IDP — A Main Storage Based Vector Database Processor —

Kojima, Keiji; Torii, S.; Yoshizumi, Seiichi

doi:10.1007/978-1-4613-1679-4_4

Cited by 10 publications

(1 citation statement)

References 1 publication

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“…The former approach, including filter processors and sorting processors, is effective in decreasing the I/O load of a single disk. Several commercial products of this type, such as RINDA [17], GRE0[7], and IDP [12], have been developed as extensions to mainframes. On the other hand, parallel processing systems can utilize multiple disks at a time, increasing effective bandwidth of the secondary storage subsystems as a whole.…”

Section: Introductionmentioning

confidence: 99%

Implementation and Evaluation of the Bucket Flattening Omega Network of the Parallel Relational Database Server SDC-II

Tamura

1997

Database Systems for Advanced Applications '97

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This paper presents the implementation and performance evaluation of the Bucket Flattening OmegaNetwork of the SDC-II, the Super Database Computer II. The SDC-II is a highly parallel relational database server, which consists of eight data processing modules interconnected by two networks. Parallelism in the parallel relational database processing on the shared nothing architecture would suffer from skewed data distribution and collisions in the interconnection networks. The network of the SDC-II was designed to ofer an architectural support of the Bucket Spreading hash join algorithm, which enables the system to have linear performance scalability even with skewed data distributions. The additional functionality introduced into the network can generate a flat bucket distribution, which is essential to the algorithm, while providing almost conflict free routing. Each switching unit of the network is implemented on an FPGA chip, and its performance is evaluated to compare with an implementation without hardware szlpport. The evaluation results show that the eflective bandwidth of the latter implementation degrades to almost half of the ideal bandwidth, while little degradation is observed with the hardware support during all-toall communication phase of the algorithm.

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Section: Introductionmentioning

confidence: 99%

Implementation and Evaluation of the Bucket Flattening Omega Network of the Parallel Relational Database Server SDC-II

Tamura

1997

Database Systems for Advanced Applications '97

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A functional disk system for relational database processing: Design and performance evaluation

Nakano

1992

Systems & Computers in Japan

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This paper considers a relational database processing system and proposes a new high-performance secondary memory system and a functional disk system aiming at the high-speed processing. The traditional commercial relational DBMS employs the simple nest-loop and sortmerge as processing methods for relational algebra operations. However, the proposed functional disk system employs the dynamic clustering algorithm so that the processing load is reduced drastically. Such processes as the hash operation, the cluster management mechanism, the record extraction from the physical block and on-the-fly operation, which takes time by the software, are implemented by hardware. The clustering following the data transfer from the disk is then realized.The performance is improved further by using several processors so that the generated clusters are processed in parallel. Usually, the performance is deteriorated greatly due to the mismatch between 0s and DBMS constructed on 0 s . To solve this problem, the dedicated input/output driver and the buffer management routine were developed in the functional disk system by optimizing the dynamic clustering technique. The functional disk system aims at the drastic performance improvement by introducing the database processing mechanism into the secondary memory system. To verify the effectiveness of this idea, an experimental system was constructed. In spite of the simple structure composed of a disk and 4 MC68020, the experimental system achieved a much higher performance than the existing commercial relational database system in the performance evaluation using the Wisconsin benchmark. Thus, the effectiveness of the functional disk system is verified.

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Exegesis of DBC/1012 and P-90 - industrial supercomputer database machines

Cariño

Kostamaa

1992

PARLE '92 Parallel Architectures and Languages Europe

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IDP — A Main Storage Based Vector Database Processor —

Cited by 10 publications

References 1 publication

Implementation and Evaluation of the Bucket Flattening Omega Network of the Parallel Relational Database Server SDC-II

Implementation and Evaluation of the Bucket Flattening Omega Network of the Parallel Relational Database Server SDC-II

A functional disk system for relational database processing: Design and performance evaluation

Exegesis of DBC/1012 and P-90 - industrial supercomputer database machines

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