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1 :	jhr	2737	/*! \file clinfo.h
2 :			*
3 :			* \author John Reppy
4 :			*/
5 :
6 :			/*
7 :	jhr	3349	* This code is part of the Diderot Project (http://diderot-language.cs.uchicago.edu)
8 :			*
9 :			* COPYRIGHT (c) 2015 The University of Chicago
10 :	jhr	2737	* All rights reserved.
11 :			*/
12 :
13 :			#ifndef _CLINFO_H_
14 :			#define _CLINFO_H_
15 :
16 :			#include "Diderot/config.h"
17 :			# ifdef HAVE_CL_CL_H
18 :			# include <CL/cl.h>
19 :			# elif defined(HAVE_OPENCL_CL_H)
20 :			# include <OpenCL/cl.h>
21 :			# else
22 :			# error no cl.h
23 :			# endif
24 :			#include <stdio.h>
25 :			#include <stdbool.h>
26 :
27 :			typedef struct {
28 :			unsigned short index[2]; //!< the platform/device index of the device
29 :			char *name; //!< name of device
30 :			char *vendor; //!< device vendor
31 :			int majorVersion; //!< major OpenCL version number supported by the device
32 :			int minorVersion; //!< minor OpenCL version number supported by the device
33 :			cl_device_id id; //!< the device ID
34 :			cl_device_type ty; //!< the type of the device
35 :			cl_bool isAvail; //!< true, if the device is available
36 :			cl_uint addrBits; //!< number of address bits on device (32 or 64)
37 :			cl_bool littleEndian; //!< true if device is little endian
38 :			cl_uint numCUs; //!< number of compute units
39 :			cl_uint cuWidth; //!< width of a compute unit; this value is determined
40 :			//! by looking at the device type and vendor string.
41 :			cl_uint maxConstArgs; //!< maximum number of __constant arguments
42 :			cl_uint maxWIDims; //!< maximum number of work item dimensions
43 :			size_t maxWGSize; //!< maximum workgroup size
44 :			size_t *maxWISize; //!< maximum number of work items in each dimension
45 :			cl_ulong globalMemSzb; //!< the size of the device's global memory
46 :			cl_ulong localMemSzb; //!< the size of the device's local memory
47 :			size_t maxParamSzb; //!< the maximum size in bytes of the kernel arguments
48 :			cl_ulong maxConstBufSzb; //!< maximum size of a constant buffer
49 :			cl_ulong maxAllocSzb; //!< maximum allocation size in bytes
50 :			size_t maxImg2D[2]; //!< maximum width and height of 2D images
51 :			size_t maxImg3D[3]; //!< maximim width, height, and depthe of 3D images
52 :			// prefered vector widths by type:
53 :			cl_uint charWid; //!< prefered width of char vectors
54 :			cl_uint shortWid; //!< prefered width of short vectors
55 :			cl_uint intWid; //!< prefered width of int vectors
56 :			cl_uint longWid; //!< prefered width of long vectors
57 :			cl_uint floatWid; //!< prefered width of float vectors
58 :			cl_uint doubleWid; //!< prefered width of double vectors
59 :			//! (0 if doubles are not supported)
60 :			} DeviceInfo_t;
61 :
62 :			typedef struct {
63 :			char *name; //!< name of platform
64 :			cl_platform_id id; //! the platform ID
65 :			int numDevices; //!< number of devices supported by platform
66 :			DeviceInfo_t *devices; //!< array of devices
67 :			} PlatformInfo_t;
68 :
69 :			typedef struct {
70 :			int numPlatforms; //!< number of platforms supported by system
71 :			PlatformInfo_t *platforms; //!< array of supported platforms.
72 :			} CLInfo_t;
73 :
74 :			/*! \brief return information about the OpenCL support of the system.
75 :			* \return pointer to a CLInfo_t structure or 0 if there is an error.
76 :			*/
77 :			CLInfo_t *Diderot_GetCLInfo ();
78 :
79 :			/*! \brief return the device with the given index.
80 :			*/
81 :			DeviceInfo_t *Diderot_GetDeviceByIndex (CLInfo_t *clinfo, unsigned int platIdx, unsigned int devIdx);
82 :
83 :			/*! \brief return the default device for the system.
84 :			*/
85 :			DeviceInfo_t *Diderot_DefaultCLDevice (CLInfo_t *clinfo);
86 :
87 :			/*! \brief print the CL profile information to an output stream.
88 :			*/
89 :			void Diderot_PrintCLInfo (FILE *outS, CLInfo_t *clinfo);
90 :
91 :			/*! \brief check to see if a device is a GPU */
92 :			STATIC_INLINE bool isGPUDevice (DeviceInfo_t *dev)
93 :			{
94 :			return ((dev->ty & CL_DEVICE_TYPE_GPU) != 0);
95 :			}
96 :
97 :			/*! \brief check to see if a device is a CPU */
98 :			STATIC_INLINE bool isCPUDevice (DeviceInfo_t *dev)
99 :			{
100 :			return ((dev->ty & CL_DEVICE_TYPE_CPU) != 0);
101 :			}
102 :
103 :			#endif /* !_CLINFO_H_ */

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