Intel® Advisor Help
Purpose and Usage | Prerequisites | Run | Report Regions and Usage | What Do I Do Next?
Run a Survey analysis to generate a Survey Report that identifies:
Where vectorization, or parallelization with threads, will pay off the most
If vectorized loops are providing benefit, and if not, why not
Un-vectorized loops and why they are not vectorized
Performance problems in general
To prepare to run a Survey analysis:
Do one of the following to open the Analysis Target tab in the Project Properties dialog box:
In the Intel Advisor GUI, choose Project > Project Properties…
In the Visual Studio IDE, choose Project > Intel Advisor 201n Project Properties….
Choose the Survey Hotspots Analysis type, then choose the input data set or runtime parameters for your target application. If you want to speed up your target application generally, you can use typical input data. However, if you want to improve performance on specific, slow operations, choose input data to emphasize these slow operations. After you prepare appropriate input data, configure your target application with the chosen data.
If you plan to run Refinement Reports, set parameters at the same time you set parameters for the Survey Hotspots Analysis and Survey Trip Count Analysis types. If possible, use the Inherit settings from Survey Hotspots Analysis Type checkbox for other Analysis Types.
Setting search directories in the Binary/Symbol Search tab and Source Search tabs is optional for the Vectorization Advisor.
Choose the optimal compiler settings. The most up-to-date settings are in Getting Started with Intel® Advisor.
To run a Survey analysis, do one of the following:
In the Vectorization
Workflow tab, click the
button under
Survey Target.
In the Visual Studio Solution Explorer, right-click the project, then choose Intel Advisor 201n > Start Survey Analysis.
While analysis is running, you can do the following in the Workflow tab:
Stop analysis and data collection, and retain the already collected data: Click the
button.
Cancel analysis and data collection, and discard the collected data: Click the
button.
Interrupt post-collection data finalization: Click the
button.
If the Survey analysis does not collect sufficient data to produce a Survey Report, it displays a Target executed too quickly or does not contain debug symbols message. Consider increasing the target workload or data to run the analysis at least a few seconds; or check whether debug information is specified as a build option; or specify a different target application.
There are a variety of techniques available to minimize data collection, result size, and execution time. Check See Also.
See Getting Started with Intel® Advisor for corresponding command line interface commands.
1 |
Filters pane Filter analysis data by a variety of criteria, such as module, loop/function, and vectorized/non-vectorized. |
2 |
Roofline Chart pane - visualize actual performance against hardware-imposed performance ceilings, as well as determine the main limiting factor (memory bandwidth or compute capacity), thereby providing an ideal roadmap of potential optimization steps. |
3 |
Loop Information pane - View integrated compiler report data and Intel Advisor performance data for target application loops, and mark a loop for deeper analysis. |
4 |
Advanced View pane - View more information for a loop selected in the Loop Information pane.
|
Associated Survey Source window, from top left to bottom right:
View Activation pane - Enable or disable views shown in the Source view
Source View pane - View user-visible source code representation of the selected site.
Assembly View pane - View assembly representation of the selected site.
Call Stack View pane - View the call stack for the selected code region. Click to display related code regions in the File: filename pane, or click to display the context menu.