ISC'14

June 22–26, 2014
Leipzig, Germany

Presentation Details

 
Name: Optimizing Haemodynamics Simulation for Supercomputers: Coalesced Communication & Weighted Decomposition
 
Time: Wednesday, June 25, 2014
12:00 pm - 12:30 pm
 
Room:   Hall 5
CCL - Congress Center Leipzig
 
Speaker:   Derek Groen, UCL
 
Abstract:   We present two new techniques for high-performance parallel scientific software. The coalesced communication design pattern allows for a structured way to improve the communication performance by coalescencing multiple communication needs with two communication management components. We apply the design pattern to several simulations of a lattice-Boltzmann blood flow solver with streaming visualisation which engenders a reduction in the communication overhead of approximately 40%. In addition we present a weighted decomposition technique to improve the calculation load balance in lattice-Boltzmann simulation, and test its effect on the scalability and communication overhead.