Installation

Prerequisites

Ubuntu* 18
GNU*: C, C++ 4.8.5 or higher.

Refer to System Requirements for more details.

SYCL support

Intel(R) oneAPI DPC++/C++ Compiler with L0 v1.0 support

General installation scenario

cd oneccl
mkdir build
cd build
cmake ..
make -j install

If you need a "clear" build, create a new build directory and invoke cmake within it.

You can also do the following during installation:

Specify installation directory
Specify the compiler
Specify SYCL cross-platform abstraction level
Specify the build type
Enable make verbose output

Specify installation directory

Modify cmake command as follows:

cmake .. -DCMAKE_INSTALL_PREFIX=/path/to/installation/directory

If no -DCMAKE_INSTALL_PREFIX is specified, oneCCL will be installed into _install subdirectory of the current build directory, for example, ccl/build/_install.

Specify the compiler

Modify cmake command as follows:

cmake .. -DCMAKE_C_COMPILER=your_c_compiler -DCMAKE_CXX_COMPILER=your_cxx_compiler

Specify `SYCL` cross-platform abstraction level

If your CXX compiler requires SYCL, it is possible to specify it (DPC++ is supported for now). Modify cmake command as follows:

cmake .. -DCMAKE_C_COMPILER=your_c_compiler -DCMAKE_CXX_COMPILER=icpx -DCOMPUTE_BACKEND=dpcpp

Specify the build type

Modify cmake command as follows:

cmake .. -DCMAKE_BUILD_TYPE=[Debug|Release|RelWithDebInfo|MinSizeRel]

Enable `make` verbose output

To see all parameters used by make during compilation and linkage, modify make command as follows:

make -j VERBOSE=1

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