'Vec length' diaporamas de présentation

Code Optimization: Machine Independent Optimizations Feb 12, 2004

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CS 201 Optimizing Program Performance Machine Dependent Optimizations

CS 201 Optimizing Program Performance Machine Dependent Optimizations. Previous Best Combining Code. Task Compute sum of all elements in vector Removed procedure call within loop vec_length() Reduction in strength: replaced get_vec_element() with array operation

716 views • 59 slides

CS 201 Optimizing Program Performance Machine Dependent Optimizations

CS 201 Optimizing Program Performance Machine Dependent Optimizations. Previous Best Combining Code. Task Compute sum of all elements in vector Removed procedure call within loop vec_length() Reduction in strength: replaced get_vec_element() with array operation

696 views • 59 slides

Code Optimization Sept. 25, 2003

Code Optimization Sept. 25, 2003. 15-213 “The course that gives CMU its Zip!”. Topics Machine-Independent Optimizations Machine Dependent Optimizations Code Profiling. class10.ppt. Harsh Reality. There’s more to performance than asymptotic complexity Constant factors matter too!

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Code Optimization Sept. 25, 2003

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Code Optimization October 3, 2000

15-213. Code Optimization October 3, 2000. Topics Machine-Independent Optimizations Code motion Reduction in strength Common subexpression sharing Machine-Dependent Optimizations Pointer code Unrolling Enabling instruction level parallelism Branches and Branch Prediction Advice.

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ECE 454 Computer Systems Programming Compiler and Optimization (II)

ECE 454 Computer Systems Programming Compiler and Optimization (II). Ding Yuan ECE Dept., University of Toronto http://www.eecg.toronto.edu/~yuan. Content. Compiler Basics (last lec .) Understanding Compiler Optimization (last lec .) Manual Optimization Advanced Optimizations

523 views • 41 slides

Code Optimization April 6, 2000

Code Optimization April 6, 2000. 15-213. Topics Machine-Independent Optimizations Code motion Reduction in strength Common subexpression sharing Machine-Dependent Optimizations Pointer code Unrolling Enabling instruction level parallelism Advice. class22.ppt. Great Reality #4.

378 views • 37 slides

Code Optimization

Code Optimization. Outline. Machine-Independent Optimization Code motion Memory optimization Suggested reading 5.2 ~ 5.6. Motivation. Constant factors matter too! easily see 10:1 performance range depending on how code is written must optimize at multiple levels

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Code Optimization I: Machine Independent Optimizations Sept. 26, 2002

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Code Optimization I: Machine Independent Optimizations Sept. 26, 2002

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Performance and Optimization

Performance and Optimization. Measuring Performance. Key measure of performance for a computing system is speed Response time or execution time or latency . Throughput . We have seen how to increase throughput, while slightly increasing execution time of each single instruction

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CS 3214 Computer Systems

CS 3214 Computer Systems. Godmar Back. Lecture 9. Announcements. Stay tuned for Exercise 5 Project 2 due Sep 30 Auto-fail rule 2: Need at least Firecracker to blow up to pass class. Some of the following slides are taken with permission from

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CS 201 Code Optimization, Part 1

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Machine Independent Optimizations

357 views • 30 slides

Computer Systems

Computer Systems. Optimizing program performance. Performance can make the difference. Use Pointers instead of array indices Use doubles instead of floats Optimize inner loops. Recommendations Patrick van der Smagt in 1991 for neural net implementations. Performance gain.

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Introduction to Computer Systems

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