'Disk access' presentation slideshows

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CSCE 411 Design and Analysis of Algorithms

CSCE 411 Design and Analysis of Algorithms. Set 4: Transform and Conquer Slides by Prof. Jennifer Welch Spring 2014. General Idea of Transform & Conquer. Transform the original problem instance into a different problem instance Solve the new instance

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What about the Network?

What about the Network?. CS 525 Spring 2009 Advanced Distributed Systems. End-to-End Arguments in System Design. J.. Saltzer , D.P. Reed and D.D. Clark M.I.T. Laboratory for Computer Science Presented by: Abdullah Al- Nayeem. Where to Place Functionalities?.

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Google Bigtable

Google Bigtable. Fay Chang, Jeffrey Dean, Sanjay Ghemawat, Wilson C. Hsieh, Deborah A. Wallach, Mike Burrows, Tushar Chandra, Andrew Fikes, Robert E. Gruber Google, Inc. OSDI 2006. Google Scale. Lots of data

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Scalable Multi-Access Flash Store for Big Data Analytics

Scalable Multi-Access Flash Store for Big Data Analytics. Sang-Woo Jun, Ming Liu Kermin Fleming*, Arvind Massachusetts Institute of Technology *Intel, work while at MIT. This work is funded by Quanta and Samsung. We also thank Xilinx for their generous hardware donations.

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B-Trees

B-Trees. Disk Storage What is a multiway tree? What is a B-tree? Why B-trees? Insertion in a B-tree Deletion in a B-tree. Disk Storage. Data is stored on disk (i.e., secondary memory) in blocks. A block is the smallest amount of data that can be accessed on a disk.

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B + -Trees (Part 1)

COMP171. B + -Trees (Part 1) . Main and secondary memories. Secondary storage device is much, much slower than the main RAM Pages and blocks Internal, external sorting CPU operations Disk access: Disk-read(), disk-write(), much more expensive than the operation unit. Contents.

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Hash-Based Indexes

Hash-Based Indexes. Jianlin Feng School of Software SUN YAT-SEN UNIVERSITY. Introduction. As for any index, 3 alternatives for data entries k*: Data record with key value k <k, rid of data record with search key valuek> <k, list of rids of data records with search key k>

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Alexander Gelbukh Gelbukh

Special Topics in Computer Science Advanced Topics in Information Retrieval Lecture 7 (book chapter 9) : Parallel and Distributed IR. Alexander Gelbukh www.Gelbukh.com. Previous Chapter: Conclusions. How to accelerate search? Same results as sequential Ideas:

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CSE 303 Concepts and Tools for Software Development

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November 10

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Part V Memory System Design

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Hard Drive / Hard Disk

Hard Drive / Hard Disk. Functions of hard disk - Hard disk is used to store the large size of application programs or files. - It provide larger storage capacities and much faster access times than floppy disks. Characteristics of Hard disk

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Persistent Storage

Persistent Storage. StratusLab Tutorial ( Orsay , France) 28 November 2012. Persistent Disk (Volume). Use: Persistent storage of data with lifecycle independent of a single virtual machine instance. Workflow Create a disk with a given size via command line or web interface

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Performance Benchmarks in EMME/2

Performance Benchmarks in EMME/2. Matt Carlson INRO Seminar, Arup, London 2004-09-28. Introduction. A look at some issues regarding performance benchmarks in EMME/2 Show a sample of benchmarks achieved by a range of hardware on the same EMME/2 model Hopefully stimulate some debate!.

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RAMCloud Overview

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CSE332: Data Abstractions Lecture 8: Memory Hierarchy

CSE332: Data Abstractions Lecture 8: Memory Hierarchy. Tyler Robison Summer 2010. Now what?. We have a data structure for the dictionary ADT that has worst-case O ( log n ) behavior One of several interesting/fantastic balanced-tree approaches

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ICS 421 Spring 2010 Query Evaluation (iii)

ICS 421 Spring 2010 Query Evaluation (iii). Asst. Prof. Lipyeow Lim Information & Computer Science Department University of Hawaii at Manoa. Outline. Example. SELECT S.sname FROM Reserves R, Sailors S WHERE R.sid=S.sid AND R.bid=100 AND S.rating >5. ? S.sname. R.sid=S.sid.

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Files in a Nutshell

Files in a Nutshell. Primary Vs. Second Storage. My Computer 8 GB RAM 1 TB Disk space Ram access time: nanosecond range Disk access time: millisecond range Ram is volatile Disk is not volatile. File Systems. The file system is a subsystem of the OS

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Technology Changes

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