features
OBJECTIVE
Scivis->SV2
SV2 System Architecture
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USE JNI to incorporate quality visualization code.
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SV2: Visualization
Outside Index
Summary of Material
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| Collaborative Scientific Data Visualization Framework |
| Ki, Klasky, Fox |
| Syracuse University (NPAC) |
| scott@npac.syr.edu |
| See me at the CRPC booth for a live demo |
| See me at the NPACI/Alliance booth for a live demo |
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| Java2D (promise for fast 2D rendering/animations). |
| Java3D (promise for fast 3D graphics on all platforms). |
| Voluminous data server (compression schemes to allow for fast data transfers). |
| Multiplexing (efficient collaboration data server along with TANGO) |
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| Our goal of this collaborative system is to use recent computing technology, Java, to build a multi-user collaborative scientific design and analysis environments which can run on all platforms. |
| The objective was to develop the scientific software environment where multiple users can create, share, manipulate, analyze, simulate, and visualize complex data sets over a heterogeneous network of PC's, workstations and supercomputers. |
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| Our SV2 research and design is based on the success of Scivis. Scivis is a collaborative scientific data visualization package written in Java. |
| Scivis allows users to visualize their data, which is piped in via sockets. |
| Although Scivis has been widely used in the "Binary Black Hole Grand Challenge", it still had major limitations. |
| One of the most common complaints against Scivis was that users could only collaborate with other Scivis users. |
| SV2 is being designed such that users of Scivis3d (a Java3D version of Scivis), AVS, & VRML can collaborate together. |
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| Local Client |
| Client Manager |
| Data Viewer 1 |
| Data Viewer 2 |
| Local Client |
| Client Manager |
| Data Viewer 1 |
| Data Viewer 2 |
| Collaboration |
| Tool |
| Geometry Engine |
| Filter Engine |
| SV2 Server |
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| Sample Screen Dump |
| Raytracing |
| Rotations of raytracing |
| Surface & Contour Plots |
| Isosurfaces |
| X,y animations |
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| The Stanford Volpack routines for raytracing. (written in C). |
Isosurface routines with
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| Users can customize routines for their own use. |
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| Future Work |
| Filter/Map creator, users can hook filters together, and create new API's for those maps. |
| Compression |
| Downsize |
| Smooth |
| Isosurface |
| decimation |
| Mysv3d(name,time,g3d,n) |
| Downsize |
| VTK:raytrace |
| Compression |
| Myray(name,time,g3d,n) |
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| SV2-Client Window |
| Data is sent from simulations, or files, to the SV2 server. |
| Data from the SV2 server is stored (in memory, and on disk). |
Data file headers are sent to SV2-clients.
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| To keep support for Scivis alive, we allow users to pipe data directly to SV2 clients. |
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For enhanced interactively, the image should be refined progressively as the data comes in from the remote server.
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In order to store and transmit large scale data sets, compression schemes have to be utilized.
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| SV2: Issues for rendering |
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With upcoming network computers, the capabilities of a local client might be reduced significantly.
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| Java-3D allows programmers to specify geometry using a binary geometry compression format. This compression format is used with APIs, and can be used both as a run-time in-memory format for describing geometry, as well as a storage and network format. |
| SV2: More issues |
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Once Data-headers are on the client, users can select different methods to visualize the data.
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| Clients request data from the server, the server performs the appropriate filter(s), and then sends back the geometry (or image, or actual x,(y,(z)) data) back to the client. |
| The client (Scivis3D,VRML(not yet implemented)) visualizes the data. |