Designing Efficient Network Interfaces For System Area Networks

Rzymianowicz, Lars

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URN: urn:nbn:de:bsz:180-madoc-547
Document Type: Doctoral dissertation
Year of publication: 2002
The title of a journal, publication series: None
Publishing house: Universität Mannheim
Evaluator: Brüning, Ulrich
Date of oral examination: 28 August 2002
Publication language: English
Institution: School of Business Informatics and Mathematics > Rechnerarchitektur (Brüning -2008)
Subject: 004 Computer science, internet
Classification: CCS: C.1.2 C.2.1 ,
Subject headings (SWD): Netzwerkmodell , Cluster , Supercomputer , Chip
Individual keywords (German): Netzwerkinterface
Keywords (English): SAN , Interconnect
Abstract: The network is the key component of a Cluster of Workstations/PCs. Its performance, measured in terms of bandwidth and latency, has a great impact on the overall system performance. It quickly became clear that traditional WAN/LAN technology is not too well suited for interconnecting powerful nodes into a cluster. Their poor performance too often slows down communication-intensive applications. This observation led to the birth of a new class of networks called System Area Networks (SAN). The ATOLL network introduces a new optimized architecture for SANs. On a single chip, not one but four network interfaces (NI) have been implemented, together with an on-chip 4x4 full-duplex switch and four link interfaces. This unique "Network on a Chip" architecture is best suited for interconnecting SMP nodes, where multiple CPUs are given an exclusive NI and do not have to share a single interface. It also removes the need for any additional switching hardware, since the four byte-wide full-duplex links can be connected by cables with neighbor nodes in an arbitrary network topology.
Translation of the title: null (German)
Translation of the abstract: Das Netzwerk ist die Hauptkomponente eines Workstation/PC Clusters. Dessen Bandbreite und Latenz hat einen grossen Einfluss auf die Systemleistung. Traditionelle WAN/LAN Technologie ist für Cluster nur bedingt geeignet, da die schwache Kommunikationsleistung Applikationen ausbremsen kann. Die neue Klasse der System Area Networks hat das Ziel, Applikationen die benötigte Leistung zur Verfügung zu stellen. Das ATOLL Netzwerk ist eine neue SAN Architektur. Insgesamt 4 Interfaces sind auf einem einzigen Chip untergebracht. Zusammen mit einem 4x4 Switch und 4 Links ist diese "Netzwerk auf einem Chip" Architektur bestens für SMP Cluster geeignet. Externe Switches werden nicht benötigt, da die 4 Links direkt verbunden werden können. (German)
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