PPT-Cache Memory and Performance Many of the following slides are taken with permission

Cache Memory and Performance Many of the following slides are taken with permission from Complete Powerpoint Lecture Notes for Computer Systems A Programmers Perspective CSAPP Randal E Bryant. Client sends HTTP request 2 Web Cache responds immediately if cached object is available 3 If object is not in cache W eb Cache requests object from Application Server 4 Application Server generates response may include Database queries 5 Applicatio Here we focus on cache improvements to support at least 1 instruction fetch and at least 1 data access per cycle. With a superscalar, we might need to accommodate more than 1 per cycle. Typical server and . the Measurement of Memory Systems. Xian-He Sun . Dawei. Wang. November 2011. Memory Wall Problem. . µProc 1.52/yr. .. (2X/1.5yr). Processor-Memory. Performance Gap:. (grows 50% / year). DRAM. 7. for 3D memory systems. CAMEO. 12/15/2014 MICRO. Cambridge, UK. Chiachen Chou, Georgia Tech. Aamer. . Jaleel. , Intel. Moinuddin. K. . Qureshi. , Georgia Tech. Executive Summary. How to use . S. tacked DRAM: Cache or Memory. Memory and Performance. Many . of the following slides are taken with permission from . Complete . Powerpoint. Lecture Notes for. Computer Systems: A Programmer's Perspective (CS:APP). Randal E. Bryant. Memory Wall . The . growing disparity of speed between CPU and memory outside the CPU . chip. Bandwidth wall: limited . communication bandwidth beyond chip . boundaries. Solution . Memory hierarchy . Hierarchy with Hi-Spade. . Phillip B. Gibbons. Intel Labs Pittsburgh. September 22, 2011. Abstract. The . goal of the Hi-Spade project is to enable a hierarchy-savvy approach to algorithm design and systems for emerging parallel hierarchies. Good performance often requires effective use of the cache/memory/storage hierarchy of the target computing platform. Two recent trends---pervasive multi-cores and pervasive flash-based SSDs---provide both new challenges and new opportunities for maximizing performance. The project seeks to create abstractions, tools and techniques that (. Managed jointly by CPU hardware and the operating system (OS). Programs share main memory. Each gets a private virtual address space holding its frequently used code and data. Protected from other programs. With a superscalar, we might need to accommodate more than 1 per cycle. Typical server and . m. obile device. memory hierarchy. c. onfiguration with. b. asic sizes and. access times. PCs and laptops will. 1 Memory & Cache Memories: Review 2 Memory is required for storing Data Instructions Different memory types Dynamic RAM Static RAM Read-only memory (ROM) Characteristics Access time Price Volatility Aditya Shah. Recitation 7: Oct . 8. th. , 2015. Welcome to the World of Pointers !. Outline. Schedule. Memory . organization. Caching. Different . types of locality. Cache organization. Cache lab. Part (a) Building Cache Simulator. The basic objective of a computer system is to increase the speed of computation. Likewise, the basic objective of a memory system is to provide fast, uninterrupted access by the processor to the memory such that, the processor can operate at its expected speed. . Hagersten. , . Landin. , and . Haridi. (1991). Presented by Patrick . Eibl. Outline. Basics of Cache-Only Memory Architectures. The Data Diffusion Machine (DDM). DDM Coherence Protocol. Examples of Replacement, Reading, Writing. Stephan Meier. Some slides authored by Tyler Huberty, Onur Mutlu (used with permission). Prefetching. Outline. Outline. Motivation. Instruction prefetching. Data prefetching. Research directions. A few definitions before we start….