Consider a processors P2 with a 2.5 GHz clock rate and a CPI of 1. For a pro are trying to update the design of P2 so that it reduces the execution time by but this leads to an increase of 20% in the CPI. What clock rate should we ha get this time reduction for processor P2? (Select the closest answer) 4.2 5.2 6.8 7.0
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- Consider two computers, P1 and P2, of the same instruction set (ISA). We have a program of 7.5x10° instructions and we want to run this program on P1 and P2. The P1 computer is a 5 GHz machine with CPI of 0.8. The P2 computer is a 6 GHz machine with CPI of 1.2. What is the CPU time of P1 computer to run this program?1. A program has 5 billion instructions is running with a CPI of 2 on a machine with a 2.5GHZ frequency, what is the execution time in seconds? 2. In a program 40% of the instructions have a CPI of 1, 25% have a CPI of 2, 20% have a CPI of 3 and 15% have a CPI of 5. Find the number of instructions per second if the machine is running at 900 MHz? 3. If 5 processors can run a program 2 times faster than a single processor, how much faster than a single processor can 10 processors run the same program? 4. If the base machine can run the 5 SPEC benchmarks in 1Os, 20s, 30s, 40s and 60s, whereas the target machine can run them in 5s, 1Os, 5s, 10s and 40s, respectively, what is the SPEC value for this scenario?Consider two computers, P1 and P2, of the same instruction set (ISA). We have a program of 7.5x10⁹ instructions and we want to run this program on P1 and P2. The P1 computer is a 5 GHz machine with CPI of 0.8. The P2 computer is a 6 GHz machine with CPI of 1.2. How many times that computer is faster than another?
- Suppose that we are developing a new version of the AMD Barcelona proces- sor with a 4 GHz clock rate. We have added some additional instructions to the instruction set in such a way that the number of instructions has been reduced by 15% from the values shown for each benchmark in Exercise 1.12. The execution times obtained are shown in the following table. a. Name Execution Time (seconds) Reference Time (seconds) bzip2 700 9650 SPECratio 13.7 1.13.2 [10] In general, these CPI values are larger than those obtained in previous exercises for the same benchmarks. This is due mainly to the clock rate used in both cases, 3 GHz and 4 GHz. Determine whether the increase in the CPI is similar to that of the clock rate. If they are dissimilar, why?2. Suppose we have two implementations of the same instruction set architecture. Computer A has a clock cycle time of 250 ps and a CPI of 2.0 for some program and computer B has a clock cycle time of 500 ps and a CPI of 1.2 for the same program. Which computer is faster for this program and by how much? ur foverit 10 goA Program is running on a processor Pl and it has the following parameters: Ic is equal to 20,000,000 instructions Average CPI is 3 cycles/instruction CPU frequency is 500 MHz A new processor P2 is used with the following parameters and the program is executed on this new processor now: Ic is equal to 18,000,000 instructions New average CPI: 3.5 cycles/instruction CPU new frequency: 600 MHz Which processor is faster? Compute the speedup.
- Suppose we have two implementations:Machine A has a clock cycle time of 10 ns. and a CPI of 2.0. Machine B has aclock cycle time of 20 ns. and a CPI of 1.2. Which machine is faster for thisprogram, and how much in percentage? Consider that the total instruction in the program is 1x10^9 or about 1,000,000,000 set of instructions since the cycle time is running in nanoseconds.Consider the two computers A and B with the clock cycle times 100 ps and 150 ps respectively for some program. The number of cycles per instruction (CPI) for A and B are 2.0 and 1.0 respectively for the same program. Which computer is faster and how much? Va A is 1.33 times faster than B b) B is 1.22 times faster than A c) A is 1.23 times faster thanB d) B is 1.33 times faster than AConsider three different processors P1, P2, and P3 executing the same instruction set. P1 has a 3 GHz clock rate and a CPI of 1.5. P2 has a 2.5 GHz clock rate and a CPI of 1.0. P3 has a 4.0 GHz clock rate and has a CPI of 2.2. Which processor has the highest performance expressed in instructions per second? If the processors each execute a program in 10 seconds, find the number of cycles and the number of instructions.
- Consider three different processors P1, P2, P3 executing the same set of instructions. P1 has a 3 GHz clock rate and a CPI of 1.5. P2 runs at 2 GHz and has a CPI of 1.2. P3 has a 4 GHz clock rate and a CPI of 2.4. a. Which processor has the highest performance in terms of instructions per second? b. If each processor executes a program in 5 second, find the number of cycles and the number of instructions for each processor. c. We would like to reduce the execution time by 20%. This will, however, increase the CPI by 25%. What clock rate do we need to obtain this amount of time reduction?A Program is running on a processor P1 and it has the following parameters: Ic is equal to 20,000,000 instructions Average CPI is 3 cycles/instruction CPU frequency is 500 MHz A new processor P2 is used with the following parameters and the program is executed on this new processor now: Ic is equal to 18,000,000 instructions New average CPI: 3.5 cycles/instruction CPU new frequency: 600 MHz Which processor is faster? Compute the speedup.Consider a group of 5 benchmarks. With an old generation of CPU in the 90s, the execution times of these benchmarks were 10 minutes, 16 minutes, 4 minutes, 1 minute and 8 minutes. With a new generation of CPU in 2020, the execution time of these benchmarks are 5 minutes, 2 minutes, 2 minutes, 15 seconds and 1 minutes. What is the average speedup of the new CPU (comparing to the old CPU)? Note that, you need to determine whether arithmetic mean or geometric mean should be used here.