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PDF
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... of 150Mbits/sec. Data rates of this magnitude would consume a lot of the bandwidth, storage and computing resources in the typical personal computer. For this reason, Video Compression standards have been developed to eliminate picture redundancy, allowing video information to be transmitted and sto ...
DCC: Double Capacity Cache Architecture for Narrow
DCC: Double Capacity Cache Architecture for Narrow

Lecture 10: Memory Hierarchy
Lecture 10: Memory Hierarchy

... • Reduce conflict misses and hit time • Way prediction block predictor bits are added to each block to predict the way/block within the set of the next cache access the multiplexor is set early to select the desired block; only a single tag comparison is performed in parallel with cache reading; a m ...
MPSoC
MPSoC

... Targeted for layer-4 through layer-7 network applications Designed for power efficiency Components (Hardwired) ...
Chapter 1: The Foundations: Logic and Proofs - Help-A-Bull
Chapter 1: The Foundations: Logic and Proofs - Help-A-Bull

... – One memory access to fetch the instruction – A second memory access for load and store instructions ...
Reducing Leakage Power in Peripheral Circuit of L2 Caches
Reducing Leakage Power in Peripheral Circuit of L2 Caches

... put L2 in stand-by mode N cycles after a cache miss occurs enable it again M cycles before the miss is expected to compete Independent instructions execute during the L2 miss service L2 can be accesses during the N+M cycles ...
PowerPoint
PowerPoint

... Inter sub-bank transitions are predicted to eliminate precharge overhead of drowsy sub-banks Bitline leakage is reduced by 88% using on-demand gated precharge The targets of conditional branches are usually within the same sub-bank ...
Study Guide
Study Guide

...  Computation of the impact of cache misses on CPI  Multilevel cache organization and operation  Write-through vs. writeback design – how are they different and how does each one impact the CPI?  Apply an address sequence to a multilevel cache hierarchy  Compute the size of the page table  Oper ...
bYTEBoss terms4
bYTEBoss terms4

... computer microprocessor can access more quickly than it can access regular RAM. As the microprocessor processes data, it looks first in the cache memory and if it finds the data there (from a previous reading of data), it does not have to do the more time-consuming reading of data from larger memory ...
The Memory Hierarchy
The Memory Hierarchy

... There can also be separate caches for data and instructions. Or the cache can be “unified” In the 5-stage MIPS pipeline ...
Backup-of-StudyGuide
Backup-of-StudyGuide

... Memory and Virtual Memory  Describe (with examples) spatial and temporal locality  Describe how a set associative cache works, and by extension fully associative and direct mapped caches  Address breakdown for all caches  DRAM organization and computation of miss penalties  Computation of the i ...
7810-13
7810-13

... • Each line has a 2-bit counter that gets reset on every access and gets incremented every 2500 cycles through a global signal (negligible overhead) • After 10,000 clock cycles, the counter reaches the max value and triggers a decay • Adaptive decay: Start with a short decay period; if you have a qu ...
pacs03 - University of Utah
pacs03 - University of Utah

... are critical  Younger instructions are likely to be on mispredicted paths or can tolerate latencies  N can be varied based on program needs  Minimal hardware overhead  Behavior comparable to more complex metrics ...
Computers: Tools for an Information Age
Computers: Tools for an Information Age

... • Secondary storage, such hard drive ...
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Cache (computing)



In computing, a cache (/ˈkæʃ/ KASH, or /ˈkeɪʃ/ KAYSH in AuE) is a component that stores data so future requests for that data can be served faster; the data stored in a cache might be the results of an earlier computation, or a duplicate of data stored elsewhere. A cache hit occurs when the requested data can be found in a cache, while a cache miss occurs when it cannot. Cache hits are served by reading data from the cache, which is faster than recomputing a result or reading from a slower data store; thus, the more requests can be served from the cache, the faster the system performs.To be cost-effective and to enable efficient use of data, caches are relatively small. Nevertheless, caches have proven themselves in many areas of computing because access patterns in typical computer applications exhibit the locality of reference. Moreover, access patterns exhibit temporal locality if data is requested again that has been recently requested already, while spatial locality refers to requests for data physically stored close to data that has been already requested.
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