编译helloworld.cu时遇到问题 [英] Trouble compiling helloworld.cu

问题描述

在Ubuntu 10.10中编译此hello world示例

While compiling this hello world sample in Ubuntu 10.10

这是从 CUDA示例，第3章（未提供编译指令>：@）

This is from CUDA by Example, chapter 3 (No compile instructions provided >:@)

#include <iostream>

__global__ void kernel (void){


}

int main(void){

    kernel <<<1,1>>>();
        printf("Hellow World!\n");
    return 0;

}

我明白了：

$ nvcc -lcudart hello.cu hello.cu（11）：错误：标识符 printf为
未定义

$ nvcc -lcudart hello.cu hello.cu(11): error: identifier "printf" is undefined

在
/tmp/tmpxft_00007812_00000000-4_hello.cpp1.ii的编译中检测到1个错误。

1 error detected in the compilation of "/tmp/tmpxft_00007812_00000000-4_hello.cpp1.ii".

为什么？

推荐答案

您需要包括 stdio.h 或 cstdio 不是 iostream （用于 std :: cout 的东西）用于 printf （请参阅 man 3 printf ）。我在此处。

You need to include stdio.h or cstdionot iostream (which is for std::cout stuff) for printf (see man 3 printf). I found the source code for the book here.

chapter03 / hello_world.cu 实际上是：

/*
 * Copyright 1993-2010 NVIDIA Corporation.  All rights reserved.
 *
 * NVIDIA Corporation and its licensors retain all intellectual property and 
 * proprietary rights in and to this software and related documentation. 
 * Any use, reproduction, disclosure, or distribution of this software 
 * and related documentation without an express license agreement from
 * NVIDIA Corporation is strictly prohibited.
 *
 * Please refer to the applicable NVIDIA end user license agreement (EULA) 
 * associated with this source code for terms and conditions that govern 
 * your use of this NVIDIA software.
 * 
 */


#include "../common/book.h"

int main( void ) {
    printf( "Hello, World!\n" );
    return 0;
}

其中 ../ common / book.h 包括 stdio.h 。

README.txt 文件详细说明了如何编译示例：

The README.txt file details how to compile the examples:

The vast majority of these code examples can be compiled quite easily by using 
NVIDIA's CUDA compiler driver, nvcc. To compile a typical example, say 
"example.cu," you will simply need to execute:

> nvcc example.cu

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