Los Alamos National LaboratoryInformation Science and Technology Institute (ISTI)
Implementing and fostering collaborative research, workforce and program development, and technical exchange

Seminar Series

The IS&T seminars on various information science and technology topics are held every Wednesday from 3-4 PM at the CNLS Conference Room unless otherwise noted.


  • Institute Director
  • Stephan Eidenbenz
  • (505) 667-3742
  • Email
  • Institute Deputy Director
  • Kary Myers
  • (505) 606-1455
  • Email
  • Professional Staff Assistant
  • Nickole Aguilar Garcia
  • (505) 665-3048
  • Email

To schedule a speaker please contact Nickole Garcia.

To subscribe to the IS&T seminar announcements please use the Program Announcement tool (use win domain password to login)/ Select the "NSEC - Information Science and Technology Institute" to receive announcements.

January 23, 2018: Philippe Pebay, NexGen Analytics

Efficient Visualization and Analysis of Large-Scale, Tree-Based, Adaptive Mesh Refinement Simulations with Rectilinear Geometry


The goal of this presentation is to explain our adaptive approach for the visualization and analysis of large-scale, parallel, tree-based adaptive mesh refinement (AMR) scientific simulations, using optimized data structures and customized traversal objects, taking advantage of the intrinsic structure of tree-based AMR grids. When compared to those obtained with standard approaches for the visualization of such datasets, our results indicate a gain of at least 80% in terms of memory footprint with better-quality rendering, while retaining similar execution speed. Furthermore, our innovative approach allows for further acceleration of the rendering of 2-dimensional AMR grids, hereby solving the problem posed by the loss of interactivity that occurs when dealing with large and/or deeply refined meshes. This presentation will be illustrated with several examples and performance assessment results.

Host: John Patchett, 505-665-1110, patchett@lanl.gov

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