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我正在尝试运行http://docs.thrust.googlecode.com/hg/group__modifying.html中描述的推力 for_each 示例,但是在编译和运行时出现错误。

我使用以下文件:fe.cu:

#include <thrust/for_each.h>
#include <thrust/device_vector.h>
#include <stdio.h>

struct printf_functor{
    __host__ __device__
    void operator()(int x){
        printf("%d\n");
    }
};

int main(){
    thrust::device_vector<int> d_vec(3);
    d_vec[0] = 0; d_vec[1] = 1; d_vec[2] = 2;
    thrust::for_each(d_vec.begin(), d_vec.end(), printf_functor());
}

我用nvcc -arch=sm_20 fe.cu.

当我使用 ./a.out 运行时,我得到以下输出:

terminate called after throwing an instance of 'thrust::system::system_error'
  what():  unspecified launch failure
Aborted

以下是有关用于运行代码的 GPU 的一些信息:

   --- General Information for device 0 ---
Name:  Tesla C2075
Compute capability:  2.0
Clock rate:  1147000
Device copy overlap:  Enabled
Kernel execution timeout :  Disabled
   --- Memory Information for device 0 ---
Total global mem:  5636554752
Total constant Mem:  65536
Max mem pitch:  2147483647
Texture Alignment:  512
   --- MP Information for device 0 ---
Multiprocessor count:  14
Shared mem per mp:  49152
Registers per mp:  32768
Threads in warp:  32
Max threads per block:  1024
Max thread dimensions:  (1024, 1024, 64)
Max grid dimensions:  (65535, 65535, 65535)
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1 回答 1

6

可能您在代码中的意思是:

    printf("%d\n", x);

而不是这个:

    printf("%d\n");

当我对您的代码进行更改时,它会为我编译并成功运行。

我承认文档中的错误,并将在推力 googlegroup 推力用户上报告它。

于 2013-07-22T19:02:56.993 回答