Assume that we are considering enhancing a machine by adding a vector mode to it. When a computation is performed in vector mode, it is 20 times faster than the normal mode of execution. We call percentage of time that could be spent using vector mode the percentage of vectorization. Part A: What percentage of vectorization is needed to achieve a speedup of 2? Part B: What percentage of vectorization is needed to achieve one-half of the maximum speedup attainable from using vector mode? Part C: Suppose you have measured the percentage of vectorization for programs to be 70%. The hardware design group says they can double the speed of vector rate with a significant additional engineering investment. You wonder whether the compiler crew could increase the use of vector mode as another approach to increasing performance. How much of an increase in the percentage of vectorization (relative to the current usage) would the compiler team need to obtain the same performance gain? Which investment would you recommend?
Assume that we are considering enhancing a machine by adding a vector mode to it. When a computation is performed in vector mode, it is 20 times faster than the normal mode of execution. We call percentage of time that could be spent using vector mode the percentage of vectorization. Part A: What percentage of vectorization is needed to achieve a speedup of 2? Part B: What percentage of vectorization is needed to achieve one-half of the maximum speedup attainable from using vector mode? Part C: Suppose you have measured the percentage of vectorization for programs to be 70%. The hardware design group says they can double the speed of vector rate with a significant additional engineering investment. You wonder whether the compiler crew could increase the use of vector mode as another approach to increasing performance. How much of an increase in the percentage of vectorization (relative to the current usage) would the compiler team need to obtain the same performance gain? Which investment would you recommend?
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Transcribed Image Text:Assume that we are considering enhancing a machine by adding a vector mode to it. When a computation
is performed in vector mode, it is 20 times faster than the normal mode of execution. We call percentage
of time that could be spent using vector mode the percentage of vectorization.
Part A: What percentage of vectorization is needed to achieve a speedup of 2?
Part B: What percentage of vectorization is needed to achieve one-half of the maximum speedup
attainable from using vector mode?
Part C: Suppose you have measured the percentage of vectorization for programs to be 70%. The
hardware design group says they can double the speed of vector rate with a significant additional
engineering investment. You wonder whether the compiler crew could increase the use of vector
mode as another approach to increasing performance. How much of an increase in the percentage
of vectorization (relative to the current usage) would the compiler team need to obtain the same
performance gain? Which investment would you recommend?
* Please Show All Of Your Work. Thank you.
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