Live Webcast 15th Annual Charm++ Workshop

-->

PPL/Charm++ at SC17

An Evaluative Study on the Effects of Contention on Message Latencies in Large Supercomputers
Workshop on Large Scale Parallel Processing at IPDPS (LSPP) 2009
Publication Type: Talk
Repository URL:
Summary
Significant theoretical research was done on interconnect topologies and topology aware mapping for parallel computers in the 80s. With the deployment of virtual cut-through, wormhole routing and faster interconnects, message latencies reduced and research in the area died down. This talk presents a study showing that with the emergence of very large supercomputers, typically connected as a 3D torus or mesh, topology effects have become important again. It presents an evaluative study on the effect of contention on message latencies on torus and mesh networks.
TextRef
People
Research Areas