a) Which would you choose to yield the best performance improvement for the least amount of money? b) Which option would you choose if you don't care about the money, but want a faster system?
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Suppose the daytime processing load consists of 70% CPU activity and 30% disk activity. Your customers are complaining that the system is slow. After doing some research, you have learned that you can upgrade your disks to 2.5 times as fast as they are currently for $5,000 or you can upgrade your CPU to make it 1.5 as fast for $8000.
a) Which would you choose to yield the best performance improvement for the least amount of money?
b) Which option would you choose if you don't care about the money, but want a faster system?
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- Suppose the daytime processing load consists of 30% CPU activity and 20% disk activity. Your customers are complaining that the system is slow. After doing some research, you learn that you can upgrade your disks for $1,000 to make them 1.5 times as fast as they are currently. You have also learned that you can upgrade your CPU to make it 1.4 times as fast for $1100. ⦁ Which would you choose to yield the best performance improvement for the least amount of money? ⦁ Calculate the system speedup for each case.Suppose the daytime processing load consists of 60% CPU activity and 40% disk activity. Your customers are complaining that the system is slow. After doing some research, you learn that you can upgrade your disks for $8,000 to make them 2.5 times as fast as they are currently. You have also learned that you can upgrade your CPU to make it 1.4 times as fast for $5,000. Q.Which option would you choose if you don’t care about the money, but want a faster system?Suppose the daytime processing load consists of 60% CPU activity and 40% disk activity. Your customers are complaining that the system is slow. After doing some research, you have learned that you can upgrade your disks for $8,000 to make them 2.5 times as fast as they are currently. You have also learned that you can upgrade your CPU to make it 1.5 times as fast as the current CPU for $5,000. Which upgrade option would give a faster system? Which upgrade option would give the best return of investment for each percent of speed improvement? Show your calculation to support your conclusion.
- A program runs in 15 seconds on computer X, which has a 4 Ghz clock. You are required to help a computer designer to build another computer, Y, that will run the program in 10 seconds. The designer has determined that a substantial increase in the clock rate is possible, but this increase will affect the rest of the CPU design, causing computer Y to require 1.5 times as many clock cycles as computer for this program. What clock rate should you tell the designer to target? Select one: a.0.3 Ghz b.8 Ghz c.9 Ghz d.3 GhzSuppose that you are designing an electronic musical instrument. The prototype system occasionally produces off-key notes, causing listeners to wince and grimace. You have determined that the cause of the problem is that the system becomes overwhelmed in processing the complicated input. You are thinking that if you could boost overall system performance by 12% (making it 12% faster than it is now), you could eliminate the problem. One option is to use a faster processor. If the processor accounts for 25% of the workload of this system, and you need to boost performance by 12%, how much faster does the new processor need to be?Suppose that you are designing an electronic musical instrument. The prototype system occasionally produces off-key notes, causing listeners to wince and grimace. You have determined that the cause of the problem is that the system becomes overwhelmed in processing the complicated input. You are thinking that if you could boost overall system performance by 12%, you could eliminate the problem. One option is to use a faster processor. If the processor accounts for 25% of the workload of this system, and you need to boost performance by 12%, how much faster does the new processor need to be?
- Question:You have the money to buy either a 4 core or an 8-core processor. However, an 8-coreprocessor costs 10 thousand taka more than a 4-core processor. You decide to only buyan 8-core processor if the programs you execute run at least 30% faster in it thanwhat they do in a 4-core processor. Now, if all your programs are 40%serial/sequential then would you buy the 8-core processor? Justify your answer byshowing proper computation.a program runs in 10 seconds on computer A, which has a 4 GHz clock. We are trying to help a computer designer build a computer, B, which will run this program in 6 seconds. The designer has determined that a substantial increase in the clock rate is possible, but this increase will affect the rest of the CPU design, causing computer B to require 1.2 times as many clock cycles as computer A for this program. What clock rate should we tell the designer to target?A firm that needs fast response times got a proposal for a new system with far more storage than the requirements paper required. When the firm asked about the extra storage, the vendor said he was bidding for a set of the company's smallest disk drives. Why didn't the merchant just sell fewer disks?
- Your friend has just bought a new personal computer. She tells you that her new system runs at 1GHz, which makes it over three times faster than her old 300 MHz system. What would you tell her? By using a specific example case (e.g., In a given system, for 40% of its time the processor is busy with computation but for 60% of its time processor is idle waiting for the completion of I/O operations in disk and network devices), explain how Amdahl’s law can be appliedA company that has engaged in a business that requires fast response times has just received a bid for a new system that includes much more storage than was specified in the requirements document. When the company questioned the vendor about the increased storage, the vendor said he was bidding a set of the smallest-capacity disk drives that the company makes. Why didn’t the vendor just bid fewer disks?Our favorite program runs in 8 seconds on computer A, which has a 2 GHz clock. We are trying to help a computer designer build a computer, B, that will run this program in 4 seconds. The designer has determined that a substantial increase in the clock rate is possible, but this increase will affect the rest of the CPU design, causing computer B to require 1.3 times as many clock cycles as computer A for this program. What clock rate should we tell the designer to target?