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Argonne Leadership
Computing Facility


SYCL (pronounced ‘sickle’) is a royalty-free, cross-platform abstraction layer that enables code for heterogeneous processors to be written using standard ISO C++ with the host and kernel code for an application contained in the same source file.

  • Specification:
  • Source code of the compiler:
  • ALCF Tutorial:
module use /soft/compilers
module load llvm-sycl/2022-06 

Example (memory intilization)

$ cat main.cpp
int main(){
  const int N= 100;
  sycl::queue Q;
  int *A = sycl::malloc_shared<int>(N, Q);

  std::cout << "Running on "
            << Q.get_device().get_info<sycl::info::device::name>()
            << "\n";

  // Create a command_group to issue command to the group
  Q.parallel_for(N, [=](sycl::item<1> id) { A[id] = id; }).wait();

  for (size_t i = 0; i < global_range; i++)
    std::cout << "A[ " << i << " ] = " << A[i] << std::endl;
  return 0;
module use /soft/compilers
module load llvm-sycl/2022-06 
$ clang++ -std=c++17 -fsycl -fsycl-targets=nvptx64-nvidia-cuda -Xsycl-target-backend '--cuda-gpu-arch=sm_80' main.cpp
$ ./a.out