使用Visual 2013 IDE编译CUDA Mex文件
使用Visual 2013 IDE编译CUDA Mex文件
提问于 2015-05-23 02:27:53
我正在尝试编译以下程序，这是一个用于MATLAB的CUDA mex文件，使用Visual 2013。
有使用说明在MATLAB的官方网站上只有C++ mex文件，而不是为CUDA Mex。
因此，在遵循Mathworks的正式说明时，我对我的项目设置做了以下其他更改：
- 我用安装的CUDA 6.5运行时使用Visual项目创建了一个项目。
- 在my VS项目的Linker属性中包含了libs (libmx.lib、libmex.lib、libmat.lib、gpu.lib)，
- 添加了一个目录包含，(MATLABROOT)\toolbox\distcomp\gpu\extern\include；
不过，我还是得到了许多未解决的外部符号错误。什么是正确的方法来做到这一点，因为没有官方的文件可用于编译CUDA Mex使用VS IDE？有谁知道怎样才是正确的方法吗？我一定是错过了什么环境，有人能帮忙吗？
我的程序(从MATLAB示例文件mexGPUExample.cu复制)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);
}当我试图编译我的程序时，我会遇到错误：
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)回答 1
Stack Overflow用户
回答已采纳
发布于 2015-05-23 03:50:31
在您的情况下，主要问题似乎是您选择了错误的项目类型。可能您使用的是MFC，而不是常规的Win32项目(带有DLL选项)。然而，构建MEX文件需要更多的设置，这些设置包括：(a)使用作为并行计算工具箱一部分的mxGPUArray类型；(b)包含一个CUDA内核(自定义GPU设备代码)，该内核由NVIDIA CUDA SDK编译器nvcc编译。
假设您已经配置了通常的MEX相关设置，则选择CUDA“构建自定义”配置nvcc作为.cu文件的编译器。然后，您还可能需要指定CUDA运行时库，同时通过检查“从父或项目默认值继承”框确保仍然有所有标准Windows库依赖项链接：
它对我来说是很好的编译和链接。
但是，我设置了Visual项目使用属性表(MATLAB.props)，如下所述。这将自动获得我前面提到的标准MEX设置。编辑：我在属性表中添加了并行计算工具箱支持。您只需要添加上面所示的cudart_static.lib部件，并选择CUDA构建自定义来使用nvcc编译.cu文件。
通过构建自定义添加CUDA6.5SDK设置。首先，右键单击项目(不是解决方案)：
检查要使用的CUDA自定义(在本例中为SDK6.5)：
如果您想编辑这些字段，请不要编辑它们：
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/30408286
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