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. Consider a system that has multiple processors where eachprocessor has its own cache, but main memory is shared among allprocessors.1. a) Which cache write policy would you use?2. b) The cache coherency problem. With regard to the systemjust described, what problems are caused if a processor has acopy of memory block A in its cache and a second processor,also having a copy of A in its cache, then updates mainmemory block A? Can you think of a way (perhaps morethan one) of preventing this situation, or lessening itseffects?

. Consider a system that has multiple processors where eachprocessor has its own cache, but main memory is shared among allprocessors.1. a) Which cache write policy would you use?2. b) The cache coherency problem. With regard to the systemjust described, what problems are caused if a processor has acopy of memory block A in its cache and a second processor,also having a copy of A in its cache, then updates mainmemory block A? Can you think of a way (perhaps morethan one) of preventing this situation, or lessening itseffects?

Computer Networking: A Top-Down Approach (7th Edition)
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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. Consider a system that has multiple processors where each
processor has its own cache, but main memory is shared among all
processors.
1. a) Which cache write policy would you use?
2. b) The cache coherency problem. With regard to the system
just described, what problems are caused if a processor has a
copy of memory block A in its cache and a second processor,
also having a copy of A in its cache, then updates main
memory block A? Can you think of a way (perhaps more
than one) of preventing this situation, or lessening its
effects?

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