Building from Source#

The following instructions are for users wishing to build cuGraph from source code. These instructions are tested on supported distributions of Linux, CUDA, and Python - See RAPIDS Getting Started for list of supported environments. Other operating systems might be compatible, but are not currently tested.

The cuGraph package include both a C/C++ CUDA portion and a python portion. Both libraries need to be installed in order for cuGraph to operate correctly.



  • gcc version 9.3+

  • nvcc version 11.0+

  • cmake version 3.20.1+


  • CUDA 11.0+

  • NVIDIA driver 450.80.02+

  • Pascal architecture or better

You can obtain CUDA from


  • cmake version 3.20.1+

  • libcugraphops (version matching source branch version, eg. 23.10)

You can obtain libcugraphops using conda/mamba from the nvidia channel, or using pip with the --extra-index-url= option. See the RAPIDS docs for more details.

Building cuGraph#

To install cuGraph from source, ensure the dependencies are met.

Clone Repo and Configure Conda Environment#

GIT clone a version of the repository

# Set the localtion to cuGraph in an environment variable CUGRAPH_HOME
export CUGRAPH_HOME=$(pwd)/cugraph

# Download the cuGraph repo - if you have a folked version, use that path here instead
git clone $CUGRAPH_HOME


Create the conda development environment

# create the conda environment (assuming in base `cugraph` directory)

# for CUDA 11.x
conda env create --name cugraph_dev --file conda/environments/all_cuda-118_arch-x86_64.yaml

# activate the environment
conda activate cugraph_dev

# to deactivate an environment
conda deactivate
  • The environment can be updated as development includes/changes the dependencies. To do so, run:

# Where XXX is the CUDA 11 version
conda env update --name cugraph_dev --file conda/environments/cugraph_dev_cuda11.XXX.yml

conda activate cugraph_dev

Build and Install Using the Script#

Using the script make compiling and installing cuGraph a breeze. To build and install, simply do:

$ ./ clean
$ ./ libcugraph
$ ./ cugraph

There are several other options available on the build script for advanced users. options: [<target> ...] [<flag> ...]
 where <target> is:
   clean                      - remove all existing build artifacts and configuration (start over)
   uninstall                  - uninstall libcugraph and cugraph from a prior build/install (see also -n)
   libcugraph                 - build and SG test binaries
   libcugraph_etl             - build and SG test binaries
   pylibcugraph               - build the pylibcugraph Python package
   cugraph                    - build the cugraph Python package
   nx-cugraph                 - build the nx-cugraph Python package
   cugraph-service            - build the cugraph-service_client and cugraph-service_server Python package
   cpp-mgtests                - build libcugraph and libcugraph_etl MG tests. Builds MPI communicator, adding MPI as a dependency.
   cugraph-dgl                - build the cugraph-dgl extensions for DGL
   cugraph-pyg                - build the cugraph-dgl extensions for PyG
   docs                       - build the docs
 and <flag> is:
   -v                         - verbose build mode
   -g                         - build for debug
   -n                         - do not install after a successful build
   --pydevelop                - use develop instead of install
   --allgpuarch               - build for all supported GPU architectures
   --skip_cpp_tests           - do not build the SG test binaries as part of the libcugraph and libcugraph_etl targets
   --without_cugraphops       - do not build algos that require cugraph-ops
   --cmake_default_generator  - use the default cmake generator instead of ninja
   --clean                    - clean an individual target (note: to do a complete rebuild, use the clean target described above)
   -h                         - print this text

 default action (no args) is to build and install 'libcugraph' then 'libcugraph_etl' then 'pylibcugraph' then 'cugraph' then 'cugraph-service' targets

$ ./ clean                        # remove prior build artifacts (start over)
$ ./ libcugraph -v                # compile and install libcugraph with verbose output
$ ./ libcugraph -g                # compile and install libcugraph for debug
$ ./ libcugraph -n                # compile libcugraph but do not install

# make parallelism options can also be defined: Example build jobs using 4 threads (make -j4)
$ PARALLEL_LEVEL=4 ./ libcugraph

Note that the libraries will be installed to the location set in `$PREFIX` if set (i.e. `export PREFIX=/install/path`), otherwise to `$CONDA_PREFIX`.

Building each section independently#

Build and Install the C++/CUDA libcugraph Library#

CMake depends on the nvcc executable being on your path or defined in $CUDACXX.

This project uses cmake for building the C/C++ library. To configure cmake, run:

# Set the localtion to cuGraph in an environment variable CUGRAPH_HOME
export CUGRAPH_HOME=$(pwd)/cugraph

cd cpp                                        # enter cpp directory
mkdir build                                   # create build directory
cd build                                      # enter the build directory

# now build the code
make -j                                       # "-j" starts multiple threads
make install                                  # install the libraries

The default installation locations are $CMAKE_INSTALL_PREFIX/lib and $CMAKE_INSTALL_PREFIX/include/cugraph respectively.

Updating the RAFT branch#

libcugraph uses the RAFT library and there are times when it might be desirable to build against a different RAFT branch, such as when working on new features that might span both RAFT and cuGraph.

For local development, the CPM_raft_SOURCE=<path/to/raft/source> option can be passed to the cmake command to enable libcugraph to use the local RAFT branch.

To have CI test a cugraph pull request against a different RAFT branch, modify the bottom of the cpp/cmake/thirdparty/get_raft.cmake file as follows:

# Change pinned tag and fork here to test a commit in CI
# To use a different RAFT locally, set the CMake variable
# RPM_raft_SOURCE=/path/to/local/raft
find_and_configure_raft(VERSION    ${CUGRAPH_MIN_VERSION_raft}
                        FORK       <your_git_fork>
                        PINNED_TAG <your_git_branch_or_tag>

                        # When PINNED_TAG above doesn't match cugraph,
                        # force local raft clone in build directory
                        # even if it's already installed.
                        CLONE_ON_PIN     ON

When the above change is pushed to a pull request, the continuous integration servers will use the specified RAFT branch to run the cuGraph tests. After the changes in the RAFT branch are merged to the release branch, remember to revert the get_raft.cmake file back to the original cuGraph branch.

Building and installing the Python package#

  1. Install the Python packages to your Python path:

cd python
cd pylibcugraph
python build_ext --inplace
python install    # install pylibcugraph
cd ../cugraph
python build_ext --inplace
python install    # install cugraph python bindings

Run tests#

If you already have the datasets:

export RAPIDS_DATASET_ROOT_DIR=<path_to_ccp_test_and_reference_data>

If you do not have the datasets:

cd $CUGRAPH_HOME/datasets
source #This takes about 10 minutes and downloads 1GB data (>5 GB uncompressed)

Run either the C++ or the Python tests with datasets

  • Python tests with datasets

    pip install python-louvain #some tests require this package to run
    cd python
  • C++ stand alone tests

    From the build directory :

    # Run the cugraph tests
    cd cpp/build
    gtests/GDFGRAPH_TEST		# this is an executable file
  • C++ tests with larger datasets

    Run the C++ tests on large input:

    cd $CUGRAPH_HOME/cpp/build
    #test one particular analytics (eg. pagerank)
    #test everything
    make test

Note: This conda installation only applies to Linux and Python versions 3.8/3.10.

(OPTIONAL) Set environment variable on activation#

It is possible to configure the conda environment to set environmental variables on activation. Providing instructions to set PATH to include the CUDA toolkit bin directory and LD_LIBRARY_PATH to include the CUDA lib64 directory will be helpful.

cd  ~/anaconda3/envs/cugraph_dev

mkdir -p ./etc/conda/activate.d
mkdir -p ./etc/conda/deactivate.d
touch ./etc/conda/activate.d/
touch ./etc/conda/deactivate.d/

Next the file needs to be edited

vi ./etc/conda/activate.d/

export PATH=/usr/local/cuda-11.0/bin:$PATH # or cuda-11.1 if using CUDA 11.1 and cuda-11.2 if using CUDA 11.2, respectively
export LD_LIBRARY_PATH=/usr/local/cuda-11.0/lib64:$LD_LIBRARY_PATH # or cuda-11.1 if using CUDA 11.1 and cuda-11.2 if using CUDA 11.2, respectively
vi ./etc/conda/deactivate.d/

unset PATH

Creating documentation#

Python API documentation can be generated from ./docs/cugraph directory. Or through using “./ docs”


Portions adopted from