Evaluating multiprocessor performance: an exercise in metamodeling

Article Abstract:

This paper points to the viability of metamodels in performance evaluation. A metamodel, in the sense it is used here, is a simple mathematical expression that describes a performance measure in terms of the system parameters, and is derived from experiments with a simulation model of the system. The system considered is a bus-sufficient multiprocessor, and the performance measure under focus is its processing efficiency. The process of metamodel development is illustrated to show that a reliable metamodel can be derived with relative ease. It is also argued that with sufficient care taken in selecting the form of the metamodel, it may be justifiable to use the metamodel beyond the experimental domain over which it is developed. Specifically, a metamodel is proposed for the processing efficiency of a multiprocessor system. It is shown to be a reasonably good approximation to the simulation model, and by extension, to the original system.

Simulation, Performance Measurement

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Elxsi to Offer Danford FXP Link with Apollo Workstations and MSC-NASTRAN for Its System 6400 Computer

Article Abstract:

Under the terms of contracts with Danford Corp. and MacNeal-Schwendler Corp. (MSC), Elxsi will link its System 6400 superminicomputer with the Apollo Computer graphics workstations and the MSC-NASTRAN structural analysis program. The Danford File Exchange Program (FXP) will enable information exchange between the System 6400 and Apollo's DOMAIN local area network (LAN) of graphics workstations. The FXP consists of two programs, one resident on the System 6400 and one resident on the LAN.

Contracts, Minicomputers, Structural analysis software, Telecommunications transmission technologies, Local area networks, LAN, Workstations, Software Packages, Data Communications Software, Manufacturers, Minicomputer, Graphics System, Cooperative Agreements, Data Communications, Danford, MacNeal Schwendler, ELXSI

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ELXSI, Manufacturer of 64-Bit Multiprocessor

Article Abstract:

The System 6400, from Elxsi, is a 64-bit general-purpose computer capable of a tenfold expansion without modification to user software. Up to five CPUs can be housed in the system's cabinet and up to 4,096 terminals or devices can be supported. Prices are from $420,000 for one processor up to $4 million for a ten processor system. A diagram illustrates the basic System 6400.

Evaluation, Product/Service Evaluation, Computer Systems, Over 32-Bit, Expandability, General-Purpose Computers, Elxsi System 6400

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