所以我试图用c&pthreads制作GPGPU模拟器,但遇到了一个相当奇怪的问题,我不知道它为什么会发生.代码如下:
#include <stdlib.h>
#include <stdio.h>
#include <pthread.h>
#include <assert.h>
// simplifies malloc
#define MALLOC(a) (a *)malloc(sizeof(a))
// Index of x/y coordinate
#define x (0)
#define y (1)
// Defines size of a block
#define BLOCK_DIM_X (3)
#define BLOCK_DIM_Y (2)
// Defines size of the grid, i.e., how many blocks
#define GRID_DIM_X (5)
#define GRID_DIM_Y (7)
// Defines the number of threads in the grid
#define GRID_SIZE (BLOCK_DIM_X * BLOCK_DIM_Y * GRID_DIM_X * GRID_DIM_Y)
// execution environment for the kernel
typedef …