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A First Implementation of In-Transit Buffers on Myrinet GM Software S. Coll, J. Flich, M. P. Malumbres, P. Lopez, J. Duato and F.J. Mora
 

Summary: A First Implementation of In-Transit Buffers on Myrinet GM Software£
S. Coll, J. Flich, M. P. Malumbres, P. L´opez, J. Duato and F.J. Mora
Universidad Polit´ecnica de Valencia
Camino de Vera, 14, 46071­Valencia, Spain
scoll@gap.upv.es
Abstract
Clusters of workstations (COWs) are becoming
increasingly popular as a cost-effective alternative to
parallel computers. In these systems, the interconnection
network connects hosts using irregular topologies,
providing the wiring flexibility, scalability, and incremental
expansion capability required in this environment. Myrinet
is the most popular network used to build COWs. It uses
source routing with the up*/down* routing algorithm. In
previous papers we proposed the In-Transit Buffer (ITB)
mechanism that improves network performance by allowing
minimal routing, balancing network traffic, and reducing
network contention. The mechanism is based on ejecting
packets at some intermediate hosts and later re-injecting
them into the network. Moreover, the ITB mechanism does

  

Source: Arnau, Salvador Coll - Departamento de Ingeniería Electrónica, Universitat Politècnica de València

 

Collections: Engineering