GATE CS 2025 Set 2 — Question 61
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Computer Organization & Architecture → Instruction Pipelining → Instruction Types
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Question
An application executes number of instructions in seconds. There are four types of instructions, the details of which are given in the table. The duration of a clock cycle in nanoseconds is _________. (rounded off to one decimal place)
| Instruction type | Clock cycles required per instruction (CPI) | Number of instructions executed |
|---|---|---|
| Branch | 2 | |
| Load | 5 | |
| Store | 4 | |
| Arithmetic | 3 |
Correct answer
3 to 3
Solution
To find the duration of a clock cycle, we first calculate the total number of clock cycles required to execute all the instructions.Step 1: Calculate the total clock cycles ().
cycles.Step 2: Relate total cycles and execution time to clock cycle duration ().
Step 3: Convert the duration to nanoseconds.
Since ,
.The question asks for the answer rounded off to one decimal place, which is .
cycles.Step 2: Relate total cycles and execution time to clock cycle duration ().
Step 3: Convert the duration to nanoseconds.
Since ,
.The question asks for the answer rounded off to one decimal place, which is .
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