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[diderot] Annotation of /trunk/src/lib/cl-target/clinfo.c
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Annotation of /trunk/src/lib/cl-target/clinfo.c

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1 : jhr 1671 /*! \file clinfo.c
2 :     *
3 :     * \author John Reppy
4 :     *
5 :     * \brief This file contains functions that can be used to determine properties of the
6 :     * host machine's OpenCL support.
7 :     */
8 :    
9 :     /*
10 : jhr 3349 * This code is part of the Diderot Project (http://diderot-language.cs.uchicago.edu)
11 :     *
12 :     * COPYRIGHT (c) 2015 The University of Chicago
13 : jhr 1671 * All rights reserved.
14 :     */
15 :    
16 :     #include "clinfo.h"
17 :     #include <stdio.h>
18 :     #include <string.h>
19 :     #include <stdlib.h>
20 :    
21 :     #define MAX_PLATFORMS 16
22 :    
23 :     static bool GetDevices (PlatformInfo_t *plat);
24 :    
25 :     #define CHECK(call) do { \
26 :     cl_int __sts = call; \
27 :     if (__sts != CL_SUCCESS) { \
28 :     fprintf(stderr, "error %d at %s:%d\n", __sts, __FILE__, __LINE__); \
29 :     exit (1); \
30 :     } \
31 :     } while (0)
32 :    
33 :    
34 :     CLInfo_t *GetCLInfo ()
35 :     {
36 :     cl_platform_id platformIDs[MAX_PLATFORMS];
37 :     char buf[512];
38 :    
39 :     // get platform info
40 :     // get number of OpenCL platforms
41 :     cl_uint numPlatforms;
42 :     CHECK(clGetPlatformIDs (MAX_PLATFORMS, platformIDs, &numPlatforms));
43 :    
44 :     PlatformInfo_t *plats = NEWVEC(PlatformInfo_t, numPlatforms);
45 :     for (int i = 0; i < numPlatforms; i++) {
46 :     clGetPlatformInfo (platformIDs[i], CL_PLATFORM_NAME, sizeof(buf), buf, 0);
47 :     plats[i].name = NEWSTR(buf);
48 :     plats[i].id = platformIDs[i];
49 :     // get OpenCL version info
50 :     clGetPlatformInfo (platformIDs[i], CL_PLATFORM_VERSION, sizeof(buf), buf, 0);
51 :     // FIXME: parser version info
52 :     // get extension info
53 :     // FIXME: TODO
54 :     // get device info
55 :     if (! GetDevices (&(plats[i]))) {
56 :     // free storage
57 :     for (int j = 0; j <= i; j++) {
58 :     free (plats[i].name);
59 :     }
60 :     free (plats);
61 :     }
62 :     }
63 :    
64 :     CLInfo_t *info = NEW(CLInfo_t);
65 :     info->numPlatforms = numPlatforms;
66 :     info->platforms = plats;
67 :    
68 :     return info;
69 :    
70 :     }
71 :    
72 :     static char *GetStringInfo (cl_device_id dev, cl_device_info param)
73 :     {
74 :     char buf[1024];
75 :     CHECK(clGetDeviceInfo (dev, param, sizeof(buf), buf, 0));
76 :     return NEWSTR(buf);
77 :     }
78 :    
79 :     static bool GetDevices (PlatformInfo_t *plat)
80 :     {
81 :     cl_uint numDevs;
82 :     char buf[512];
83 :    
84 :     // get number of devices for the platform
85 :     clGetDeviceIDs (plat->id, CL_DEVICE_TYPE_ALL, 0, 0, &numDevs);
86 :    
87 :     if (numDevs == 0) {
88 :     plat->numDevices = 0;
89 :     plat->devices = 0;
90 :     return false;
91 :     }
92 :    
93 :     plat->numDevices = numDevs;
94 :     plat->devices = NEWVEC(DeviceInfo_t, numDevs);
95 :    
96 :     cl_device_id *devices = NEWVEC(cl_device_id, numDevs);
97 :     CHECK(clGetDeviceIDs (plat->id, CL_DEVICE_TYPE_ALL, numDevs, devices, 0));
98 :    
99 :     for (int i = 0; i < numDevs; i++) {
100 :     DeviceInfo_t *dev = &(plat->devices[i]);
101 :     dev->name = GetStringInfo(devices[i], CL_DEVICE_NAME);
102 :     dev->vendor = GetStringInfo(devices[i], CL_DEVICE_VENDOR);
103 :     dev->id = devices[i];
104 :     CHECK(clGetDeviceInfo (
105 :     devices[i], CL_DEVICE_VERSION, sizeof(buf), buf, 0));
106 :     if (sscanf (buf, "OpenCL %d.%d", &(dev->majorVersion), &(dev->minorVersion)) != 2) {
107 :     fprintf(stderr, "error scanning version string: \"%s\"\n", buf);
108 :     exit (1);
109 :     }
110 :     CHECK(clGetDeviceInfo (
111 : lamonts 2060 devices[i], CL_DEVICE_VENDOR_ID, sizeof(cl_uint), &(dev->vendorId), 0));
112 :     CHECK(clGetDeviceInfo (
113 : jhr 1671 devices[i], CL_DEVICE_TYPE, sizeof(cl_device_type), &(dev->ty), 0));
114 :     CHECK(clGetDeviceInfo (
115 :     devices[i], CL_DEVICE_AVAILABLE, sizeof(cl_bool), &(dev->isAvail), 0));
116 :     CHECK(clGetDeviceInfo (
117 :     devices[i], CL_DEVICE_ADDRESS_BITS, sizeof(cl_uint), &(dev->addrBits), 0));
118 :     CHECK(clGetDeviceInfo (
119 :     devices[i], CL_DEVICE_ENDIAN_LITTLE, sizeof(cl_bool), &(dev->littleEndian), 0));
120 :     CHECK(clGetDeviceInfo (
121 :     devices[i], CL_DEVICE_MAX_COMPUTE_UNITS, sizeof(cl_uint), &(dev->numCUs), 0));
122 :     CHECK(clGetDeviceInfo (
123 :     devices[i], CL_DEVICE_MAX_CONSTANT_ARGS, sizeof(cl_uint), &(dev->maxConstArgs), 0));
124 :     CHECK(clGetDeviceInfo (
125 :     devices[i], CL_DEVICE_MAX_WORK_ITEM_DIMENSIONS, sizeof(cl_uint), &(dev->maxWIDims), 0));
126 :     CHECK(clGetDeviceInfo (
127 :     devices[i], CL_DEVICE_MAX_WORK_GROUP_SIZE, sizeof(size_t), &(dev->maxWGSize), 0));
128 :     size_t szb = sizeof(size_t) * dev->maxWIDims;
129 :     dev->maxWISize = (size_t *) CheckedAlloc (szb);
130 :     CHECK(clGetDeviceInfo (devices[i], CL_DEVICE_MAX_WORK_ITEM_SIZES, szb, dev->maxWISize, 0));
131 :     CHECK(clGetDeviceInfo (
132 :     devices[i], CL_DEVICE_GLOBAL_MEM_SIZE, sizeof(cl_ulong), &(dev->globalMemSzb), 0));
133 :     CHECK(clGetDeviceInfo (
134 :     devices[i], CL_DEVICE_LOCAL_MEM_SIZE, sizeof(cl_ulong), &(dev->localMemSzb), 0));
135 :     CHECK(clGetDeviceInfo (
136 :     devices[i], CL_DEVICE_MAX_PARAMETER_SIZE, sizeof(size_t), &(dev->maxParamSzb), 0));
137 :     CHECK(clGetDeviceInfo (
138 :     devices[i], CL_DEVICE_MAX_CONSTANT_BUFFER_SIZE, sizeof(cl_ulong), &(dev->maxConstBufSzb), 0));
139 :     CHECK(clGetDeviceInfo (
140 :     devices[i], CL_DEVICE_MAX_MEM_ALLOC_SIZE, sizeof(cl_ulong), &(dev->maxAllocSzb), 0));
141 :     cl_bool imagesSupported;
142 :     CHECK(clGetDeviceInfo (
143 :     devices[i], CL_DEVICE_IMAGE_SUPPORT, sizeof(cl_bool), &imagesSupported, 0));
144 :     if (imagesSupported) {
145 :     CHECK(clGetDeviceInfo (
146 :     devices[i], CL_DEVICE_IMAGE2D_MAX_WIDTH, sizeof(size_t), &(dev->maxImg2D[0]), 0));
147 :     CHECK(clGetDeviceInfo (
148 :     devices[i], CL_DEVICE_IMAGE3D_MAX_DEPTH, sizeof(size_t), &(dev->maxImg2D[1]), 0));
149 :     CHECK(clGetDeviceInfo (
150 :     devices[i], CL_DEVICE_IMAGE3D_MAX_WIDTH, sizeof(size_t), &(dev->maxImg3D[0]), 0));
151 :     CHECK(clGetDeviceInfo (
152 :     devices[i], CL_DEVICE_IMAGE3D_MAX_HEIGHT, sizeof(size_t), &(dev->maxImg3D[1]), 0));
153 :     CHECK(clGetDeviceInfo (
154 :     devices[i], CL_DEVICE_IMAGE3D_MAX_DEPTH, sizeof(size_t), &(dev->maxImg3D[2]), 0));
155 :     }
156 :     else {
157 :     dev->maxImg2D[0] = dev->maxImg2D[1] = 0;
158 :     dev->maxImg3D[0] = dev->maxImg3D[1] = dev->maxImg3D[2] = 0;
159 :     }
160 :     CHECK(clGetDeviceInfo (
161 :     devices[i], CL_DEVICE_PREFERRED_VECTOR_WIDTH_CHAR, sizeof(cl_uint), &(dev->charWid), 0));
162 :     CHECK(clGetDeviceInfo (
163 :     devices[i], CL_DEVICE_PREFERRED_VECTOR_WIDTH_CHAR, sizeof(cl_uint), &(dev->shortWid), 0));
164 :     CHECK(clGetDeviceInfo (
165 :     devices[i], CL_DEVICE_PREFERRED_VECTOR_WIDTH_CHAR, sizeof(cl_uint), &(dev->intWid), 0));
166 :     CHECK(clGetDeviceInfo (
167 :     devices[i], CL_DEVICE_PREFERRED_VECTOR_WIDTH_CHAR, sizeof(cl_uint), &(dev->longWid), 0));
168 :     CHECK(clGetDeviceInfo (
169 :     devices[i], CL_DEVICE_PREFERRED_VECTOR_WIDTH_CHAR, sizeof(cl_uint), &(dev->floatWid), 0));
170 :     CHECK(clGetDeviceInfo (
171 :     devices[i], CL_DEVICE_PREFERRED_VECTOR_WIDTH_CHAR, sizeof(cl_uint), &(dev->doubleWid), 0));
172 :     // determine the compute-unit width
173 : lamonts 2060
174 : jhr 1671 if (isCPUDevice(dev))
175 :     dev->cuWidth = 1;
176 :     else if (isGPUDevice(dev))
177 : lamonts 2060 if (dev->vendorId == AMD_VENDOR_ID)
178 : jhr 1671 dev->cuWidth = 64; // an AMD wavefront is 64-wide
179 : lamonts 2060 else if (dev->vendorId == NVIDIA_VENDOR_ID)
180 : jhr 1671 dev->cuWidth = 32; // an NVIDIA warp is 32-wide
181 :     else
182 :     dev->cuWidth = 32; // FIXME: not sure what this should be?
183 :     else
184 :     dev->cuWidth = 1; // FIXME: not sure what this should be?
185 :    
186 :     }
187 :    
188 :     free(devices);
189 :    
190 :     return true;
191 :     }
192 :    
193 :     void PrintCLInfo (FILE *outS, CLInfo_t *clinfo)
194 :     {
195 :     if (clinfo->numPlatforms == 0) {
196 :     fprintf(outS, "No OpenCL platforms\n");
197 :     return;
198 :     }
199 :    
200 :     fprintf(outS, "OpenCL profile:\n");
201 :     for (int i = 0; i < clinfo->numPlatforms; i++) {
202 :     PlatformInfo_t *plat = &(clinfo->platforms[i]);
203 :     fprintf (outS, " Platform %d (%s)\n", i, plat->name);
204 :     for (int j = 0; j < plat->numDevices; j++) {
205 :     DeviceInfo_t *dev = &(plat->devices[j]);
206 :     if (dev->isAvail)
207 :     fprintf (outS, " Device %d.%d (%s):\n", i, j, dev->name);
208 :     else
209 :     fprintf (outS, " Device %d.%d (%s): **UNAVAILABLE**\n", i, j, dev->name);
210 :     fprintf (outS, " Vendor: %s\n", dev->vendor);
211 : lamonts 2060 fprintf (outS, " Vendor Id: %d\n", dev->vendorId);
212 : jhr 1671 fprintf (outS, " OpenCL version: %d.%d\n",
213 :     dev->majorVersion, dev->minorVersion);
214 :     fprintf (outS, " Type: ");
215 :     if (isCPUDevice(dev)) fprintf (outS, " CPU");
216 :     if (isGPUDevice(dev)) fprintf (outS, " GPU");
217 :     if (dev->ty & CL_DEVICE_TYPE_ACCELERATOR) fprintf (outS, " ACCELERATOR");
218 :     if (dev->ty & CL_DEVICE_TYPE_DEFAULT) fprintf (outS, " DEFAULT");
219 :     fprintf (outS, "\n");
220 :     fprintf (outS, " Address size: %d\n", dev->addrBits);
221 :     fprintf (outS, " Endianess: %s\n", dev->littleEndian ? "LITTLE" : "BIG");
222 :     fprintf (outS, " Num. compute units: %d", dev->numCUs);
223 :     if (dev->cuWidth > 1)
224 :     fprintf (outS, " * %d\n", dev->cuWidth);
225 :     else
226 :     fprintf (outS, "\n");
227 :     fprintf (outS, " Max. dimensions: %d\n", dev->maxWIDims);
228 :     fprintf (outS, " Max. work group size: %ld\n", (long)(dev->maxWGSize));
229 :     fprintf (outS, " Max. work items: ");
230 :     for (int k = 0; k < dev->maxWIDims; k++)
231 :     fprintf (outS, "%s%ld", (k > 0) ? " x " : "", (long)(dev->maxWISize[k]));
232 :     fprintf (outS, "\n");
233 :     fprintf (outS, " Global memory size: %ld\n", (long)(dev->globalMemSzb));
234 :     fprintf (outS, " Local memory size: %ld\n", (long)(dev->localMemSzb));
235 :     fprintf (outS, " Max. parameter size: %ld\n", (long)(dev->maxParamSzb));
236 :     fprintf (outS, " Max. allocation size: %ld\n", (long)(dev->maxAllocSzb));
237 :     fprintf (outS, " Max. const. buffer size: %ld\n", (long)(dev->maxConstBufSzb));
238 :     fprintf (outS, " Max. const. arguments: %d\n", dev->maxConstArgs);
239 :     fprintf (outS, " Max. 2D image size: %ld x %ld\n",
240 :     (long)(dev->maxImg2D[0]), (long)(dev->maxImg2D[1]));
241 :     fprintf (outS, " Max. 3D image size: %ld x %ld x %ld\n",
242 :     (long)(dev->maxImg3D[0]), (long)(dev->maxImg3D[1]), (long)(dev->maxImg3D[2]));
243 :     fprintf (outS, " Prefered vector width: char%d, short%d, int%d, long%d\n",
244 :     dev->charWid, dev->shortWid, dev->intWid, dev->longWid);
245 :     fprintf (outS, " float%d", dev->floatWid);
246 :     if (dev->doubleWid > 0)
247 :     fprintf (outS, ", double%d\n", dev->doubleWid);
248 :     else
249 :     fprintf (outS, "\n");
250 :     }
251 :     }
252 :    
253 :     }

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