Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Q. Major problems associated in writing with cache memories?
The data in main and cache memory can be written by processors or I/O devices. The major problems associated in writing with cache memories are:
a) The contents of cache and main memory can be changed by more than one device. For illustration CPU can write to caches and I/O module can directly write to main memory. This can result in inconsistency in values of main and cache memory.
b) In case of multiple CPUs with different cache a word changed in one cache automatically invalidates that specific word in other cache as well.
The proposed schemes for writing in system with caches are:
(a) Write through: Write the data in main memory as well as cache memory. The other CPUs - Cache combination has to watch with traffic to main memory and make appropriate modification in contents of cache. The drawback of this scheme is that a bottleneck is created because of large number of accesses to main memory by different CPUs.
(b) Write block: In this technique updates are made only in cache, setting a bit known as Update bit. Only those blocks whose update bit is set is replaced in main memory. However here all accesses to main memory whether from other CPUs or I/O modules required from cache resulting in complex circuitry.
(c) Instruction Cache: An instruction cache is one that is used for accessing only instructions and nothing else. Benefit of such a cache is that as instructions don't change we do not need to write instruction cache back to memory unlike data storage cache.
Ferroelectric RAM is a random-access memory same in construction to DRAM but uses a ferroelectric layer rather of a dielectric layer to achieve non-volatility. FeRAM is one of a gr
Information Gain: Now next here instantly return to the problem of trying to determine the best attribute to choose for a particular node in a tree. As in the following measur
What is branch folding? The instruction fetch unit has implemented the branch instruction concurrently with the implementation of other instructions. This technique is referred
Common Tasks to Accomplish: Once you've worried about what and why you're doing "AI", what has inspired you and how you're going to approach the job, then you just start to th
This assignment is based on the 'Swansea Docklands Heritage Society' case study attached. The assignment is the third of three related submissions, all based on the Swansea Dockla
Write a main function that opens an ifstream on the input file, "person.dat". If the stream cannot be opened, output an error message and exit. The file format is as foll
Use linear activation function and Hebbian learning for a SLFF network to attempt to learn the following two sets of patterns. Why can the patterns be learned, or why can they not
Consider the situation in which the disk read/write head is currently located at track 45 (of tracks 0-255) and moving in the positive direction. Assume that the following track re
A source is an object that produces an event. This happens when the internal state of that object changes in some way. A listener is an object that is notified when an event happen
Like a normal read, your input should break on the new line character "\n" and also on the up and down arrow keys. You will process the input made by the user when he/she enters
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd