CL_INVALID_KERNEL_NAME:在内核中使用结构(Opencl)

时间:2018-12-17 01:18:46

标签: c++ kernel opencl

我正在尝试为OpenCL做n身体练习。我为我的bodyForce函数使用一个结构,我需要给它一个实例作为该函数的参数。现在,我尝试在内核文件中声明该结构,因为我的内核不知道该结构(很明显),但是随后出现此OpenCL错误:

#define CL_INVALID_KERNEL_NAME                      -46
  • 我检查了内核名称,它与之匹配
  • 我将内核名称更改为其他名称
  • 我使用了头文件,const char指针,并在内核文件中实现了结构

代码:

Opencl设置:

...
m_addKernel = clCreateKernel(m_program, "bodyForce", &err);
if (err != CL_SUCCESS)
{
    cout << err << endl;
    cout << "Error occured: clCreateKernel" << endl;
}
...

srcKernel.cl:

__kernel
typedef struct { float x, y, z, vx, vy, vz; } Body;
void bodyForce(__global Body *p, __global float *dtt, __global int *nn){
   float dt = *dtt;
   int n = *nn;
   for (int i = 0; i < n; i++) {
       float Fx = 0.0f; float Fy = 0.0f; float Fz = 0.0f;
       for (int j = 0; j < n; j++) {
            float dx = p[j].x - p[i].x;
            float dy = p[j].y - p[i].y;
            float dz = p[j].z - p[i].z;
            float distSqr = dx * dx + dy * dy + dz * dz + 1e-9f;
            float invDist = 1.0f / sqrtf(distSqr);
            float invDist3 = invDist * invDist * invDist;

        Fx += dx * invDist3;
        Fy += dy * invDist3;
        Fz += dz * invDist3;
    }

    p[i].vx += dt * Fx;
    p[i].vy += dt * Fy;
    p[i].vz += dt * Fz;
}

}

我认为其他事情不重要,但是如果我错过了一些事情,请告诉我!

谢谢。


更新:

如果我将结构像这样设置在__kernel之上:

typedef struct { float x, y, z, vx, vy, vz; } Body;
__kernel
void bodyForce(__global Body *p, __global float *dtt, __global int *nn){
...
}

然后我收到此错误消息:

ptxas application ptx input, line 94; error   : Type of argument does not match formal parameter '%VAParam'
ptxas application ptx input, line 135; error   : Type of argument does not match formal parameter '%VAParam'
ptxas application ptx input, line 176; error   : Type of argument does not match formal parameter '%VAParam'
ptxas application ptx input, line 222; error   : Type of argument does not match formal parameter '%VAParam'
ptxas application ptx input, line 259; error   : Type of argument does not match formal parameter '%VAParam'
ptxas application ptx input, line 296; error   : Type of argument does not match formal parameter '%VAParam'
ptxas application ptx input, line 333; error   : Type of argument does not match formal parameter '%VAParam'
ptxas fatal   : Ptx assembly aborted due to errors

1 个答案:

答案 0 :(得分:1)

您需要在函数定义之前放置__kernel属性:

typedef struct { float x, y, z, vx, vy, vz; } Body;

__kernel
void bodyForce(__global Body *p, __global float *dtt, __global int *nn) {
}