Intel® Graphics Performance Analyzers for Windows* Host

  • Intel® Graphics Performance Analyzers 2020 R1
  • 03/31/2020
  • Public Content
Contents

About Instrumentation and Tracing Technology (ITT) API

The instrumentation and tracing technology (ITT) API provided by Intel® GPA enables your application to generate and control the collection of trace data during its execution. ITT API has the following features:
  • Application performance overhead can be controlled based on the amount of traces that you collect.
  • Enables trace collection without recompiling your application.
  • Supports applications in C/C++ environments.
  • Automatically traces data from Microsoft DirectX* applications.
  • Automatically traces data from OpenGL* ES v1, v2, and v3 APIs on Android* applications.
  • Supports instrumentation for tracing application code.
This document describes how to add basic instrumentation to your application, and also includes examples of several advanced instrumentation topics.
User applications/modules linked to the static ITT API library do not have a runtime dependency on a dynamic library. Therefore, they can be executed without Intel® GPA or other Intel® Parallel Studio XE tools.
ITT API enables you to manually instrument your application for further application performance analysis.
Note
ITT API is a set of pure C functions. There are no Java or .NET APIs. If you need runtime environment support, you can use a JNI, or C/C++ function call from the managed code. If the collector causes significant overhead or data storage, you can pause the analysis to reduce the overhead.

Product and Performance Information

1

Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804