使用Visual Studio 2013 IDE编译CUDA Mex文件

Question

我正在尝试使用Visual Studio 2013编译以下程序，这是一个用于MATLAB的CUDA mex文件。
MATLAB的官方网站上只有instructions可用于C ++ Mex文件，而不是CUDA mex。 因此，在遵循Mathworks上的官方说明时，我对项目设置进行了以下更改：
1.我使用安装了CUDA 6.5运行时的Visual Studio项目创建了一个项目 2.在我的VS项目的链接器属性中包含libs（libmx.lib，libmex.lib，libmat.lib，gpu.lib），
3.添加了目录include，（MATLABROOT）\ toolbox \ distcomp \ gpu \ extern \ include;

我仍然遇到许多未解决的外部符号错误。正确的方法是什么，因为没有可用于使用VS IDE编译CUDA Mex的官方文档？有谁知道这样做的正确方法是什么？当然我错过了一些设置，有人可以帮忙吗？

我的程序（从MATLAB示例文件复制，mexGPUExample.cu）如下：

   **
/*
* Example of how to use the mxGPUArray API in a MEX file.  This example shows
* how to write a MEX function that takes a gpuArray input and returns a
* gpuArray output, e.g. B=mexFunction(A).
*
* Copyright 2012 The MathWorks, Inc.
*/
#include "cuda_runtime.h"
#include "device_launch_parameters.h"
#include "mex.h"
#include "gpu/mxGPUArray.h"

/*
* Device code
*/
void __global__ TimesTwo(double const * const A,
    double * const B,
    int const N)
{
    /* Calculate the global linear index, assuming a 1-d grid. */
    int const i = blockDim.x * blockIdx.x + threadIdx.x;
    if (i < N) {
        B[i] = 2.0 * A[i];
    }
}

/*
* Host code
*/

void mexFunction(int nlhs, mxArray *plhs[],
    int nrhs, mxArray const *prhs[])
{
    /* Declare all variables.*/
    mxGPUArray const *A;
    mxGPUArray *B;
    double const *d_A;
    double *d_B;
    int N;
    char const * const errId = "parallel:gpu:mexGPUExample:InvalidInput";
    char const * const errMsg = "Invalid input to MEX file.";

    /* Choose a reasonably sized number of threads for the block. */
    int const threadsPerBlock = 256;
    int blocksPerGrid;

    /* Initialize the MathWorks GPU API. */
    mxInitGPU();

    /* Throw an error if the input is not a GPU array. */
    if ((nrhs != 1) || !(mxIsGPUArray(prhs[0]))) {
        mexErrMsgIdAndTxt(errId, errMsg);
    }

    A = mxGPUCreateFromMxArray(prhs[0]);

    /*
    * Verify that A really is a double array before extracting the pointer.
    */
    if (mxGPUGetClassID(A) != mxDOUBLE_CLASS) {
        mexErrMsgIdAndTxt(errId, errMsg);
    }

    /*
    * Now that we have verified the data type, extract a pointer to the input
    * data on the device.
    */
    d_A = (double const *)(mxGPUGetDataReadOnly(A));

    /* Create a GPUArray to hold the result and get its underlying pointer. */
    B = mxGPUCreateGPUArray(mxGPUGetNumberOfDimensions(A),
        mxGPUGetDimensions(A),
        mxGPUGetClassID(A),
        mxGPUGetComplexity(A),
        MX_GPU_DO_NOT_INITIALIZE);
    d_B = (double *)(mxGPUGetData(B));

    /*
    * Call the kernel using the CUDA runtime API. We are using a 1-d grid here,
    * and it would be possible for the number of elements to be too large for
    * the grid. For this example we are not guarding against this possibility.
    */
    N = (int)(mxGPUGetNumberOfElements(A));
    blocksPerGrid = (N + threadsPerBlock - 1) / threadsPerBlock;
    TimesTwo <<< blocksPerGrid, threadsPerBlock >>>(d_A, d_B, N);

    /* Wrap the result up as a MATLAB gpuArray for return. */
    plhs[0] = mxGPUCreateMxArrayOnGPU(B);

    /*
    * The mxGPUArray pointers are host-side structures that refer to device
    * data. These must be destroyed before leaving the MEX function.
    */
    mxGPUDestroyGPUArray(A);
    mxGPUDestroyGPUArray(B);
}

我尝试编译程序时遇到的错误：

Error   66  error LNK1120: 64 unresolved externals  
Error   64  error LNK2001: unresolved external symbol _fltused  
Error   62  error LNK2001: unresolved external symbol _RTC_InitBase 
Error   63  error LNK2001: unresolved external symbol _RTC_Shutdown 
Error   65  error LNK2001: unresolved external symbol mainCRTStartup    
Error   58  error LNK2019: unresolved external symbol __imp__dsign referenced in function "bool __cdecl signbit(double)" (?signbit@@YA_NN@Z)    
Error   60  error LNK2019: unresolved external symbol __imp__fdsign referenced in function "bool __cdecl signbit(float)" (?signbit@@YA_NM@Z)    
Error   61  error LNK2019: unresolved external symbol __imp__hypotf referenced in function hypotf   
Error   59  error LNK2019: unresolved external symbol __imp__ldsign referenced in function "bool __cdecl signbit(long double)" (?signbit@@YA_NO@Z)  
Error   39  error LNK2019: unresolved external symbol __imp_acosf referenced in function "float __cdecl acos(float)" (?acos@@YAMM@Z)    
Error   12  error LNK2019: unresolved external symbol __imp_acoshf referenced in function "float __cdecl acosh(float)" (?acosh@@YAMM@Z) 
Error   40  error LNK2019: unresolved external symbol __imp_asinf referenced in function "float __cdecl asin(float)" (?asin@@YAMM@Z)    
Error   13  error LNK2019: unresolved external symbol __imp_asinhf referenced in function "float __cdecl asinh(float)" (?asinh@@YAMM@Z) 
Error   42  error LNK2019: unresolved external symbol __imp_atan2f referenced in function "float __cdecl atan2(float,float)" (?atan2@@YAMMM@Z)  
Error   41  error LNK2019: unresolved external symbol __imp_atanf referenced in function "float __cdecl atan(float)" (?atan@@YAMM@Z)    
Error   14  error LNK2019: unresolved external symbol __imp_atanhf referenced in function "float __cdecl atanh(float)" (?atanh@@YAMM@Z) D:\GitHub\arrayfire-windows-scripts\SimpleCUDAProj\CUDA_Mex\CUDA_Mex\CUDA_Times_Two.cu.obj  CUDA_Mex
Error   29  error LNK2019: unresolved external symbol __imp_cbrtf referenced in function "float __cdecl cbrt(float)" (?cbrt@@YAMM@Z)    
Error   55  error LNK2019: unresolved external symbol __imp_ceilf referenced in function "float __cdecl ceil(float)" (?ceil@@YAMM@Z)    
Error   36  error LNK2019: unresolved external symbol __imp_copysignf referenced in function "float __cdecl copysign(float,float)" (?copysign@@YAMMM@Z) 
Error   43  error LNK2019: unresolved external symbol __imp_cosf referenced in function "float __cdecl cos(float)" (?cos@@YAMM@Z)   
Error   46  error LNK2019: unresolved external symbol __imp_coshf referenced in function "float __cdecl cosh(float)" (?cosh@@YAMM@Z)    
Error   33  error LNK2019: unresolved external symbol __imp_erfcf referenced in function "float __cdecl erfc(float)" (?erfc@@YAMM@Z)    
Error   32  error LNK2019: unresolved external symbol __imp_erff referenced in function "float __cdecl erf(float)" (?erf@@YAMM@Z)   
Error   8   error LNK2019: unresolved external symbol __imp_exp2f referenced in function "float __cdecl exp2(float)" (?exp2@@YAMM@Z)    
Error   49  error LNK2019: unresolved external symbol __imp_expf referenced in function "float __cdecl exp(float)" (?exp@@YAMM@Z)   
Error   9   error LNK2019: unresolved external symbol __imp_expm1f referenced in function "float __cdecl expm1(float)" (?expm1@@YAMM@Z) 
Error   28  error LNK2019: unresolved external symbol __imp_fdimf referenced in function "float __cdecl fdim(float,float)" (?fdim@@YAMMM@Z) 
Error   56  error LNK2019: unresolved external symbol __imp_floorf referenced in function "float __cdecl floor(float)" (?floor@@YAMM@Z) 
Error   38  error LNK2019: unresolved external symbol __imp_fmaf referenced in function "float __cdecl fma(float,float,float)" (?fma@@YAMMMM@Z) 
Error   7   error LNK2019: unresolved external symbol __imp_fmaxf referenced in function "float __cdecl fmax(float,float)" (?fmax@@YAMMM@Z) 
Error   6   error LNK2019: unresolved external symbol __imp_fminf referenced in function "float __cdecl fmin(float,float)" (?fmin@@YAMMM@Z) 
Error   57  error LNK2019: unresolved external symbol __imp_fmodf referenced in function "float __cdecl fmod(float,float)" (?fmod@@YAMMM@Z) 
Error   19  error LNK2019: unresolved external symbol __imp_frexp referenced in function frexpf 
Error   17  error LNK2019: unresolved external symbol __imp_ilogbf referenced in function "int __cdecl ilogb(float)" (?ilogb@@YAHM@Z)   
Error   15  error LNK2019: unresolved external symbol __imp_ldexp referenced in function ldexpf 
Error   34  error LNK2019: unresolved external symbol __imp_lgammaf referenced in function "float __cdecl lgamma(float)" (?lgamma@@YAMM@Z)  
Error   25  error LNK2019: unresolved external symbol __imp_llrintf referenced in function "__int64 __cdecl llrint(float)" (?llrint@@YA_JM@Z)   
Error   22  error LNK2019: unresolved external symbol __imp_llroundf referenced in function "__int64 __cdecl llround(float)" (?llround@@YA_JM@Z)    
Error   51  error LNK2019: unresolved external symbol __imp_log10f referenced in function "float __cdecl log10(float)" (?log10@@YAMM@Z) 
Error   11  error LNK2019: unresolved external symbol __imp_log1pf referenced in function "float __cdecl log1p(float)" (?log1p@@YAMM@Z) 
Error   10  error LNK2019: unresolved external symbol __imp_log2f referenced in function "float __cdecl log2(float)" (?log2@@YAMM@Z)    
Error   16  error LNK2019: unresolved external symbol __imp_logbf referenced in function "float __cdecl logb(float)" (?logb@@YAMM@Z)    
Error   50  error LNK2019: unresolved external symbol __imp_logf referenced in function "float __cdecl log(float)" (?log@@YAMM@Z)   
Error   24  error LNK2019: unresolved external symbol __imp_lrintf referenced in function "long __cdecl lrint(float)" (?lrint@@YAJM@Z)  
Error   21  error LNK2019: unresolved external symbol __imp_lroundf referenced in function "long __cdecl lround(float)" (?lround@@YAJM@Z)   
Error   52  error LNK2019: unresolved external symbol __imp_modff referenced in function "float __cdecl modf(float,float *)" (?modf@@YAMMPEAM@Z)    
Error   26  error LNK2019: unresolved external symbol __imp_nearbyintf referenced in function "float __cdecl nearbyint(float)" (?nearbyint@@YAMM@Z) 
Error   37  error LNK2019: unresolved external symbol __imp_nextafterf referenced in function "float __cdecl nextafter(float,float)" (?nextafter@@YAMMM@Z)  
Error   53  error LNK2019: unresolved external symbol __imp_powf referenced in function "float __cdecl pow(float,float)" (?pow@@YAMMM@Z)    
Error   30  error LNK2019: unresolved external symbol __imp_remainderf referenced in function "float __cdecl remainder(float,float)" (?remainder@@YAMMM@Z)  
Error   31  error LNK2019: unresolved external symbol __imp_remquof referenced in function "float __cdecl remquo(float,float,int *)" (?remquo@@YAMMMPEAH@Z) 
Error   23  error LNK2019: unresolved external symbol __imp_rintf referenced in function "float __cdecl rint(float)" (?rint@@YAMM@Z)    
Error   20  error LNK2019: unresolved external symbol __imp_roundf referenced in function "float __cdecl round(float)" (?round@@YAMM@Z) 
Error   18  error LNK2019: unresolved external symbol __imp_scalblnf referenced in function "float __cdecl scalbln(float,long)" (?scalbln@@YAMMJ@Z) 
Error   44  error LNK2019: unresolved external symbol __imp_sinf referenced in function "float __cdecl sin(float)" (?sin@@YAMM@Z)   
Error   47  error LNK2019: unresolved external symbol __imp_sinhf referenced in function "float __cdecl sinh(float)" (?sinh@@YAMM@Z)    
Error   54  error LNK2019: unresolved external symbol __imp_sqrtf referenced in function "float __cdecl sqrt(float)" (?sqrt@@YAMM@Z)    
Error   45  error LNK2019: unresolved external symbol __imp_tanf referenced in function "float __cdecl tan(float)" (?tan@@YAMM@Z)   
Error   48  error LNK2019: unresolved external symbol __imp_tanhf referenced in function "float __cdecl tanh(float)" (?tanh@@YAMM@Z)    
Error   35  error LNK2019: unresolved external symbol __imp_tgammaf referenced in function "float __cdecl tgamma(float)" (?tgamma@@YAMM@Z)
Error   27  error LNK2019: unresolved external symbol __imp_truncf referenced in function "float __cdecl trunc(float)" (?trunc@@YAMM@Z) 
Error   2   error LNK2019: unresolved external symbol atexit referenced in function "void __cdecl __nv_cudaEntityRegisterCallback(void * *)" (?__nv_cudaEntityRegisterCallback@@YAXPEAPEAX@Z)   
Error   5   error LNK2019: unresolved external symbol fabs referenced in function "double __cdecl abs(double)" (?abs@@YANN@Z)   
Error   3   error LNK2019: unresolved external symbol labs referenced in function "long __cdecl abs(long)" (?abs@@YAJJ@Z)   
Error   4   error LNK2019: unresolved external symbol llabs referenced in function "__int64 __cdecl abs(__int64)" (?abs@@YA_J_J@Z)

Answer 1

您的案例中的主要问题似乎是您选择了错误的项目类型。可能你使用的是MFC DLL而不是常规的Win32项目（带有DLL选项）。但是，构建MEX文件需要更多设置：（a）使用作为并行计算工具箱一部分的mxGPUArray类型，以及（b）包含使用以下内容编译的CUDA内核（自定义GPU设备代码）。 NVIDIA CUDA SDK编译器，nvcc。

假设您已配置了常用的与MEX相关的设置，请选择CUDA＆＃34;构建自定义＆＃34;将nvcc配置为.cu文件的编译器。然后，您可能还需要指定CUDA运行时库，同时通过检查＆＃34;继承自父项或项目默认值＆＃34;确保您仍然链接所有标准Windows库依赖项。框：

这样编译和链接对我来说很好。

但是，我设置了我的Visual Studio项目using a property sheet (MATLAB.props) as described here。这将自动获得我上面提到的标准MEX设置。 编辑：我已在属性表中添加了Parallel Computing Toolbox支持。您只需要添加如上所示的cudart_static.lib部分，然后选择CUDA Build Customization来编译带有nvcc的.cu文件。

通过构建自定义添加CUDA 6.5 SDK设置。首先，右键单击项目（不是解决方案）：

检查您要使用的CUDA自定义（在本例中为SDK 6.5）：

如果您想要编辑这些字段，请不要编辑它们：