libGPUCounters (formerly called HWCPipe) is a utility that allows applications to sample performance counters from Arm® Immortalis™ and Arm Mali™ GPUs. This information allows developers to profile and optimize their application workload using their existing in-house performance tooling, and gives the ability to display performance data live in the application user interface.

The 2.x release series is a major rewrite of the library, capable of exposing all of the public performance counters accessible in the Arm Streamline profiler. This version of the library is not API compatible with the 1.x series, and no longer supports Arm CPU performance counters.

This library aims to support all Arm GPU products from the Mali-T700 series onwards, ensuring developers have coverage of the vast majority of smartphones with Arm GPUs that are in use today. If you find a device with an Arm GPU which does not work, or gives inaccurate results, please open an Issue on the GitHub issue tracker.

This library only supports devices using the Arm commercial driver.

This project is licensed under the MIT license. By downloading any component from this repository you acknowledge that you accept terms specified in the LICENSE.md file.

The library is designed to be embedded into existing CMake build process. Clone the GitHub repository and add it as a subdirectory to your CMakeLists.txt. A single library target, called hwcpipe, is made available for you to link to your project.

For example, your CMakeLists.txt could contain:

add_subdirectory(external/hwcpipe)
target_link_libraries(my_project hwcpipe)

A small example demonstrating the API usage is provided in the examples folder. To build the example enable the HWCPIPE_BUILD_EXAMPLES CMake build option.

cmake -DHWCPIPE_BUILD_EXAMPLES=ON -B build .

If you have issues with the library itself, please raise them in the project's GitHub issue tracker.

If you have any questions about Arm GPUs, application development for Arm GPUs, or general mobile graphics development or technology please submit them on the Arm Community graphics forums.

Copyright © 2023-2024, Arm Limited and contributors. All rights reserved.