A computer has an average main memory access time of 60 ns. We want to reduce this time to 20 ns by adding a cache, Determine how fast the cache must be (hit time) if we can expect a 90% hit rate of the cache, Show all your work-to get full credit. (Hint: Average memory access time equation)

Q: A CPU's clock rate is 4 GHz. This CPU's cache hit time is measured as 1 clock cycle, the miss…

A:

Q: Assume that we are having a computer with the following characteristics: 1MB of main memory; word…

A: Introduction Given,  cache size =64 KB,  4-way cache  main memory size= 1 MB  word size= 1Byte…

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: If random access memory (RAM) and cache memory both consist of transistors, then why do we need…

A: RAM (Random Access Memory): The hardware in a computer device called RAM (Random Access Memory)…

Q: Design a cache with cache size of 128K bytes, block (line) size of 8 words, and word size of 4…

A: Introduction: Cache mapping is a mechanism for transferring data from the main memory.  There are…

Q: alculate the hit time at L2 cache in a 1.3GHz. processor assuming that the global average memory…

A: Given Data : Frequency = 1.3 GHz Average memory access time =  5.81 cycles Hit rate at L1 =  0.91%…

Q: The memory access time is 1 nanosecond for a read operation with a hit in cache, 5 nanoseconds for a…

A: Introduction :Introduction:-            Given,                   mamory accross time = 1ns (Read)…

Q: Cache memory systems are designed such that the computer first checks the L1 cache for the desired…

A: According to the information given:- We have to follow the instruction in order to get how long on…

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: In the event that a request cannot be fulfilled by the cache, the processor will submit a request to…

A: given So what precisely should happen when a processor submits a request that cannot be processed in…

Q: sor, a read requ nanoseconds on was observed tha he hit.

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Q: chine is X ative cache

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Q: A CPU is equipped with a cache. If it takes 4 ns to access the data from the cache and 200 ns to…

A: Effective memory access time = hit ratio * cache access time + miss ratio * memory access time…

Q: Suppose a computer using fully associative cache has 224 bytes of byte-addressable main memory and a…

A: Given: The computer is using fully associative cache. Size of the main memory =  224 Bytes Size of…

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Q: In an x86-64 system, how many shorts can be stored in a cache block if your cache is 8KB (total…

A: To answer this question, we need to know how many bytes are in a short, how many bytes are in a…

Q: If the request is too large to fit in the cache, the CPU will send it to the main memory, and the…

A: Definition: They were given. So what precisely should happen when a processor submits a request that…

Q: Let's pretend for a moment that we have a byte-addressable computer with 16-bit main memory…

A: The hierarchy of virtual memory in current computer systems is a sophisticated network of caches and…

Q: Suppose a computer using fully associative cache has 224 bytes of byte-addressable main memory and a…

A: Size of main memory = 224 bytes Size of cache= 128 bytes = 27 bytes Size of each block= 64 bytes =…

Q: A processor has an 30-bit physical address space (A memory address is 30-bit). It also has a…

A: I have answered all the 3 parts and have provided detailed solution in the image.  First we will…

Q: Given a byte-addressable computer with a cache that holds 4 blocks of 2 bytes each. Assuming that…

A: question 1 Assuming that each memory address has 8 bits, the address format for the cache would be…

Q: e access tim ess time of c -1 is thrice th ty from the L ock cycles. T of the system

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Q: 4. Consider a 64K L2 memory and a 4K L1 4-way associative cache with block sizes of 512. a. How many…

A: Here we calculate the followings terms by using the given information and conclude the answer , so…

Q: Suppose a computer using fully associative cache has 216 bytes of byte-addressable main memory and a…

A: The computer is using fully associative cache. Size of the main memory = 216 bytes Size of the block…

Q: A CPU is equipped from the main mem

A: This is solved as follows

Q: 3. Time requ ratio is 0.90C access a wc

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Q: If the request is too large to fit in the cache, the CPU will send it to the main memory, and the…

A: Given:  So, precisely what should happen when a processor sends a request that fails to be fulfilled…

Q: that in 1000 memory references there are 50 misses in the first-level cache, 20 misses in the…

A: According to the question, we have to find average memory access time. In step 2, we will find…

Q: If random access memory (RAM) and cache memory both consist of transistors, then why do we need…

A: Introduction: In terms of speed, cost, and proximity to the CPU, both RAM and cache offer benefits…

Q: Let's pretend for a moment that we had a byte-addressable computer with 2-way set associative…

A: Given computer with 2-way set associative mapping, 16-bit main memory addresses. 32 cache memory…

Q: Use the two-level memory equation in Appendix 1A to answer this question: A computer has a cache and…

A: In computer architecture, the performance of a system is intricately linked to the efficiency of its…

Q: When considering a direct mapped cache with memory that is byte addressable, how would you calculate…

A: Cache Memory: A cache memory is the quickest memory other than the register from which the CPU…

Q: An university student was trying improve the performance of one of the test computers. Computer…

A: Lets see the solution.

Q: What is the purpose of having cache memory if we already have RAM, which is a memory that is built…

A: Given: Cache memory eliminates RAM-CPU performance bottlenecks. In this situation, frequently used…

Q: Suppose a computer using direct-mapped cache has 2 bytes of byte-addressable main memory and a cache…

A: Given: The computer is using direct-mapped cache.   Size of the main memory = 220 bytes  Size of the…

Q: Consider a computer with a cache memory of 1024 blocks and a total size of 512K bits. This computer…

A: Provided the solution for all the above given questions with detailed step by step explanation as…

Q: a. What is the output of the following code? And why? try{ int x 2; tnt y = 0; int z x/yi…

A: Java Code: public class Main{ public static void main(String[] args) {  try{      int x = 2;…

Q: If the RAM has a two byte data word and address bits are grouped for direct mapping with a cache…

A: Balance bits = 5 bits so block offset = 5 pieces  Limit of square = 2^5 = 32 Bytes  Address =…

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: The processor will submit a request that cannot be met in the cache while the write buffer will…

A: given - So, what should happen if a processor submits a request to the cache that isn't completed…

Fundamentals of Input and Output Performance

The I/O subsystem is a component of computer system design that uses buses to assist communication between the Central Processing Unit, Computer Memory/Storage, and Input and Output Devices (that is known as peripheral devices). The I/O subsystem includes disc controllers, tape drives, discs, system buses, and other devices. The I/O database application reads and writes drives using the operating system windows I/O.