OpenDCDiag is an open-source project designed to identify defects and bugs in CPUs. It consists of a set of tests built around a sophisticated CPU testing framework. OpenDCDiag is primarily intended for, but not limited to, Data Center CPUs.

OpenDCDiag is released under the Apache 2.0 license. The OpenDCDiag framework includes some source code from other projects, released under different licenses. See LICENSE.3rdparty for more details.

OpenDCDiag has been built and tested on Ubuntu 21.04 and 21.10. Before building, the following prerequisites must be installed.

sudo apt-get install gcc g++ cmake libeigen3-dev libboost-all-dev libzstd-dev zlib1g-dev libgtest-dev meson

OpenDCDiag has been built and tested on Fedora 33 and 34. Before building, the following prerequisites must be installed.

sudo dnf install -y boost-devel eigen3-devel gcc gcc-c++ git gtest-devel meson zlib-devel libzstd-devel

OpenDCDiag is built with the Meson Build System. For example, a release build can be easily created as follows.

meson builddir --buildtype=release
ninja -C builddir

The OpenDCDiag project welcomes contributions and pull requests. Please see Contributing to OpenDCDiag for more details.

The OpenDCDiag project has adopted the Contributor's Covenant as its Code of Conduct. The project requires contributors and users to follow our Code of Conduct, both in letter and in spirit.

The OpenDCDiag framework is designed to make the creation of new CPU tests as simple as possible. It takes care of much of the boiler plate code CPU tests need, e.g., test life cycle, threading model, CPU feature identification, random number generation, etc. This allows test authors to concentrate on the specific test functionality that interests them. A detailed guide to writing new OpenDCDiag tests is presented in A Guide to Writing OpenDCDiag tests.

Intel provides a tool called the Intel® Data Center Diagnostic Tool for verifying the functionality of all cores within an Intel® Xeon® processor. Intel Data Center Diagnostic Tool is built using the OpenDCDiag framework and is freely downloadable. It is not however open-source and it is designed for use with Intel Xeon processors only. The Intel Data Center Diagnostic Tool contains additional tests that are not part of the OpenDCDiag project.