A SYCL Implementation for CPU and NEC SX-Aurora TSUBASA (SX-AT)

• CMake 3.10 or higher
• A C++ compiler supporting C++17
• Clang and LLVM 12 or higher (including development headers and shared libraries, required if using the CPU or VE device)
• Python 3 (required if using the CPU or VE device)
• NEC Software Development Kit for Vector Engine (required if using the VE device)

We regularly test on Rocky Linux 8 and Ubuntu 20.04 on our GitHub Actions pipeline. Use the following commands to install all required dependencies (except the VE SDK) on these distributions:

• Rocky Linux 8: dnf install -y git gcc gcc-c++ cmake make clang-devel llvm-devel python3
• Ubuntu 20.04: apt install -y git gcc g++ cmake make pkg-config clang-12 libclang-12-dev llvm-12-dev python3

mkdir build && cd build
cmake ..
make
sudo make install

neoSYCL supports three types of devices:

• Host: Kernels are executed on the host. This device is always available.
• CPU: Kernels are compiled to a shared library and executed on the host CPU. To use this device, add the -DBUILD_KERNEL_OUTLINER=ON option when invoking CMake.
• VE: Kernels are compiled to a shared library and executed on the Vector Engine using Vector Engine Offloading. To use this device, add the -DBUILD_KERNEL_OUTLINER=ON and -DBUILD_VE=ON options when invoking CMake.

If Clang, LLVM or VEOS are installed to non-standard locations, their paths should be given via the options -DCLang_DIR=, -DLLVM_DIR= and -DVEO_DIR= options, respectively.

When using the CPU or VE device, the SYCL source file needs to be compiled using the nsc++ compiler wrapper. The target device can be specified using the --device option. Accepted values are cpu or ve.

If you use neoSYCL in your work, please cite the following paper:

Yinan Ke, Mulya Agung, Hiroyuki Takizawa, "neoSYCL: a SYCL implementation for SX-Aurora TSUBASA," The International Conference on High Performance Computing in Asia-Pacific Region (HPC Asia 2021), pp. 50-57, Jan. 2021.