Which one is not one of the advantages of direct mapped cache against to 4-way set associative cache? A) Needs less harware to impelement B) Hit time of direct mapped would be shorter as there is only one block to which a data of physical adress can be matched C) Two squential read to 2 different addresses matching the same cache block will result in that there won't be a cache hit so the performance will drop D) It is less expensive and simplier than 4-way associative mapping E) Using direct mapped will take more advantage of spatial locality

Q: 3) Assume that there is a cache with 4 blocks and the block size is 1 byte (in total only 4B cache).…

A: Lets see the solution  in  the next steps

Q: 23 Which of the following statements about cache write policy is NOT true?   a. A dirty bit is…

A: Cache write policy means data is updated in cache first. It is not immediately updated back in…

Q: Q.A direct-mapped cache consists of 8 blocks. Byte-addressable main memory contains 4K blocks of 8…

A: Direct-mapped cache: Number of blocks in cache = 8 = 23 Number of blocks in Main memory = 4K = 212…

Q: For a direct-mapped cache design with a 32-bit address, the following bits of the address are used…

A: Given: 32 bits.   (A) 32 bits = 4 bytes and we will assume byte addressable memory.As the offset…

Q: 32 bytes of memory.  16 bytes of set-associative cache, where blocks can go anywhere within the set.…

A: Computer system memory that are used to store or the data or the program with the sequences of the…

Q: Please help me in this question: 20/ The purpose of a Translation Look-aside Buffer (TLB) is…

A: Correct Option is:           to cache page table entries

Q: 7. Information can be retrieved fastest from: A) hard disk. B) magnetic tape. C) optical disk. D)…

A: As per bartleby guidelines we need to answer only first 3 questions. 7. Information can be retrieved…

Q: Consider a single-level cache with an access time of 5 ns, a block size of 128 bytes and a hit ratio…

A: For referring a word from main memory, we need to shift a 128 B from main memory to cache since…

Q: The padding technique is effective to remove false sharing, but it requires consuming more memory in…

A: False sharing is a well-known performance issue on SMP systems, where each processor has a local…

Q: A computer uses a set - associative cache with 8 - blocks per set . 1. How many bits will be used…

A: 1. LRU stands for Least Recently Used Algorithm. It is a type of block replacement algorithm which…

Q: In the event of an unsatisfied cache request, what should happen to the block being sent to the main…

A: Unsatisfied: To be unsatisfied is to lack enjoyment or contentment with respect to something.…

Q: Q-10: Assume byte-addressable main memory has address size of 24 bits. For a 2-way-set-associative -…

A: Since question contains multiple sub-parts, we will answer for first three sub-parts. If you any…

Q: السؤال Any memory location can be stored anywhere in the cache (almost never implemented).: الاجابات…

A: Replacement policy: strategy for choosing which cacheentry to throw out to make room for a new…

Q: Q.A direct-mapped cache consists of 8 blocks. Byte-addressable main memory contains 4K blocks of 8…

A: The main memory contains 4k blocks 4k= 2^12 blocks * 2^3 words which is equal to 2^15 words in main…

Q: Assume there are three small caches, each consisting of four one word blocks. One cache is fully…

A: Assume there are three small caches, each consisting of four one word blocks. One cache isfully…

Q: Typically, miss rate, miss penalty, hit time, and bandwidth are the main metrics to evalu the…

A: RAM has two type of memory  1.Primary or main memory 2.secondary memory To improve the average time…

Q: A two-way set associative cache memory uses blocks of four words. The cache can accommodate a total…

A: Given: Main memory size= 4096  x 16 bits. Cache size= 512 words a) Solution: Since word size is not…

Q: Cache Mapping Technique 1. Suppose a computer using direct-mapped cache has 2 bytes of…

A:

Q: For a direct-mapped cache design with 64-bit addresses, the following bits of the address are used…

A: As per our guidelines we are supposed to answer first 3 parts of the question. please re upload 4th…

Q: Assume you have a 8-way set associative cache having 16K lines each having capacity of 8 Bytes. A…

A: A.  Block size = 8 bytes So # of data bytes brought= size of block = 8

Q: Describe the differences between sequential access, direct access and random access? How does the…

A: Describe the differences between sequential access, direct access and random access? In sequential…

Q: A direct-mapped cache is designed to store four words per cache line. It has 256 cache lines.…

A: Block size = 4 words = 4*4B = 16B So block offset bits is log 16=4 bits

Q: “Prefetching” is a technique that leverages predictable address patterns to speculatively bring in…

A: To improve the system performance prefetching technique is used. In this technique, the required…

Q: Q20: Assuming an initially empty 2-way set associative cache with a block size of 2 words and a…

A: STEP BY STEP COMPLETE SOLUTION REGARDING YOUR PROBLEM

Q: A two-way set associative cache memory uses blocks of four words. The cache can accommodate a total…

A: Hey, since multiple questions posted, we will answer first question according to our policy. If you…

Q: 1. Suppose physical addresses are 30 bits wide. Suppose there is a cache containing 256K words of…

A: Given that, Physical address length = 30 bits Cache size= 256K words= 218 words Block size= 4 words=…

Q: pletely as

A: Each block in main memory can be placed anywhere in the cache in a full associative cache…

Q: Assume a direct-mapped cache that holds 4096 bytes, in which each block is 16 bytes. Assuming that…

A: Total cache size =4086 bytes                          =212 bytesblock size=16 bytes…

Q: Consider a cache with 4 blocks and assume that each block is one word. Give a short sequence of word…

A: Total number of blocks inside cache = 4 Cache is 2 way set associative so total number of set inside…

Q: A. Does a set-associative cache need extra bits to represent how long a particular cached word has…

A: Set-associative Mapping – This mapping is the extended version of direct mapping where the demerit…

Q: 3. cache Assume a starting state with nointeresting data in the cache. Putan H in each box that…

A: The answer is

Q: Average memory access time (AMAT) is an important metric for evaluating memory/cache performance and…

A: For Average Memory Access Time(AMAT) = Hit Time + (Miss Rate) * (Miss Penalty) Need to explain : 1.…

Q: [15] For a direct mapped cache design with 32-bit address, the following bits of the address are…

A: A. a. Block size / cache line = 2 offset bits                 = 2 4 bytes= 16 bytes…

Q: A. Cache coherency and false sharing The simplest cache coherency protocol is MESI. Although cache…

A: Cache coherence:-  It is the uniformity of shared resource data that ends up stored in multiple…

Q: ain why it's difficult to design a universal cache replacement technique that works for all possible…

A: Explanation: Cache algorithms (also known as cache replacement algorithms or cache replacement…

Q: 6. Assuming a direct mapped cache with 16 cache line with each 4 word blocks, label the following…

A: Here, we are given a direct mapped cache with 16 cache lines and each 4 word blocks. We have to…

Q: Assume a cache has 16 entries. How many index bits are needed to address the cache?   a. 2   b.…

A: As per the answering guidelines solving the first question completely.

Q: For a direct-mapped cache design with a 32-bit address, the following bits of the address are used…

A:

Q: Q3) A computer system has 1 Mbyte of main memory, 16 bytes block size, and 64 Kbytes cache memory.…

A:

Q: Given 256 GB of physical memory, a 2-way set associative cache that is 128 KB in size with a block…

A: Ans.1:  16 bytesEach block has 16 bytes. Calculate the number of bits in the TAG, SET, and OFFSET…

Q: A computer uses a set-associative cache with 8-blocks per set.   How many bits will be used for…

A: Actually, LRU stands for Least Recently Used.

Q: The series of memory address references given as word addresses are 122, 126, 126, 126, 116, 300,…

A: We are given a direct mapped cache with 8 cache lines and given series of memory address references.…

Q: What does write back mean in terms of cache? Group of answer choices   a. When an error occurs in…

A: The correct answer of the following question is:

Q: For a direct-mapped cache with 64KIB data, 8-word blocks, and 32-bit addresses, answer the following…

A: a) The number of blocks/lines in the cache.   b) The bits in the 32-bit address that are used as…

Q: 7. The effectiveness of the cache memory is based on the property of A.Locality of reference…

A: Answer: We need to write the about the operating system and based in this we will do some question…

Q: Assume there are three small caches, each consisting of four one-word blocks. One cache is fully…

A: Solution  Fully Associated 4- caches block    number or miss = 3

Q: 5. The Average Memory Access Time equation (AMAT) has three components: hit time, miss rate, and…

A: As per guidelines I can answer only three sub-parts of first question. I hope you will understand.…

Q: 1d) The timing for a particular cache is as follows: Checking the cache takes 1 cycle. If there is a…

A: Below I have Provided the handwritten solution of the given question:

Q: Consider a 2-block fully associative cache. The following blocks from main memory are accessed which…

A: Given, The cache is a 2-block fully associative cache. Number of blocks in the cache = 2 The blocks…

Fundamentals of memory

A collection of connected storage devices form the memory unit. It is a space to store data and instructions required for processing. Information is stored in a memory unit in the form of bits. There are two types of memory namely: