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Caching III

Caching III. Andreas Klappenecker CPSC321 Computer Architecture. Cache Block Mapping. Direct mapped cache a block goes in exactly one place in the cache Fully associative a block can go anywhere in the cache difficult to find a block parallel comparison to speed-up search.

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Caching III

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  1. Caching III Andreas Klappenecker CPSC321 Computer Architecture

  2. Cache Block Mapping • Direct mapped cache • a block goes in exactly one place in the cache • Fully associative • a block can go anywhere in the cache • difficult to find a block • parallel comparison to speed-up search

  3. Cache Block Mapping • Set associative • Each block maps to a unique set, and the block can be placed into any element of that set • Position is given by (Block number) modulo (# of sets in cache) • If the sets contain n elements, then the cache is called n-way set associative

  4. Cache Types

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