The term clock cycles per instruction (CPI) is the average number of clock cycles each instruction takes to execute.
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For the following sequence of ANNA instructions, make an execution time graph, similar to the one on slide 100 in Lecture6.pdf. Assume NO data forwarding is available. What is the average number of cycles per instruction (CPI) for executing these instructions? (12 + 6) Time: add r1 r2 r3 sub r3 r1 r4 lw r5 r3 10 shf r6 r5 1 sw r6 r1 0 lw r7 r1 0
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The process known as the _____ cycle is used by the cpu to execute instructions in a program.
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Assume that a pipelined processor has three categories of instructions: Branch, load/store, other. If it is a branch instruction it will take 3 clock cycles, if it is a load/ store instruction it will take 4 clock cycles and all other instructions require 6 clock cycles. A program consisting of $10 \%$ Branch instructions, $10 \%$ of load/store instructions is executed on this processor. Then the number of clock cycles required for the execution of the program is (A) $2.45$ (B) $3.61$ (C) $4.66$ (D) $5.5$
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