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computer achitucture


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#1 ustazhussein

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Posted 02 April 2017 - 12:38 AM

A Computer system with a cache has a physical memory with
Tp=75ns
, a hit ratio of
65 percent
, and an
average memory access time of
Tm = 39.9ns
. What is access time for the cache?
13.
A
Computer system has a cache with
Tc = 10ns
, physical memory with
Tp = 55ns
, and physical memory with
access time
Tm = 40ns
. What is the hit ratio?
14.
A Computer system has a cache with
Tc = 10ns
, a hit ratio of
80 percent
and an average memory access time
of
Tm = 24ns
. What is the access time for physical memory?
15.
Define
cache hit
and
cache miss
. A cache system has a 95 percent hit ratio, an access time of 100 nsec on a
cache hit and an access time of 800 nsec on a cache miss. What is the effective access time?
16.
A cache is being designed for a computer with 2
32
bytes of memory. The cache will have 2K slots and use a 16
-
byte block. Compute for both an associative cache and a direct
-
mapped cache how many bytes the cache will
occupy?


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#2 Platypus

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Posted 02 April 2017 - 03:22 AM

This reads like homework - if so your course material should be teaching you how to work this out.


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#3 Al1000

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Posted 02 April 2017 - 04:30 AM

This question appears to have been copied from Computer Science and Information Technology for GATE By N B Venkateswarlu

https://books.google.co.uk/books?id=iSiAAQAAQBAJ&pg=SA7-PA12&lpg=SA7-PA12&dq=Show+the+packets+sent+by+the+computer+to+perform+this+transfer.+What+is+the+total+number+of+bits&source=bl&ots=FWYD49sI4P&sig=iBTswb7M-QosuSdSOeZmfU4qC4U&hl=en&sa=X&ved=0ahUKEwjlqanYuYXTAhVIB8AKHYZyCQAQ6AEIIzAA#v=onepage&q=Show%20the%20packets%20sent%20by%20the%20computer%20to%20perform%20this%20transfer.%20What%20is%20the%20total%20number%20of%20bits&f=false

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