Practice Problem 6.21 Slopes of spatial Core i7 Haswell 2.1 GHz 32 KB L1 d-cache 256 KB L2 cache 8 MB L3 cache 64 B block size 16,000 4,000 L1 12,000 10,000 8,000 6,000 4,000 2,000 L2 Ridges of L3 s1 32 K s3 Mem 128 K S5 512 K 2 M S7 Stride (x8 bytes) S9 8 M Size (bytes) 32 M s11 128 M Use the memory mountain in the figure above to estimate the time, in CPU cycles, to read an 8-byte word from the L1 d-cache Express your answer using two significant figures CPU cycles Practice Problem 6.21 Slopes of spatial Core i7 Haswell 2.1 GHz 32 KB L1 d-cache 256 KB L2 cache 8 MB L3 cache 64 B block size 16,000 4,000 L1 12,000 10,000 8,000 6,000 4,000 2,000 L2 Ridges of L3 s1 32 K s3 Mem 128 K S5 512 K 2 M S7 Stride (x8 bytes) S9 8 M Size (bytes) 32 M s11 128 M Use the memory mountain in the figure above to estimate the time, in CPU cycles, to read an 8-byte word from the L1 d-cache Express your answer using two significant figures CPU cycles