Computer Architecture: Memory and Cache, if your answer is not sure, please indi

Question

Computer Architecture: Memory and Cache, if your answer is not sure, please indicate NOT SURE Thanks

(Q1) If an 8-way set-associative cache is made up of 32 bit words, 4 words per block and 4096 sets, how big is the cache in bytes?

(a) 128KiB (131.072KB)

(b) 64KiB (65.536KB)

(c) 512KiB (524.288KB)

(d) 8KiB (8.192KB)

(Q2) A 32kB cache has a block size of 16 bytes and is 4-way set-associative. How many bits of a 32-bit address will be in the Tag, Index, and Bock Offset?

(a) Tag: 13; Index: 13; Offset: 6

(b) Tag: 19; Index: 9; Offset: 4

(c) Tag: 10; Index: 12; Offset: 10

(d) Tag: 20; Index: 9; Offset: 3

Explanation / Answer

Answer :

(Q2) A 32kB cache has a block size of 16 bytes and is 4-way set-associative. How many bits of a 32-bit address will be in the Tag, Index, and Bock Offset?

(a) Tag: 13; Index: 13; Offset: 6

(b) Tag: 19; Index: 9; Offset: 4

(c) Tag: 10; Index: 12; Offset: 10

(d) Tag: 20; Index: 9; Offset: 3

Answer :

(b) Tag: 19; Index: 9; Offset: 4

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