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Large Data Visualization with PAT: Programmable Analysis Tool

Large Data Visualization with PAT: Programmable Analysis Tool. Patrick Moran Data Analysis Group http://www.nas.nasa.gov/Groups/VisTech NASA Ames Research Center. Big Data. Garden of Grids. e.g., CART3D, High-wing transport M. Aftosmis. Previous Work. FAST Gel Prototype Analysis Tool.

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Large Data Visualization with PAT: Programmable Analysis Tool

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  1. Large Data Visualization with PAT: Programmable Analysis Tool Patrick Moran Data Analysis Group http://www.nas.nasa.gov/Groups/VisTech NASA Ames Research Center http://www.nas.nasa.gov/~pmoran

  2. Big Data http://www.nas.nasa.gov/~pmoran

  3. Garden of Grids • e.g., CART3D, High-wing transport • M. Aftosmis http://www.nas.nasa.gov/~pmoran

  4. Previous Work • FAST • Gel • Prototype Analysis Tool http://www.nas.nasa.gov/~pmoran

  5. Initial Components • Field Encapsulation Library (FEL2) • VisTech • graphics, direct-manipulation libraries http://www.nas.nasa.gov/~pmoran

  6. Learnings • C++ and templates • out-of-core paging (Ellsworth & Cox) • demand-driven philosophy • need more general data model • PLOT3D assumptions creep • software distribution issues http://www.nas.nasa.gov/~pmoran

  7. Current Approach • C++ components composed in Python • demand-driven philosophy • modular design • flexible field model • open source http://www.nas.nasa.gov/~pmoran

  8. Demand-Driven Evaluation • many techniques touch small % of data • often interested in derived values • time-series data accentuate issues http://www.nas.nasa.gov/~pmoran

  9. Field Model (FM) • C++, templated base (B) and phys (D) dim. • meshes with not necessarily manifold shapes • work with data in-place http://www.nas.nasa.gov/~pmoran

  10. Python • object-oriented • interactive, interpreted • extensible • active user community • many additional modules • open source http://www.nas.nasa.gov/~pmoran

  11. Programmable Analysis Tool • process capture, replay, programmability • modularity, dynamic module import • rapid prototyping http://www.nas.nasa.gov/~pmoran

  12. Design Challenges in PAT • direct interpreter window • maintaining consistent state • beginner users, advanced users • parallel execution, serial GUI • distributed visualization http://www.nas.nasa.gov/~pmoran

  13. SourceForge • provides CVS repository host • bug tracking, statistics, releases • home to several relevant projects: • Python • PyOpenGL • Numeric • Chromium (parallel rendering) http://www.nas.nasa.gov/~pmoran

  14. SourceForge StatisticsJuly 18, 2001 • number of projects: 23,737 • number of registered users: 214,561 • page views: 1,423,131 • files downloaded: 197,929 • fifth most active project: Python http://www.nas.nasa.gov/~pmoran

  15. FM on SourceForge • http://field-model.sourceforge.net/ http://www.nas.nasa.gov/~pmoran

  16. FM Module Organization • future candidates: CARD3D, Vis5D, CGNS, HDF5, PV3, TAG2D, TAG3D, etc. http://www.nas.nasa.gov/~pmoran

  17. Plans • continue to fill out FM classes • port paging to FM • port VisTech to FM • cultivate collaborators • more documentation http://www.nas.nasa.gov/~pmoran

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