This paper discusses Nimrod, a tool for performing parametrised simulations over networks of loosely coupled workstations. Using Nimrod the user interactively generates a parametrised experiment. Nimrod then controls ...
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ISBN:
(纸本)9780818670886
This paper discusses Nimrod, a tool for performing parametrised simulations over networks of loosely coupled workstations. Using Nimrod the user interactively generates a parametrised experiment. Nimrod then controls the distribution of jobs to machines and the collection of results. A simple graphical user interface which is built for each application allows the user to view the simulation in terms of their problem domain. The current version of Nimrod is implemented above OSF DCE and runs on DEC Alpha and IBM RS6000 workstations (including a 22 node SP2). Two different case studies are discussed as an illustration of the utility of the system.
In the detailed routing for VLSI standard cell layout design, the over-the-cell channel routing, which utilizes the over-the-cell legion as the routing region, has been proposed. In this design method, after determini...
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In the detailed routing for VLSI standard cell layout design, the over-the-cell channel routing, which utilizes the over-the-cell legion as the routing region, has been proposed. In this design method, after determining the net assignment to each channel in the global routing step, the track assignment both in channel and on over-the-cell regions is performed by an over-the-cell channel router. However, conventional global routing algorithms do not assume over-the-cell channel routing but conventional channel routing, Therefore, the minimization of channel density does not always successfully lead to the minimization of the final channel height. This paper presents a new global Touting method for standard cell layouts to determine global routes for each net in both channel and over-the-cell regions simultaneously. The standard cell layout design system GLORIA based on the proposed algorithm is developed, and the experimental results compared with the conventional global routing method that performs the over-the-cell channel routing after global-routing with TimberWolf-SC4.2c are reported. Experimental results showed that the proposed routing algorithm can route about 18.4 percent fewer number of tracks than the conventional routing method, and the effectiveness of the proposed method is shown. The experimental results of applying the proposed method to the three-layer routing layout model also are presented.
This paper presents a unified framework for representing highly-complex knowledge in a database as a new paradigm for handling large and complex information in an easy and efficient manner. The framework provides a da...
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The authors discuss issues and problems related to processing rules in temporal active databases. They assume an append-only database where changes can occur to data, meta-data, rules, and constraints. They focus on t...
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The authors discuss issues and problems related to processing rules in temporal active databases. They assume an append-only database where changes can occur to data, meta-data, rules, and constraints. They focus on the effect of retroactive and proactive updates in such an environment.< >
Proposes a simple paradigm for constructing heuristics for the static assignment of parallel programs onto asynchronous, distributed memory, multiprocessor architectures. The proposed paradigm involves capturing the d...
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Proposes a simple paradigm for constructing heuristics for the static assignment of parallel programs onto asynchronous, distributed memory, multiprocessor architectures. The proposed paradigm involves capturing the dominant computation and communication components of an application and using this relatively simpler program representation to determine an assignment. Thus, the mapping problem is reduced from its most general form to a simpler form which often has optimal solutions.< >
Some of the most challenging problems in science and engineering are being addressed by the integration of computation and science, a research ?eld known as computational science. Computational science plays a vital r...
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ISBN:
(数字)9783540448631
ISBN:
(纸本)9783540401964
Some of the most challenging problems in science and engineering are being addressed by the integration of computation and science, a research ?eld known as computational science. Computational science plays a vital role in fundamental advances in biology, physics, chemistry, astronomy, and a host of other disciplines. This is through the coordination of computation, data management, access to instrumentation, knowledge synthesis, and the use of new devices. It has an impact on researchers and practitioners in the sciences and beyond. The sheer size of many challenges in computational science dictates the use of supercomputing, parallel and distri- ted processing, grid-based processing, advanced visualization and sophisticated algorithms. At the dawn of the 21st century the series of International Conferences on Computational Science (ICCS) was initiated with a ?rst meeting in May 2001 in San Francisco. The success of that meeting motivated the organization of the - cond meeting held in Amsterdam April 21–24, 2002, where over 500 participants pushed the research ?eld further. The International Conference on Computational Science 2003 (ICCS 2003) is the follow-up to these earlier conferences. ICCS 2003 is unique, in that it was a single event held at two di?erent sites almost opposite each other on the globe – Melbourne, Australia and St. Petersburg, Russian Federation. The conference ran on the same dates at both locations and all the presented work was published in a single set of proceedings, which you hold in your hands right now.
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