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這是我的代碼我得到的malloc 3906錯誤,當我試圖填補我陣列
using namespace std;
#include <iostream>
#include <stdio.h>
#include <stdlib.h>
#define N 8000
void fillArray(int *data, int count){
for(int i =0; i < count; i++)
data[i] = (int) rand()/((int) RAND_MAX);
}
__global__ void add(int* a, int *b){
int add = 0;
int tid = threadIdx.x + blockIdx.x * blockDim.x;
if(tid < N){
add = a[tid] + b[tid];
}
}
__global__ void subtract(int* a, int *b){
int subtract = 0;
int tid = threadIdx.x + blockIdx.x * blockDim.x;
if(tid < N){
subtract = a[tid] - b[tid];
}
}
float duration(int *devA, int *devB, int blocksPerGrid, int threadsPerBlock){
cudaEvent_t start, stop;
cudaEventCreate(&start);
cudaEventCreate(&stop);
cudaEventRecord(start,0);
cudaEventRecord(stop,0);
cudaEventSynchronize(stop);
cudaMalloc((void**) &devA, N * sizeof(int));
cudaMalloc((void**) &devB, N * sizeof(int));
add<<<blocksPerGrid, threadsPerBlock>>>(devA,devB);
float elapsedTime;
cudaEventElapsedTime(&elapsedTime,start,stop);
cudaEventDestroy(start);
cudaEventDestroy(stop);
return elapsedTime;
}
int main(void) {
int *a = new int(N);
int *b = new int(N);
float dur = 0 ;
fillArray(a, N);
fillArray(b, N);
dur = duration(a,b,N,1);
cout << "Global memory version:\n";
cout << "Process completed in " << dur;
cout << "for a data set of " << N << " integers.";
return 0;
}
正如你所看到的,我補我的陣列fillArray功能的CPU側。但填數組函數給出的錯誤:
malloc.c 3906 : sYSMalloc: Assertion bla bla
我在這裏失蹤了什麼?我只是試圖填充數組。我可能會遇到什麼問題?事件如果我刪除持續時間函數中的添加函數,我得到這個錯誤。這裏有什麼問題?
寫例外充分所以人們可能會幫助你。如果你在Linux上使用valgrind這種類型的錯誤 – qwr 2013-05-13 05:23:35
可能的重複[爲什麼我會得到一個C malloc斷言失敗?](http://stackoverflow.com/questions/2987207/why-do-i-get-ac- malloc-assertion-failure) – talonmies 2013-05-13 05:33:27
這個問題與CUDA有關,你應該重新使用它。 – talonmies 2013-05-13 06:11:02