Process Mapping for MPI Collective Communications

Abstract

It is an important problem to map virtual parallel processes to physical processors (or cores) in an optimized way to get scalable performance due to non-uniform communication cost in modern parallel computers. Existing work uses profile-guided approaches to optimize mapping schemes to minimize the cost of point-to-point communications automatically. However, these approaches cannot deal with collective communications and may get sub-optimal mappings for applications with collective communications.

Publication
Euro-Par 2009 Parallel Processing
Jidong Zhai
Jidong Zhai
Associate Professor
(特别研究员、博士生导师)
Wenguang Chen
Wenguang Chen
Professor
(教授)