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Large-scale shared-memory multiprocessor systems are the current trend in high-performance multiprocessor systems, which are often divided into many nodes. These nodes contain a small number of processors connected by an internal bus. In this kind of system, load imbalance often occurs and can degrade the performance. This paper presents a cost-effective load balancing algorithm, which performs load...
The high latency of memory accesses is one of the factors that contributes to reduce the performance of current vector supercomputers. The conflicts that can occur in the memory modules plus the collisions in the interconnection network in case of multiprocessors make the execution time of applications increase significantly. In this work we propose a memory access method for vector uniprocessors...
Decentralized detection (DD) is an interesting alternative to classical centralized detection (CD) when communicational/computational constraints play an important role in the design of the decision system. The authors investigate the feasibility of decentralized techniques for realistic situations, and their relative performance with CD when the Neyman-Pearson criterion is chosen, where relatively...
An attempt is made to enhance speech degraded by added noise by exploiting the periodic nature of voiced speech. A modification of the adaptive comb filter is employed for this purpose. Problems which may arise when using the periodicity of the speech for enhancement include significant distortion caused by comb filtering a time-varying waveform (called temporal smearing) as well as the variation...
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