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109年 - 109 國立中山大學_碩士班招生考試_資工系(甲、乙組)：計算機結構#105754
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題組內容
2.The instruction latency for a given CPU is shown in Table 1.
2.2 Variant 1: All add instructions are replaced with corresponding subtract instructions that take the same amount of time. Calculate the CPI of the Variant 1?
其他申論題
1.3 How many virtual pages are available to each process, assuming 4KB pages?
#450042
1.4 Assume each page table entry is 4 bytes, how much memory would a single-level page table require?
#450043
1.5 Assuming a two-level page table where half the bits of the virtual page number are used to index the first level, and the other half are used to index the second level, how many second-level page tables can a process use if its total page table size is limited to 400KB?
#450044
2.1 Calculate the CPI of the given CPU?
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2.3Variant 2: Remove the highest-latency instruction, and replace all those instructions with additional latency of three cycles for the lowest latency instruction in the mix. Calculate the CPI of the Variant 2 (relative to the original instruction count)?
#450047
2.4Variant 3: Reduce the latency for divides by a factor of four, but increase the latencies of branches by 50%. Calculate the CPI of the Variant 3?
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#450049
3.1 What would be the speed up for the fastest possible execution of the program?
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3.2 What would the same program's speedup be if all 16 units of die area were used to build a homogeneous system with 16 small cores, the serial portion ran on one of the small cores, and the parallel portion ran on all 16 small cores?
#450051
4.1What is the hit rate of the TLB for this sequence of references?
#450052
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