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Cache line "formulae"
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11
Geography
3rd Grade
05/16/2011
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Term
# cache lines
 Definition
size of cache memory / (words per block * bytes per word)
Term
# index bits
 Definition
lg(# of lines) / set associativity
Term
# word offset bits
 Definition
lg(words per block)
Term
# byte offset bits
 Definition
lg(bytes per word)
Term
Associativity affects (a) pages, (b) lines, (c) both
 Definition
(a) lines
Term
# cache lookup bits
 Definition
# bits total = lg(memory size)
Term
# index bits
 Definition
# cache line bits - # management bits
Term
# cache line bits
 Definition
1 (V) + 1 (D) + # tag bits + # data bits
Term
# tag bits
 Definition
# cache lookup bits
Term
# data bits
 Definition
bits per word * words per block
Term
# management bits
 Definition
1 (V) + 1 (D) + # tag bits
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