Build rocRAND from source

Build rocRAND from source#

To build rocRAND as part of the ROCm Core SDK, see TheRock build instructions. TheRock is the recommended way to build ROCm components from source.

Alternatively, you can build rocRAND standalone using the following instructions.

Requirements#

rocRAND has the following prerequisites:

  • CMake (version 3.16 or later)

  • C++ compiler with C++17 support to build the library

    • gcc version 9 or later is recommended

    • Clang uses the development headers and libraries from gcc, so a recent version of it must still be installed when compiling with clang

  • C++ compiler with C++11 support to use the library

  • (Optional) Fortran compiler (This is only required for the Fortran wrapper. GFortran is recommended.)

  • (Optional) GoogleTest (This is only required to build and use the tests. Building the tests is enabled by default.)

    Use GTEST_ROOT to specify the GoogleTest location. For more information, see FindGTest.

    Note

    If GoogleTest is not already installed, it will be automatically downloaded and built.

  • ROCm (see the ROCm installation guide)

  • A HIP-clang compiler, which must be set as the C++ compiler on the ROCm platform.

Build rocRAND from source#

This section provides the information required to build rocRAND from source.

Obtaining the rocRAND source code#

The rocRAND source code is available from the rocrand folder of the rocm-libraries GitHub repository. Use the branch that matches the ROCm version installed on the system. The rocRAND source code can be cloned in two different ways.

Note

For both methods, replace all occurrences of “x.y” in the commands with the version number matching your ROCm installation. For example, if you have ROCm 7.0 installed, clone the release/rocm-rel-7.0 branch.

  • Clone the entire rocm-libraries repository. This is the default method and is the recommended option if you need to install other ROCm libraries alongside rocRAND. However, due to the download size, git clone might take a significant amount of time to complete.

    On a system with ROCm x.y installed, use the following command to obtain the source code for rocRAND version x.y. Replace x.y with the actual version:

    git clone -b release/rocm-rel-x.y https://github.com/ROCm/rocm-libraries.git

  • Clone the individual rocRAND project folder. This option only fetches the rocRAND source code, without any additional ROCm libraries. This significantly reduces the amount of time required to complete the clone operation. However, it requires Git 2.25 or later. To use this method to obtain the source code for rocRAND version x.y, run the following commands. Replace x.y with the actual version:

    git clone -b release/rocm-rel-x.y --no-checkout --depth=1 --filter=tree:0 https://github.com/ROCm/rocm-libraries.git
cd rocm-libraries
git sparse-checkout set --cone projects/rocrand
git checkout release/rocm-rel-x.y

Note

To build ROCm 6.4 and earlier, use the rocRAND repository at ROCm/rocRAND. For more information, see the documentation associated with the release you want to build.

Building the library#

After downloading the source code, use the installation script to build rocRAND:

cd rocm-libraries/projects/rocrand
./install --install

This automatically builds all required dependencies, excluding HIP and Git, and installs the project to /opt/rocm. For further information, run the ./install --help command.

Building with CMake#

For a more detailed installation process, build rocRAND manually using CMake. This enables certain configuration options that are not available through the install script. To build rocRAND, use CMake with the following configuration:

cd rocm-libraries/projects/rocrand; mkdir build; cd build
# Configure the project
CXX=<compiler> cmake [options] ..
# Build
make -j4
# Optionally, run the tests
ctest --output-on-failure
# Install
[sudo] make install

To build for the ROCm platform, <compiler> should be set to hipcc. Additionally, the directory where FindHIP.cmake is installed needs to be passed explicitly using -DCMAKE_MODULE_PATH. By default, this file is installed in /opt/rocm/hip/cmake.

In addition to the built-in CMake options, the following configuration options are available:

  • BUILD_FORTRAN_WRAPPER: Controls whether to build the Fortran wrapper. Defaults to OFF.

  • BUILD_TEST: Controls whether to build the rocRAND tests. Defaults to OFF.

  • BUILD_BENCHMARK: Controls whether to build the rocRAND benchmarks. Defaults to OFF.

  • BUILD_ADDRESS_SANITIZER Controls whether to build with address sanitization enabled. Defaults to OFF.

  • USE_SYSTEM_LIB. Defaults to OFF. Set to ON to use the installed ROCm libraries when building the tests. For this option to take effect, BUILD_TEST must be ON and the version of the installed rocrand library must be compatible with the version of the tests.

To install rocRAND with a non-standard installation location of ROCm, pass -DCMAKE_PREFIX_PATH=</path/to/opt/rocm/> or set the environment variable ROCM_PATH to path/to/opt/rocm.

rocRAND with HIP on Windows#

rocRAND with HIP on Microsoft Windows has the following additional prerequisites:

  • Python 3.6 or higher (Only required for the install script)

  • Visual Studio 2019 with Clang support

  • Strawberry Perl

To install support for rocRAND and HIP on Windows, use the rmake.py Python script as follows:

git clone https://github.com/ROCm/rocm-libraries.git
cd rocm-libraries/projects/rocrand

# the -i option will install rocRAND to C:\hipSDK by default
python rmake.py -i

# the -c option will build all clients including unit tests
python rmake.py -c

Any existing GoogleTest library in the system (especially static GoogleTest libraries built with other compilers) might cause a build failure. If you encounter errors with the existing GoogleTest library or other dependencies, pass the DEPENDENCIES_FORCE_DOWNLOAD flag to CMake to help solve the problem.

To disable inline assembly optimizations in rocRAND for both the host library and the device functions provided in rocrand_kernel.h, set the CMake option ENABLE_INLINE_ASM to OFF.

Building the Python API wrapper#

This section provides the information required to build the rocRAND Python API wrapper.

Requirements#

The rocRAND Python API Wrapper requires the following dependencies:

  • rocRAND

  • Python 3.5

  • NumPy (will be installed automatically as a dependency if necessary)

Note

If rocRAND is built from source but is either not installed or installed in a non-standard directory, set the ROCRAND_PATH environment variable to the library location. For example:

export ROCRAND_PATH=~rocm-libraries/projects/rocrand/build/library/

Installation#

The Python rocRAND module can be installed using pip:

cd rocm-libraries/projects/rocrand/python/rocrand
pip install .

The tests can be executed as follows:

cd rocm-libraries/projects/rocrand/python/rocrand
python tests/rocrand_test.py
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