Function getKernelWorkGroupInfo

wrapcl/src/Kernels.cpp:194–305

#ifdef KERNEL_WORK_GROUP_INFO_DISPLAY
int getKernelWorkGroupInfo(
                           cl_kernel kernel,
                           cl_device_id device
                          )
{
	cl_int err;
	size_t*   ker_wg_size;
	size_t*   ker_pref_wg_size_multiple;
	cl_ulong* ker_loc_mem_size;
	cl_ulong* ker_pri_mem_size;
	size_t*   ker_comp_wg_size;

	size_t sizeParam;

	// ----------------------------------------------------------------------------
	// Query Kernel work group size
	printf("\n-----------------------------------------------------------------------\n");
	err = clGetKernelWorkGroupInfo(kernel,device,CL_KERNEL_WORK_GROUP_SIZE,0,NULL,&sizeParam);
	if (err != CL_SUCCESS){
		printf("Error: clGetKernelWorkGroupInfo() %d\n",err);
		fflush(stdout);
	 	return EXIT_FAILURE;
	}

	ker_wg_size = (size_t*) malloc(sizeof(size_t) * sizeParam);
	err = clGetKernelWorkGroupInfo(kernel,device,CL_KERNEL_WORK_GROUP_SIZE,sizeParam,ker_wg_size,NULL);
	if (err != CL_SUCCESS){
		printf("Error: clGetKernelWorkGroupInfo() %d\n",err);
		fflush(stdout);
	 	return EXIT_FAILURE;
	}

	printf("  %-45s: %lu \n", "CL_KERNEL_WORK_GROUP_SIZE", *ker_wg_size);
	free(ker_wg_size);

/*
	// CL_KERNEL_PREFERRED_WORK_GROUP_SIZE_MULTIPLE is supported from OpenCL 2.0
	// ----------------------------------------------------------------------------
	// Query Kernel preferred work group size multiple
	err = clGetKernelWorkGroupInfo(kernel,device,CL_KERNEL_PREFERRED_WORK_GROUP_SIZE_MULTIPLE,0,NULL,&sizeParam);
	if (err != CL_SUCCESS){printf("Error: clGetKernelWorkGroupInfo() %d\n",err); return EXIT_FAILURE;}

	ker_pref_wg_size_multiple = (size_t*) malloc(sizeof(size_t) * sizeParam);
	err = clGetKernelWorkGroupInfo(kernel,device,CL_KERNEL_PREFERRED_WORK_GROUP_SIZE_MULTIPLE,sizeParam,ker_pref_wg_size_multiple,NULL);
	if (err != CL_SUCCESS){printf("Error: clGetKernelWorkGroupInfo() %d\n",err); return EXIT_FAILURE;}

	printf("  %-45s: %lu \n", "CL_KERNEL_PREFERRED_WORK_GROUP_SIZE_MULTIPLE", ker_pref_wg_size_multiple);  
	free(ker_pref_wg_size_multiple);
*/

	// ----------------------------------------------------------------------------
	// Query Kernel local mem size
	err = clGetKernelWorkGroupInfo(kernel,device,CL_KERNEL_LOCAL_MEM_SIZE,0,NULL,&sizeParam);
	if (err != CL_SUCCESS){
		printf("Error: clGetKernelWorkGroupInfo() %d\n",err);
		fflush(stdout);
		return EXIT_FAILURE;
	}