Question: How many 16-byte cache lines are needed to store all 32-bit matrix elements being referenced? Locality is affected by both the reference order and data

How many 16-byte cache lines are needed to store all 32-bit matrix elements being referenced?

Locality is affected by both the reference order and data layout. The same computation can also be written below in Matlab, which differs from C by contiguously storing matrix elements within the same column. a. b. for I-1:8 for J-1:8000 A(I,J)=B (1,0) +A(J, I); end end for J-1:8000 for I=1:8 A(I,J) B(1,0) +A(J, I);

a. b. for I-1:8 for J-1:8000 A(I,J)=B (1,0) +A(J, I); end end for J-1:8000 for I=1:8 A(I,J)=B (1,0) +A(J, I); end end

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