cudaMalloc导致"未知错误"在CUDA

时间:2015-04-21 00:58:44

标签: cuda

我正在尝试按照CUDA By Example的书,然后开始尝试他们的一些示例。

"你好世界"程序运行没有问题。对于以下程序,它编译得很好,但是当我执行时,我收到了消息:

第26行的simple_kernel_params.cu中的未知错误

第26行是第一个cudaMalloc命令。

有经验的人可以提供一些提示我应该如何解决这个问题吗?非常感谢!

/*
 * 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"

__global__ void add( int a, int b, int *c ) {
    *c = a + b;
}

int main( void ) {
    int c;
    int *dev_c;
    HANDLE_ERROR( cudaMalloc( (void**)&dev_c, sizeof(int) ) );

    add<<<1,1>>>( 2, 7, dev_c );

    HANDLE_ERROR( cudaMemcpy( &c, dev_c, sizeof(int),
                          cudaMemcpyDeviceToHost ) );
    printf( "2 + 7 = %d\n", c );
    HANDLE_ERROR( cudaFree( dev_c ) );

    return 0;
}

1 个答案:

答案 0 :(得分:1)

一些想法可能是问题的根源: