Patent
1996-12-17
1998-03-10
Harvey, Jack B.
39520001, 39520003, 39520009, 395474, G06F 1300
Patent
active
057271500
ABSTRACT:
A page migration controller is described. The page migration controller determines whether a memory page addressed by a memory access request should be migrated from a local processing node to a requester processing node. The page migration controller accesses an array to obtain a first count associated with the addressed memory page and the requester processing node, and a second count associated with the addressed memory page and the local processing node. The first count is incremented, and then the second count is subtracted from the incremented first count to obtain a difference between the second count and the incremented first count. A comparator determines whether the difference is greater than a migration threshold value. If the difference is greater than the migration threshold value, then a migration interrupt is issued.
REFERENCES:
patent: 5269013 (1993-12-01), Abramson et al.
patent: 5313631 (1994-05-01), Kao
Intellectual leverage, San Francisco, Feb. 26-Mar. 3, 1989, IEEE, pp. 184-190. "Competitive Management of Distributed Shared Memory", Black D. L. et al.
Proceedings of the Symposium on Operating Systems Principles, Pacific Grove, Oct. 13-16, 1991, No. Symp. 13, 13 Oct. 1991, Association for Computing Machinery, pp. 137-151, XP000313825, Larowe, Jr. Richard P. et al.: The Robustness of NUMA Memory Managment.
Intellectual Leverage, San Francisco, Feb. 27-Mar. 3, 1989 no. Conf. 34, 27 Feb. 1989, Institute of Electrical and Electronics Engineers, pp. 184-190, XP000092718, Black D. L. et al.: Competitive Management of Distributed Shared Memory.
Computer Architecture News, vol. 17, No. 2, 1 Apr. 1989, pp. 104-112, XP000065592, Holliday M. A.: Reference History, Page Size, and Migration Daemonns in Local/Remote Architectures.
A. Agarwal, R. Simoni, J. Hennessey and M. Horowitz, "An Evaluation of Directory Schemes for Cache Coherence", Proceedings of the 15th Int. Symp. on Computer Architecture, Jun. 1988, pp. 280-289.
H. Burkhart III et al., "The KSR1: Bridging the Gap Between Shared Memory and MPP's", Kendall Square Research Corporation, 1993, pp. 285-294.
L. Censier and P. Fearrier, "A New Solution to Coherence Problems in Multi-Cache Systems", IEEE Transactions on Computers, vol. 27, No. 12, Dec. 1978, pp. 1112-1118.
A. Grupta, W. Weber and T. Mowry, "Reducing Memory and Traffic Requirements for Scalable Directory-Based Cache Conference Schemes", Proceedings of the 1990 Conference on Parallel Processing, Aug. 1990, pp. 312-321.
Laudon James P.
Lenoski Daniel E.
Etienne Ario
Harvey Jack B.
Silicon Graphics Inc.
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