BLT is a streamlined CMake-based foundation for Building, Linking and Testing large-scale high performance computing (HPC) applications.
BLT makes it easy to get up and running on a wide range of HPC compilers, operating systems and technologies:
BLT is easy to pull into an existing or new CMake-based project using a single CMake
For more information, please check our user documentation and tutorial.
Any questions can be sent to [email protected]. If you are an LLNL employee or collaborator, we have an internal Microsoft Teams group chat named "BLT" as well.
We welcome all kinds of contributions: new features, bug fixes, documentation edits.
To contribute, make a pull request, with
as the destination branch. We use CI testing and your branch must pass these tests before
For more information, see the contributing guide.
Thanks to all of BLT's contributors.
BLT is licensed under the BSD 3-Clause license, (BSD-3-Clause or https://opensource.org/licenses/BSD-3-Clause).
Copyrights and patents in the BLT project are retained by contributors. No copyright assignment is required to contribute to BLT.
See LICENSE for details.
Unlimited Open Source - BSD 3-clause Distribution
Individual files contain SPDX tags instead of the full license text. This enables machine processing of license information based on the SPDX License Identifiers that are available here: https://spdx.org/licenses/
Files that are licensed as BSD 3-Clause contain the following text in the license header:
BLT bundles its external dependencies in thirdparty_builtin/. These packages are covered by various permissive licenses. A summary listing follows. See the license included with each package for full details.