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4 cards from this section. Quick, good the night before a test.
What does CPI stand for?
It's a measure of how many cycles an instruction takes.
Define a memory stall cycle.
Think about when the CPU has to pause its work.
What is the primary factor in CPU time calculations?
Think about what happens when there's a delay in accessing memory.
True or False: A lower miss rate generally leads to better CPU performance.
Consider the relationship between access time and miss rate.
If a CPU processes 100 million instructions with a base CPI of 1.2 but experiences a 15% miss rate with a 100-cycle miss penalty, calculate the overall effective CPI.
Remember to convert percentages to decimals before multiplication.
In a system with a page fault rate of 0.01 and a miss penalty of 40 milliseconds, determine the average memory access time given a hit time of 200 nanoseconds.
Use unit conversions for milliseconds to nanoseconds to keep consistent in your calculations.
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