cuda Installing cuda Very simple CUDA code

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Example

#include "cuda_runtime.h"
#include "device_launch_parameters.h"
#include "cuda.h"
#include <device_functions.h>
#include <cuda_runtime_api.h>

#include<stdio.h>
#include <cmath>
#include<stdlib.h>
#include<iostream>
#include <iomanip>



using namespace std;
typedef unsigned int uint;


const uint N = 1e6;

__device__ uint Val2[N];

__global__ void set0()
{
    uint index = __mul24(blockIdx.x, blockDim.x) + threadIdx.x;
    if (index < N)
    {
        Val2[index] = 0;
    }

}


int main()
{
    int numThreads = 512;
    uint numBlocks = (uint)ceil(N / (double)numThreads);
    set0 << < numBlocks, numThreads >> >();

    return 0;
}


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