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分散アルゴリズム(1)

suikwasha
November 07, 2012
210

 分散アルゴリズム(1)

自分用メモ
P5 to P20

suikwasha

November 07, 2012
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  1. • ϓϩηε ஞ࣍ΞϧΰϦζϜ͕ɼ͋Δϓϩηοαʹ ׂΓ౰ͯΒΕ࣮ͯߦ͞Ε͍ͯΔաఔɽ • ֤ϓϩηε Pi ͸ࣝผࢠ id(Pi) Λ࣋ͭɽࣝ

    ผࢠ͸ O(log n) Ϗοτͷࣗવ਺ɽ • ֤ϓϩηε Pi ͸ہॴ࣌ܭΛ࣋ͭɽ ࿦ཧ࣌ؒ͋Δ͍͸࣮࣌ؒΛදݱ͢Δɽ
  2. • ϝοηʔδૹड৴ํ๏ͷछྨɽ ૹ৴ͱड৴ʹͦΕͧΕ̎छྨͷํ๏͕͋ Δɽ • ྫɿϓϩηε P1 ͕ϝοηʔδ M Λϓϩ

    ηε P2 ʹૹ৴͠Α͏ͱͨ͠ͱ͢Δɽ M ϓϩηε P1 ϓϩηε P2 send receive ೖྗ଴ͪߦྻ
  3. • ϒϩοΩϯά Send P2 ͕ M Λड৴ՄೳʹͳΔ·Ͱ P1 ͕଴ͨ͞ΕɼP2 ͕

    M Λड৴ͨ࣌͠ʹऴྃ͢Δɽ • ඇϒϩοΩϯά Send ૹͬͨϝοηʔδ͕ड৴͞ΕΔ·Ͱ P1 ͕଴ͨ͞Εͳ ͍ɽ͜ͷ࣌ɼϝοηʔδ͸ P2 ͷೖྗ଴ͪߦྻʹೖΔ • ̎छྨͷҧ͍͸ɼϒϩοΩϯά Send ͸ P1 ͕ P2 ͷ M ͷड৴Λ஌Δ͜ͱ͕ग़དྷΔɽ
  4. • ෼ࢄΞϧΰϦζϜͱ͸ʁ ֤ϓϩηε Pi ͕࣮ߦ͢ΔΞϧΰϦζϜ Ai ͷू߹ A ͷ͜ͱɽ •

    ֤ϓϩηε͕શ͘ҧ͏ΞϧΰϦζϜ΋ͷ Ͱ΋Մೳɽ • ෼ࢄΞϧΰϦζϜ͸ɼ͔̍ͭෳ਺ͷ࢝ಈ ϓϩηεʹΑͬͯ։࢝͞ΕΔɽ ͦΕҙ֎ͷϓϩηε͸ϝοηʔδΛड৴࣮ͯ͠ߦΛ։࢝͢Δɽ