Intel VTune Tutorial/Useful Tips - Revision history

Kamil-braschke-0d3e@uni-wuppertal.de at 10:12, 15 July 2022

2022-07-15T10:12:13Z

Martin-errenst-7986@uni-wuppertal.de at 10:18, 14 June 2022

2022-06-14T10:18:56Z

Martin-errenst-7986@uni-wuppertal.de at 07:46, 14 June 2022

2022-06-14T07:46:17Z

Martin-errenst-7986@uni-wuppertal.de at 07:45, 14 June 2022

2022-06-14T07:45:26Z

Martin-errenst-7986@uni-wuppertal.de at 07:42, 14 June 2022

2022-06-14T07:42:09Z

Martin-errenst-7986@uni-wuppertal.de: Created page with "Intel VTune Tutorials: Useful Tips {{DISPLAYTITLE:Intel VTune Tutorial: Useful Tips}} {{Syllabus Intel VTune Tutorial}} TOC Thi..."

2022-06-14T07:35:06Z

Created page with "Intel VTune Tutorials: Useful Tips<nowiki /> {{DISPLAYTITLE:Intel VTune Tutorial: Useful Tips}}<nowiki /> {{Syllabus Intel VTune Tutorial}} __TOC__ Thi..."

New page

[[Category:Tutorials|Intel VTune Tutorials: Useful Tips]]<nowiki />
{{DISPLAYTITLE:Intel VTune Tutorial: Useful Tips}}<nowiki />
{{Syllabus Intel VTune Tutorial}}
__TOC__

This fourth tutorial of the Intel VTune series contains a loose collection of tips and tricks that did not fit anywhere else.
It covers the commandline interface, steering data taking with the ITT API, and third party tooling.

=== Video === 

<youtube width="600" height="340" right>ghFn5IBzjrc</youtube>

([[Media:VTune_UsefulTips.pdf |Slides as pdf]])

=== Quiz === 
{{hidden begin
|title = 1. How can you get help on VTunes commandline interface?}}
<quiz display=simple>
{
|type="()"}
+ <source enclose="none">vtune -help</source>
|| Correct. You can also use `vtune -help <action>` to learn more abouth other commands and `vtune -help collect <anlaysis>` to get more info on analysis types.
- <source enclose="none">vtune --help</source>
|| Not correct. The command expects a single dash!
- <source enclose="none">vtune -h</source>
|| Not correct. Although commonly used, VTune does expect a `-help` (single dash)
</quiz>
{{hidden end}}
{{hidden begin
|title = 2. How can you get the CLI command of a configured analysis in the GUI?}}
<quiz display=simple>
{
|type="()"}
- This is not possible
|| Not correct.
- It is automatically printed in a log file
|| Not correct.
+ By pressing the 4th button at the bottom right on the "Configure Analysis" screen.
|| Correct. This is a very useful feature to explore commandline options from existing analysis configurations in the GUI.
</quiz>
{{hidden end}}
{{hidden begin
|title = 3. What are typical causes of non-deterministic effects on profile results?}}
<quiz display=simple>
{
|type="()"}
- Quantum mechanical effects in the CPU
|| Not correct. Even though there could be random bit flips, this is not something that commonly affects performance analyses.
- Unstable system clocks
|| Not correct. Ideally the passing of time is constant.
+ Network communication, statistical nature of event based sampling, other processes competing for resources
|| Correct. It makes sense to try and get rid of most of these influence. Use a "quiet" machine and try to use a local filesystem instead of a network FS.
</quiz>
{{hidden end}}
{{hidden begin
|title = 4. What is the ITT API?}}
<quiz display=simple>
{
|type="()"}
- A library to integrate a standalone profiler with a program during compilation
|| Not correct. You still need VTune to profile your application.
- An interactive VTune tutorial that automatically uses your program as an example
|| Not correct.
+ A library for instrumentation and tracing. Allows for steering profile collection from the source code
|| Correct. This can be very useful to only measure interesting sections of your program!
</quiz>
{{hidden end}}

← Older revision		Revision as of 07:45, 14 June 2022
Line 12:		Line 12:

	([[Media:VTune_UsefulTips.pdf \|Slides as pdf]])		([[Media:VTune_UsefulTips.pdf \|Slides as pdf]])
		+
		+	=== Links ===
		+	* [https://www.intel.com/content/www/us/en/develop/documentation/gpa-user-guide/top/instrumentation-and-tracing-technology-apis.html Instrumentation and Tracing Technology API Support]
		+	* [https://github.com/intel/ittapi github.com/intel/ittapi]

	=== Quiz === <!--T:5-->		=== Quiz === <!--T:5-->

@@ Line 24: / Line 24: @@
 |type="()"}
 + <source enclose="none">vtune -help</source>
-|| Correct. You can also use <source enclose="none">vtune -help <action></source> to learn more abouth other commands and <source enclose="none">vtune -help collect <anlaysis></source> to get more info on analysis types.
+|| Correct. You can also use <source enclose="none">vtune -help <action></source> to learn more abouth other commands and <source enclose="none">vtune -help collect <analysis></source> to get more info on analysis types.
 - <source enclose="none">vtune --help</source>
 || Not correct. The command expects a single dash!

@@ Line 9: / Line 9: @@
 === Video === <!--T:5-->
-<youtube width="600" height="340" right>ghFn5IBzjrc</youtube>
+<youtube width="600" height="340" right>5hQcd3MQpBw</youtube>
 ([[Media:VTune_UsefulTips.pdf |Slides as pdf]])

@@ Line 36: / Line 36: @@
 - It is automatically printed in a log file
 || Not correct.
-+ By pressing the 4th button at the bottom right on the "Configure Analysis" screen.
++ By pressing the 4th button at the bottom right on the "Configure Analysis" screen
 || Correct. This is a very useful feature to explore commandline options from existing analysis configurations in the GUI.
 </quiz>