Design and Evaluation of Nemesis, a Scalable, Low-Latency, Message-Passing Communication Subsystem

This paper presents a new low-level communication subsystem called Nemesis. Nemesis has been designed and implemented to be scalable and efficient both in the intranode communication context using shared-memory and in the internode communication case using high-performance networks and is natively multimethod-enabled. Nemesis has been integrated in MPICH2 as a CH3 channel and delivers better performance than other dedicated communication channels in MPICH2. Furthermore, the resulting MPICH2 architecture outperforms other MPI implementations in point-to-point benchmarks.

• Type: Conference
• Year: 2006
• Where: CCGRID
• Authors: Darius Buntinas, Guillaume Mercier, William Gropp
• Keywords: CCGRID 2006, Cluster Computing, Communication, Intranode Communication Context, Subsystem Called Nemesis