User Guide

Contents

Explore Vectorization and Code Insights Results

Intel® Advisor
provides several ways to view the
Vectorization and Code Insights
results.

View Result in CLI

If you run the
Vectorization and Code Insights
perspective from command line, you can print the results to a terminal or a command prompt and save them to a
.txt
,
.csv
, or
.xml
file.
For example, to generate the Survey report:
advisor --report=survey --project-dir=./advi_results
You should see a similar result:
ID Function Call Sites Total Self Type Why No Vectorization ... and Loops Time Time ... _____________________________________________________________________________________________________________________________ ... 14 [loop in main at mmult_serial.cpp:79] 0.495s 0.495s Vectorized Versions 1 vectorization possible but seems inefficient ... 6 -[loop in main at mmult_serial.cpp:79] 0.275s 0.275s Vectorized (Body) ... 3 -[loop in main at mmult_serial.cpp:79] 0.205s 0.205s Vectorized (Body) ... 7 -[loop in main at mmult_serial.cpp:79] 0.015s 0.015s Peeled ... 11 -[loop in main at mmult_serial.cpp:79] 0s 0s Remainder vectorization possible but seems inefficient ... 4 [loop in main at mmult_serial.cpp:79] 0.510s 0.015s Scalar inner loop was already vectorized ... 12 [loop in main at mmult_serial.cpp:79] 0.510s 0s Scalar Versions 1 inner loop was already vectorized ... 5 -[loop in main at mmult_serial.cpp:79] 0.510s 0s Scalar inner loop was already vectorized ...
The result is also saved into a text file
advisor-survey.txt
located at
./advi_results/e
NNN
/hs
NNN
.
You can generate a report for any analysis you run. The
generic
report command looks as follows:
advisor --report=
<analysis-type>
--project-dir=
<project-dir>
--format=
<format>
where:
  • <analysis-type>
    is the analysis you want to generate the results for. For example,
    survey
    for the Survey report,
    top-down
    for the Survey report in a top-down view,
    map
    for the Memory Access Patterns, or
    dependencies
    for the Dependencies report.
  • --format=
    <format>
    is a file format to save the results to.
    <format>
    is
    text
    (default),
    csv
    ,
    xml
    .
You can also generate a report with the data from all analyses run and save it to a CSV file with the
--report=joined
action as follows:
advisor --report=joined --report-output=
<path-to-csv>
where
--report-output=<path-to-csv>
is a path and a name for a
.csv
file to save the report to. For example,
/home/report.csv
. This option is required to generate a joined report.

View Result in GUI

If you run the
Vectorization and Code Insights
perspective from command line
, a project is created automatically in the directory specified with
--project-dir
. All the collected results and analysis configurations are stored in the
.advixeproj
project, that you can view in the
Intel Advisor
.
To open the project in GUI, you can run the following command:
advisor-gui <project-dir>
If the report does not open, click
Show Result
on the Welcome pane.
If you run the
Vectorization and Code Insights
perspective from GUI
, the result is opened automatically after the collection finishes.
You first see a Vectorization Summary report that includes the overall information about vectorized and not vectorized loops/functions in your code and the vectorization efficiency, including:
  • Performance metrics of your program and the speedup for the vectorized loops/functions
  • Top five time-consuming loops and top five optimization recommendations with the highest confidence
Vectorization summary report

Save a Read-only Snapshot

A snapshot is a read-only copy of a project result, which you can view at any time using the
Intel Advisor
GUI. You can save a snapshot for a project using Intel Advisor GUI or CLI.
To save an active project result as a read-only snapshot from GUI: Click the button in the top ribbon of the report. In the
Create a Result Snapshot
dialog box, enter the snapshot details and save it.
To save an active project result as a read-only snapshot from CLI:
advisor --snapshot --project-dir=
<project-dir>
[--cache-sources] [--cache-binaries] --
<snapshot-path>
where:
  • --cache-sources
    is an option to add application source code to the snapshot.
  • --cache-binaries
    is an option to add application binaries to the snapshot.
  • <snapshot-path
    is a path and a name for the snapshot. For example, if you specify
    /tmp/new_snapshot
    , a snapshot is saved in a
    tmp
    directory as
    new_snapshot.advixeexpz
    . You can skip this and save the snapshot to a current directory as
    snapshot
    XXX
    .advixeexpz
    .
To open the result snapshot in the
Intel Advisor
GUI, you can run the following command:
advisor-gui
<snapshot-path>
You can visually compare the saved snapshot against the current active result or other snapshot results.

Result Interpretation

When you run the
Vectorization and Code Insights
perspective, depending on a configuration chosen, the report can show different levels of details:
For a general overview of the report, see Vectorization Report Overview.

Product and Performance Information

1

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