Tutorial: Using Auto Vectorization with Intel® Fortran Compiler

Download
ID 758497
Date 4/11/2022
Public
Document Table of Contents
Document Table of Contents x
Tutorial: Using Auto Vectorization Overview
Tutorial: Using Auto Vectorization Overview x
Introduction to Auto Vectorization Tutorial: Linux* and macOS* Tutorial: Windows* Version Additional Exercises Notices and Disclaimers
Tutorial: Linux* and macOS* x
Preparing the Sample Application Establishing a Performance Baseline Generating a Vectorization Report Improving Performance by Aligning Data Improving Performance with Interprocedural Optimization
Tutorial: Windows* Version x
Preparing the Sample Application Establishing a Performance Baseline Generating a Vectorization Report Improving Performance by Aligning Data Improving Performance with Interprocedural Optimization
Tutorial: Using Auto Vectorization Overview

Improving Performance with Interprocedural Optimization

The compiler may be able to perform additional optimizations if it is able to optimize across source line boundaries. These may include, but are not limited to, function inlining. This is enabled with the /Qipo option.

Rebuild the program using the /Qipo option to enable interprocedural optimization.

Select Optimization [Intel C++] > Interprocedural Optimization > Multi-file(/Qipo).

Note that the vectorization messages now appear at the point of inlining in driver.f90 (line 69). You should see 4 optimization notes describing which loops were inlined from matvec.f90.

Now, run the executable and record the execution time.

Parent topic: Tutorial: Windows* Version
Level Two Title

Did you find the information on this page useful?

Characters remaining:

Feedback Message