User Guide

Contents

stackwalk-mode

Choose between online and offline modes to analyze stacks during Survey analysis.
GUI Equivalent
Project Properties
Analysis Target
Survey Hotspots Analysis
Advanced
Stack unwinding mode

Syntax

--stackwalk-mode
=
<string>
Arguments
Argument
Description
online
Analyze stacks during collection.
offline
Analyze stacks after collection.
Default
offline
Actions Modified
collect
=survey
Usage
Set to
offline
in the following cases:
  • Survey analysis overhead exceeds 1.1x
  • A large quantity of data is allocated on the stack, which is a common case for Fortran applications or applications with a large number of small, parallel, OpenMP* regions
  • When analyzing a Data Parallel C++ (DPC++), OpenMP target or OpenCL™ applications with the Offload Modeling perspective
Usage can decrease collection overhead.
Example
Run a Survey analysis. Analyze stacks during collection.
advisor --collect=survey --project-dir=./myAdvisorProj --stackwalk-mode=online -- ./bin/myTargetApplication

Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.