diff options
Diffstat (limited to 'src/device_info.c')
| -rw-r--r-- | src/device_info.c | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/src/device_info.c b/src/device_info.c new file mode 100644 index 0000000..28eb89b --- /dev/null +++ b/src/device_info.c @@ -0,0 +1,131 @@ +//------------------------------------------------------------------------------ +// +// Name: device_info() +// +// Purpose: Function to output key parameters about the input OpenCL device. +// License: public domain +// +// +// RETURN: The OCL_SUCESS or the error code from one of the OCL function +// calls internal to this function +// +// HISTORY: Written by Tim Mattson, June 2010 +// +//------------------------------------------------------------------------------ +#include <cctk.h> +#include <cctk_Arguments.h> +#include <cctk_Parameters.h> + +#include <stdlib.h> +#include <string.h> +#ifdef APPLE +#include <OpenCL/opencl.h> +#else +#include "CL/cl.h" +#endif + +// define VERBOSE if you want to print info about work groups sizes +//#define VERBOSE 1 +#ifdef VERBOSE + extern char *OpenCL_err_code(cl_int); +#endif + +#define OpenCL_VWarn(...) CCTK_VWarn(opencl_error_code, __LINE__, __FILE__, CCTK_THORNSTRING, __VA_ARGS__) +#define OpenCL_VInfo(...) CCTK_VInfo(CCTK_THORNSTRING, __VA_ARGS__) + +int output_device_info(cl_device_id device_id); +int output_device_info(cl_device_id device_id) +{ + int err; // error code returned from OpenCL calls + cl_device_type device_type; // Parameter defining the type of the compute device + cl_uint comp_units; // the max number of compute units on a device + cl_char vendor_name[1024] = {0}; // string to hold vendor name for compute device + cl_char device_name[1024] = {0}; // string to hold name of compute device +#ifdef VERBOSE + cl_uint max_work_itm_dims; + size_t max_wrkgrp_size; +#endif + + CCTK_INT opencl_error_code = 0; + + err = clGetDeviceInfo(device_id, CL_DEVICE_NAME, sizeof(device_name), &device_name, NULL); + if (err != CL_SUCCESS) + { + OpenCL_VWarn("Error: Failed to access device name!"); + return EXIT_FAILURE; + } + OpenCL_VInfo(" Device: %s", device_name); + + err = clGetDeviceInfo(device_id, CL_DEVICE_TYPE, sizeof(device_type), &device_type, NULL); + if (err != CL_SUCCESS) + { + OpenCL_VWarn("Error: Failed to access device type information!"); + return EXIT_FAILURE; + } + if(device_type == CL_DEVICE_TYPE_GPU) + OpenCL_VInfo(" GPU from "); + + else if (device_type == CL_DEVICE_TYPE_CPU) + OpenCL_VInfo(" CPU from "); + + else + OpenCL_VInfo(" non CPU or GPU processor from "); + + err = clGetDeviceInfo(device_id, CL_DEVICE_VENDOR, sizeof(vendor_name), &vendor_name, NULL); + if (err != CL_SUCCESS) + { + OpenCL_VWarn("Error: Failed to access device vendor name!"); + return EXIT_FAILURE; + } + OpenCL_VInfo(" %s", vendor_name); + + err = clGetDeviceInfo(device_id, CL_DEVICE_MAX_COMPUTE_UNITS, sizeof(cl_uint), &comp_units, NULL); + if (err != CL_SUCCESS) + { + OpenCL_VWarn("Error: Failed to access device number of compute units !"); + return EXIT_FAILURE; + } + OpenCL_VInfo(" with a max of %d compute units",comp_units); + +#ifdef VERBOSE +// +// Optionally print information about work group sizes +// + err = clGetDeviceInfo( device_id, CL_DEVICE_MAX_WORK_ITEM_DIMENSIONS, sizeof(cl_uint), + &max_work_itm_dims, NULL); + if (err != CL_SUCCESS) + { + OpenCL_VWarn("Error: Failed to get device Info (CL_DEVICE_MAX_WORK_ITEM_DIMENSIONS)!", + OpenCL_err_code(err)); + return EXIT_FAILURE; + } + + size_t max_loc_size[max_work_itm_dims]; + err = clGetDeviceInfo( device_id, CL_DEVICE_MAX_WORK_ITEM_SIZES, max_work_itm_dims* sizeof(size_t), + max_loc_size, NULL); + if (err != CL_SUCCESS) + { + OpenCL_VWarn("Error: Failed to get device Info (CL_DEVICE_MAX_WORK_ITEM_SIZES)!",OpenCL_err_code(err)); + return EXIT_FAILURE; + } + err = clGetDeviceInfo( device_id, CL_DEVICE_MAX_WORK_GROUP_SIZE, sizeof(size_t), + &max_wrkgrp_size, NULL); + if (err != CL_SUCCESS) + { + OpenCL_VWarn("Error: Failed to get device Info (CL_DEVICE_MAX_WORK_GROUP_SIZE)!",OpenCL_err_code(err)); + return EXIT_FAILURE; + } + OpenCL_VInfo("work group, work item information"); + OpenCL_VInfo("\n max loc dim "); + for(int i=0; i< max_work_itm_dims; i++) + OpenCL_VInfo(" %d ",(int)(*(max_loc_size+i))); + OpenCL_VInfo("\n"); + OpenCL_VInfo(" Max work group size = %d\n",(int)max_wrkgrp_size); + +#endif + + return CL_SUCCESS; + +} + + |