1. Amit Chourasia Visualization Scientist San Diego Supercomputer Center Presented at : Cyberinfrastructure Internship Experiences for Graduate Students Spring Orientation Workshop – April 23-27, 2007 Visualization Services

2. Mission Statement Advance Science through the creation and dissemination of high-quality explanatory visualizations. Advance Visualization through creation of improved production tools and processes.

3. Compute Resources at SDSC Machine# ProcsMemoryDiskPeak Perf. Datastar (p-series) 25287 TB112 TB15.6 TFlops Blue-Gene- Data 61441.5 TB19.5 TB17.2 TFlops Teragrid (Itanium2) 5121 TB39 TB3.1 TFlops

4. Storage Resources at SDSC MachineMemoryDiskPeak Perf. HPSS (tape) 256 GB18 PB0.3 TFlops Sam QFS (tape) 288 GB39 TB0.15 TFlops

5. Large? Data? What kind of data? Simulations of earthquakes, CFD, astrophysics, molecular modeling, etc Floating point How large? Time varying and multivariate (1000’s of timesteps) Usually 10’s of TB >1024x1024x1024 floats

6. Problems How to verify and validate ? How to analyze ? How to gain scientific insight ? How to share information among experts and non-experts ?

7. Understanding Data Large amount of numbers don’t make much sense to humans Visual information can encode large amount of numbers to gain insight Low Bandwidth High Bandwidth

8. Scientific Visualization Short Def. – is the presentation of data graphically as a means of gaining understanding and insight about science. “Visual Representation and Abstraction of Scientific Data”

9. Seismic - TeraShake Simulation TeraShake 2.1 Comparison of TS1.2 – TS1.3 Short and simple Web Collab: SCEC

10. Seismic - SCEC Viz portal Collab: SCEC

11. Seismic - Puente Hills Simulation Movie Web Collab: SCEC

12. Seismic - Recreation of 1906 San Francisco Earthquake North Bound South Bound Collab: USGS

13. Climate Simulation River Flow 3D River Flow Top Collab: UCSD LLNL

14. CFD Simulation Collab: GaTech

15. Enzo – Universe Simulation Matter Density Dark Matter Density Temperature Collab: UCSD LLNL

16. Molecular Modelling Movie Collab: NREL

17. Real Data?

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

19. The Cellular Imaging Gateway Web Portal for Cellular Imaging. Image generation. Animation creation. Analysis Functions. Distributed processing. Cluster integration. Remote operation

20. Core Features Complete access through standard web browser. Data set uploads from the microscope and desktop. Submit jobs to remote clusters. Review results as arrive. Notification of results Monitor results anywhere.

21. Seismic – 7 Story Building Original video Match Check Match Top Bottom Combined Perspective npr Roof npr Site 3d model Collab: NEES

22. Other Work

23. Example Imagery James R. Feramisco -Digital Imaging Resource Leader

24. Data Issues Data Formats Data Translation Data transfer and replication between archival and active file systems Data larger than memory available

25. Viz Issues Domain knowledge Multivariate data representation Temporal coherence Precision Loss (compression,etc) Interaction vs batch visualization Perceptual Issues Personal Bias (author & viewer)

26. Tools we use to Visualize Vista (SDSC/NPACI) – Batch Volume renderer Mesh Viewer (SDSC/NPACI) – Interactive Volume Renderer Autodesk’s Maya – 3D animation software Adobe’s suite (After Effects, Photoshop, Illustrator) Other things that work

27. Installed Tools Paraview VISTA GIMP GnuPlot ImageMagick RasMol Visit VTK Tecplot – in progress.

28. Does Viz work? Collab: SCEC

29. Does Viz work? Collab: SCEC

30. “Information is infinite” “Information overload” Joseph Kielman Science Advisor Dept. of Homeland Security Can’t win Can’t break even Can’t get out of the game Can Visualization help? Think Petascale Data Analysis

31. Why Is Visualization Unique? Fixed resolution and speed output device. No matter how much simulation data is produced the visual presentation is limited to a finite resolution and speed. Can play with that a little – IMAX, 60 fps but practically fixed.

32. Web Sites http://visservices.sdsc.edu http://www.syncenter.org http://visservices.sdsc.edu/projects http://visservices.sdsc.edu/software http://visservices.sdsc.edu/software/installed. php

33. Thanks for your patience ? - Web: http://visservices.sdsc.edu/ http://visservices.sdsc.edu/