“不知道该怎么办” nvcc致命错误

问题描述

我在Ubuntu终端中使用命令行。

I use the command lines in Ubuntu's terminal.

我正在尝试编译CUDA_Compiler_Driver_NVCC.pdf中显示的三个文件

And I am trying to compile the three files presented in CUDA_Compiler_Driver_NVCC.pdf

当我使用命令时在这3个文件的文档给出的代码行中，确实出现以下错误：

When I do use the command line given by the documentation on these 3 files, I do get the following errors:

nvcc fatal：不知道如何处理'-dc'

nvcc fatal : don't know what to do with'-dc'

如果我在命令行中删除-dc，也会收到以下错误：
nvcc fatal：不知道如何处理'-arch = sm = 20'

If I erase -dc in the command line, I do get the following error too:nvcc fatal : don't know what to do with'-arch=sm=20'

有人知道我该如何解决这个问题？

Do anyone know how I could fix this issue ?

非常感谢您的帮助

Gibo

在下面，您会找到我在终端中输入的命令行以及文件。

Below, you will find the command line I entered in the terminal, and the files.

使用的命令行：
nvcc –arch = sm_20 –dc a.cu b.cu
nvcc –arch = sm_20 ao bo

Command line used:nvcc –arch=sm_20 –dc a.cu b.cunvcc –arch=sm_20 a.o b.o

文件代码（只是文档的复制粘贴）：
（似乎代码警察在粘贴时会发生变化，对此小问题深表歉意）。

Files code (just a copy paste of the documentation):(it seems the code police changes when pasted, sorry for this small issue)

******* b.h ***********
#define N 8

extern __device__ int g[N];
extern __device__ void bar(void);

******* b.cu***********
#include "b.h"
__device__ int g[N];
__device__ void bar (void)
{
g[threadIdx.x]++;
}

******* a.cu ***********
#include <stdio.h>

#include "b.h"

__global__ void foo (void) {
__shared__ int a[N];
a[threadIdx.x] = threadIdx.x;
__syncthreads();
g[threadIdx.x] = a[blockDim.x - threadIdx.x - 1];
}

bar();

int main (void) {
unsigned int i;
int *dg, hg[N];

int sum = 0;

foo<<<1, N>>>();

if(cudaGetSymbolAddress((void**)&dg, g)){
printf("couldn't get the symbol addr\n");
return 1;
}

if(cudaMemcpy(hg, dg, N * sizeof(int), cudaMemcpyDeviceToHost)){
printf("couldn't memcpy\n");
return 1;
}

for (i = 0; i < N; i++) {
sum += hg[i];
}

if (sum == 36) {
printf("PASSED\n");
} else {
printf("FAILED (%d)\n", sum);
}

return 0;
}

推荐答案

请确保您使用的是正确版本的nvcc。我遇到了这样的问题，这是因为我使用的是NVCC 5.5而不是6.0。

Make sure you are using the right version of nvcc. I had a problem like that and it was because I was using NVCC 5.5 instead of 6.0.

还要确保破折号具有正确的符号：use-（0x2D）and不是–（0xD0）。

Also make sure the dashes have the right symbol: use - (0x2D) and not – (0xD0).

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