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
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Consider 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.
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- Processor R is a 64-bit RISC processor with a 2 GHz clock rate. The average instruction requires one cycle to complete, assuming zero wait state memory accesses. Processor C is a CISC processor with a 1.8 GHz clock rate. The average simple instruction requires one cycle to complete, assuming zero wait state memory accesses. The average complex instruction requires two cycles to complete, assuming zero wait state memory accesses. Processor R can’t directly implement the complex processing instructions of Processor C. Executing an equivalent set of simple instructions requires an average of three cycles to complete, assuming zero wait state memory accesses. Program S contains nothing but simple instructions. Program C executes 70% simple instructions and 30% complex instructions. Which processor will execute program S more quickly? Which processor will execute program C more quickly? At what percentage of complex instructions will the performance of the two processors be equal?How does pipelining improve CPU efficiency? What’s the potential effect on pipelining’s efficiency when executing a conditional BRANCH instruction? What techniques can be used to make pipelining more efficient when executing conditional BRANCH instructions?Consider 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. a. Which processor has the highest performance expressed in instructions per second? b. If the processors each execute a program in 10 seconds, find the number of cycles and the number of instructions. c. We are trying to reduce the execution time by 30% but this leads to an increase of 20% in the CPI. What clock rate should we have to get this time reduction?
- Q: Consider three different processors P1, P2, and P3 that support 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. (a) Which processor has the highest performance expressed in instructions per second? Show your calculations. (b) If the processors each execute a program in 10 seconds, find the number of cycles and the number of instructions for each processor. (c) We are trying to reduce the execution time by 30% (i.e., execution time is reduced from 10 seconds to 7 seconds). However, this leads to an increase of 20% in the CPI. For each processor, what clock rate should we have to get this time reduction? (Show the calculations you did to answer this question.)Consider three different processors P1, P2, and P3 executing the same instruction set. P1 has a 3.1 GHz clock rate and a CPI (cycles per instruction) of 1.6. P2 has a 2.4 GHz clock rate and a CPI of 1.2. P3 has a 4.0 GHz clock rate and has a CPI of 2.0 If you could answer these id appreciate that greatly. a.Which processor has the highest performance expressed in instructions per second? b.If the processors each execute a program in 10 seconds, find the number of cycles and the number of instructions. c.We are trying to reduce the execution time by 30% but this leads to an increase of 20% in the CPI. What clock rate should we have to get this time reduction?Consider three different processors P1, P2, and P3 executing the same instructionset. P1 has a 3GHz clock rate and a CPI of 1.5. P2 has a 2.5GHz clock rate and a CPI of 1.0, P3has a 4GHz and a CPI of 2.5.a) Which processor has the highest performance expressed in instructions per second?b) If the processors each execute a program in 5 seconds, find the number of cycles and thenumber of instructions.c) We are trying to reduce the execution time by 20% but this leads to an increase of 15% inthe CPI. What clock rate should we have to get this time reduction?
- Consider three different processors P1, P2, P3 executing the same set of instructions. P1has 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 4GHz 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 thenumber of instructions for each processor.c. We would like to reduce the execution time by 20%. This will, however, increasethe CPI by 25%. What clock rate do we need to obtain this amount of timereduction?Consider two processors P1 and P2. P1 has a clock rate of 2 GHz, average CPI of 0.8, and requires the execution of 5.0 x 10^9 instructions for a given task. P2 has a clock rate of 3 GHz, an average CPI of 1.2, and requires the execution of 6.0 x 10^9 instructions for the same task. Does the processor with the highest clock rate have a better performance? Justify your answer.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.
- Question: Suppose a program of 600 instructions runs on a 2 GHz processor. The frequency of instructions and the clock cycle counts per instruction are given as follows. What is the average CPI of this instruction mix? Operation Frequency Clock Cycles ALU operations 55% 1 Loads/Stores 30% 2 Branches 15% 3 Question: Continue from the previous question. What is the CPU time of the program in nanoseconds? Question: Suppose a processor P has a 2.5 GHz clock rate and a CPI of 1.5. If the processor executes a program in 3 microseconds, find the number of instructions in the program.Q2/ Consider three different processors P1, P2, and P3 with the clock rates and CPIs given in the following table. Processor Clock Rate CPI P1 4 2 P2 2.5 1.0 P3 3 1.5 If the processors each execute a program in 10 seconds, find the number of cycles and the number of instructions. Which processor has the highest performance expressed in instructions per second if all processors have the same instructions set architecture? Q/3 Our favorite program runs in 10 seconds on computer A, which has a 400Mhz. clock. We are trying to help a computer designer build a new machine B, that will run this program in 6 seconds. The designer can use new technology to substantially increase the clock rate, but has informed us that this increase will affect the rest of the CPU design, causing machine B to require 1.2 times as many clock cycles as machine A for the same program. What clock rate should we tell the designer to target? Answer: Q 4/ Suppose we have two implementations of the…Suppose two CPU A and B have exactly the same circuits, but different clock frequencies. Answer the following questions: a) If the clock frequency of CPU A is 8MHz, how long is one clock cycle of CPU A? b) If the CPU A can execute 0.4 million instructions per second on average, how long is the average time to execute one instruction? c) What is the average number of clock cycle to execute one instruction for CPU A? d) The frequency of CPU B is 12MHz. What is the average number of instructions that can be executed per second?