External Memory Algorithms - MIT
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8/2/2019 External Memory Algorithms - MIT
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CPU
Cache Disk
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size M
M/B blocks
fast slow
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N/B
N/2B N/2B.
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O(1) O(1) O(1) O(1) O(1)
N/B
N/B
N/B
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N/B
(N/(M/B))(1/B).
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M/B
N/B
N/B
N/B (N/M leaves)
.. .M/B subproblems
(N/(M/B))(1/B)
M/B M/B M/B M/B
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O(M/B)
M
O(M/B) children
M
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O(B)
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