2010-01-14 103 views
10

我创建了一个新的Win32控制台应用程序作为一个空项目 我使用Visual Studio 2008 C++运行Windows 7 64位。我试图从本文的底部获取示例代码来构建:http://www.ddj.com/architect/207200659初学者无法解析的外部符号CUDA程序

我将CUDA构建规则v2.3.0添加到项目的自定义构建规则中。它是在现有的规则文件列表

复选框我在源文件(文件夹/过滤器???)

在该文件中我添加以下代码创建moveArrays.cu的唯一的事情:

// moveArrays.cu 
// 
// demonstrates CUDA interface to data allocation on device (GPU) 
// and data movement between host (CPU) and device. 

#include <stdio.h> 
#include <assert.h> 
#include <cuda.h> 
int main(void) 
{ 
    float *a_h, *b_h;  // pointers to host memory 
    float *a_d, *b_d;  // pointers to device memory 
    int N = 14; 
    int i; 
    // allocate arrays on host 
    a_h = (float *)malloc(sizeof(float)*N); 
    b_h = (float *)malloc(sizeof(float)*N); 
    // allocate arrays on device 
    cudaMalloc((void **) &a_d, sizeof(float)*N); 
    cudaMalloc((void **) &b_d, sizeof(float)*N); 
    // initialize host data 
    for (i=0; i<N; i++) { 
     a_h[i] = 10.f+i; 
     b_h[i] = 0.f; 
    } 
    // send data from host to device: a_h to a_d 
    cudaMemcpy(a_d, a_h, sizeof(float)*N, cudaMemcpyHostToDevice); 
    // copy data within device: a_d to b_d 
    cudaMemcpy(b_d, a_d, sizeof(float)*N, cudaMemcpyDeviceToDevice); 
    // retrieve data from device: b_d to b_h 
    cudaMemcpy(b_h, b_d, sizeof(float)*N, cudaMemcpyDeviceToHost); 
    // check result 
    for (i=0; i<N; i++) 
     assert(a_h[i] == b_h[i]); 
    // cleanup 
    free(a_h); free(b_h); 
    cudaFree(a_d); cudaFree(b_d); 
} 

当我建立我得到这些错误:

 
1>------ Build started: Project: CUDASandbox, Configuration: Debug x64 ------ 
1>Linking... 
1>moveArrays.cu.obj : error LNK2019: unresolved external symbol cudaFree referenced in function main 
1>moveArrays.cu.obj : error LNK2019: unresolved external symbol cudaMemcpy referenced in function main 
1>moveArrays.cu.obj : error LNK2019: unresolved external symbol cudaMalloc referenced in function main 
1>moveArrays.cu.obj : error LNK2019: unresolved external symbol __cudaUnregisterFatBinary referenced in function __cudaUnregisterBinaryUtil 
1>moveArrays.cu.obj : error LNK2019: unresolved external symbol __cudaRegisterFatBinary referenced in function __sti____cudaRegisterAll_45_tmpxft_00001264_00000000_6_moveArrays_cpp1_ii_main 
1>D:\Stuff\Programming\Visual Studio 2008\Projects\CUDASandbox\x64\Debug\CUDASandbox.exe : fatal error LNK1120: 5 unresolved externals 
1>Build log was saved at "file://d:\Stuff\Programming\Visual Studio 2008\Projects\CUDASandbox\CUDASandbox\x64\Debug\BuildLog.htm" 
1>CUDASandbox - 6 error(s), 0 warning(s) 
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ========== 

我可以编译和运行与SDK附带的示例CUDA程序。我知道我在这里错过了一些简单的东西,但它是什么?

回答

14

我想你错过了链接到正确的库。 确保您在“配置属性 - >链接器 - >输入”下添加了CUDA库。 请参阅this。需要

+3

你是对的。我必须将“$(CUDA_LIB_PATH); ../../ common/lib”添加到Configuration Properties-> Linker-> General-> Additional Libary Directories 和 “cudart.lib” - > Input-> Additional Dependencies – 2010-01-14 03:27:51

+1

我之前创建过我的项目时,我想让它成为一个CUDA程序并添加一个'.cu'文件。无论我在“Project - > Build Customization”中选择Cuda 5.5,在“Configuration Properties-> Linker-> Input-> Additional Dependencies”中都找不到“cudart.lib”引用的正确库,而是'在“Configuration Properties-> Linker-> General-> Additional Library Directories”找到$(CudaToolkitLibDir)'。 – DanielTuzes 2014-01-20 12:42:03

4

两件事情:

  1. 加入CUDA路径:
    转到: “配置属性 - >连接器 - >常规 - >附加Libary目录”,并添加$(CudaToolkitLibDir)到列表中。

  2. 添加CUDA实时库:
    转到:“解决方案属性 - >连接器 - >输入 - >附加依赖”,并添加cudart.lib到列表中。