Worshop on Personal Computer Based Networks of Workstations Giovanni Chiola, DISI, University of Genoa, Italy Gianni, Conte, University of Parma, Italy

Parallel and Distributed Processing

Volume 1388 of the series Lecture Notes in Computer Science pp 534-548


Optimal communication performance on fast ethernet with GAMMA

  • Giuseppe CiaccioAffiliated withDISI, Università di Genova

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The current prototype of the Genoa Active Message MAchine (GAMMA) is a low-overhead, Active Messages-based inter-process communication layer implemented mainly at kernel level in the Linux Operating System. It runs on a pool of low-cost Pentium-based Personal Computers (PCs) networked by a low-cost 100base-TX Ethernet hub to form a low-cost message-passing parallel platform. In this paper we describe in detail how GAMMA could achieve unprecedented communication performance (less than 13 μs one-way user-to-user latency time and up to 98% of the communication throughput of the raw interconnection hardware) on such a kind of low-cost parallel architecture.


Active messages Fast Ethernet Inter-process communication Network of workstations Parallel processing