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Code Optimization and Performance PowerPoint PPT Presentation

Code Optimization and Performance - Big-O savings are (often) more important than constant factors. But constant factors also matter ... What's the Big-O of this code? void combine1(vec_ptr v, int ...

Big-O savings are (often) more important than constant factors. But constant factors also matter ... What's the Big-O of this code? void combine1(vec_ptr v, int ...

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Code Optimization PowerPoint PPT Presentation

Code Optimization - There's more to performance than asymptotic complexity. Constant ... void combine1(vec_ptr v, int *dest) int i; *dest = 0; for (i = 0; i vec_length(v); i ) ...

There's more to performance than asymptotic complexity. Constant ... void combine1(vec_ptr v, int *dest) int i; *dest = 0; for (i = 0; i vec_length(v); i ) ...

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Code Optimization Sept. 25, 2003 PowerPoint PPT Presentation

Code Optimization Sept. 25, 2003 - The course that gives CMU its Zip! Code Optimization Sept. 25, 2003 Topics Machine-Independent Optimizations Machine Dependent Optimizations Code Profiling

The course that gives CMU its Zip! Code Optimization Sept. 25, 2003 Topics Machine-Independent Optimizations Machine Dependent Optimizations Code Profiling

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Code Optimization I: Machine Independent Optimizations PowerPoint PPT Presentation

Code Optimization I: Machine Independent Optimizations - Machine-Independent Optimizations ... Machine-Independent Opts. ( Cont.) Share Common Subexpressions. Reuse portions of expressions ...

Machine-Independent Optimizations ... Machine-Independent Opts. ( Cont.) Share Common Subexpressions. Reuse portions of expressions ...

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Code Optimization September 30, 2004 PowerPoint PPT Presentation

Code Optimization September 30, 2004 - Provide efficient mapping of program to machine. register allocation ... Two different memory references specify single location. Example. v: [3, 2, 17] ...

Provide efficient mapping of program to machine. register allocation ... Two different memory references specify single location. Example. v: [3, 2, 17] ...

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Code Optimization April 6, 2000 PowerPoint PPT Presentation

Code Optimization April 6, 2000 - Most analysis is based only on static information. compiler has difficulty anticipating run-time inputs ... operation with simpler one. Shift, add instead of ...

Most analysis is based only on static information. compiler has difficulty anticipating run-time inputs ... operation with simpler one. Shift, add instead of ...

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Code Optimization and Performance - Enabling instruction-level parallelism. Understanding processor ... Move vec_length Call Out of Loop. Optimization. Move call to vec_length out of inner loop ...

Enabling instruction-level parallelism. Understanding processor ... Move vec_length Call Out of Loop. Optimization. Move call to vec_length out of inner loop ...

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Towards a Bell-Curve Calculus and its Application to e-Science PowerPoint PPT Presentation

Towards a Bell-Curve Calculus and its Application to e-Science - Towards a Bell-Curve Calculus and its Application to ... Pass documents, information or data from one web service to ... is decidedly non-Normal. ...

Towards a Bell-Curve Calculus and its Application to ... Pass documents, information or data from one web service to ... is decidedly non-Normal. ...

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Code Optimization - Fetch, decode and execute only according to the branch prediction ... Begins fetching and decoding instructions at correct target. jl .L24. jl-taken cc.1 ...

Fetch, decode and execute only according to the branch prediction ... Begins fetching and decoding instructions at correct target. jl .L24. jl-taken cc.1 ...

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Code Optimization I: Machine Independent Optimizations Sept' 26, 2002 PowerPoint PPT Presentation

Code Optimization I: Machine Independent Optimizations Sept' 26, 2002 - There's more to performance than asymptotic complexity. Constant factors matter too! Easily see 10:1 performance range depending on how code is written ...

There's more to performance than asymptotic complexity. Constant factors matter too! Easily see 10:1 performance range depending on how code is written ...

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Combine1 PowerPoint PPT Presentations