Sequential arrays - PowerPoint PPT Presentation

PHP

PHP. Presented by Christine Fang and Ian Stuart ● CS616 Spring 2003. What is PHP?. PHP - the “ P HP H ypertext P reprocessor” It’s an open-source programming language for building dynamic, interactive web sites. Devised by Rasmus Lerdorf in 1994. PHP is a project of the Apache Foundation.

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Lecture 9: Memory Hierarchy (3)

Lecture 9: Memory Hierarchy (3). Michael B. Greenwald Computer Architecture CIS 501 Fall 1999. Improving Cache Performance. Average memory-access time = Hit time + Miss rate x Miss penalty (ns or clocks) Improve performance by: 1. Reduce the miss rate, 2. Reduce the miss penalty, or

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Merging Arrays Example

Merging Arrays Example. /* Before: 2 sequential arrays */ int val[SIZE]; int key[SIZE]; /* After: 1 array of stuctures */ struct merge { int val; int key; }; struct merge merged_array[SIZE]; Reducing conflicts between val &amp; key; improve spatial locality. Loop Interchange Example.

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460 views • 23 slides

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