The access time of cache is 100 us, the access time of main memory is 90 us, and hit ratio is 95%, then access efficiency related to cache is
Q: A cache block has 64 kbyte. The main memory has latency 64 µsec and bandwidth 1 GBps. The total time…
A: Introduction Given , Cache block size = 64 KB Main memory latency = 64 microsec. Bandwidth = 1…
Q: A 4-way set associative cache memory consists of 128 blocks. The main memory consist of 32768 memory…
A: Given 4 way set associative . cache memory 128 bits main memory 32768 blocks each block has 512…
Q: A Processor has a 2-Way Set-associative cache size of 8 MiB, and uses blocks of 64 bytes. It also…
A: Here in this question we have given Cache size =8MiB Block size =64B K way =2. Find - bit used for…
Q: The width of the physical address on a machine is 30 bits. The width of the tag field in a 64 KB, 16…
A: Given Data : Bits for physical address = 30 bits Width of tag field = 64 KB Set associativity = 16…
Q: Calculate the Effective Access Time (EAT) by assuming the Hit ratio (?) 95%. Cache Access Time (ε)…
A: Given, Hit ratio (?)= 0.95 Cache Access Time (ε)=20 microsecond Memory Access Time (T) = 100…
Q: A 2-way set-associative cache consists of four sets. Main memory contains 2K blocks of 8 bytes each…
A: The Associative caches allocate a set within the cache to each memory address, but not to any…
Q: A computer system has a memory access time of 120 ns. The hit rate is 96% and memory and cache…
A: Given:- Memory Access time(m) = 120 ns. Hit rate(x) = 96%=0.96 EMAT (Effective Memory Access time)…
Q: A cache line has 128 bytes The eain memory has latency 64s nd bandwidch IGB The tame required to…
A: The answer for time required to fetch the entire cache line is
Q: 1. A 64-bit word computer system employs an 8 MB cache. The address bus in this system is 38 bits.…
A: Question 1 : Word size = 8 bytes ; No of bits to represent word = 3 bitsNo of words in cache =…
Q: iss rate of 11.6% and the D-Cache has a miss rate of 16.1%. The miss penalty to L2 cache is 20…
A: consider a computer system with 2 levels of caches L1 and L2.L1 Cache has I cache and a D-cache. The…
Q: A 64 KB four-way set-associative cache is byte- addressable and contains 32B lines. Memory addresses…
A: Given: Memory address= 32 bits Cache Size=64KB = 216 bytes Block size=32 Bytes = 25 bytes 4 way set…
Q: Q2/ A direct mapping cache memory of 46 line main memory consists of 4K block of 128word 1. Show the…
A: Block size = 128Words = 128*4 = 512B So block offset bits = log 512 = 9 bits
Q: HOME WORK#2: If memory size = 16 KB. If cache size = 512 B. If block size = 8 B. Show address fields…
A: Here in this question we have given Main memory size =16KB Cache size = 512 B Blocks size = 8B…
Q: A certain processor uses a fully associative cache of size 16 kB. The cache block size is 16 bytes.…
A: The answer for the tag and index fields respectively in the addresses generated by the processor is
Q: A two way set associative cache can host 32 KB (Kilobyte) of memory data with 16-word block. The…
A: Given that, Cache size= 32 KB Block size= 16 W Number of bits in memory system= 32 In two way set…
Q: 2- Cache has only 3 lines for the memory blocks. The given memory block sequence. ( 7, 4, 2, 3 ,5,…
A: Given Data : Block Seqeunce : 7 , 4 , 2 , 3 , 5 , 3 , 2 , 1 , 2 , 7 Number of cache blocks = 3 LRU…
Q: Cache access time is 30 ns and main memory access time is 100 ns. What is the total memory access…
A: Effective memory access time = Cache hit ratio*(cache access time) + cache miss*(cache miss…
Q: Assume that a cache system has 12 bit of tag, 10 lines bit and 2 block offset bit. Determine the…
A: Solution:
Q: ed write-back cache i e blocks, each of size r generates 32-bit e controller maintain -ach cache…
A:
Q: A cache memory needs an access time of 30 ns and main memory 150 ns, what is the average access time…
A: Here hit rate = 0.80 = H Miss rate = 0.20 = (1- H) Cache access time = 30 ns = C Memory Access…
Q: A 32-bit address direct cache mapping with 2048 blocks in cache and each block has 16-bits in byte…
A: Introduction :Given , 32bit address direct mapped cache,number of blocks = 2048 each block has 16…
Q: Direct Mapping Cache Problem. Given a Windows XP machine (32-bit architecture) that is byte…
A: Cache memory is an intermediatory memory accessed by the CPU(Central Processing Unit) for fast…
Q: 3. A 4-way set-associative cache memory unit with a capacity of 16KB is buil: using a block size of…
A: Given :-A 4-way set-associative cache memory unit with a capacity of 16KB is built using a block…
Q: A computer has a 256 Kbyte, 4-way set associative, write back data cache with block size of 32…
A: 4-way set associative - 256 Kbyte Cache block size - 32 Bytes. Cache tag directory contains - 2…
Q: A computer system using the Relatively Simple CPU includes a 32-byte, 2-way set associative cache.…
A: Answer:
Q: A CPU has 32-bit address and an 8-way set associative 4MB cache with the cache block size of 64B, we…
A: Answer is given below-
Q: Assume that a system's memory has 128M bytes. Blocks are 64 bytes in length, and the cache consists…
A: The answer is
Q: What is the expected access time of an overlapped cache system that has the following properties? •…
A: Hit ratio = 98% Miss ratio = 2% Cache access time = 64ns Main memory access time = 37*10-3*10-6*106…
Q: A multiprocessor has a 3.3 GHz clock (0.3 nsec) and CPI = 0.7 when references are satisfied by the…
A: The answer is
Q: A 256 KB, direct-mapped write-back data cache with a block size of 32 Bytes is available on a…
A: A cache in the primary storage hierarchy contains cache lines that are grouped into sets. If each…
Q: Vhat is the Average Access Time for a machine with the Cache rate of 80% and cache ccess time of 5ns…
A: The answer is...
Q: A fully-associative cache consists of 64 lines, or slots. Main memory contains 1 M blocks of .32…
A: The Answer is (c) Tag = 20-bit, Word = 5-bit
Q: A memory system has 16M bytes. The memory is organized into blocks of 64bit/8 bytes each, and the…
A: Introduction :Memory size = 16 MBCache size = 512 KB block size = 8 B4 way set associative .We have…
Q: A computer has a 256 Ktytes, 4way set associative, write hack data cache with block size of 32…
A: The size of the cache tag directory is
Q: certain processor, a Read request takes 80 nano seconds on a niss and 10 nano seconds on a cache…
A: The answer is given below Ans =0.9 x 10 + 0.2 x 80 = 25
Q: A cache has a hit time Tc = 2 cycles and a miss rate Pmiss = 0.04. The main memory access time is…
A: Given, A cache hit time tc=2 cycles miss rate=0.04 main memory access time=36 cycle . Program has R…
Q: A 2-way set-associative cache consists of four sets. Main memory contains 2K blocks of 8 bytes each…
A: Given: No of lines in a set=2No of set in Cache = 4Block size=8 bytes Therefore, Size of each cache…
Q: A 64 KB four-way set-associative cache is byte- addressable and contains 32B lines. Memory addresses…
A: As per our guidelines we are allowed to answer only one question at a time. If you want answer of…
Q: A 16-way set-associative cache memory unit with a capacity of 32 KB is built using a block size of 8…
A: Introduction :Given , A cache associativity = 16 way cache size = 32 KB Block size = 8 words the…
Q: A computer has a 256 KHytes, 4-way set associative, write hack data cache with block size of 32…
A: According to the information given we have to find the number of bits in cache tag.
Q: For an 8-word wide cache with the following access times: L1: 10 bus cycles, L2: 500 bus cycles,…
A: An 8 word wide cache contains:- 8 * 4B= 32B : 1 word 4B Miss penalty = L1+L2*8 words =…
Q: Design a direct mapped cache with 1 MB of data and 6-word block size and assume a 33-bit address.…
A: DIRECT MAPPED CACHE: In this method ,each main memory address maps to exactly one cache block.
Q: How many kb of L1 cache if each core is consist of 64 kb L1 for instruction and 64 kb L1 for data in…
A: each L1 core is consist of 64 kb 64 kb L1 for data in a 6-core processor so 64 * 6 = 156 kb total…
Q: 64KB and each cache memory address. The the cache line of
A:
Q: (ii) multi-level cache
A: Given:- Elaborate the benefits for each of the following cache designs. (ii) Multi-level cache
Q: The access time of cache is 100 us, the access ime of main memory is 90 us, and h't ratio 's 35%…
A: Access time of cache = hit ratio of cache*cache access time + miss ratio of cache*memory access…
Q: Q: A set-associative cache has a block size of 256 bytes and a set size of 2. The cache can…
A: Please give positive ratings for my efforts. Thanks. ANSWER Here, number of bytes per cache…
Q: For a system, RAM - 64KB, Block size - 4 bytes, Cache size - 128 bytes, Direct mapped cache.…
A: Given:
Q: Compute Average Memory Access Time (AMAT) for a system that consists of a 2- level cache design.…
A: I'm providing the answer to above question. I hope this will be helpful for you
Step by step
Solved in 2 steps
- A computer system has a memory access time of 120 ns. The hit rate is 96% and memory and cache accesses don' t lap and affect each other. In order AMAT to be under 12 ns, what should the maximum cache access time be?Cache access time is 30 ns and main memory access time is 100 ns. What is the total memory access time ?The hit rate of the memory closest to the ALU is increased from 75% to 80% in a practical cache memory hierarchy. The hit latency (or hit time) for the closest memory is 20ps, while the miss latency is 20ns. What would the expected reduction in the average memory access latency be?
- Suppose the cache access time is 20ns, main memory access time is 100ns, and the cache hit rate is 90%. Assuming parallel (overlapped) access, what is the average access time for the processor to access an item?Suppose the cache access time is 10ns, main memory access time is 200ns, and the cache hit rate is 95%. Assuming parallel (overlapped) access (or say, load-through is used), what is the average access time for the processor to access an item?If memory read cycle takes 100 ns and a cache read cycle takes 20 ns, then for four continuous references, the first one brings the main memory contents to cache and the next three from cache. Find the time taken for the Read cycle with and without Cache? What is the Percentage speedup obtained?
- A 2-way set-associative cache consists of four sets. Main memory contains 2K blocks of 8 bytes each and byte addressing is used.Q.) 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.A two way set associative cache can host 32 KB (Kilobyte) of memory data with 16-word block. The memory system has 32 bits address bus. How many total bits does this cache have. (include 1 validation bit for each cache line, assume each word is one byte long).A computer has a 256 KB, K-way set associative write-back data cache with block size of 32 B. The address sent to the cache controller by the processor is of 32 bits. In addition to the address tag, each cache tag directory contains 2 valid bits and 1 modified bit. If 16 bits are used to address tag. What is the minimum value of K?
- Q2. A computer company finds that the average memory access time for its computers is 158 ns for benchmarks that have a 80% hit rate and with a main memory access time of 40ns. Is there a problem with their cache system q2 In which main memory block is memory address 2 A3 00 B3?Assume that a cache system has 12 bit of tag, 10 lines bit and 2 block offset bit. Determine the memory address bit organized by the cache and the number of lines in the cache. Show the working stepA CPU is equipped with a cache. Accessing a word takes 40 clock cycles if the data is not in the cache and 5 clock cycles if the data is in the cache. What is the effective memory access time in clock cycles if the hit ratio is 80%?