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Access conflicts in multiprocessor memories queueing models and simulation studies

Published: 01 June 1990 Publication History

Abstract

The performance of an interleaved common memory accessed uniformly by multiple processors is modeled by queueing methods. The model includes access conflicts at the bank level while assuming an ideal access network.
A scaling relation is derived that is generally valid and indicates that memory access delays are given by the product of the bank reservation time and a function of the memory utilization, which is given by the average number of access requests arriving at a bank per bank reservation time. For light memory traffic, access delays are proportional to the square of the bank reservation time and the ratio of the number of active memory access streams to the number of memory banks.
Assuming random access patterns, an open and a closed queueing model are developed that are validated by simulations. Delay dependence on bank reservation time is quadratic for light loads and linear for very heavy loads.
A heuristic extension of our model for vector accessing of banks in sequential mode is proposed.

References

[1]
Calahan, D. A. and D. H. Bailey, "'Measurement and Analysis of Memory Conflicts on Vector Multiprocessors," in Performance Evaluation of Supercomputers, J. L. Martin, Ed., Elsevier, 1988.
[2]
Bucher, I. Y. and M. L. Simmons, "Measurements of Memory Access Contentions in Multiple Vector Proeessor Systems," to be published.
[3]
Chang, D. Y., D. J. Kuck, and D. H. Lawrie, "On the Effective Bandwidth of Parallel Memories," IEEE Trans. Comp., C-26 (1977), 480-489.
[4]
Bailey, D. H., "Vector Computer Memory Bank Contention," IEEE Trans. Comp., C-36 (1987), 293-298.
[5]
Calahan, D. A. "Some Results in Memory Conflict Analysis," Proceedings of Supercomputing 1989, 775-778.
[6]
Tang, P. and R. H. Mendez, "Memory Conflicts and Machine Performance," Proceedings of Supercomputing 1989, 826-831.
[7]
Denning, P. J. and J. P. Buzen, "The Operational Analysis of Queueing Network Models," Computing Surveys 10 (1978), 225-261.
[8]
Kleinrock, L., "Queueing Theory," Vol. i, Wiley, New York, 1975.

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  • (1995)Vector multiprocessors with arbitrated memory accessACM SIGARCH Computer Architecture News10.1145/225830.22443523:2(243-252)Online publication date: 1-May-1995
  • (1995)Vector multiprocessors with arbitrated memory accessProceedings of the 22nd annual international symposium on Computer architecture10.1145/223982.224435(243-252)Online publication date: 1-Jul-1995
  • (1995)A Memory Interference Model for Regularly Patterned Multiple Stream Vector AccessesIEEE Transactions on Parallel and Distributed Systems10.1109/71.3823206:5(520-530)Online publication date: 1-May-1995
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cover image ACM Conferences
ICS '90: Proceedings of the 4th international conference on Supercomputing
June 1990
492 pages
ISBN:0897913698
DOI:10.1145/77726
  • cover image ACM SIGARCH Computer Architecture News
    ACM SIGARCH Computer Architecture News  Volume 18, Issue 3b
    Special Issue: Proceedings of the 4th international conference on Supercomputing
    Sept. 1990
    489 pages
    ISSN:0163-5964
    DOI:10.1145/255129
    Issue’s Table of Contents
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Published: 01 June 1990

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IC'90
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IC'90: ACM SIGARCH International Conference on Supercomputing
June 11 - 15, 1990
Amsterdam, The Netherlands

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Overall Acceptance Rate 629 of 2,180 submissions, 29%

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Cited By

View all
  • (1995)Vector multiprocessors with arbitrated memory accessACM SIGARCH Computer Architecture News10.1145/225830.22443523:2(243-252)Online publication date: 1-May-1995
  • (1995)Vector multiprocessors with arbitrated memory accessProceedings of the 22nd annual international symposium on Computer architecture10.1145/223982.224435(243-252)Online publication date: 1-Jul-1995
  • (1995)A Memory Interference Model for Regularly Patterned Multiple Stream Vector AccessesIEEE Transactions on Parallel and Distributed Systems10.1109/71.3823206:5(520-530)Online publication date: 1-May-1995
  • (1994)Compiling performance models from parallel programsProceedings of the 8th international conference on Supercomputing10.1145/181181.181546(303-312)Online publication date: 16-Jul-1994
  • (1994)Synchronized access to streams in SIMD vector multiprocessorsProceedings of the 8th international conference on Supercomputing10.1145/181181.181204(23-32)Online publication date: 16-Jul-1994
  • (1992)Characterizing memory performance in vector multiprocessorsProceedings of the 6th international conference on Supercomputing10.1145/143369.143379(35-44)Online publication date: 1-Aug-1992
  • (1992)Scalar Memory References in Pipelined MultiprocessorsIEEE Transactions on Software Engineering10.1109/32.12031818:1(78-86)Online publication date: 1-Jan-1992
  • (1991)Measurement of memory access contentions in multiple vector processor systemsProceedings of the 1991 ACM/IEEE conference on Supercomputing10.1145/125826.126197(806-817)Online publication date: 1-Aug-1991
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  • (2018)MTTF-Aware Reliability Task Scheduling for PIM-Based Heterogeneous Computing System2018 IEEE International Test Conference in Asia (ITC-Asia)10.1109/ITC-Asia.2018.00015(25-30)Online publication date: Aug-2018
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