CUDA

CUDA（Compute Unified Device Architecture，统一计算架构）

异构平行计算系统（heterogeneous parallel computing systems）

latency devices (CPU cores)

throughput devices (GPU cores)

单进程多数据(single process and mutiple data, SPMD) 模型

#include <stdio.h>
#include <cuda.h>
__global__ void my_kernel() { 

printf(“Hello World from GPU!\n”);

} 
int main() 
{ 

printf("Hello World from CPU!\n"); my_kernel<<<1,1>>>(); cudaDeviceSynchronize()

	return 0; 
} 

编译输出

$ nvcc hello_world.cu 
$ ./a.out 
Hello World from CPU!
Hello World from GPU!