Transactions of the Institute of Systems, Control and Information Engineers
New Arrival Alert : OFF

You can use this feature after you logged into the site.
Please click the button below.

Log in / Sign up
ONLINE ISSN: 2185-811X
PRINT ISSN: 1342-5668

Transactions of the Institute of Systems, Control and Information Engineers Vol. 22 (2009), No. 11

  • Clustered Pipelined Multithreading on Commodity Multi-Core Processors

    pp. 371-384

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.5687/iscie.22.371

    Recently proposed pipelined multithreading (PMT) techniques have shown great applicability to parallelizing general programs on multi-core processors. However, the potential performance of these techniques is limited by the large inter-core communication overheads which become a performance bottleneck. This paper addresses this problem and presents a novel clustered pipelined multithreading (CPMT) technique that can construct efficient pipeline parallelism on commodity multi-core processors. This technique combines a clustered communication mechanism that can greatly reduce average communication overheads (ACOs) in software only approach. We quantitatively demonstrate the performance of CPMT can be improved through reducing the ACOs and show the performance characteristics. Moreover, we also give the stage decomposition procedure and provide a stage execution framework that can execute the multiple stages within one procedure. The effectiveness of CPMT technique has been evaluated on the commodity AMD Phenom four-core processors. Experimental results show that our CPMT technique achieves speedup ranging from 116.8% to 219.8% on some typical loops extracted from SPEC CPU 2000 benchmark programs.
  • Proposal of Approximating Hypervolume by Scalarizing Functions for Evolutionary Many-Objective Optimization

    pp. 385-395

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.5687/iscie.22.385

    Hypervolume is one of the most frequently-used and well-known performance measures to compare the performance of the obtained solution sets by evolutionary multiobjective optimization (EMO) algorithms. Hypervolume is used to evaluate both the convergence of solutions to the Pareto front and their diversity. The main difficulty in the use of the hypervolume is that the computation load for its calculation increases exponentially with the number of objectives. In this paper, we propose an idea of approximating the hypervolume of an obtained non-dominated solution set using a number of achievement scalarizing functions with uniformly distributed weight vectors. We use each scalarizing function to measure the distance from the reference point of the hypervolume to the attainment surface of the obtained non-dominated solution set along its own search direction. We examine the effect of the number of weight vectors on the approximation accuracy and the computation load. Through computational experiments, we show that the approximation accuracy is improved by increasing the number of weight vectors. We also show that our idea needs much less computational load than the existing hypervolume calculation for many-objective problems.
  • A Study of Multi-period Production Planning under Limited Information about Demand

    pp. 396-398

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.5687/iscie.22.396

Article Access Ranking

21 Sep. (Last 30 Days)

  1. Formation and Evolution of Inclusions in High Chromium Steel ISIJ International Vol.61(2021), No.9
  2. Perspective toward Long-term Global Goal for Carbon Dioxide Mitigation in Steel Industry Tetsu-to-Hagané Vol.105(2019), No.6
  3. Effect of Heating Rate on Carbothermic Reduction and Melting Behavior of Iron Ore-Coal Composite Pellets ISIJ International Advance Publication
  4. Preface to the Special Issue on “Recent Progress in Inclusion/ Precipitate Engineering” ISIJ International Vol.61(2021), No.9
  5. Evaluation of Interfacial Energy between Molten Fe and Fe-18%Cr-9%Ni Alloy and Non-Metallic Inclusion-Type Oxides ISIJ International Vol.61(2021), No.9
  6. Production and Technology of Iron and Steel in Japan during 2020 ISIJ International Vol.61(2021), No.6
  7. Modeling of Wall Shear Stress Induced Inclusion Transport and Removal in Multi-Strand Tundish ISIJ International Vol.61(2021), No.9
  8. Three-dimensional Quantitative Evaluation of the Lamellar Curvature in Pearlitic Steel Based on an Orientation Analysis of Cementite ISIJ International Advance Publication
  9. Analysis of Air-Mist Cooling Effect for Coil in the Electromagnetic Induction Controlled Automated Steel Teeming System ISIJ International Vol.61(2021), No.9
  10. Simultaneous Analysis of Soluble and Insoluble Oxygen Contents in Steel Specimens Using Inert Gas Fusion Infrared Absorptiometry ISIJ International Vol.61(2021), No.9

Search Phrase Ranking

21 Sep. (Last 30 Days)

  1. blast furnace
  2. inconel 600
  3. blast furnace productivity
  4. miyamoto goro
  5. nozzle clogging
  6. b2o3 mold flux
  7. blue carbon
  8. investigation of arc behavior and temperature distribution corresponding to electrode and phase configurations in a multiphase ac arc
  9. ohno
  10. sei kimura