Explain why 2 cache memories are often used, and why cache I is on the same chip as the CPU.
2 types of cache memory : L1 cache and L2 cache
L1 cache: is extremely fast but is small and is placed on processor chip on CPU
L2 cache: it is slow than L1 cache but is big compared to it. it has high speed alternative system bus connecting it with cpu hence it doesn't get slow by the traffic on system bus.
when ever cpu searching for a data it starts searching with L1 cache which is high speed and then goes to L2 cache and then through system bus to memory. Both L1 and L2 Cache increases speed of cpu. L1 cache is limited in size due to cost factor. l2 cache is cheaper compared to l1 and is of larger size compared to it increases scope of storing more data. hence , we you two cache memories. ex: for 3 misses in L1 cache there may be only miss in L2 cache. the L1 cache has 1ns access latency while L2 cache has 10ns access latency.
L1 cache is place on processor chips of cpu itself to access data without using system bus. The speed of bus is much slower than cache hence by skipping it we access speed of nanoseconds.
Explain why 2 cache memories are often used, and why cache I is on the same...
Operating Systems Questions (Please help if you can) 1. A computer has cache, main memory, and a disk used for virtual memory. If a referenced word is in the cache, 20ns are required to access it. If it is in main memory but not in the cache, 60ns are required to load it into the cache (this includes the time to originally check the cache), and then, the reference is started again. If the word is not in main memory,...
Explain why Standard Costs are often used in variance analysis.
Explain why Standard Costs are often used in variance analysis.
Based on what you’ve read, explain why adults may not have memories for experiences that occurred early in childhood.
Part 1: A pipelined computer completes instructions more quickly by having more than one instruction at a time "in the pipeline." Explain what problem branch instructions cause with instruction pipelining. Describe one approach to overcoming this problem. Part 2: RISC computers generally execute more instructions per second than CISC computers. Describe the penalty or trade-off paid when adopting the RISC architecture. Part 3: When a cache hit to a cache on the CPU chip occurs on a memory write the...
Vocabulary Exercises is the communication channel that connects all computer system components Cache types that are generally implemented on the same chip as the CPU include 3. thus controlling access to the bus by all other The CPU is always capable of being a(a) devices in the computer system. 4. An) is a reserved area of memory used to resolve differences in data transfer rate or data transfer unit size. 5. A(n) is an area of fast memory where data...
2. Cache hierarchy You are building a computer system with in-order execution that runs at 1 GHz and has a CPI of 1, with no memory accesses. The memory system is a split L1 cache. Both the I-cache and the D-cache are direct mapped and hold 32 KB each, with a block size of 64 bytes. The memory system is split L1 cache. Both the I-cache and the D-cache are direct mapped and hold 32 KB each, with a block...
Indicate whether the statement is true or false, and explain why. 1. Adding a cache never hurts performance.
Computer system designers look for ways to improve system performance by advances in technology or change in design. Examples include the use of parallel processors, the use of a memory cache hierarchy, and speedup in memory access time and I/O transfer rate due to technology improvements. Explain with reasons, which internal and external memories, and input/output will be used in your design to further improve computer system performance. Also, justify how you can organise/connect them all to maintain the computer...
please explain the answers so I can understand it. I cant find it in my book. 42. T or F? There is a linear relationship between the manufacturing cost of a chip and the chip's area. 43. T or F? The Mic-2 is a two-bus architecture. 44. T or F? Mic-3 is a pipelined CPU and so is Mic-2.