Angewandte Informatik und Software / Applied Computer by Gerhard Barth (auth.), Professor Dr. Heinz Schwärtzel (eds.)

By Gerhard Barth (auth.), Professor Dr. Heinz Schwärtzel (eds.)

0 e Neben der Entwicklung höchstintegrierter undefined, mit deren Hilfe höhere Funktionalität und Leistung bei kleinerem Volumen und geringeren Herstellungskosten ermöglicht wird, gewinnt die Forschung und Entwicklung im Bereich der software program stetig an Bedeutung. Schon heute übersteigt ihr wertmäßiger Anteil im Durchschnitt 50 % der Systemkosten. Das erklärt auch die weltweiten Anstrengungen auf diesem Gebiet. Führende Universitäten, Großforschungsinstitute und die Industrie haben in den letzten Jahren vielversprechende Ergebnisse erzielt und damit den Weg für eine ganze new release neuer Produkte geebnet. Aus Anlaß des 10-jährigen Bestehens der Hauptabteilung Informatik und software program in der Zentralabteilung Forschung und Entwicklung der Siemens AG wird ein internationales Symposium veranstaltet, dessen Themenbereiche - Kommunikation, Parallelrechner, Systemdesign, Künstliche Intelligenz und Signalverarbeitung - exemplarischen Einblick in Arbeiten und Kooperationen zwischen Wissenschaft und Industrie geben. Der vorliegende Tagungsband faßt die auf dem Symposium präsentierten Beiträge renommierter Wissenschaftler amerikanischer, österreichischer und deutscher Institute sowie foreign anerkannter Mitarbeiter der Siemens AG und der Siemens Nixdorf Informationssysteme AG zusammen.

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Extra resources for Angewandte Informatik und Software / Applied Computer Science and Software: Wissenschaft für die Praxisi / Turning Theory into Practice

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2 Funktionsschichtung eines Netzes In der Schichtung nach Bild 1 (nicht zu verwechseln mit den "layers" des OSIArchitekturmodells) wird eine grobe Einteilung der Netzfunktionen vorgenommen. Die unterste Schicht ist den Transportfunktionen vorbehalten sowie den zugehorigen Grunddiensten. Als Grunddiest sei hier das Herstellen einer Verbindung mit gewahlter Ubertragungskapazitat von Teilnehmer A zu B verstanden. Man unterscheidet (in englischer Bezeichnung) Bearer Services, 48 die lediglich Obertragungskapazitat zur Verfugung stell en, und Teleservices, bei denen durch Standards sichergestellt ist, daB sich die Endgerate der Verbindung (bzw.

The user interface to the RAP is through a Sun CPU board which is plugged into the same VME bus, or using NFS to access a daemon running on that CPU from over the Ethernet. Ring communication architectures can deliver high bandwidth with minimal hardware overhead by using simple hardware semaphores to implement a pipelined data flow. The RAP's pipeline communication ring has been implemented with Programmable Gate Arrays. These single 175-pin devices contain most of the inter-node wiring complexity of a communication pipeline stage, yet they are fast enough to implement short hand-shake protocols in a single RAP cycle.

There is also good progress on the intercommunication requirements. The Scalable Coherent Interface project [AGJR90j is the best known of the current efforts toward uniform gigabit internal communications and we are exploring this possibility among others. It appears that it will be possible to construct a very powerful connectionist network simulator at moderate cost in money and effort. When we have computers that are highly efficient at connectionist computation, this might seriously change our view of conventional parallelism.

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