Looking at Thrust: Thrust Prof Output

Thrust Prof

==24803== NVPROF is profiling process 24803, command: ./main-thrust
==24803== Profiling application: ./main-thrust
==24803== Profiling result:
            Type  Time(%)      Time     Calls       Avg       Min       Max  Name
 GPU activities:   74.98%  157.91ms         2  78.954ms  77.478ms  80.430ms  void thrust::cuda_cub::core::_kernel_agent<thrust::cuda_cub::__parallel_for::ParallelForAgent<thrust::cuda_cub::__transform::unary_transform_f<thrust::counting_iterator<unsigned int, thrust::use_default, thrust::use_default, thrust::use_default>, thrust::detail::normal_iterator<thrust::device_ptr<float>>, thrust::cuda_cub::__transform::no_stencil_tag, initRandomPrg, thrust::cuda_cub::__transform::always_true_predicate>, long>, thrust::cuda_cub::__transform::unary_transform_f<thrust::counting_iterator<unsigned int, thrust::use_default, thrust::use_default, thrust::use_default>, thrust::detail::normal_iterator<thrust::device_ptr<float>>, thrust::cuda_cub::__transform::no_stencil_tag, initRandomPrg, thrust::cuda_cub::__transform::always_true_predicate>, long>(thrust::use_default, thrust::use_default)
                   22.78%  47.984ms        10  4.7984ms  4.7934ms  4.8072ms  void thrust::cuda_cub::core::_kernel_agent<thrust::cuda_cub::__parallel_for::ParallelForAgent<thrust::cuda_cub::__transform::binary_transform_f<thrust::detail::normal_iterator<thrust::device_ptr<float>>, thrust::detail::normal_iterator<thrust::device_ptr<float>>, thrust::detail::normal_iterator<thrust::device_ptr<float>>, thrust::cuda_cub::__transform::no_stencil_tag, addPrg, thrust::cuda_cub::__transform::always_true_predicate>, long>, thrust::cuda_cub::__transform::binary_transform_f<thrust::detail::normal_iterator<thrust::device_ptr<float>>, thrust::detail::normal_iterator<thrust::device_ptr<float>>, thrust::detail::normal_iterator<thrust::device_ptr<float>>, thrust::cuda_cub::__transform::no_stencil_tag, addPrg, thrust::cuda_cub::__transform::always_true_predicate>, long>(thrust::device_ptr<float>, thrust::detail::normal_iterator<thrust::device_ptr<float>>)
                    2.24%  4.7185ms         3  1.5728ms  1.5658ms  1.5834ms  void thrust::cuda_cub::core::_kernel_agent<thrust::cuda_cub::__parallel_for::ParallelForAgent<thrust::cuda_cub::__uninitialized_fill::functor<thrust::device_ptr<float>, float>, unsigned long>, thrust::cuda_cub::__uninitialized_fill::functor<thrust::device_ptr<float>, float>, unsigned long>(thrust::device_ptr<float>, float)
      API calls:   58.03%  216.79ms         3  72.265ms  2.3659ms  210.11ms  cudaFree
                   41.66%  155.63ms         3  51.877ms  310.45us  155.00ms  cudaMalloc
                    0.14%  525.39us        94  5.5890us     600ns  211.77us  cuDeviceGetAttribute
                    0.08%  287.94us         1  287.94us  287.94us  287.94us  cuDeviceTotalMem
                    0.04%  131.16us        15  8.7440us  6.1100us  25.190us  cudaLaunch
                    0.02%  75.650us         1  75.650us  75.650us  75.650us  cuDeviceGetName
                    0.02%  72.710us        15  4.8470us  4.4100us  7.9100us  cudaFuncGetAttributes
                    0.00%  10.040us        15     669ns     560ns  1.4200us  cudaGetDevice
                    0.00%  9.3600us        15     624ns     530ns  1.2200us  cudaDeviceGetAttribute
                    0.00%  5.8600us        30     195ns     140ns     480ns  cudaSetupArgument
                    0.00%  4.9900us        30     166ns     130ns     330ns  cudaPeekAtLastError
                    0.00%  4.1000us         3  1.3660us     650ns  2.5200us  cuDeviceGetCount
                    0.00%  3.6800us        15     245ns     180ns     780ns  cudaConfigureCall
                    0.00%  2.1800us         2  1.0900us     640ns  1.5400us  cuDeviceGet