Programming/OpenACC

Introduction to openACC

Example openACC C/C++ code

#pragma acc kernels
{
  for (int i=0; i<N; i++)
  {
    x[i] = 1.0;
    y[i] = 2.0;
  }

  for (int i=0; i<N; i++)
  {
    y[i] = a * x[i] + y[i];
  }
}

Example openACC Fortran code

!$acc kernels
  do i=1,N
    x(i) = 1.0
    y(i) = 2.0
  end do
  
  y(:) = a*x(:) + y(:)
!$acc end kernels