Intel® Graphics Performance Analyzers User Guide

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ID 767266
Date 12/15/2022
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Document Table of Contents
Document Table of Contents x
Intel® Graphics Performance Analyzers User Guide
Intel® Graphics Performance Analyzers User Guide x
Introduction to Intel® Graphics Performance Analyzers Game Optimization Methodology Install and Launch Intel® GPA Enable System-wide Time-based GPU Metrics and Enable Query-based Metrics for OpenGL* in Graphics Frame Analyzer for Ubuntu* Launch Application for Analysis Configure Analysis Settings Quick Start with Profiling Unreal Engine* Games Analyze Desktop Graphics Applications Instrumentation and Tracing Technology API Support Intel® GPA Reference Notices and Disclaimers
Introduction to Intel® Graphics Performance Analyzers x
What's New with Intel® Graphics Performance Analyzers Get Help
Launch Application for Analysis x
Start a Desktop Application with Graphics Monitor Start a Windows* Mixed Reality Application Connect to a Running Application (Windows* only) Analyze Applications in the Network Mode
Configure Analysis Settings x
Configure a Metric Set Customize Keyboard Shortcuts Set Up a Trigger Set Up Tracing Options Set Up Stream Options Set Frame Delimiters
Analyze Desktop Graphics Applications x
Manage Analysis with Graphics Monitor Monitor Real-Time Performance with System Analyzer Identify Issues in Graphics Application Execution with Trace Analyzer Analyze GPU-bound Applications with Graphics Frame Analyzer Optimize Specific Domains
Monitor Real-Time Performance with System Analyzer x
Pause and Resume a Running Application Export Metrics Data with System Analyzer
Analyze GPU-bound Applications with Graphics Frame Analyzer x
Run Render State Experiments with Frame Analyzer Use Advanced Profiling Mode Graphics Frame Analyzer Plugins
Graphics Frame Analyzer Plugins x
Create a Custom Plugin for Graphics Frame Analyzer
Optimize Specific Domains x
Optimize Shaders Analyze Textures Minimize Overdraw Optimize Graphic API States Identify Graphics Elements with Complex Geometry Visualize Color Distribution
Instrumentation and Tracing Technology API Support x
Compile and Link with ITT API Instrument Your Application Minimize ITT API Overhead Clock Domain API Counter API Domain API Marker API Metadata API Relation API String Handle API Thread Naming API Task API
Intel® GPA Reference x
Performance Metrics Reference User Interface Reference
Performance Metrics Reference x
CPU Metrics Device I/O Metrics GPU Metrics Graphics API Metrics Memory Metrics
User Interface Reference x
Graphics Monitor UI Reference Heads-Up Display (HUD) UI Reference System Analyzer UI Reference Graphics Frame Analyzer UI Reference Graphics Trace Analyzer UI Reference
Graphics Monitor UI Reference x
Graphics Monitor Context Menu Graphics Monitor Configuration Window Graphics Monitor Control Panel Graphics Monitor Window: Desktop Applications Tab Graphics Monitor Window: Universal Windows Applications Tab (Windows* only) Graphics Monitor Window: Options Dialog Box
Graphics Frame Analyzer UI Reference x
Graphics Frame Analyzer Window: Open Frame Capture Graphics Frame Analyzer Window: Multiframe View Graphics Frame Analyzer Window: Profiling View Graphics Frame Analyzer Window: Dependency Viewer
Graphics Frame Analyzer Window: Profiling View x
Main Toolbar Visualization Pane API Log Pane Resources Pane Metrics Pane Experiments Pane
Graphics Trace Analyzer UI Reference x
Graphics Trace Analyzer Window: Open Trace Capture Graphics Trace Analyzer Window: Platform View
Intel® Graphics Performance Analyzers User Guide

Clock Domain API

Some applications require the capability to trace events with user-defined timestamps and frequencies different from the timestamps and frequencies generated by a CPU, for example, to instrument events that occur on a GPU. For the purpose you can create a clock domain.

To create a clock domain, use the following primitive:

__itt_clock_domain * ITTAPI __itt_clock_domain_create(__itt_get_clock_info_fn fn, void* fn_data)

Parameters of the primitive:

[in]

fn

Pointer to a callback function that retrieves alternative CPU timestamps and frequencies and stores the timestamps and frequencies data in the clock domain structure field __itt_clock_info.

[in]

fn_data

Argument of a callback function; can be NULL.

Tasks issued from different clock domains are shown on the same timeline by synchronizing a referenced clock domain base timestamp captured at the moment of clock domain creation and a CPU timestamp captured at the same time.

To recalculate clock domain base timestamps and frequencies, if necessary, for example, when a GPU frequency changes, use the following primitive:

__itt_clock_domain_reset()

Parent topic: Instrumentation and Tracing Technology API Support
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