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Consider three different processors P1,P2,and P3 executing the same instruction set with the clock rates and CPIs given in the following table. Processor | Clock rate | CPI | P1 | 2 GHz | 1.5 | P2 | 1.5GHz | 1.0 | P3 | 3 GHz | 2.5 |
1.3.1. Which processor has highest performance?
1.3.2 If the processors each execute a program in 10 seconds, find the number of cycles and number of instructions.
1.3.3. We are trying to reduce the time by 30% but this leads to an increase of 20% in the CPI. What clock rate should we have to get this name reduction?
谁可以给我答案吗?感激不尽 |