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Identifier uch.csd.msc//1997moraiti
Title Συγκριτική Μελέτη Δικτύων Διασύνθεσης ATM και Wormhole με Χρήση Ιχνών Πραγματικής Κίνησης
Alternative Title Trace-driven Simulation of ATM and Wormhole networks
Creator Moraiti, Marina
Abstract Interconnection network is a vital component of a parallel machine and is often the limiting factor in the performance of several parallel applications. This is the reason why its performance evaluation has been a widely researched t opic over the past years. However, unlike the other subsystems, interconnection netwo rk design and analysis has rarely used the knowledge of workloads generated by para llel applications. Instead, synthetic workloads have been used by most studies. In our work, we first develop a framework for characterizing the communication properties of parallel applications. For our study, we use ten parallel applicat ions that have been executed on IBM SP2 parallel machine of Maui High Performance Com puting Center. Message generation frequency, spatial distribution of messages and message lengt h are the three attributes that quantify any communication. Communication analysis shows that synthetic workloads do not capture the behavio r of real applications. Moreover, realistic workloads are used to measure and compare the performance of ATM networks with credit based flow control and wormhole. Measurements have been made for three network topologies, butterfly, mesh and hypercube respectively. Results show that by using lanes network latency can be reduced. However, with respect to overall execution time, the performance benefit is negligible, due to the complex interaction between a parallel architecture and an applicatio n.
Issue date 1997-11-01
Date available 1998-04-0
Collection   School/Department--School of Sciences and Engineering--Department of Computer Science--Post-graduate theses
  Type of Work--Post-graduate theses
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