Teleconference 2019-05-01

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Attendees: Ken Moreland (SNL), Rob Maynard (Kitware), Matt Larsen (LLNL), Nick Davis (SNL), Hank Childs (UO), Abhishek Yenpure (UO)

ECP Updates

ECP deliverable updates


  • [MS-19/08] Point Movement 2
    • Done except user's guide.


  • [MS-19/09] Path Geometry
    • Ramping up
    • Some of the functionality is already there
    • Probably need to add a poly-line cell type
  • [MS-20/01] Lightweight Cell Library
    • Been doing some changes on the interface to the VTK-m cell library.
    • Most of the underlying library is ready.
    • Almost ready.
    • Still need to implement VTK-m data around it.
  • [MS-20/02] Specialized Data Models
    • Dave P and Sujin talked about how to roll in some generalized extruded meshes.
  • [MS-20/03] Feature-Sensitive Surface Norm
    • Bumped up CUDA version so that we have our required CUDA 9
    • Can get back to actual algorithm
  • [MS-20/04] VTK-m Release 3
    • On track
    • Probably June would be a good time for a release.
  • [MS-20/05] Cell Metrics
    • Brent and Daniel are working on an MR.
    • Steven Walton is getting engaged on this.
    • Initial MR will only be about 1/3 of the metrics.
    • Will advance after that.
  • [MS-20/06] Contouring
    • Will model the problem after triangulation. Have different contouring for each cell type.
    • Ollie looking into VTK implementation and flying edge paper.
  • [MS-20/07] Advanced Flow Algorithms
    • Merged in fix to do double precision correctly.
    • Going to spend this time getting the infrastructure rock solid.
    • Oregon will push on FTLE.
    • ORNL will work on stream surfaces and Poincare plot
    • Might not get all of them, but should at least succeed at one.
    • Also getting distributed memory parallelization working.

Rountable notes

Upcoming events:

We should try to collect some ECP data so that as we do reporting we can quickly generate relevant images. It would be great if we could also share across ALPINE and other vis projects.

  • Terry Turton has collected some stuff from LANL. Not sure if can be sent out.
    • She might have a list of distributed data in different places


Slides from DOECGF panel. (Highlights of VTK-m at scale we can send to Jim.)

Rob will take over meeting May 29 to talk to Thrust folks.

Sujin had been cleaning up memory leaks.

Removed DeviceAdapterError. It is no longer needed now that we have a default device adapter.

Sent some bugs to clang compiler team about issues compiler VTK-m.

Berk working on a library with the goal of loading VTK-m datasets from ADIOS. The idea is to create a library to define various types of schemas to various VTK-m data sets. Making progress. Can currently load an unstructured grid with a single cell type.

Matt has been working on generalized distributed memory interface.

Matt has been compiling things on Summit. Been struggling with the XLC compiler. Altered the VTK-m SPACK package to always set the NVCC native compiler.