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Consider a processor that has a 2 GHz clock rate and a CPI of 1.5. If the processor executes a
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- A processor executes a program in 10 seconds with an average CPI and IC of 2 and 20*109 respectively. We are trying to reduce the time by 20% but this leads to an increase of 50% in the CPI. What clock rate should we have to get this time reduction?Suppose a program (or a program task) takes 1 billion instructions to execute ona processor running at 2 GHz. Suppose also that 50% of the instructions executein 3 clock cycles, 30% execute in 4 clock cycles, and 20% execute in 5 clockcycles. What is the CPI and CPU time for the program?Consider a processor with a 3.4 GHz clock rate and a CPI of 2.2. If the processor execute a program in 33 seconds, find the number of cycles.
- Consider having a program that runs in 50 s on computer A, which has a 500 MHz clock. We would like to run the same program on another machine, B, in 20 s. If machine B requires 2.5 times as many clock cycles as machine A for the same program, what clock rate must machine B have in MHz?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 AA 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.
- Given three CPU s, A,B, and C, where a given program takes 5 ms on A 250 us on B 50 ns on C Find the speed up ratios between A:B. B:C. and A:CIf in a computer system , a cpu is capable to process 100 instructions cycles in 1 second . what would be the speed of this cpu in Hertz ?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 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?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?What is the CPU time if the number of instructions executed by the program is 500cycles per instruction is 5 and the clock cycle time is 200 ps?