What dose Direct mapping? Used to store content and addresses of the memory word The RAM is used to store data and some of the data is stored in the Cache. The address space is divided into two parts index field and tag field. The tag field is used to store the tag field whereas the rest is stored in the main memory. Blocks of cache are grouped into sets, and the mapping allows a block of main memory to reside in any block of a specific set. Any block of Main memory can potentially reside in any cache block position. This is much more flexible mapping method.

What dose Direct mapping? Used to store content and addresses of the memory word The RAM is used to store data and some of the data is stored in the Cache. The address space is divided into two parts index field and tag field. The tag field is used to store the tag field whereas the rest is stored in the main memory. Blocks of cache are grouped into sets, and the mapping allows a block of main memory to reside in any block of a specific set. Any block of Main memory can potentially reside in any cache block position. This is much more flexible mapping method.

Microsoft Visual C#

7th Edition

ISBN:9781337102100

Author:Joyce, Farrell.

Publisher:Joyce, Farrell.

Chapter8: Advanced Method Concepts

Section: Chapter Questions

Problem 7RQ

See similar textbooks

Similar questions

Q__3.. ...Design a data structure that follows the constraints of a Least Recently Used (LRU) cache. Implement the LRUCache class: LRUCache(int capacity) Initialize the LRU cache with positive size capacity. int get(int key) Return the value of the key if the key exists, otherwise return -1. void put(int key, int value) Update the value of the key if the key exists. Otherwise, add the key-value pair to the cache. If the number of keys exceeds the capacity from this operation, evict the least recently used key. The functions get and put must each run in O(1) average time complexity. Example 1: Input ["LRUCache", "put", "put", "get", "put", "get", "put", "get", "get", "get"] [[2], [1, 1], [2, 2], [1], [3, 3], [2], [4, 4], [1], [3], [4]] Output [null, null, null, 1, null, -1, null, -1, 3, 4]... Code inly--+).
Code a descriptor that describes a data memory segment that grows upward and begins at location 03000000H and ends at location 05FFFFFFH and can be written. The memory has not been accessed, and can be accessed with the lowest privilege level. Assume that the segment is available (i.e., AV=1) and that the instructions are 32 bits (i.e., D=1).
cache.xls (or it can be a google sheet that you share with me in a cache.txt with the url in it )= a spreadsheet showing the cycle counts of a cached and non-cached machine. Also, you need to show the cache as the memory accesses progress in your program marking the hits and misses (misses in RED). You should have cells to show how many hits and how many misses your program has, and details on what is the cache replacement policy you implemented. Here is code: void c_cache_for_badge() { int na = 8, nb = -3, nc = 10; // pointers int *npa; npa = (int*)malloc(sizeof(int)*84); // init integer pointers for(int i = 0; i < 84; i++) { npa[i] = i; } // integer pointers for(int i = 9; i < 70; i= i + 3) { nb += npa[i % 5] + npa[i % 3] + npa[i % 6]; } } void main() { c_cache_for_badge(); }
Main memory size is 16 pages. Size of swap file on hard disk is 64 pages. Operating system locks down pages 0, 1, 2 and 7 in the main memory. Two programs are started and both are provided with a virtual address space of 10 pages. Initially operating system allocates 5 pages of main memory for each program and the rest from swap file. Virtual address space of each program starts from page 0. Construct page tables for both programs at program startup. A page table consists of P-bit which tells if the page is present in the main memory (1 = page is in main memory) and address of the page. Address tells either real address in main memory or the address of the page in swap file. b. A computer with a paged virtual memory system executes two load instructions that are adjacent to each other in memory. Describe the worst case scenario (in terms of performance) that can occur during the execution of the two instructions and explain under which conditions this case occurs. How does this affect…
Conflict Based on what we've learned about caches in this class, which of the following situations will cause two blocks to conflict? a) diff tag diff set, diff offset b) diff tag, diff set, same.offset c) diff tag same set, diff offset d) diff tag same set, same offset e) same tag diff set diff offset) f) same tag, diff set, same offset g) same tag, same set, diff offset h) same tag, same set, same offset please I need correct answers in 45 minutes I will give upvote
Differentiate between caches that are totally associative and those that are directly mapped.
What is the difference between a cache that is entirely associative and a cache that is directly mapped?
3. The series of memory address references given as word addresses are 122, 126, 126, 126, 116, 300, 116, and 118. Assume a direct-mapped cache with eight one-word blocks that is initially empty. Label each reference in the list as a hit or miss and show the contents of the cache with figure after each reference.
What memory blocks will be in the cache after the last address has been accessed?
This function will be able to look at which fields in a log entry that it needs to. When you use 64-byte cache blocks and don't prefetch, the following code calculates the average number of cache misses for each entry in the cache.
Q1:.
. Q: In this problem you are to compare reading a file using a single-threaded file server and a multithreaded server. It takes 15 msec to get a request for work, dispatch it, and do the rest of the necessary processing, assuming that the data needed are in a cache in main memory. If a disk operation is needed, as is the case one-third of the time, an additional 75 msec is required, during which time the thread sleeps. How many requests/sec can the server handle if it is single threaded? If it is multithreaded?