Adding Low-Cost Hardware Barrier Support to Small Commodity Clusters

The performance of the barrier operation can be crucial for many parallel codes. Especially distributed shared memory systems have to synchronize frequently to ensure the proper ordering of memory accesses. The barrier operation is often performed on top of point-to-point messages and the best algorithm scales with O(log2P

• Type: Conference
• Year: 2006
• Where: ARCS
• Authors: Torsten Hoefler, Torsten Mehlan, Frank Mietke, Wolfgang Rehm
• Keywords: ARCS 2006, Barrier Operation, Distributed Shared Memory, Open MPI Framework, Software Engineering