this paper presents the design and evaluation of high-radix parallel dividers for high-speed signal and data processingapplications. the presented divider designs are based on the unified high-radix division algorith...
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this paper presents the design and evaluation of high-radix parallel dividers for high-speed signal and data processingapplications. the presented divider designs are based on the unified high-radix division algorithm proposed by the authors. By prescaling the operands and converting the representation of each partial remainder into partially non-redundant representation, the quotient digit can be obtained directly from the integer part of the partial remainder without using quotient digit selection tables. Performance evaluation shows that the proposed radix-4 and radix-8 divider architectures achieve faster computation with less hardware complexity, in comparison withthe binary counterparts. this paper also presents the experimental fabrication of the radix-4 divider in 0.35 /spl mu/m CMOS technology.
We describe the implementation underlying an environment for distributed computing that uses the concept of well-known paradigms. the main advantage of paradigm oriented distributed computing is that the user only nee...
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We describe the implementation underlying an environment for distributed computing that uses the concept of well-known paradigms. the main advantage of paradigm oriented distributed computing is that the user only needs to specify application-specific sequential code, while the underlying infrastructure takes care of the parallelization and distribution. the main features of the proposed approach, called PODC, which differentiate it from other approaches, are the following: (1) it is intended for loosely-coupled network environments, not specialized multiprocessors; (2) it is based on an infrastructure of mobile agents; (3) it supports programming in C, rather than a functional or special-purpose language, and (4) it provides a Web based interactive graphics interface through which programs are constructed, invoked, and monitored. the three paradigms presently supported in PODC are the bag-of-tasks, the branch-and-bound and genetic programming. We describe their implementation and performance within the mobile agent based PODC environment.
the international Workshop on Embedded HPC Systems and applications (EHPC) is a forum for the presentation and discussion of approaches, research findings, and experiences in the applications of High Performance Compu...
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A method is proposed that use a security server to assure more secure communication without degrading the performance on the distributed Object-oriented Network Architecture in the distributedprocessing Environment (...
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Tailorability is generally regarded as a key property of groupware systems due to the dynamics and diversity of cooperative work. this article investigates the use of software components as a generic architectural con...
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Safety-critical systems typically operate in unpredictable environments. Requirements for safety and reliability are in conflict withthose for real-time responsiveness. Due to environmental needs there is no static t...
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In this paper, we propose system support for building adaptive migratory continuous media applications in distributed real-time environments. In future distributed computing environments, various objects in homes and ...
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In a real-rime system, tasks are constrained by global end-to-end (E-T-E) deadlines. In order to cater for high task schedulability, these deadlines must be distributed over component tasks in an intelligent way. In t...
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ISBN:
(纸本)0769501435
In a real-rime system, tasks are constrained by global end-to-end (E-T-E) deadlines. In order to cater for high task schedulability, these deadlines must be distributed over component tasks in an intelligent way. In this paper, we present an improved version of the slicing technique and extend it to heterogeneous distributed hard real-time systems. the salient feature of the new technique is that it utilizes adaptive metrics for assigning local task deadlines. Using experimental results rue show that the new technique exhibits superior performance with respect to the success ratio of a heuristic scheduling algorithm. For smaller systems, the new adaptive metric outperforms a previously-proposed adaptive metric by 300%, and existing non-adaptive metrics by more than an order of magnitude. In addition, the new technique is shown to be extremely robust for various system configurations.
this paper presents language features for High Performance Fortran (HPF) to specify non-local access patterns of distributed arrays, called halos, and to control the communication associated withthese non-local acces...
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