Publications Details

Data Services for Visualization and Analysis - ASC Level II Milestone (7186)

Templet Jr., Gary J.; Glickman, Matthew R.; Kordenbrock, Todd H.; Levy, Scott L.; Lofstead, Gerald F.; Mauldin, Jeff; Otahal, Thomas J.; Ulmer, Craig D.; Widener, Patrick W.; Oldfield, Ron A.

A new in transit Data Service is presented and compared to the traditional file-based workflow and the newly refactored in situ Catalyst workflow. Each workflow is enabled by the IOSS mesh interface equipped with data management layers for Exodus and CGNS (file-based), Catalyst (in situ), and FAODEL (in transit). FAODEL is a distributed object store that can transmit data across MPI allocations. Catalyst is a Para View-based visualization capability developed as part of the CSSE Data Services effort. The workflows considered here take SPARC data into Catalyst for visualization post-processing. Although still in unoptimized form, we show that the in transit approach is a viable alternative to file-based and in situ workflows and offers several advantages to both simulation and post-processing developers. Since IOSS is a mature interface with wide adoption across Sandia and externally, each workflow can be reconfigured to use different simulations that generate mesh data and post-processing tools that consume it.