a) Why is the miss rate an ineffective statistic for assessing cache performance? What is the best metric to use? Give it a description. b) Why is it necessary to use a mix of first and second level caches rather than a bigger first level cache on the same chip?

a) Why is the miss rate an ineffective statistic for assessing cache performance? What is the best metric to use? Give it a description. b) Why is it necessary to use a mix of first and second level caches rather than a bigger first level cache on the same chip?

Systems Architecture

7th Edition

ISBN:9781305080195

Author:Stephen D. Burd

Publisher:Stephen D. Burd

Chapter6: System Integration And Performance

Section: Chapter Questions

Problem 10RQ

See similar textbooks

Related questions

Q: , define Tc= first-level cache access time= 0.2ns; Tm = memory access time= 0.8ns; H= first-level…

A: For a system with single level of cache, define Tc= first-level cache access time= 0.2ns; Tm =…

Q: Please solve given two questions in given figures please.

A: Cache misses: when an application or component requests for data from cache memory but it is not…

Q: I'm not sure what a cache is or how it works. Use parallelism, locality, or a mix of the two to…

A: Cache memory is an hardware or software component that saves previously utilized information in…

Q: Suppose you are assigned a task to design a cache memory that will be helpful to improve the overall…

A: Optimal Page Replacement algorithm:- This algorithm replaces pages that will not be linked in the…

Q: How many total bits are required for a direct-mapped cache with 24 KiB of data and 2-word…

A: 24 KiB = 24 * 1024 * 8 bits No. of words for a 32-bit address = 24 * 1024 * 8 / 32 = 196608 / 32 =…

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

A: Below is the answer to above question. I hope this will be helpful for you...

Q: Define the Cache Management ?

A: The cache manager is a lazy-loader in that it only caches records as they are read, rather than…

Q: most accurate way to modify the cache hardware to reduce the miss rate rather than changing the…

A: One of the most accurate ways to reduce the miss rate is by introducing Higher Associativity.…

Q: a) Explain what data is written to cache memory, on basis of what two factors does the cache memory…

A: As per guidlines we are suppose to answer first question : Answer: a. Cache Memory is a unique…

Q: Why should single-threaded, multi-threaded, and multiprogrammed workloads use shared vs. private L2…

A: Single threads are threads that execute a single instruction. To put it another way, the procedures…

Q: Given the following cache and cache configuration: 2-way set associative 4 byte cache line 32 byte…

A: Given size of cache= 32 Bytes Size of block = 4 bytes A. Number of cache blocks = size of cache /…

Q: Discuss what happens when a cache miss occurs. Does this result in a major slowdown in execution of…

A: GIVEN data is what happens when a cache miss occurs?

Q: For single, multi, and multiprogrammed work loads, talk about the advantages and downsides of shared…

A: Introduction: Single threads execute a single set of instructions. In other words, each order is…

Q: Assume a direct-mapped cache with 16 one-byte blocks. For each reference, list the binary address,…

A: Block size = 1 B So block offset = 0 bits Total number of block inside cache = 16 So index bits = 4…

Q: Describe the benefits and drawbacks of the two cache write policies that are available.

A: Introduction: Cache memory serves as a link between the CPU and the main memory. Cache memory is…

Q: Cache Performance Please answer the following questions regarding average memory access time (AMAT).…

Q: 5. Your system has an 8-way set associative cache and addresses and data of length 16 bits. The…

A: Since it is given that set index bits are 9, we have Total sets = 29 = 512

Q: For the following cache optimization, explain (1) what can be improved? miss rate miss penalty, or…

A: Cache organization

Q: How MMU is used to address the physical and logical cache arrangement? Explain the difference…

A: MMU(Memory Management Unit) is the hardware used to map the logical address into a physical address.…

Q: If T1 is L1 cache access time, T2 is L2 cache access time Tm is memory access time, h1 is hit rate…

A: Derivation: In cache memory, the average access time for single level cache organization is given…

Q: Consider a direct-mapped cache with 32-bit byte addresses divided into three fields Tag/Index/Offset…

Q: 3. Given a 32-byte cache (byte-addressable, initially empty) and a sequence of access address (6)10,…

Q: A memory system has a 32 KB byte-addressable main memory and a 1 KB cache where each block contains…

Q: What does it happen with the compulsory and coherence misses when you enlarge the caches? Are there…

A: Miss rates can be given in terms of : 1)local miss rates 2) global miss rates Local miss rates:The…

Q: 6: What is the difference between Write-Through and Write-Back Caches? Explain Evantages and…

A: cache: a cache is a hardware or software component that stores data so that future requests for that…

Q: address 32-bits) has 16-KB (only L1-data) direct mapped cache. If the cache line size is 64-Bytes…

A: For direct mapped cache, index bits = log(cache size/ block size) = Log(16KB/64) = 8 bits Block…

Q: What is a Cache, and what does it do? Use of parallelism and/or locality, or a combination of both,…

A: Introduction: Due to the dispersed L1 and L2 caches, Cache coherence is a problem in a multi-core…

Q: It's now possible to look at the benefits and drawbacks of shared and private L2 caches for single-,…

A: I have answered this question in step 2.

Q: Explain what a write-through cache modification and a write-back cache modification are, how they…

A: A processor that attempts to write a word examines the address for the availability of cache and…

Q: How would you compute the number of tag bits in a direct mapped cache with byte addressable memory…

A: Introduction: The fastest memory, other than the register from which the CPU fetches data and…

Q: Consider a 4MB 8-way set-associative cache with 64 byte block size for byte-addressable memory with…

Q: what a cache is or how it works

A: Cache Memory:A cache is a block of memory for keeping data which is likely used again. The CPU and…

Q: What is essential about a data cache? Under which conditions do caches work? Which key technical…

A: Given: What makes a data cache so important? What are the conditions under which caches work? What…

Q: Discuss about various types of mapping techniques used in cache memory management?

A: Mapping techniques There are three main mapping techniques used for the purpose of cache memory.…

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

A: Dear Student, address space = tag bits + index bits + block offset. Here we can calculate it simply…

Q: What role does MMU play in the physical and logical cache arrangement? Explain the difference…

A: Given: What role does MMU play in the physical and logical cache arrangement? Explain the difference…

Q: 1. What is the difference (or differences) between a TLB and on-chip cache? a. The TLB is…

A: CPU Cache is a fast memory which is used to improve latency of fetching information from Main…

Q: Q1 Calculate the total number of lines of "direct mapping" cache, If a main memory is 1G words…

A: Here in this question we have given main memory size of 1G words Block size = 32 words Find =…

Q: Caches have two characteristics, a read architecture and a write policy. Critically discuss the…

A: Answer:

Q: Whaqt are Issues with Writes in respect with cache memory ?

A: Issues with Writes in respect with cache memory

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: Re-compute the miss rate when the cache block size is 16 bytes, 64 bytes, and 128 bytes. What kind…

A: On a similar note, as explained above, the miss rate can be determined for other block sizes.…

Q: We shall compare different memory organizations based on the following assumptions: • all transfers…

A: Introduction :Given , Clock to send the address = 1clock for access time = 10 bus transfer = 1 clock…

Q: QUESTION THREE (4) (a) Explain what is the function of buffer. (b) Give THREE (3) advantages of…

A: Given:- QUESTION THREE (4) (a) Explain what is the function of buffer. (b) Give THREE (3) advantages…

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: Exactly which data fields are accessible to the supplied log processing function? The following code…

A: INTRODUCTION: DATA FIELD: A data field is a storage space for a specific type of data that, when…

Q: When a system has multiple levels of cache memory, L2 always has more memory than L1. Why is this…

A: As per our guidelines we are supposed to answer only one question. Kindly repost other questions as…

Question

a) Why is the miss rate an ineffective statistic for assessing cache performance? What is the best metric to use? Give it a description.

b) Why is it necessary to use a mix of first and second level caches rather than a bigger first level cache on the same chip?

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.

Similar questions

Explore the concept of cache memory in-depth. How do cache levels (L1, L2, L3) work, and what strategies are employed to improve cache hit rates and reduce cache misses?
What are write-through and write-back cache modifications, and how do they work in shared memory systems? What are the benefits and drawbacks of using each? The write-through cache is modified in two ways: by write-back cache changes and by direct cache updates.
What is essential about a data cache? Under which conditions do caches work? Which key technical term characterizes “good cache” performance? When does a data cache fail to speed up program execution?
Can you describe the challenges involved in developing a cache replacement strategy that is compatible with any and all address sequences?
The creator of a 4 KiB physically labeled and virtually indexed cache wants to increase its size. Is it possible to establish a 16 kilobyte direct-mapped cache with the above-mentioned page size and two words per block? How would the designer increase the cache's storage capacity?
Explain what a write-through cache modification and a write-back cache modification are, how they work in shared memory systems, and the benefits and drawbacks of using either strategy.
Whaqt are Issues with Writes in respect with cache memory ?
Explain what a write-through cache modification and a write-back cache modification are, how they function in shared memory systems, the advantages and downsides of employing either method, and which one is preferable and why.
Explain the differences between a write-through cache change and a write-back cache modification, how they function in shared memory systems, and the advantages and disadvantages of utilizing either method.
Discuss about various types of mapping techniques used in cache memory management?
Please explain the question below Objective: Show the influence of the cache size on the miss rate Development Configure a system with the following architectural characteristics: Processors in SMP = 1 Cache coherence protocol = MESI Scheme for bus arbitration = Random Word wide (bits) = 16 Words by block = 16 (block size = 32 bytes) Blocks in main memory = 8192 (main memory size = 256 KB) Mapping = Fully-Associative Replacement policy = LRU Configure the blocks in cache using the following configurations: 2(cache size = 0,03 KB), 4,8, 16, 32, 64, 128, 256, and 512 (cache size = 16 KB). For each of the configurations, obtain the miss rate using the trace files: Hydro, Naasa7, Cexp, Comp, and Wave. Are there conflict misses in these experiments? Why? In these cases, it may be observed that for great cache sizes, the miss rate is stabilized. Why? We can also see great differences in miss rate for a concrete increment of cache size. What do these great differences indicate?
Discuss the concept of "write-back" and "write-through" cache policies in the context of memory hierarchy. What are the differences between these policies, and how do they impact system performance?