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Center for Computational Visualization University of Texas, Austin

Molecular Graphics Laboratory The Scripps Research Institute (TSRI). Engineering Research Center Mississippi State University. Visualization and Graphics Research Group University of California, Davis. Center for Computational Visualization University of Texas, Austin. Motivation.

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Center for Computational Visualization University of Texas, Austin

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  1. Molecular Graphics LaboratoryThe Scripps Research Institute (TSRI) Engineering Research CenterMississippi State University Visualization and Graphics Research GroupUniversity of California, Davis Center for Computational Visualization University of Texas, Austin

  2. Motivation • Enable existing resources • Handle large data • Support distributed environments • Multi-discipline

  3. Motivation: Large Data • There will always be large data • Even though graphics hardware improves • Numerical simulation resources are increasing • Instrument fidelity is increasing • Volumes and time series lead to large data • Recent Example: • Orion nebula for AMNH ~2.5TB • Emission Nebula for AMNH ~6TB • ENZO 1024^3 Cosmology Simulation ~12TB

  4. Layered Toolkit Architecture Application Expression Tree Toolkit Mesh Toolkit Data Grid Toolkit Data Management File Format Handling SRB, ADR, etc.

  5. Mesh • Manage a pagedmesh (array-like) • An N-dimensional grid of values • Spatial data & time-series • Arbitrary data content • Multiple file formats • Layered atop local I/O and SRB

  6. Application Expression Tree Toolkit Mesh Toolkit Data Grid Toolkit Data Management File Format Handling SRB, ADR, etc. Data Grid Toolkit Managing Data Grids • Manage a paged data grid (array-like) • An N-dimensional grid of cells • Spatial data & time-series • Arbitrary cell data content • Handle larger-than-core data • Transparently pages data in/out • Support from ADR & DataCutter • Compressed data (disk & memory)

  7. Application Expression Tree Toolkit Mesh Toolkit Data Grid Toolkit Data Management File Format Handling SRB, ADR, etc. Data Grid Toolkit Pre-fetching Intelligently 5 3 9 1 7 8 6 4 2 • Random access (slow) • Get/set cells in any order • Structured access (faster) • Get/set cells in a pre-defined order • Data-order access (fastest) • Get/set cells in the data’s storage order 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9

  8. Application Expression Tree Toolkit Mesh Toolkit Data Grid Toolkit Data Management File Format Handling SRB, ADR, etc. Data Grid Toolkit Paging Intelligently • Neighborhood-aware paging • Page in nearby cells in N dimensions • Support convolution filtering, rendering, marching-cubes, ... Filter window Current center cell 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Keep neighboring cells paged-in as well

  9. Application Expression Tree Toolkit Mesh Toolkit Data Grid Toolkit Data Management File Format Handling SRB,ADR, etc. Mesh Toolkit Using Coordinate Systems • Bind a coordinate system to a data grid • Euclidean, cylindrical, spherical, time-series, ... • Uniform, structured, unstructured • Handle coordinate system-based operations • Resampling with interpolation • Lazy-evaluation • Multiple file format handlers

  10. VISTA Layer • Volume rendering layer • Modular feature set • Specializing in large high resolution out of core rendering

  11. Applications VISTA Mesh Paged Array SRB & Local I/O VISTA Layer • Builds on mesh layer • I/O transparent • File formats transparent • Paging • Applications & Services layered on top • CORBA render server • Batch renderer • Interactive tools

  12. VISTA: Features • Perspective ray casting • Multiple volume support • Scalar data support using transfer functions • Color data, with opacity, or opacity and emissivity • Modular: other algorithms,renderers

  13. VISTA Rendering Server • Built on VISTA toolkit • Multiple versions for interoperability: Sockets, CORBA, Grid CORBA Interactive Graphics Clients Remote VISTA Server Sockets

  14. Renderer & Server • Built on VISTA toolkit • Command line arguments for batch rendering • Uses CORBA for communication and interoperability

  15. Mesh Viewer • Interactive multi-mesh viewer • Built atop Mesh & VISTA Toolkits • Uses standard 3D graphics hardware • Single and multiple volume viewing Interactive Rendered

  16. Mesh Viewer • Point clouds • Built on mesh toolkit • Local Renderer • Java ray caster from VISTAtoolkit • Remote renderer • Render server from VISTAtoolkit Interactive Rendered

  17. VGrid Portal Visualization Services Grid Grid Farm SRB Archive VGrid Gallery SVT Grid Services Workstation Alley

  18. Archive, Jobs, Task

  19. Back-end Systems

  20. Future Plans • Personalized Pages • Personalized Templates • Improved Job Submission Pages • Automated Web Gallery Generation • Improve Archive to SRB integration. • External SRB links in Archive • Remote file transfer • Support for DAKS Matrix • Support for APST users

  21. Cancer Center Visualization Images Animations Movies Visualization Expertise UCSD Cancer Center Software Development Research Intern Computational Scientists Medical Expertise Visualization Tools 1 Research Scientist Supercomputers Latest Microscopy Tools Shared Staff Cancer Research Scientists SDSC Cancer Expertise

  22. Example Visualizations

  23. Sample Visualizations Universe Simulations UCSD Cancer Center

  24. Astronomical Visualization Visualization of An Emission Nebulae from 3 Terabytes of Simulation Data Credits: American Museum of Natural History Dave Nadeau SDSC Erik Engquist SDSC

  25. Alpha Project Partners Center for Computational Visualization (CCV)University of Texas, Austin Visualization and Interactive Systems (VIS) GroupUniversity of California, Irvine • Molecular Graphics LaboratoryThe Scripps Research Institute (TSRI) Scientific Visualization GroupSan Diego Supercomputer Center (SDSC)University of California, San Diego (UCSD) Visualization and Graphics Research GroupUniversity of California, Davis

  26. Web Sites • http://visservices.npaci.edu • http://vistools.npaci.edu • http://vis.sdsc.edu

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