Optimizing a conjugate gradient solver with non-blocking collective operations

This paper presents a case study about the applicability and usage of non blocking collective operations. These operations provide the ability to overlap communication with computation and to avoid unnecessary synchronization. We introduce our NBC library, a portable

• Type: Journal
• Year: 2007
• Where: PC
• Authors: Torsten Hoefler, Peter Gottschling, Andrew Lumsdaine, Wolfgang Rehm
• Keywords: Case Study, Collective Operations, Management, PC 2007, Unnecessary Synchronization