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system architecture FOR INFORMATION-PROCESSING

INFORMATION PROCESSING & MANAGEMENT 1991年第4期27卷 347-369页

作者： OZKARAHAN, E PENN STATE UNIV SCH BUSINESSERIEPA 16563 USA

Text and fact retrieval efficiency can be achieved only within the framework of a computer system architecture embodying parallel search hardware, intelligent I/O architecture, and effective data partitioning and search strategies. Parallelism by itself is not a panacea. This paper presents the framework of the system architecture and the details of our intelligent I/O architecture called IMSA, data partitioning, and the RAP.3 integrated retrieval system. The RAP.3 system is driven by cluster searching for narrowing the search space. All media documents are converted to special relational formats and searched by relational database and text search commands. An integrated multimedia information system supported by object-oriented database methodology within the RAP.3 system architecture is included as a demonstration.

关键词： computer system architecture Parallel computers Database machines Multiprocessing Intelligent I/O architectures File partitioning Query Integrity constraint filtering Information retrieval Multimedia databases Conceptual modeling Object-oriented databases

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ON-THE-FLY AND BACKGROUND DATA FILTERING system FOR DATABASE architectureS

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NEW GENERATION COMPUTING 1987年第3期5卷 281-314页

作者： OZKARAHAN, EA PENALOZA, MA ARIZONA STATE UNIV DEPT COMP SCITEMPEAZ 85287

The discrepancy between the capacities of mass storage devices and main memory of computing systems is here to stay. The article introduces the concept of cost effective filtering with various options such as basic filter for selections, concurrent filtering extension for selections and projections, and concurrent filtering extension incorporating dynamic filtering for join, projection, and selection. After presenting these, detailed performance modeling of the filtering options is provided. Based on these performance models, a simulator is constructed and experiments for comparative filtering performance assessments are conducted. The results showed performance gains on the part of the systems employing filtering, especially in environments where high selectivities and concurrency are involved.

关键词： Data Filtering I/O systems Database architectures computer system architecture Performance Evaluation

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PERFORMANCE VALIDATION OF A FUNCTIONALLY DISTRIBUTED ENERGY MANAGEMENT architecture

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IEEE TRANSACTIONS ON POWER systemS 1992年第2期7卷 828-834页

作者： KUNUGI, M YOHDA, M HASEGAWA, T TAMURA, S WATANABE, H TOKYO ELECT POWER CO LTD TOKYOJAPAN

This paper proposes a functionally distributed computer system for an EMS and a large-scale SCADA system that features parallel processing and independence of subsystems in order to overcome the limitations of overly large and complex systems. Such a system would increase performance, flexibility of expansion, improve reliability and reduce costs. The feasibility of such a system was investigated and results are reported.

关键词： EMS SCADA system DISTRIBUTED system FUNCTIONALLY DISTRIBUTED system computer system architecture

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A Design for a List Merging Network

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IEEE Transactions on computers 1979年第6期C-28卷 406-413页

作者： Hollaar, Lee A. Department of Computer Science University of Illinois at Urbana-Champaign Urbana IL 61801 United States

In inverted file database systems (and in a number of other applications), much of the processing consists of merging two or more previously sorted lists based on a Boolean expression. Conventional general purpose computers are not well suited for this type of operation, with even well written programs utilizing less than 10 percent of the available memory capacity for actual processing of data. However, a low-cost special purpose backend processor can be used to efficiently handle the list merging operations, freeing the conventional processor for other uses. When merging more than two lists, it isgenerally necessary to divide the operation into a number of two-way merges, producing intermediate results, and later to use additional two-way merges to produce the final result. This results in the storing and later refetching of many long lists on a relatively slow mass storage system, greatly reducing the final data rate of the backend system. To minimize this, a number of simple processors can be combined to form a network capable of processing a complex Boolean expression of many sorted lists without producing any intermediate results. A possible design for a bit serial version of this list merging network is given. First, the basic operation of the network is discussed, followed by a description of the network and memory control systems. Finally, the design of the individual network processing elements is presented. Because of the limited number of pins relative to the number of gates and the regularity of the network, it is a good candidate for LSI technology. Copyright © 1979 by The Institute of Electrical and Electronics Engineers, Inc.

关键词： Backend processors binary tree networks computer system architecture inverted file databases nonnumeric processing pipelined networks sorted list merging special-purpose LSI processors system design

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PERFORMANCE VALIDATION OF A FUNCTIONALLY DISTRIBUTED ENERGY MANAGEMENT architecture

PERFORMANCE VALIDATION OF A FUNCTIONALLY DISTRIBUTED ENERGY ...

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17TH CONF ON POWER INDUSTRY computer APPLICATION ( PICA 91 )

作者： KUNUGI, M YOHDA, M TAMURA, S WATANABE, H HASEGAWA, T

ISBN: (纸本)0879426209

A functionally distributed computer system is proposed for an energy management system (EMS) and a large-scale SCADA system that features parallel processing and independence of subsystems in order to overcome the limitations of overly large and complex systems. Such a system would increase performance, flexibility of expansion, improve reliability and reduce costs. The performance feasibility of this architecture was confirmed by computer simulation and construction of a prototype system. system software for a functionally distributed EMS/SCADA system was developed.

关键词： EMS SCADA system DISTRIBUTED system FUNCTIONALLY DISTRIBUTED system computer system architecture

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Specialized Merge Processor Networks for Combining Sorted Lists

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ACM Transactions on Database systems (TODS) 1978年第3期3卷 272-284页

作者： Hollaar, Lee A. Department of Computer Science University of Illinois Urbana IL 61801 United States

In inverted file database systems, index lists consisting of pointers to items within the database are combined to form a list of items which potentially satisfy a user's query. This list merging is similar to the common data processing operation of combining two or more sorted input files to form a sorted output file, and generally represents a large percentage of the computer time used by the retrieval system. Unfortunately, a general purpose digital computer is better suited for complicated numeric processing rather than the simple combining of data. The overhead of adjusting and checking pointers, aligning data, and testing for completion of the operation overwhelm the processing of the data. A specialized processor can perform most of these overhead operations in parallel with the processing of the data, thereby offering speed increases by a factor from 10 to 100 over conventional computers, depending on whether a higher speed memory is used for storing the lists. These processors can also be combined into networks capable of directly forming the result of a complex expression, with another order of magnitude speed increase possible. The programming and operation of these processors and networks is discussed, and comparisons are made with the speed and efficiency of conventional general purpose computers. © 1978, ACM. All rights reserved.

关键词： backend processors binary tree networks computer system architecture full text retrieval systems inverted file databases nonnumeric processing pipelined networks sorted list merging

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Prospects of supercomputer engineering development (based on lecture materials from MPAMCS-2012 in Dubna, August 27, 2012.)

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Mathematical Models and computer Simulations 2014年第3期6卷 256-261页

作者： Latsis, A.O. Levin, V.K. Keldysh Institute of Applied Mathematics Russian Academy of Sciences Miusskaya pl. 4 Moscow 125047 Russian Federation Kvant Federal Research Institute 4th Likhachevskii per. 15 Moscow 125438 Russian Federation

Supercomputer performance has grown steadily and exponentially over the years, something that would have been impossible without periodic changes in their dominant architecture. Each of these has radically changed their use, in particular, in application programming. Today, with the appearance of heterogeneous hybrid-parallel architectures, the process of change in programming technologies has acquired a permanent character as the architecture has evolved. This poses a number of urgent problems for supercomputer applications. © 2014, Pleiades Publishing, Ltd.

关键词： Amdahl’s law application programming technology computer system architecture coprocessor accelerator hybrid computer node Moore’s law performance supercomputer

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OPERATIONAL CHARACTERISTICS OF A HARDWARE-BASED PATTERN MATCHER

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ACM TRANSACTIONS ON DATABASE systemS 1983年第1期8卷 15-40页

作者： HASKIN, RL HOLLAAR, LA UNIV UTAH DEPT COMP SCISALT LAKE CITYUT 84112

The design and operation of a new class of hardware-based pattern matchers, such as would be used in a backended database processor in a full-text or other retrieval system, is presented. This recognizer is based on a unique implementation technique for finite state automata consisting of partitioning the state table among a number of simple digital machines. It avoids the problems generally associated with implementing finite state machines, such as large state table memories, complex control mechanisms, and state encodings. Because it consists primarily of memory, with its high regularity and density, needs only limited static interconnections, and operates at a relatively low speed, it can be easily constructed using integrated circuit *** a brief discussion of other pattern-matching hardware, the structure and operation of the partitioned finite state automaton is given, along with a simplified discussion of how the state tables are partitioned. The expected performance of the resulting system and the state table partitioning programs is then discussed.

关键词： backend processors computer system architecture finite state automata full text retrieval systems text searching

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