Performance Issues of Decompositions

Performance Issues of Decompositions

• Interaction with load balancing (matrix factor example)
• Use of scaling behavior to identify problems
  • fixed time suggests a poor decomposition (e.g.., slab in 3-d, line in 2-d)
• Topologies with corners
  • 9-point, 2-d stencil trick
  • Another form of aggregation

Previous slide

Next slide

Back to the first slide

View Graphic Version

show relation to performance model