'Direct mapped' presentation slideshows

Cache Based Iterative Algorithms

Cache Based Iterative Algorithms. Ulrich Ruede and C.C. Douglas Lehrstuhl fuer Systemsimulation, Uni Erlangen/ University of Kentucky With help of J.Hu, M.Kowarschik, G. Haase, W. Karl, H. Pfaender, L.Stals, D.T. Thorne, N. Tuerey, and C.Weiss Leibniz-Rechenzentrum Muenchen

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Memory Management Unit

Memory Management Unit. The Memory System. Embedded systems and applications The memory system requirements: vary considerably Simple blocks Multiple types of memory Caches Write buffers Virtual memory. Memory management units. Memory management unit (MMU) translates addresses:

1.28k views • 52 slides

CS252 Graduate Computer Architecture Lecture 7 Cache Design (continued)

CS252 Graduate Computer Architecture Lecture 7 Cache Design (continued). Feb 12, 2002 Prof. David Culler. How to Improve Cache Performance?. 1. Reduce the miss rate, 2. Reduce the miss penalty, or 3. Reduce the time to hit in the cache. . Where to misses come from?.

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Caches 2

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Chapter Seven Memory Hierarchy-2 by Patterson

Chapter Seven Memory Hierarchy-2 by Patterson. Hits vs. Misses. Increasing the block size usually decrease the miss rate and my go up eventually if the block size becomes a significant fraction of the cache size. Why?. Hits vs. Misses. Because:

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Cache Improvements

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Memory Hierarchy

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CPUs

CPUs. Caches. Memory management. Cache operation. Many main memory locations are mapped onto one cache entry. May have caches for: instructions; data; data + instructions ( unified ). Memory access time is no longer deterministic. address. data. cache. main memory. CPU. cache

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Up to 2

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Cache Memory

Cache Memory. Ilam University. Types of Memory. Memory Hierarchy. CAPACITY. SPEED and COST. Registers. On-Chip SRAM. Off-Chip SRAM. DRAM. Disk. Why Memory Hierarchy?. Need lots of bandwidth Need lots of storage 64MB (minimum) to multiple TB Must be cheap per bit

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CPE 232 Computer Organization Cache Introduction

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ECE232: Hardware Organization and Design

ECE232: Hardware Organization and Design. Part 15: Cache Chapter 5 (4 th edition), 7 (3 rd edition) http://www.ecs.umass.edu/ece/ece232/. Cache addressing. Memory. Cache. To Processor. How do you know if something is in the cache? (Q1) If it is in the cache, how to find it? (Q2)

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Cache Memory

Cache Memory. Ilam University. Types of Memory. Memory Hierarchy. CAPACITY. SPEED and COST. Registers. On-Chip SRAM. Off-Chip SRAM. DRAM. Disk. Why Does a Hierarchy Work?. Locality of reference Temporal locality Reference same memory location repeatedly Spatial locality

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CS 3410 - Spring 2014 Prelim 2 Review

CS 3410 - Spring 2014 Prelim 2 Review. Prelim 2 Coverage. Calling Conventions Linkers Caches Virtual Memory Traps Multicore Architectures Synchronization. Calling Convention. Prelim 2, 2013sp, Q5: Translate the following C code to MIPS assembly:.

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Multilevel Memory Caches

Prof. Sirer CS 316 Cornell University. Multilevel Memory Caches. Storage Hierarchy. SRAM on chip. Technology Capacity Cost/GB Latency Tape 1 TB $.17 100s Disk 300 GB $.34 4ms DRAM 4GB $520 20ns SRAM off 512KB $123000 5ns SRAM on 16 KB ??? 2ns

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November 14th, 2007 Majd F. Sakr msakr@qatar.cmu qatar.cmu/~msakr/15447-f07/

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Caches – basic idea

Caches – basic idea. Small, fast memory Stores frequently-accessed blocks of memory. When it fills up, discard some blocks and replace them with others. Works well if we reuse data blocks Examples: Incrementing a variable Loops Function calls. Why do caches work. Locality principles

183 views • 9 slides