3) Assume that there is a cache with 4 blocks and the block size is 1 byte (in total only 4B cache). The cache is initially empty. For two different configurations of the cache; direct-mapped and 2-way set associative, given memory addresses are accessed in the given order. Write if given addresses are hit or miss in the cache. address: 3 - 11 - 0 - 3 - 11
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: 8. Assume a cache with a write-through policy, non-write allocate. Your cache has a miss rate of 4%.…
A: Given Miss rate=4%=0.04 Miss penalty=120 cycles The new penalty with extra cycles will be=120+30=150…
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: Caches are important to providing a high-performance memory hierarchy to processors. Below is a list…
A: Given: 180, 43, 2, 191, 88, 190, 14, 181, 44, 186, 253 calculate: For each of these references,…
Q: A cache has been designed such that it has 1024 lines, with each line or block containing 8 words.…
A: GIVEN THAT 20-bit address 3E9D216 Determine the line number, tag, and word position using the…
Q: Question 22 Assume that the cache memory is using first in first out (FIFO) strategy to replace…
A: In computing, cache algorithms (additionally frequently known as cache substitute algorithms or…
Q: write buffer to main memory when the processor makes a partially completed request to the cache
A: 1.The processor makes a request to the cache.2.The cache checks if the block is in the write…
Q: Part(c) : Assume a hypothetical system with eight 32-bit words cache and small Main memory of 1 KB…
A: the solution of part c is given below :
Q: list of 32-bit memory address references, given as words: 3, 180, 43, 2, 191, 88, 190, 14, 181, 44,…
A: In computing, a cache is a high-speed data storage layer which stores a subset of data, typically…
Q: 3-Virtual memory use a page table to track the mapping of virtual address to physical addresses. The…
A: Since each page is 4KiB = 212Bytes, the lower 12 bits of the address is the page offset and ignored…
Q: Suppose we have a memory and a 2-way set-associative cache with the following characteristics.…
A: Memory: The cache is split into sixteen sets of four lines every. Therefore, 4 bits area unit…
Q: 8. Assume that the cache size is 256kB, and each cache line is 64 Bytes. (1) Let us assume this is a…
A: Given: Cache size = 256kb = 218 Bytes Cache line size = 64 Bytes = 26 bytes
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: This challenging question tests your understanding of cache. Consider the following C code: int…
A: THE following Code int A[16]; int B[16]; int m; ... //A large chunk of code that does NOT access…
Q: 2. This problem concerns the cache shown below. Assume the following: • The memory is…
A: Here we have to find the data in address 01110101 , but as given in the question Addresses are 13…
Q: 1. cache behavior Consider an overly simplistic direct cache of 256 bytes arranged as 16 cache lines…
A: Solution- Number of cache lines = 16 = 24 Number of words in a line = 1 Size of RAM = 256 bytes =…
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: Question 1 Consider the size of main memory as 32 Bytes and the size of cache memory as 8 Bytes.…
A: NOTE: Since there are multiple Bits and it is not mentioned which bit to answer so i would prefer…
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: 2. Suppose a computer using direct-mapped cache has 232 bytes of byte-addressable main memory and a…
A: Given: Suppose a computer using direct-mapped cache has 232 bytes of byte-addressable main memory…
Q: For a system, RAM - 64KB, Block size - 4 bytes, Cache size - 128 bytes, Direct mapped cache.…
A: Given: RAM size = 64 KB Block size = 4 bytes Cache size = 128 bytes
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: 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: Please explain this 1,2, and 3 Consider following cache elements Cache can hold 64 kB Data are…
A: GIVEN: Please explain this 1,2, and 3 Consider following cache elements Cache can hold 64 kB Data…
Q: Recall that we have two write policies and two write allocation policies, and their combinations can…
A:
Q: Assume A and B are two distinct memory blocks and are mapped to two separate cache lines. Consider…
A: The answer as given below:
Q: Function NSU-1 For a system, RAM-64KB, Block size-4 bytes, Cache sine- 128 bytes, Direct mapped…
A: RAM -64 KB Block size -4 byte Cache size 128 byte Hit ratio while using direct mapped cache: To…
Q: Let the Cache and main memory divided into equalized partitions having 16 words. If cache has 256…
A: Given that, Number of cache blocks= 256 Number of main memory blocks= 4096 Size of each block= 16…
Q: 9. Below is a list of memory references given as word addresses Ox07, Oxb3, 0x5b, 0x07, 0xbf, 0xb3,…
A: a) In a direct mapped cache Logical Division of memory references is : TAG…
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: 3. cache Assume a starting state with nointeresting data in the cache. Putan H in each box that…
A: The answer is
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: We study the properties of cache memory, and for reasons of easier design and efficient circuits, we…
A: Let the total number of bits for main memory be m bits. C. Number of bits for byte offset is log…
Q: 1.) Consider the following series of address references, given as byte addresses: 4. 16, 32, 20, 80,…
A: Direct mapped don't use LRU ,while fully and set associative use LRU for page replacement.
Q: Assume the processor sends an incomplete request to the cache while a block is being returned from…
A: Introduction: The write buffer and the cache are entirely self-contained.The cache will be able to…
Q: D. The cache is always as big as the whole memon, How is an address in memory translated to a line…
A: Given: To choose the correct option.
Q: ume the following: • The memory is byte addressable. • Memory accesses are to 1-byte words (not to…
A: Block offset bits = 2 bits Set index bits = 3 bits For a hit in set 3, the tag bits should be 0x06…
Q: .2: Below is a list of 32-bit memory address references, given as word addresses. 3, 180, 43, 2,…
A: Given addresses are 3, 180, 43, 2. 191, 88, 190, 14, 181, 44, 186, 253. Size of the block = 1 word…
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: Suppose we have a memory and a 2-way set-associative cache with the following characteristics.…
A: SOLUTION: For 2-way set-associative cache. Number of cache lines= 64 Number of sets=64/2…
Q: (1) What's the average latency of a memory access? (2) What's the speedup rate of the access if the…
A: 1. Average Latency :=> (0.85 * 3)[if hit inL1] + (0.15) { {3+(0.90*20))[if miss in l1 and hit…
Q: 2. 3) Using the series of references given in the following table, show the hits and misses and…
A: In case of set associative cache we use relation p % s = i to map the memory block address to the…
Q: Below is a list of 32-bit memory address references, given as word addresses. 3, 180, 43, 2, 191,…
A:
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: 2-Caches are important to providing a high-performance memory hierarchy to processors. Below is a…
A: Note mentioned weather memory is byte addressable or word addressable given address is word address…
Q: Assume that you have a direct-mapped cache with 16 indices and each block can contain 32 words.…
A: A) Block size = 32 words = 32*4 = 128B So block offset bits = 7 bits Total number of set inside…
3) Assume that there is a cache with 4 blocks and the block size is 1 byte (in total only 4B cache). The cache is initially empty. For two different configurations of the cache; direct-mapped and 2-way set associative, given memory addresses are accessed in the given order. Write if given addresses are hit or miss in the cache.
address: 3 - 11 - 0 - 3 - 11
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 1 images
- For a direct-mapped cache design with 64-bit addresses, the following bits of the address are used to access the cache: Tag Index Offset 63-13 12-4 3-0 a. What is the cache block size (in bytes)?b. What is the cache size (in bytes)?c. What is the total number of bits (including valid bit, tag bits and data array bits) to implement this cache?d. For the same block and cache sizes, you want to implement a 4-way set-associative cache, what is the number of index bit and the number of tag bits?2-Caches are important to providing a high-performance memory hierarchy to processors. Below is a list of 32-bit memory address references, given as word addresses. a. For each of these references, identify the binary address, the tag, and the index given a direct-mapped cache with two-word blocks and a total size of 4 blocks. Also list if each reference is a hit or a miss, assuming the cache is initially empty. 42, 180, 46, 185, 189, 3, 181, 43, 6, 189, 65, 190 b. For each of these references, identify the binary address, the tag, and the index given a direct-mapped cache with four-word blocks and a total size of 4 blocks. Also list if each reference is a hit or a miss, assuming the cache is initially empty. c. For each of these references, identify the binary address, the tag, and the index given a two way associative cache with two-word blocks and a total size of 4 blocks. Also list if each reference is a hit or a miss, assuming the cache is initially empty d. For each of these…3. The table below represents five lines from a cache that uses fully associative mapping with a block size of 8. Identify the address of the shaded data, 0xE6, first in binary and then in hexadecimal. The tag numbers and word id bits are in binary, but the content of the cache (the data) is in hexadecimal. Word id bits Tag 000 001 010 011 100 101 110 111 ------------------------------------------ 1011010 10 65 BA 0F C4 19 6E C3 1100101 21 76 CB 80 D5 2A 7F B5 0011011 32 87 DC 91 E6 3B F0 A6 1100000 43 98 ED A2 F7 4C E1 97 1111100 54 9A FE B3 08 5D D2 88
- .2: Below is a list of 32-bit memory address references, given as word addresses. 3, 180, 43, 2, 191, 88, 253 For each of these references, identify the binary address, the tag, and the index given a direct- mapped cache with 16 one-word blocks. Also list if each reference is a hit or a miss, assuming the cache is initially empty. For each of these references, identify the binary address, the tag, and the index given a direct-mapped cache with 2-word blocks and a total size of 8 blocks. Also list if each reference is a hit or a miss, assuming the cache is initially empty. For each of these references, identify the binary address, the tag, and the index given a direct-mapped cache with 4-word blocks and a total size of 8 blocks. Also list if each reference is a hit or a miss, assuming the cache is initially empty.Suppose a computer using direct mapped cache has 232 byte of byte-addressable main memory, and a cache of 1024 blocks, where each cache block contains 32 bytes. a) How many blocks of main memory are there? b) What is the format of a memory address as seen by the cache, i.e., what are the sizes of the tag, block, and offset fields? c) To which cache block will the memory address 0x000063FA map?A cache is set up with a block size of 32 words. There are 64 blocks in cache and set up to be 4-way set associative. You have byte address 0x8923. Show the word address, block address, tag, and index Show each access being filled in with a note of hit or miss. You are given word address and the access are: 0xff, 0x08, 0x22, 0x00, 0x39, 0xF3, 0x07, 0xc0.
- Here is the question: A direct-mapped cache consists of 8 blocks. A byte-addressable main memory contains 4K blocks of eight bytes each. Access time for the cache is 20 ns and the time required to fill a cache slot from main memory is 300 ns. Assume a request is always started in sequential to cache and then to main memory. If a block is missing from cache, the entire block is brought into the cache and the access is restarted. Initially, the cache is empty. b) Compute the hit ratio for a program that loops 3 times from address 0 to 75 (base 10) in memory. For b, another example has been provided in regards to a previous problem: A direct-mapped cache consists of eight blocks. Main memory contains 4K blocks of eight words each. Access time for the cache is 22 ns and the time required to fill a cache slot from main memory is 300ns (this time will allow us to determine the block is missing and bring it into cache). Assume a request is always started in parallel to both cache and to…1. Caches are important to providing a high-performance memory hierarchy to processors. Below is a list of 32-bit memory address references, given as word addresses. 42, 137, 66, 50, 38, 225, 173, 22, 19, 88, 51, 43 a. For each of these references, identify the binary address, the tag, and the index given a direct mapped cache with 16 one-word blocks. Also list if each reference is a hit or a miss, assuming the cache is initially empty. b. For each of these references, identify the binary address, the tag, and the index given a direct mapped cache with two-word blocks and a total size of 8 blocks. Also list if each reference is a hit or a miss, assuming the cache is initially empty. Please explain the process.A direct-mapped cache consists of 16 blocks. A byte-addressable main memory contains 4K blocks of 16 bytes each. Access time for the cache is 30 ns and the time required to fill a cache slot from main memory is 250 ns. Assume a request is always started in sequential to cache and then to main memory. If a block is missing from cache, the entire block is brought into the cache and the access is restarted. Initially, the cache is empty. a) Show the main memory address format that allows us to map addresses from main memory to cache. Be sure to include the fields as well as their sizes. b) Compute the hit ratio for a program that loops 4 times from locations 0 to 42 (base 10) in memory. c) Compute the effective access time for this program.
- Q: A digital computer has a memory unit of 64k * 16 and a cache memory of 1k words. The cache uses direct mapping with a block size of 4 words. i) How many bits are there in the tag, index, block & words fields of the address formats. ii) How many bits are there in each word of cache? iii) How many blocks can the cache accommodate?5. Suppose a byte-addressable computer using set-associate cache has 2^21 bytes of main memory and a cache of 64 blocks, where each cache block contains 16 bytes. a) If this cache is 2-way set associative, what is the format of a memory address as seen by the cache; that is, what are the sizes of the tag, set, and offset fields? b) If this cache is 4-way set associative, what is the format of a memory address as seen by the cache; that is, what are the sizes of the tag, set, and offset fields?Suppose a computer using direct-mapped cache has 232 (that's 232)232) bytes of byte-addressable main memory, and a cache size of 512 bytes, and each cache block contains 64 bytes. How many blocks of main memory are there? What is the format of a memory address as seen by cache, i.e. what are the sizes of the tag, block, and offset fields? To which cache block will the memory address 0x13A4498A map?