Using the multistage cube network topology in parallel supercomputers
Article Abstract:
The multistage cube network topology offers near-optimal price-performance, decentralized routing control, and layout area for the interconnection of processors and memories in parallel processing supercomputers. The design of large-scale parallel processing supercomputers with 64 to 64,000 processing nodes require a cost-effective yet high-performance interconnection scheme to provide the needed communications between processors. The multistage cube requires a reasonable number of components, supports partitioning, offers multiple simultaneous data paths, and supports a variety of parallel architectures. The latter include single instruction stream-multiple data stream, multiple instruction stream-multiple data stream, and integrated and partitioned variant designs. Performance of such systems, several example multistage cube networks, and single-stage variants are also discussed.
Publication Name: Proceedings of the IEEE
Subject: Electronics
ISSN: 0018-9219
Year: 1989
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Scattering from a perfectly conducting cube
Article Abstract:
A modified version of the hybrid iterative method (HIM) is developed for the determination of the bistatic radar cross-section (RCS) of a perfectly conducting cube. The technique inserts an initial approximation of the surface currents of each of the cube's faces into a magnetic-field integral equation (MFIE), with successive iterations of the process to convergence. The resulting current information is evaluated to find the RCS of the cube. The advantage of this technique is that the HIM and the MFIE are capable of completely describing, respectively, all and the nature of the scattering by a body. Details of the development, underlying equations, and application of the new RCS analysis technique are described.
Publication Name: Proceedings of the IEEE
Subject: Electronics
ISSN: 0018-9219
Year: 1989
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Overview of selected hybrid methods in radiating system analysis
Article Abstract:
In many antenna simulation situations the performance of the antenna must be gauged by taking into account the platform or surrounding materials. The use of the Method of Moments (MM) to treat a portion of the antenna simulation problem, and another method to account for the remaining simulation are examined. The MM/Green's function techniques add another matrix to the MM matrix. The additional matrix is derived by another method and describes the other portion of the problem without increasing the order of the MM matrix. This type of hybrid technique uses electric fields and is called a field-based hybrid technique. Two other hybrid techniques considered current-based systems are described.
Publication Name: Proceedings of the IEEE
Subject: Electronics
ISSN: 0018-9219
Year: 1992
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