6. Assume that multiply instructions take 5 cycles to execute and account for 30% of the...
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6. Assume that multiply instructions take 5 cycles to execute and account for 30% of the instructions in a typical program and that the other 70% of the instructions require an average of 3 cycles for each instruction. a. What is the percentage of time that the CPU spends doing multiplication? [5%] Estimate the CPI value for a typical program executing on this machine [5%]. b. c. Assume that it is possible to reduce the number of cycles required for multiplication from 5 to 4, but this will require a 20% increase in the cycle time. Nothing else will be affected. Should we proceed with this modification? Explain why or why not [10%]. 6. Assume that multiply instructions take 5 cycles to execute and account for 30% of the instructions in a typical program and that the other 70% of the instructions require an average of 3 cycles for each instruction. a. What is the percentage of time that the CPU spends doing multiplication? [5%] Estimate the CPI value for a typical program executing on this machine [5%]. b. c. Assume that it is possible to reduce the number of cycles required for multiplication from 5 to 4, but this will require a 20% increase in the cycle time. Nothing else will be affected. Should we proceed with this modification? Explain why or why not [10%].
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To answer this question we need to calculate different metrics based on cycle times and instruction mix for a CPU Lets address each part of the question stepbystep a What is the percentage of time tha... View the full answer
Related Book For
Income Tax Fundamentals 2013
ISBN: 9781285586618
31st Edition
Authors: Gerald E. Whittenburg, Martha Altus Buller, Steven L Gill
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