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Network Interface Multicast Protocols for Wormhole-based Networks of Workstations

Summary: Network Interface Multicast Protocols for
Wormhole-based Networks of Workstations
Cosimo Anglano a, Claudio Casetti b
Emilio Leonardi b
Fabio Neri b
aDipartimento di Informatica, Universita' del Piemonte Orientale, Alessandria,
bDipartimento di Elettronica, Politecnico di Torino, Torino, Italy
Wormhole-routing high-speed LANs (e.g. Myrinet), increasingly used to build high-
performance Network of Workstations, do not usually provide hardware support to
multicast communication, that must instead be implemented in software by send-
ing several point-to-point messages. Network Interface protocols allow an efficient
software implementation of multicast communication, but require flow control tech-
niques (to avoid buffer overflows) that may lead to a severe performance degra-
dation. In this paper we address the problem of designing reliable and efficient
Network Interface multicast protocols. We propose a flow control technique that
provides the basis for four multicast protocols, and we perform extensive simula-
tions to characterize the impact that various factors (such as network topology,
presence of unicast traffic, composition of multicast groups, etc.) have on their per-


Source: Anglano, Cosimo - Dipartimento di Informatica, UniversitÓ del Piemonte Orientale "A. Avogadro"


Collections: Computer Technologies and Information Sciences