from cuda import cuda, nvrtc


def ASSERT_DRV(err):
    if isinstance(err, cuda.CUresult):
        if err != cuda.CUresult.CUDA_SUCCESS:
            raise RuntimeError('Cuda Error: {}'.format(err))
    elif isinstance(err, nvrtc.nvrtcResult):
        if err != nvrtc.nvrtcResult.NVRTC_SUCCESS:
            raise RuntimeError('Nvrtc Error: {}'.format(err))
    else:
        raise RuntimeError('Unknown error type: {}'.format(err))


# ref: https://github.com/NVIDIA/cuda-python/blob/main/examples/extra/jit_program_test.py
def getSMVersion():
    # Init
    err, = cuda.cuInit(0)
    ASSERT_DRV(err)

    # Device
    err, cuDevice = cuda.cuDeviceGet(0)
    ASSERT_DRV(err)

    # Get target architecture
    err, sm_major = cuda.cuDeviceGetAttribute(
        cuda.CUdevice_attribute.CU_DEVICE_ATTRIBUTE_COMPUTE_CAPABILITY_MAJOR,
        cuDevice)
    ASSERT_DRV(err)
    err, sm_minor = cuda.cuDeviceGetAttribute(
        cuda.CUdevice_attribute.CU_DEVICE_ATTRIBUTE_COMPUTE_CAPABILITY_MINOR,
        cuDevice)
    ASSERT_DRV(err)

    return sm_major * 10 + sm_minor