Computational models and resource allocation for supercomputers
Article Abstract:
Effective use of supercomputer parallel and/or vector computing capabilities and resources, resource allocation, requires programming strategies tailored to a particular supercomputer's computational model. Supercomputers are divisible into several architectures: vector or array processor SIMD (single instruction multiple data) units; tightly, closely or loosely coupled MIMD (multiple instruction multiple data) machines; and MSIMD hybrids. The goals in optimal programming of these systems are to arrange the programs to keep all computing resources busy and to minimize time lost to overhead. The resources include processors, pipelines, functional units, registers and primary memories. The allocation strategies are implemented by compilers, operating systems or programmers, and maximize correctness and concurrent performance. SIMD and MIMD resource allocation strategies are discussed.
Publication Name: Proceedings of the IEEE
Subject: Electronics
ISSN: 0018-9219
Year: 1989
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Hypercube supercomputers
Article Abstract:
Hypercube-based multiprocessor computers are 'massively' parallel systems with typically low-cost microprocessor nodes connected in a hypercube topology, a generalization of a 3-dimensional cube to higher dimensions. The topology ensures that nodes are no more than 'n' links apart, where n is the number of dimensions of the hypercube. This minimizes interprocessor delays and optimizes performance for computationally complex scientific applications. A summary of the history of hypercube development prefaces a discussion of current implementations. The graph properties of the hypercube topology have specific impacts on supercomputer architecture, communications and programming. Hypercube computers have a wide variety of applications, of which image processing and the execution of branch-and-bound algorithms for heuristic searches through large solution spaces are discussed.
Publication Name: Proceedings of the IEEE
Subject: Electronics
ISSN: 0018-9219
Year: 1989
User Contributions:
Comment about this article or add new information about this topic:
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