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cudaparallel-processingopenmpthrust

Thrust OpenMP without CUDA?

Can I use Thrust with the OpenMP device system if my machine doesn't have a CUDA GPU? If so, do I still require the CUDA toolkit?

Solution

  • I just found this in the CUDA documentation:

    When using either the OpenMP or TBB systems, nvcc isn't required. In general, nvcc is only required when targeting Thrust at CUDA. For example, we could compile the previous code directly with g++ with this command line:

    $ g++ -O2 -o monte_carlo monte_carlo.cpp -fopenmp -DTHRUST_DEVICE_SYSTEM=THRUST_DEVICE_SYSTEM_OMP -lgomp -I<path-to-thrust-headers>

    https://github.com/thrust/thrust/wiki/Device-Backends