CUDA Compiling Error - Need to add "include" to the linker

Question

I am trying to compile this code using the CUDA Compiler:

#include <stdio.h>
#include <stdlib.h>
#include <cuda.h>
#include <curand.h>

int main(void)
{
    size_t n = 100;
    size_t i;
    int *hostData;
    unsigned int *devData;
    hostData = (int *)calloc(n, sizeof(int));
    curandGenerator_t gen;
    curandCreateGenerator(&gen, CURAND_RNG_PSEUDO_DEFAULT);
    curandSetPseudoRandomGeneratorSeed(gen, 12345);
    cudaMalloc((void **)&devData, n * sizeof(int));
    curandGenerate(gen, devData, n);
    cudaMemcpy(hostData, devData, n * sizeof(int), cudaMemcpyDeviceToHost);
    for(i = 0; i < n; i++)
    {
        printf("%d ", hostData[i]);
    }
    printf("\n");
    curandDestroyGenerator (gen);
    cudaFree ( devData );
    free ( hostData );
    return 0;
}

By using this command:

nvcc -o RNG RNG7.cu

This is the output I receive:

[root@client2 CUDA]$ nvcc -o RNG7 RNG7.cu
/tmp/tmpxft_00001ed1_00000000-13_RNG7.o: In function `main':
tmpxft_00001ed1_00000000-1_RNG7.cudafe1.cpp:(.text+0x6c): undefined reference to `curandCreateGenerator'
tmpxft_00001ed1_00000000-1_RNG7.cudafe1.cpp:(.text+0x7a): undefined reference to `curandSetPseudoRandomGeneratorSeed'
tmpxft_00001ed1_00000000-1_RNG7.cudafe1.cpp:(.text+0xa0): undefined reference to `curandGenerate'
tmpxft_00001ed1_00000000-1_RNG7.cudafe1.cpp:(.text+0x107): undefined reference to `curandDestroyGenerator'
collect2: ld returned 1 exit status

In another discussion they stated that this problem could be related to a linker problem or something, that I need to manually link the library in the compiler command to include the ones stated on my code.

I have no idea to achieve this, can someone please help with this?

Thanks!

I'm not sure what the name of the curand library is, but your command line should look something like `nvcc -o RNG RNG7.cu -lcurand` in order to link against it. — Jared Hoberock, Aug 01 '12 at 02:58
possible duplicate of [CURAND Library - Compiling Error - Undefined reference to functions](http://stackoverflow.com/questions/11734578/curand-library-compiling-error-undefined-reference-to-functions) — talonmies, Aug 01 '12 at 04:00
@Wilo Maldonado: Didn't you just ask this exact same question? — talonmies, Aug 01 '12 at 04:02
It's the same question with the same linker error. The answer of the other question by @asm is a correct solution. — pQB, Aug 01 '12 at 06:27

score 2 · Answer 1 · answered Aug 02 '13 at 19:08

2

Use the following options.

nvcc -o RNG7 RNG7.cu -lcurand -Xlinker=-rpath,/usr/local/cuda/lib

it will work like charm.

answered Aug 02 '13 at 19:08

lxkarthi

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CUDA Compiling Error - Need to add "include" to the linker

1 Answers1