我是 OpenCL 的初学者，我正在尝试使以下内核工作。当我运行程序时，我在内核程序的构建过程中遇到错误。更具体的错误如下：
Error: Failed to build program executable!
<program source>:19:64: error: invalid address space for argument to __kernel function
__kernel void accelarate_flow(__global const t_param params,
^
你可以在这里看到内核。一开始我认为这是因为我没有在内核中定义结构，但即使我添加了它们，问题仍然存在。我在这里做错了什么？
const char *accelerate_flow_kernel_source =
#pragma OPENCL EXTENSION cl_khr_fp64 : enable
typedef struct
{
int nx;
int ny;
int maxIters;
int reynolds_dim;
double density;
double accel;
double omega;
} t_param;
typedef struct
{
double speeds[9];
} t_speed;
__kernel void accelarate_flow(__global const t_param params,
__global const int* obstacles,
__global t_speed* cells,
const unsigned int count)
{
int pos = get_global_id(0);
if(pos >= count || pos % params.nx != 0) return;
double w1,w2;
w1 = params.density * params.accel / 9.0;
w2 = params.density * params.accel / 36.0;
if(!obstacles[pos] &&
(cells[pos].speeds[3] - w1) > 0.0 &&
(cells[pos].speeds[6] - w2) > 0.0 &&
(cells[pos].speeds[7] - w2) > 0.0 )
{
cells[pos].speeds[1] += w1;
cells[pos].speeds[5] += w2;
cells[pos].speeds[8] += w2;
cells[pos].speeds[3] -= w1;
cells[pos].speeds[6] -= w2;
cells[pos].speeds[7] -= w2;
}
}