vecAdd(float* A,float* B,float* C,int n) 要输入指向3段内存的指针名,也就是 a, b, c。 gettimeofday 函数来得到精确时间。它的精度可以达到微妙,是C标准库的函数。 最后的 free 函数把申请的3段内存释放掉。 编译: g++ -O3 main_cpu.cpp -o VectorSumCPU 1. 我们再看一下 CUDA 执行向量相加的...
代码: 1#include <stdio.h>2#include <cuda_runtime.h>3__global__void4vectorAdd(constfloat*A,constfloat*B,float*C,intnumElements)5{6inti = blockDim.x * blockIdx.x +threadIdx.x;78if(i <numElements)9{10C[i] = A[i] +B[i];11}12}1314intmain(void)15{16//检测cuda返回值17cudaEr...
importtorchimporttritonimporttriton.languageastl@triton.jitdefadd_kernel(x_ptr,# *Pointer* to first input vector.y_ptr,# *Pointer* to second input vector.output_ptr,# *Pointer* to output vector.n_elements,# Size of the vector.BLOCK_SIZE:tl.constexpr,# Number of elements each program should...
}intmain(void) {inth_a[N], h_b[N], h_c[N];//向量初始化for(inti =0; i < N; i++) { h_a[i]=2* i*i; h_b[i]=i; }//调用CPU向量加法函数cpuAdd (h_a, h_b, h_c);//输出结果printf("Vector addition on CPU\n");for(inti =0; i < N; i++) { printf("The sum...
x; if ( i < numElements ) { C[i] = A[i] + B[i] + 0.0f; } } int main(int argc, char* argv[]) { //int numElements = 50000; int numElements = 50000000; size_t size = numElements * sizeof(float); std::printf("[Vector addition of %d elements]\n", numElements); ...
Let's walk through the following CUDA C vector addition program: #include <stdio.h> // Size of array #define N 1048576 // Kernel __global__ void add_vectors(double *a, double *b, double *c) { int id = blockDim.x * blockIdx.x + threadIdx.x; if(id < N) c[id] = a[id]...
This chapter introduces the main concepts behind the CUDA programming model by outlining how they are exposed in C. Full code for the vector addition example used in this chapter and the next can be found in the vectorAdd CUDA sample. ...
0x2. 教程1 Vector Addition阅读 在这里插入图片描述 意思是这一节教程会介绍Triton编程模型定义kernel的基本写法,此外也会介绍一下怎么实现一个良好的benchmark测试。下面来看计算kernel实现,我把注释改成中文了: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 import torch import triton import triton.language...
In the vector addition code sample of Kernels, the vectors need to be copied from host memory to device memory: ∕∕ Device code __global__ void VecAdd(float* A, float* B, float* C, int N) { (continues on next page) 24 Chapter 3. Programming Interface CUDA C++ Programming Guide, ...
> >(d_a, d_b, d_c);//Copy result back to host memory from device memorycudaMemcpy(h_c, d_c, N * sizeof(int), cudaMemcpyDeviceToHost);cudaDeviceSynchronize();int Correct = 1;printf("Vector addition on GPU \n");//Printing result on consolefor (int i = 0; i < N; i++)...