1. Large Data Visualization on Distributed Memory Multi-GPU Clusters Thomas Fogal, Hank Childs, Siddharth Shankar, Jens Krüger, R. Daniel Bergeron, Philip Hatcher

2. Growth of Data

3. Parallel Volume Rendering

4. Need lots of cores to render at acceptable speeds Volume Rendering Scalability Figure: Howison, Bethel, Childs, MPI-hybrid Parallelism for Volume Rendering on Large, Multi-core Systems, EGPGV 2010

5. Longhorn

6. Performance

7. Brick Size NVIDIA Quadro FX 5800's

8. Dynamic Load Balancing

9. Load Balancing

10. "Adaptive mesh refinement" data some spatial regions have higher-resolution coarse/fine boundaries: sampling uneven load distribution Future Work - AMR

11. High resolution images Load balancing Additional grid types (curvilinear) Decoupled processing and rendering? Future Work

12. Funding VACET CIBC C-SAFE MMCI (Saarland University) Resources TACC ORNL Open source communities: GLEW, Mesa, VisIt Anonymous reviewers You! Thanks

13. Questions?