tidl_api/src/ocl_device.cpp

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  28
  29
  30 #include <cstdlib>
  31 #include <cassert>
  32 using std::size_t;
  33
  34 #include <iostream>
  35
  36 #include "ocl_device.h"
  37 #include "ocl_util.h"
  38 #include "trace.h"
  39 #include "../dsp/ocl_wrapper.dsp_h"
  40
  41 using namespace tidl;
  42
  43 static const char* error2string(cl_int err);
  44 static void        errorCheck(cl_int ret, int line);
  45
  46 Device::Device(cl_device_type t, const DeviceIds& ids):
  47                 device_type_m(t), device_ids_m(ids)
  48 {
  49     TRACE::print("\tOCL Device: %s created\n",
  50               device_type_m == CL_DEVICE_TYPE_ACCELERATOR ? "DSP" :
  51               device_type_m == CL_DEVICE_TYPE_CUSTOM ? "EVE" : "Unknown");
  52
  53     for (int i = 0; i < MAX_DEVICES; i++)
  54         queue_m[i] = nullptr;
  55
  56 }
  57
  58 DspDevice::DspDevice(const DeviceIds& ids, const std::string &binary_filename):
  59               Device(CL_DEVICE_TYPE_ACCELERATOR, ids)
  60 {
  61     cl_uint num_devices_found;
  62     cl_device_id device_ids[MAX_DEVICES];
  63
  64     cl_int errcode = clGetDeviceIDs(0,               // platform
  65                              device_type_m,          // device_type
  66                              MAX_DEVICES,            // num_entries
  67                              device_ids,             // devices
  68                              &num_devices_found);    // num_devices
  69     errorCheck(errcode, __LINE__);
  70
  71     if (num_devices_found != 1)
  72         throw Exception("OpenCL DSP device not found",
  73                         __FILE__, __FUNCTION__, __LINE__);
  74
  75     cl_int num_compute_units;
  76     errcode = clGetDeviceInfo(device_ids[0],
  77                               CL_DEVICE_MAX_COMPUTE_UNITS,
  78                               sizeof(num_compute_units),
  79                               &num_compute_units,
  80                               nullptr);
  81
  82     if (num_compute_units == 1)
  83     {
  84         context_m = clCreateContextFromType(0,              // properties
  85                                             device_type_m,  // device_type
  86                                             0,              // pfn_notify
  87                                             0,              // user_data
  88                                             &errcode);
  89         errorCheck(errcode, __LINE__);
  90
  91         // Queue 0 on device 0
  92         queue_m[0] = clCreateCommandQueue(context_m,
  93                                           device_ids[0],
  94                                           CL_QUEUE_PROFILING_ENABLE,
  95                                           &errcode);
  96         errorCheck(errcode, __LINE__);
  97         BuildProgramFromBinary(binary_filename, device_ids, 1);
  98     }
  99     else
 100     {
 101         const cl_uint NUM_SUB_DEVICES = 2;
 102
 103         // Create 2 sub-device's, each consisting of a C66x DSP
 104         cl_device_partition_property properties[3] =
 105                                         { CL_DEVICE_PARTITION_EQUALLY, 1, 0 };
 106
 107         // Query the number of sub-devices that can be created
 108         cl_uint n_sub_devices = 0;
 109         errcode = clCreateSubDevices(device_ids[0],      // in_device
 110                                      properties,         // properties
 111                                      0,                  // num_devices
 112                                      NULL,               // out_devices
 113                                      &n_sub_devices);    // num_devices_ret
 114         errorCheck(errcode, __LINE__);
 115
 116         assert(n_sub_devices == NUM_SUB_DEVICES);
 117
 118         // Create the sub-devices
 119         cl_device_id sub_devices[NUM_SUB_DEVICES] = {0, 0};
 120         errcode = clCreateSubDevices(device_ids[0],        // in_device
 121                                      properties,           // properties
 122                                      n_sub_devices,        // num_devices
 123                                      sub_devices,          // out_devices
 124                                      nullptr);             // num_devices_ret
 125         errorCheck(errcode, __LINE__);
 126
 127         // Create a context containing the sub-devices
 128         context_m = clCreateContext(NULL,               // properties
 129                                     NUM_SUB_DEVICES,    // num_devices
 130                                     sub_devices,        // devices
 131                                     NULL,               // pfn_notify
 132                                     NULL,               // user_data
 133                                     &errcode);          // errcode_ret
 134         errorCheck(errcode, __LINE__);
 135
 136         // Create queues to each sub-device
 137         for (auto id : device_ids_m)
 138         {
 139             int index = static_cast<int>(id);
 140             queue_m[index] = clCreateCommandQueue(context_m,
 141                                           sub_devices[index],
 142                                           CL_QUEUE_PROFILING_ENABLE,
 143                                           &errcode);
 144             errorCheck(errcode, __LINE__);
 145         }
 146
 147         BuildProgramFromBinary(binary_filename, sub_devices, NUM_SUB_DEVICES);
 148     }
 149
 150     errcode = clGetDeviceInfo(device_ids[0],
 151                                 CL_DEVICE_MAX_CLOCK_FREQUENCY,
 152                                 sizeof(freq_in_mhz_m),
 153                                 &freq_in_mhz_m,
 154                                 nullptr);
 155     errorCheck(errcode, __LINE__);
 156 }
 157
 158
 159 EveDevice::EveDevice(const DeviceIds& ids, const std::string &kernel_names):
 160             Device(CL_DEVICE_TYPE_CUSTOM, ids)
 161 {
 162     cl_uint num_devices_found;
 163     cl_device_id all_device_ids[MAX_DEVICES];
 164
 165     // Find all the OpenCL devices available of the given type
 166     cl_int errcode = clGetDeviceIDs(0,              // platform
 167                              device_type_m,         // device_type
 168                              MAX_DEVICES,           // num_entries
 169                              all_device_ids,        // devices
 170                              &num_devices_found);   // num_devices
 171     errorCheck(errcode, __LINE__);
 172
 173     assert (num_devices_found >= device_ids_m.size());
 174
 175     context_m = clCreateContextFromType(0,              // properties
 176                                         device_type_m,  // device_type
 177                                         0,              // pfn_notify
 178                                         0,              // user_data
 179                                         &errcode);
 180     errorCheck(errcode, __LINE__);
 181
 182
 183     // Create command queues to OpenCL devices specified by the
 184     // device_ids_m set.
 185     for (auto id : device_ids_m)
 186     {
 187         int index = static_cast<int>(id);
 188         queue_m[index] = clCreateCommandQueue(context_m,
 189                                       all_device_ids[index],
 190                                       CL_QUEUE_PROFILING_ENABLE,
 191                                       &errcode);
 192         errorCheck(errcode, __LINE__);
 193     }
 194
 195     BuildProgramFromBinary(kernel_names, all_device_ids, device_ids_m.size());
 196
 197     errcode = clGetDeviceInfo(all_device_ids[0],
 198                                 CL_DEVICE_MAX_CLOCK_FREQUENCY,
 199                                 sizeof(freq_in_mhz_m),
 200                                 &freq_in_mhz_m,
 201                                 nullptr);
 202     errorCheck(errcode, __LINE__);
 203 }
 204
 205
 206 bool DspDevice::BuildProgramFromBinary(const std::string &BFN,
 207                                        cl_device_id device_ids[],
 208                                        int num_devices)
 209 {
 210     size_t bin_len = ocl_wrapper_dsp_bin_len;
 211
 212     assert (bin_len != 0);
 213
 214     // Casting to make ocl_read_binary work with clCreateProgramWithBinary
 215     const unsigned char *bin_arrc = reinterpret_cast <const unsigned char *>
 216                                     (ocl_wrapper_dsp_bin);
 217
 218     size_t lengths[num_devices];
 219     for (int i=0; i < num_devices; i++) lengths[i] = bin_len;
 220
 221     const unsigned char* binaries[num_devices];
 222     for (int i=0; i < num_devices; i++) binaries[i] = bin_arrc;
 223
 224     cl_int err;
 225     program_m = clCreateProgramWithBinary(context_m,
 226                                           num_devices,
 227                                           device_ids,          // device_list
 228                                           lengths,
 229                                           binaries,
 230                                           0,                   // binary_status
 231                                           &err);
 232     errorCheck(err, __LINE__);
 233
 234     const char *options = "";
 235     err = clBuildProgram(program_m, num_devices, device_ids, options, 0, 0);
 236     errorCheck(err, __LINE__);
 237
 238     return true;
 239 }
 240
 241 bool EveDevice::BuildProgramFromBinary(const std::string& kernel_names,
 242                                        cl_device_id device_ids[],
 243                                        int num_devices)
 244 {
 245     cl_int err;
 246     cl_device_id executor_device_ids[MAX_DEVICES];
 247
 248     int i = 0;
 249     for (auto id : device_ids_m)
 250         executor_device_ids[i++] = device_ids[static_cast<int>(id)];
 251
 252     program_m = clCreateProgramWithBuiltInKernels(context_m,
 253                                           num_devices,
 254                                           executor_device_ids,  // device_list
 255                                           kernel_names.c_str(),
 256                                           &err);
 257     errorCheck(err, __LINE__);
 258
 259     return true;
 260 }
 261
 262 Kernel::Kernel(Device* device, const std::string& name,
 263                const KernelArgs& args, uint8_t device_index):
 264            name_m(name), device_m(device), device_index_m(device_index),
 265            num_running_contexts_m(0)
 266 {
 267     TRACE::print("Creating kernel %s\n", name.c_str());
 268     cl_int err;
 269     kernel_m = clCreateKernel(device_m->program_m, name_m.c_str(), &err);
 270     errorCheck(err, __LINE__);
 271
 272     int arg_index = 0;
 273     for (const auto& arg : args)
 274     {
 275         if (!arg.isLocal())
 276         {
 277             if (arg.kind() == DeviceArgInfo::Kind::BUFFER)
 278             {
 279                 cl_mem buffer = device_m->CreateBuffer(arg);
 280
 281                 clSetKernelArg(kernel_m, arg_index, sizeof(cl_mem), &buffer);
 282                 TRACE::print("  Arg[%d]: %p\n", arg_index, buffer);
 283
 284                 if (buffer)
 285                     buffers_m.push_back(buffer);
 286             }
 287             else if (arg.kind() == DeviceArgInfo::Kind::SCALAR)
 288             {
 289                 clSetKernelArg(kernel_m, arg_index, arg.size(), arg.ptr());
 290                 TRACE::print("  Arg[%d]: %p\n", arg_index, arg.ptr());
 291             }
 292             else
 293             {
 294                 assert ("DeviceArgInfo kind not supported");
 295             }
 296         }
 297         else
 298         {
 299             clSetKernelArg(kernel_m, arg_index, arg.size(), NULL);
 300             TRACE::print("  Arg[%d]: local, %d\n", arg_index, arg.size());
 301         }
 302         arg_index++;
 303
 304     }
 305 }
 306
 307 bool Kernel::UpdateScalarArg(uint32_t index, size_t size, const void *value)
 308 {
 309     cl_int ret = clSetKernelArg(kernel_m, index, size, value);
 310     return ret == CL_SUCCESS;
 311 }
 312
 313 Kernel& Kernel::RunAsync(uint32_t context_idx)
 314 {
 315     // Execute kernel
 316     TRACE::print("\tKernel: device %d executing %s, context %d\n",
 317                  device_index_m, name_m.c_str(), context_idx);
 318     cl_int ret = clEnqueueTask(device_m->queue_m[device_index_m],
 319                                kernel_m, 0, 0, &event_m[context_idx]);
 320     errorCheck(ret, __LINE__);
 321     __sync_fetch_and_add(&num_running_contexts_m, 1);
 322
 323     return *this;
 324 }
 325
 326
 327 bool Kernel::Wait(float *host_elapsed_ms, uint32_t context_idx)
 328 {
 329     // Wait called without a corresponding RunAsync
 330     if (num_running_contexts_m == 0)
 331         return false;
 332
 333     TRACE::print("\tKernel: waiting context %d...\n", context_idx);
 334     cl_int ret = clWaitForEvents(1, &event_m[context_idx]);
 335     errorCheck(ret, __LINE__);
 336
 337     if (host_elapsed_ms != nullptr)
 338     {
 339         cl_ulong t_que, t_end;
 340         clGetEventProfilingInfo(event_m[context_idx],
 341                                 CL_PROFILING_COMMAND_QUEUED,
 342                                 sizeof(cl_ulong), &t_que, nullptr);
 343         clGetEventProfilingInfo(event_m[context_idx], CL_PROFILING_COMMAND_END,
 344                                 sizeof(cl_ulong), &t_end, nullptr);
 345         *host_elapsed_ms = (t_end - t_que) / 1.0e6;  // nano to milli seconds
 346     }
 347
 348     ret = clReleaseEvent(event_m[context_idx]);
 349     errorCheck(ret, __LINE__);
 350     TRACE::print("\tKernel: finished execution\n");
 351
 352     __sync_fetch_and_sub(&num_running_contexts_m, 1);
 353     return true;
 354 }
 355
 356 extern void CallbackWrapper(void *user_data) __attribute__((weak));
 357
 358 static
 359 void EventCallback(cl_event event, cl_int exec_status, void *user_data)
 360 {
 361     if (exec_status != CL_SUCCESS || user_data == nullptr)  return;
 362     if (CallbackWrapper)  CallbackWrapper(user_data);
 363 }
 364
 365 bool Kernel::AddCallback(void *user_data, uint32_t context_idx)
 366 {
 367     if (num_running_contexts_m == 0)  return false;
 368     return clSetEventCallback(event_m[context_idx], CL_COMPLETE, EventCallback,
 369                               user_data) == CL_SUCCESS;
 370 }
 371
 372 Kernel::~Kernel()
 373 {
 374     for (auto b : buffers_m)
 375         device_m->ReleaseBuffer(b);
 376
 377     clReleaseKernel(kernel_m);
 378 }
 379
 380 cl_mem Device::CreateBuffer(const DeviceArgInfo &Arg)
 381 {
 382     size_t  size     = Arg.size();
 383     void   *host_ptr = Arg.ptr();
 384
 385     if (host_ptr == nullptr)
 386     {
 387         TRACE::print("\tOCL Create B:%p\n", nullptr);
 388         return nullptr;
 389     }
 390
 391     bool hostPtrInCMEM = __is_in_malloced_region(host_ptr);
 392
 393     // Conservative till we have sufficient information.
 394     cl_mem_flags flag = CL_MEM_READ_WRITE;
 395
 396     if (hostPtrInCMEM) flag |= (cl_mem_flags)CL_MEM_USE_HOST_PTR;
 397     else               flag |= (cl_mem_flags)CL_MEM_COPY_HOST_PTR;
 398
 399     cl_int       errcode;
 400     cl_mem buffer = clCreateBuffer(context_m,
 401                                    flag,
 402                                    size,
 403                                    host_ptr,
 404                                    &errcode);
 405     errorCheck(errcode, __LINE__);
 406
 407     TRACE::print("\tOCL Create B:%p\n", buffer);
 408
 409     return buffer;
 410 }
 411
 412 void Device::ReleaseBuffer(cl_mem M)
 413 {
 414     TRACE::print("\tOCL Release B:%p\n", M);
 415     clReleaseMemObject(M);
 416 }
 417
 418 /// Release resources associated with an OpenCL device
 419 Device::~Device()
 420 {
 421     TRACE::print("\tOCL Device: deleted\n");
 422     for (unsigned int i = 0; i < device_ids_m.size(); i++)
 423     {
 424         clFinish(queue_m[i]);
 425         clReleaseCommandQueue (queue_m[i]);
 426     }
 427
 428     clReleaseProgram      (program_m);
 429     clReleaseContext      (context_m);
 430 }
 431
 432 void errorCheck(cl_int ret, int line)
 433 {
 434     if (ret != CL_SUCCESS)
 435     {
 436         std::cerr << "ERROR: [ Line: " << line << "] " << error2string(ret) << std::endl;
 437         exit(ret);
 438     }
 439 }
 440
 441 /// Convert OpenCL error codes to a string
 442 const char* error2string(cl_int err)
 443 {
 444     switch(err)
 445     {
 446          case   0: return "CL_SUCCESS";
 447          case  -1: return "CL_DEVICE_NOT_FOUND";
 448          case  -2: return "CL_DEVICE_NOT_AVAILABLE";
 449          case  -3: return "CL_COMPILER_NOT_AVAILABLE";
 450          case  -4: return "CL_MEM_OBJECT_ALLOCATION_FAILURE";
 451          case  -5: return "CL_OUT_OF_RESOURCES";
 452          case  -6: return "CL_OUT_OF_HOST_MEMORY";
 453          case  -7: return "CL_PROFILING_INFO_NOT_AVAILABLE";
 454          case  -8: return "CL_MEM_COPY_OVERLAP";
 455          case  -9: return "CL_IMAGE_FORMAT_MISMATCH";
 456          case -10: return "CL_IMAGE_FORMAT_NOT_SUPPORTED";
 457          case -11: return "CL_BUILD_PROGRAM_FAILURE";
 458          case -12: return "CL_MAP_FAILURE";
 459
 460          case -30: return "CL_INVALID_VALUE";
 461          case -31: return "CL_INVALID_DEVICE_TYPE";
 462          case -32: return "CL_INVALID_PLATFORM";
 463          case -33: return "CL_INVALID_DEVICE";
 464          case -34: return "CL_INVALID_CONTEXT";
 465          case -35: return "CL_INVALID_QUEUE_PROPERTIES";
 466          case -36: return "CL_INVALID_COMMAND_QUEUE";
 467          case -37: return "CL_INVALID_HOST_PTR";
 468          case -38: return "CL_INVALID_MEM_OBJECT";
 469          case -39: return "CL_INVALID_IMAGE_FORMAT_DESCRIPTOR";
 470          case -40: return "CL_INVALID_IMAGE_SIZE";
 471          case -41: return "CL_INVALID_SAMPLER";
 472          case -42: return "CL_INVALID_BINARY";
 473          case -43: return "CL_INVALID_BUILD_OPTIONS";
 474          case -44: return "CL_INVALID_PROGRAM";
 475          case -45: return "CL_INVALID_PROGRAM_EXECUTABLE";
 476          case -46: return "CL_INVALID_KERNEL_NAME";
 477          case -47: return "CL_INVALID_KERNEL_DEFINITION";
 478          case -48: return "CL_INVALID_KERNEL";
 479          case -49: return "CL_INVALID_ARG_INDEX";
 480          case -50: return "CL_INVALID_ARG_VALUE";
 481          case -51: return "CL_INVALID_ARG_SIZE";
 482          case -52: return "CL_INVALID_KERNEL_ARGS";
 483          case -53: return "CL_INVALID_WORK_DIMENSION";
 484          case -54: return "CL_INVALID_WORK_GROUP_SIZE";
 485          case -55: return "CL_INVALID_WORK_ITEM_SIZE";
 486          case -56: return "CL_INVALID_GLOBAL_OFFSET";
 487          case -57: return "CL_INVALID_EVENT_WAIT_LIST";
 488          case -58: return "CL_INVALID_EVENT";
 489          case -59: return "CL_INVALID_OPERATION";
 490          case -60: return "CL_INVALID_GL_OBJECT";
 491          case -61: return "CL_INVALID_BUFFER_SIZE";
 492          case -62: return "CL_INVALID_MIP_LEVEL";
 493          case -63: return "CL_INVALID_GLOBAL_WORK_SIZE";
 494          default: return "Unknown OpenCL error";
 495     }
 496 }
 497
 498 Device::Ptr Device::Create(DeviceType core_type, const DeviceIds& ids,
 499                            const std::string& name)
 500 {
 501     Device::Ptr p(nullptr);
 502     if (core_type == DeviceType::DSP)
 503         p.reset(new DspDevice(ids, name));
 504     else if (core_type == DeviceType::EVE)
 505         p.reset(new EveDevice(ids, name));
 506
 507     return p;
 508 }
 509
 510 // Minimum version of OpenCL required for this version of TIDL API
 511 #define MIN_OCL_VERSION "01.01.16.00"
 512 static bool CheckOpenCLVersion(cl_platform_id id)
 513 {
 514     cl_int err;
 515     size_t length;
 516     err = clGetPlatformInfo(id, CL_PLATFORM_VERSION, 0, nullptr, &length);
 517     if (err != CL_SUCCESS) return false;
 518
 519     std::unique_ptr<char> version(new char[length]);
 520     err = clGetPlatformInfo(id, CL_PLATFORM_VERSION, length, version.get(),
 521                             nullptr);
 522     if (err != CL_SUCCESS) return false;
 523
 524     std::string v(version.get());
 525
 526     if (v.substr(v.find("01."), sizeof(MIN_OCL_VERSION)) >= MIN_OCL_VERSION)
 527         return true;
 528
 529     std::cerr << "TIDL API Error: OpenCL " << MIN_OCL_VERSION
 530               << " or higher required." << std::endl;
 531
 532     return false;
 533 }
 534
 535 static bool PlatformIsAM57()
 536 {
 537     cl_platform_id id;
 538     cl_int err;
 539
 540     err = clGetPlatformIDs(1, &id, nullptr);
 541     if (err != CL_SUCCESS) return false;
 542
 543     if (!CheckOpenCLVersion(id))
 544        return false;
 545
 546     // Check if the device name is AM57
 547     size_t length;
 548     err = clGetPlatformInfo(id, CL_PLATFORM_NAME, 0, nullptr, &length);
 549     if (err != CL_SUCCESS) return false;
 550
 551     std::unique_ptr<char> name(new char[length]);
 552
 553     err = clGetPlatformInfo(id, CL_PLATFORM_NAME, length, name.get(), nullptr);
 554     if (err != CL_SUCCESS) return false;
 555
 556     std::string platform_name(name.get());
 557
 558     if (platform_name.find("AM57") == std::string::npos)
 559         return false;
 560
 561     return true;
 562 }
 563
 564 // TI DL is supported on AM57x - EVE or C66x devices
 565 uint32_t Device::GetNumDevices(DeviceType device_type)
 566 {
 567     if (!PlatformIsAM57()) return 0;
 568
 569     // Convert DeviceType to OpenCL device type
 570     cl_device_type t = (device_type == DeviceType::EVE) ?
 571                                     CL_DEVICE_TYPE_CUSTOM :
 572                                     CL_DEVICE_TYPE_ACCELERATOR;
 573
 574     // Find all the OpenCL devices available
 575     cl_uint num_devices_found;
 576     cl_device_id all_device_ids[MAX_DEVICES];
 577
 578     cl_int errcode = clGetDeviceIDs(0,                   // platform
 579                                     t,                   // device_type
 580                                     MAX_DEVICES,         // num_entries
 581                                     all_device_ids,      // devices
 582                                     &num_devices_found); // num_devices
 583
 584
 585     if (errcode != CL_SUCCESS)            return 0;
 586     if (num_devices_found == 0)           return 0;
 587
 588     // DSP, return the number of compute units since we maintain a
 589     // queue to each compute unit (i.e. C66x DSP)
 590     if (t == CL_DEVICE_TYPE_ACCELERATOR)
 591     {
 592         cl_int num_compute_units;
 593         errcode = clGetDeviceInfo(all_device_ids[0],
 594                                 CL_DEVICE_MAX_COMPUTE_UNITS,
 595                                 sizeof(num_compute_units),
 596                                 &num_compute_units,
 597                                 nullptr);
 598         if (errcode != CL_SUCCESS)
 599             return 0;
 600
 601         return num_compute_units;
 602     }
 603
 604     // EVE, return the number of devices since each EVE is a device
 605     return num_devices_found;
 606 }