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hybrid_model_async_executor.cc 21 kB

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  1. /**
  2. * Copyright 2019-2020 Huawei Technologies Co., Ltd
  3. *
  4. * Licensed under the Apache License, Version 2.0 (the "License");
  5. * you may not use this file except in compliance with the License.
  6. * You may obtain a copy of the License at
  7. *
  8. * http://www.apache.org/licenses/LICENSE-2.0
  9. *
  10. * Unless required by applicable law or agreed to in writing, software
  11. * distributed under the License is distributed on an "AS IS" BASIS,
  12. * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13. * See the License for the specific language governing permissions and
  14. * limitations under the License.
  15. */
  16. #include "hybrid/executor/hybrid_model_async_executor.h"
  17. #include "graph/load/model_manager/model_utils.h"
  18. #include "graph/utils/tensor_utils.h"
  19. #include "graph/utils/type_utils.h"
  20. #include "graph/ge_context.h"
  21. #include "omm/csa_interact.h"
  22. namespace ge {
  23. namespace hybrid {
  24. namespace {
  25. const int kDataOutputIndex = 0;
  26. const size_t kMinimumPiplineStages = 2;
  27. const int kDefaultLoopCount = 10;
  28. }
  29. HybridModelAsyncExecutor::HybridModelAsyncExecutor(HybridModel *model)
  30. : model_(model), run_flag_(false) {
  31. }
  32. HybridModelAsyncExecutor::~HybridModelAsyncExecutor() {
  33. if (stream_ != nullptr) {
  34. GE_CHK_RT(rtStreamDestroy(stream_));
  35. }
  36. }
  37. void HybridModelAsyncExecutor::SetDeviceId(uint32_t device_id) {
  38. device_id_ = device_id;
  39. }
  40. void HybridModelAsyncExecutor::SetModelId(uint32_t model_id) {
  41. model_id_ = model_id;
  42. }
  43. void HybridModelAsyncExecutor::SetModelName(const string &model_name) {
  44. om_name_ = model_name;
  45. }
  46. Status HybridModelAsyncExecutor::EnqueueData(const shared_ptr<InputDataWrapper> &data) {
  47. GE_CHK_STATUS_EXEC(data_inputer_->Push(data), return domi::DATA_QUEUE_ISFULL,
  48. "Data queue is full, please call again later, model_id %u ", model_id_);
  49. GELOGD("EnqueueData successfully. model_id = %u, data_index = %u", data->GetInput().model_id, data->GetInput().index);
  50. return SUCCESS;
  51. }
  52. Status HybridModelAsyncExecutor::Start(const std::shared_ptr<ModelListener> &listener) {
  53. GELOGD("HybridModelExecutor::Start IN, has listener = %d", listener != nullptr);
  54. std::lock_guard<std::mutex> lk(mu_);
  55. GE_CHK_BOOL_RET_STATUS(!run_flag_, INTERNAL_ERROR, "Model already started.");
  56. run_flag_ = true;
  57. listener_ = listener;
  58. future_ = std::async(std::launch::async, [&]() -> Status {
  59. GetThreadLocalContext() = *executor_->GetContext()->ge_context;
  60. GetContext().SetSessionId(executor_->GetContext()->session_id);
  61. return RunInternal();
  62. });
  63. GE_CHK_BOOL_RET_STATUS(future_.valid(), INTERNAL_ERROR, "Failed to start.");
  64. GELOGD("HybridModelExecutor::Start successfully");
  65. return SUCCESS;
  66. }
  67. Status HybridModelAsyncExecutor::Stop() {
  68. std::lock_guard<std::mutex> lk(mu_);
  69. run_flag_ = false;
  70. data_inputer_->Stop();
  71. Status ret = SUCCESS;
  72. if (future_.valid()) {
  73. ret = future_.get();
  74. }
  75. if (stream_ != nullptr) {
  76. GE_CHK_RT(rtStreamDestroy(stream_));
  77. stream_ = nullptr;
  78. }
  79. return ret;
  80. }
  81. Status HybridModelAsyncExecutor::Init() {
  82. data_inputer_ = std::unique_ptr<DataInputer>(new(std::nothrow) DataInputer());
  83. GE_CHECK_NOTNULL(data_inputer_);
  84. GE_CHK_RT_RET(rtStreamCreate(&stream_, RT_STREAM_PRIORITY_DEFAULT));
  85. executor_ = std::unique_ptr<HybridModelExecutor>(new(std::nothrow) HybridModelExecutor(model_, device_id_, stream_));
  86. GE_CHECK_NOTNULL(executor_);
  87. GE_CHK_STATUS_RET(executor_->Init(), "Failed to init hybrid engine");
  88. GELOGI("HybridModel stage nums:%zu", model_->GetRootGraphItem()->NumGroups());
  89. if (model_->GetRootGraphItem()->NumGroups() >= kMinimumPiplineStages) {
  90. pipe_executor_ =
  91. std::unique_ptr<HybridModelPipelineExecutor>(new(std::nothrow) HybridModelPipelineExecutor(model_, device_id_));
  92. GE_CHECK_NOTNULL(pipe_executor_);
  93. GE_CHK_STATUS_RET(pipe_executor_->Init(), "Failed to init hybrid engine");
  94. }
  95. GE_CHK_STATUS_RET(InitInputDesc(), "Failed to init input tensors");
  96. return SUCCESS;
  97. }
  98. Status HybridModelAsyncExecutor::PreRun(InputData &current_data, HybridModelExecutor::ExecuteArgs &args) {
  99. GE_CHK_STATUS_RET(SyncVarData(), "Failed to sync var data");
  100. RECORD_MODEL_EXECUTION_EVENT(executor_->GetContext(), "[SyncVarData] End");
  101. GE_CHK_STATUS_RET(PrepareInputs(current_data, args), "Failed to copy input data to model");
  102. RECORD_MODEL_EXECUTION_EVENT(executor_->GetContext(), "[CopyInputData] End");
  103. return SUCCESS;
  104. }
  105. Status HybridModelAsyncExecutor::RunInternal() {
  106. auto device_id = static_cast<int32_t>(device_id_);
  107. GELOGD("Hybrid model start. model_id = %u, device_id = %u", model_id_, device_id_);
  108. GE_CHK_RT_RET(rtSetDevice(device_id));
  109. // DeviceReset before thread run finished!
  110. GE_MAKE_GUARD(not_used_var, [&] { GE_CHK_RT(rtDeviceReset(device_id)); });
  111. while (run_flag_) {
  112. std::shared_ptr<InputDataWrapper> data_wrapper;
  113. Status ret = data_inputer_->Pop(data_wrapper);
  114. if (data_wrapper == nullptr || ret != SUCCESS) {
  115. GELOGI("data_wrapper is null!, ret = %u", ret);
  116. continue;
  117. }
  118. GELOGI("Getting the input data, model_id:%u", model_id_);
  119. GE_IF_BOOL_EXEC(!run_flag_, break);
  120. InputData current_data = data_wrapper->GetInput();
  121. GELOGI("Model thread Run begin, model id:%u, data index:%u.", model_id_, current_data.index);
  122. RECORD_MODEL_EXECUTION_EVENT(executor_->GetContext(), "[RunInternal] [iteration = %d] Start", iterator_count_);
  123. HybridModelExecutor::ExecuteArgs args;
  124. ret = PreRun(current_data, args);
  125. GE_CHK_BOOL_TRUE_EXEC_WITH_LOG(
  126. ret != SUCCESS, (void) HandleResult(ret, current_data.index, args, data_wrapper->GetOutput());
  127. CsaInteract::GetInstance().StoreInternalErrorCode(ret, ERROR_MODULE_FMK, JOBSUBSTATE_GRAPH_EXEC);
  128. continue, "PreRun failed."); // [No need to check value]
  129. if (pipe_executor_ != nullptr) {
  130. GELOGI("HybridModel will execute in pipeline mode");
  131. auto iter_per_run = std::getenv("ITER_NUM");
  132. if (iter_per_run) {
  133. args.num_loops = static_cast<int>(strtol(iter_per_run, nullptr, kDefaultLoopCount));
  134. }
  135. ret = pipe_executor_->Execute(args);
  136. } else {
  137. GELOGI("HybridModel will execute in singleline mode");
  138. ge::GetContext().SetSessionId(executor_->GetContext()->session_id);
  139. ret = executor_->Execute(args);
  140. }
  141. ret = HandleResult(ret, current_data.index, args, data_wrapper->GetOutput());
  142. if (ret != SUCCESS) {
  143. CsaInteract::GetInstance().StoreInternalErrorCode(ret, ERROR_MODULE_RUNTIME, JOBSUBSTATE_GRAPH_EXEC);
  144. continue;
  145. }
  146. RECORD_MODEL_EXECUTION_EVENT(executor_->GetContext(), "[RunInternal] [iteration = %d] End", iterator_count_);
  147. iterator_count_++;
  148. GELOGI("run iterator count is %lu", iterator_count_);
  149. }
  150. CsaInteract::GetInstance().WriteInternalErrorCode();
  151. GELOGI("Model run end, model id:%u", model_id_);
  152. return SUCCESS;
  153. }
  154. Status HybridModelAsyncExecutor::HandleResult(Status exec_ret,
  155. uint32_t data_id,
  156. HybridModelExecutor::ExecuteArgs &args,
  157. OutputData *output_data) {
  158. GELOGD("Start to handle result. model id = %u, data index = %u, execution ret = %u", model_id_, data_id, exec_ret);
  159. std::vector<ge::OutputTensorInfo> output_tensor_info_list;
  160. if (args.is_eos) {
  161. GELOGI("End of sequence, model id = %u", model_id_);
  162. GE_CHK_STATUS_RET_NOLOG(OnComputeDone(data_id, END_OF_SEQUENCE, output_tensor_info_list));
  163. return SUCCESS;
  164. }
  165. if (exec_ret != SUCCESS) {
  166. GELOGE(exec_ret, "Failed to execute graph. model_id = %u", model_id_);
  167. return OnComputeDone(data_id, INTERNAL_ERROR, output_tensor_info_list);
  168. }
  169. GE_CHECK_NOTNULL(output_data);
  170. auto ret = CopyOutputs(args, output_data, output_tensor_info_list);
  171. if (ret != SUCCESS) {
  172. OnComputeDone(data_id, INTERNAL_ERROR, output_tensor_info_list);
  173. return INTERNAL_ERROR;
  174. }
  175. GELOGD("Executed graph successfully, model id = %u, data_index = %u", model_id_, data_id);
  176. return OnComputeDone(data_id, SUCCESS, output_tensor_info_list);
  177. }
  178. Status HybridModelAsyncExecutor::SyncVarData() {
  179. GELOGI("Sync var data, model id:%u", model_id_);
  180. TensorValue *global_step_var = model_->GetVariable(NODE_NAME_GLOBAL_STEP);
  181. if (global_step_var != nullptr) {
  182. std::vector<uint64_t> v_step;
  183. v_step.push_back(iterator_count_);
  184. GE_CHK_RT_RET(rtMemcpy(global_step_var->MutableData(),
  185. global_step_var->GetSize(),
  186. v_step.data(),
  187. v_step.size() * sizeof(uint64_t),
  188. RT_MEMCPY_HOST_TO_DEVICE));
  189. } else {
  190. GELOGD("No GLOBAL_STEP variable was found.");
  191. }
  192. return SUCCESS;
  193. }
  194. Status HybridModelAsyncExecutor::PrepareInputs(const InputData &current_data, HybridModelExecutor::ExecuteArgs &args) {
  195. if (current_data.blobs.size() < input_tensor_desc_.size()) {
  196. GELOGE(PARAM_INVALID, "Blob size mismatches, expect at least %zu, but got %zu",
  197. input_tensor_desc_.size(), current_data.blobs.size());
  198. return PARAM_INVALID;
  199. }
  200. auto allocator = NpuMemoryAllocator::GetAllocator(device_id_);
  201. GE_CHECK_NOTNULL(allocator);
  202. args.input_desc.resize(input_tensor_desc_.size());
  203. const std::vector<DataBuffer> &blobs = current_data.blobs;
  204. for (size_t input_index = 0; input_index < input_tensor_desc_.size(); ++input_index) {
  205. auto tensor_size = input_sizes_[input_index];
  206. if (is_input_dynamic_[input_index]) {
  207. if (input_index >= current_data.shapes.size()) {
  208. GELOGE(PARAM_INVALID, "Shape index out of range, index = %zu, shape size = %zu",
  209. input_index, current_data.shapes.size());
  210. return PARAM_INVALID;
  211. }
  212. auto &tensor_desc = input_tensor_desc_[input_index];
  213. GeShape shape(current_data.shapes[input_index]);
  214. std::vector<std::pair<int64_t, int64_t>> range;
  215. auto range_ret = tensor_desc->GetShapeRange(range);
  216. GE_CHK_BOOL_RET_STATUS(range_ret == GRAPH_SUCCESS, INTERNAL_ERROR,
  217. "Get shape range failed, ret=%u.", range_ret);
  218. for (size_t k = 0; k < range.size(); ++k) {
  219. if (k >= shape.GetDimNum()) {
  220. break;
  221. }
  222. // range[k].second can be -1
  223. if (shape.GetDim(k) < range[k].first || (range[k].second >= 0 && shape.GetDim(k) > range[k].second)) {
  224. GELOGE(PARAM_INVALID, "Dim out of range, shape idx = %zu, dim idx = %zu, dim = %ld, range = [%ld, %ld]",
  225. input_index, k, shape.GetDim(k), range[k].first, range[k].second);
  226. return PARAM_INVALID;
  227. }
  228. }
  229. tensor_desc->SetShape(shape);
  230. args.input_desc[input_index] = tensor_desc;
  231. GELOGD("Update shape of input[%zu] to [%s]", input_index, tensor_desc->MutableShape().ToString().c_str());
  232. GE_CHK_GRAPH_STATUS_RET(TensorUtils::GetTensorMemorySizeInBytes(*tensor_desc, tensor_size),
  233. "Failed to calc tensor size, index = %zu, shape = [%s]",
  234. input_index,
  235. tensor_desc->GetShape().ToString().c_str());
  236. GELOGD("Input tensor[%zu] size = %zu", input_index, tensor_size);
  237. }
  238. GE_CHECK_GE(tensor_size, 0);
  239. AllocationAttr attr;
  240. if (GetContext().GetHostExecFlag()) {
  241. attr.SetMemType(HOST_DDR);
  242. }
  243. auto tensor_buffer = TensorBuffer::Create(allocator, tensor_size, &attr);
  244. GE_CHECK_NOTNULL(tensor_buffer);
  245. args.inputs.emplace_back(std::shared_ptr<TensorBuffer>(tensor_buffer.release()));
  246. GELOGD("To copy input data for input[%zu]", input_index);
  247. const DataBuffer &data_buf = blobs[input_index];
  248. auto mem_size = static_cast<uint64_t>(tensor_size);
  249. GE_CHK_BOOL_RET_STATUS(mem_size >= data_buf.length,
  250. PARAM_INVALID,
  251. "input data size(%lu) does not match model required size(%lu), ret failed.",
  252. data_buf.length,
  253. mem_size);
  254. GELOGI("[IMAS]CopyPlainData memcpy graph_%u type[F] output[%zu] memaddr[%p] mem_size[%zu] datasize[%lu]",
  255. model_->root_runtime_param_.graph_id,
  256. input_index,
  257. args.inputs[input_index].GetData(),
  258. mem_size,
  259. data_buf.length);
  260. GE_CHK_RT_RET(rtMemcpy(args.inputs[input_index].MutableData(),
  261. mem_size,
  262. data_buf.data,
  263. data_buf.length,
  264. RT_MEMCPY_HOST_TO_DEVICE));
  265. }
  266. return SUCCESS;
  267. }
  268. Status HybridModelAsyncExecutor::InitInputDesc() {
  269. int input_index = 0;
  270. for (const auto &input_node : model_->GetRootGraphItem()->GetInputNodes()) {
  271. GELOGD("Init input[%u], node = %s, is_dynamic = %d",
  272. input_index,
  273. input_node->NodeName().c_str(),
  274. input_node->is_dynamic);
  275. auto output_desc = input_node->MutableOutputDesc(kDataOutputIndex);
  276. GE_CHECK_NOTNULL(output_desc);
  277. int64_t tensor_size = -1;
  278. if (!input_node->is_dynamic) {
  279. GE_CHK_GRAPH_STATUS_RET(TensorUtils::GetSize(*output_desc, tensor_size),
  280. "Failed to get size from %s",
  281. input_node->NodeName().c_str());
  282. if (tensor_size == 0) {
  283. GELOGW("[%s] Tensor size == 0", input_node->NodeName().c_str());
  284. GE_CHK_GRAPH_STATUS_RET(TensorUtils::GetTensorMemorySizeInBytes(*output_desc, tensor_size),
  285. "Failed to calc tensor size");
  286. GELOGD("[%s] Tensor size updated to %ld", input_node->NodeName().c_str(), tensor_size);
  287. }
  288. }
  289. input_sizes_.emplace(input_index, tensor_size);
  290. input_tensor_desc_.emplace(input_index, output_desc);
  291. is_input_dynamic_.push_back(input_node->is_dynamic);
  292. input_index += 1;
  293. }
  294. return SUCCESS;
  295. }
  296. Status HybridModelAsyncExecutor::OnComputeDone(uint32_t data_index, uint32_t result_code,
  297. std::vector<ge::OutputTensorInfo> &outputs) {
  298. GELOGD("OnComputeDone. model id = %u, data index = %u, execution ret = %u", model_id_, data_index, result_code);
  299. if (listener_ != nullptr) {
  300. GE_CHK_STATUS(listener_->OnComputeDone(model_id_, data_index, result_code, outputs),
  301. "OnComputeDone failed");
  302. }
  303. return result_code;
  304. }
  305. Status HybridModelAsyncExecutor::CopyOutputs(HybridModelExecutor::ExecuteArgs &args,
  306. OutputData *output_data,
  307. std::vector<ge::OutputTensorInfo> &outputs) {
  308. // copy output data from op to designated position
  309. std::vector<ConstGeTensorDescPtr> &output_tensor_desc_list = args.output_desc;
  310. std::vector<TensorValue> &output_tensors = args.outputs;
  311. if (output_tensor_desc_list.size() != output_tensors.size()) {
  312. GELOGE(INTERNAL_ERROR,
  313. "Output sizes mismatch. From op_desc = %zu, and from output tensors = %zu",
  314. output_tensor_desc_list.size(),
  315. output_tensors.size());
  316. return INTERNAL_ERROR;
  317. }
  318. GELOGD("Number of outputs = %zu", output_tensor_desc_list.size());
  319. for (size_t i = 0; i < output_tensors.size(); ++i) {
  320. GELOGD("Start to process output[%zu]", i);
  321. auto &output_tensor = output_tensors[i];
  322. auto &tensor_desc = output_tensor_desc_list.at(i);
  323. GE_CHECK_NOTNULL(tensor_desc);
  324. int64_t output_size = -1;
  325. GE_CHK_GRAPH_STATUS_RET(TensorUtils::CalcTensorMemSize(tensor_desc->GetShape(),
  326. tensor_desc->GetFormat(),
  327. tensor_desc->GetDataType(),
  328. output_size),
  329. "Failed to calc tensor size for output[%zu]. shape = [%s], type = %s, format = %s",
  330. i,
  331. tensor_desc->GetShape().ToString().c_str(),
  332. TypeUtils::DataTypeToSerialString(tensor_desc->GetDataType()).c_str(),
  333. TypeUtils::FormatToSerialString(tensor_desc->GetFormat()).c_str());
  334. GELOGD("Got tensor size for output[%zu] successfully. shape = [%s], type = %s, format = %s, size = %ld",
  335. i,
  336. tensor_desc->GetShape().ToString().c_str(),
  337. TypeUtils::DataTypeToSerialString(tensor_desc->GetDataType()).c_str(),
  338. TypeUtils::FormatToSerialString(tensor_desc->GetFormat()).c_str(),
  339. output_size);
  340. GE_CHECK_GE(output_size, 0);
  341. GE_CHECK_LE(output_size, UINT32_MAX);
  342. if (output_tensor.GetSize() < static_cast<size_t>(output_size)) {
  343. GELOGE(INTERNAL_ERROR,
  344. "output[%zu] tensor size(%zu) is not enough for output shape [%s]",
  345. i, output_tensor.GetSize(), tensor_desc->GetShape().ToString().c_str());
  346. return INTERNAL_ERROR;
  347. }
  348. ge::OutputTensorInfo output;
  349. output.data_type = static_cast<uint32_t>(tensor_desc->GetDataType());
  350. output.dims = tensor_desc->GetShape().GetDims();
  351. output.length = output_size;
  352. if (output_size > 0) {
  353. std::unique_ptr<uint8_t[]> data_buf(new(std::nothrow) uint8_t[output_size]);
  354. GE_CHECK_NOTNULL(data_buf);
  355. GE_CHK_RT_RET(rtMemcpy(data_buf.get(),
  356. output_size,
  357. output_tensor.GetData(),
  358. output_size,
  359. RT_MEMCPY_DEVICE_TO_HOST));
  360. output.data = std::move(data_buf);
  361. output_data->blobs.emplace_back(data_buf.get(), static_cast<uint32_t>(output_size), false);
  362. } else {
  363. GELOGW("Output[%zu] is empty. shape = [%s]", i, tensor_desc->GetShape().ToString().c_str());
  364. output.data = nullptr;
  365. output_data->blobs.emplace_back(nullptr, 0U, false);
  366. }
  367. outputs.emplace_back(std::move(output));
  368. GELOGD("Output[%zu] added, type = %s, shape = [%s], size = %ld",
  369. i,
  370. TypeUtils::DataTypeToSerialString(tensor_desc->GetDataType()).c_str(),
  371. tensor_desc->GetShape().ToString().c_str(),
  372. output_size);
  373. }
  374. return SUCCESS;
  375. }
  376. Status HybridModelAsyncExecutor::Execute(const std::vector<DataBuffer> &inputs,
  377. const std::vector<GeTensorDesc> &input_desc,
  378. std::vector<DataBuffer> &outputs,
  379. std::vector<GeTensorDesc> &output_desc) {
  380. GELOGI("Start to execute model.");
  381. HybridModelExecutor::ExecuteArgs args;
  382. args.inputs.resize(inputs.size());
  383. for (size_t i = 0; i < inputs.size(); ++i) {
  384. TensorValue tensor_value(inputs[i].data, inputs[i].length);
  385. args.inputs[i] = tensor_value;
  386. }
  387. for (size_t i = 0; i < outputs.size(); ++i) {
  388. args.outputs.emplace_back(TensorValue(outputs[i].data, outputs[i].length));
  389. }
  390. // usr must designate input tensorDesc when input shape is dynamic in inference
  391. for (size_t i = 0; i < input_desc.size(); ++i) {
  392. ConstGeTensorDescPtr tensor_desc_ptr = MakeShared<GeTensorDesc>(input_desc[i]);
  393. args.input_desc.emplace_back(tensor_desc_ptr);
  394. }
  395. GE_CHK_STATUS_RET(executor_->Execute(args), "Failed to execute model.");
  396. for (const auto &output_tensor_desc : args.output_desc) {
  397. output_desc.emplace_back(*output_tensor_desc);
  398. }
  399. return SUCCESS;
  400. }
  401. Status HybridModelAsyncExecutor::Execute(const vector<GeTensor> &inputs, vector<GeTensor> &outputs) {
  402. GELOGD("Start to execute model.");
  403. // prepare inputs
  404. InputData input_data;
  405. for (auto &tensor : inputs) {
  406. DataBuffer buffer;
  407. buffer.data = const_cast<uint8_t *>(tensor.GetData().GetData());
  408. buffer.length = tensor.GetData().size();
  409. input_data.blobs.emplace_back(buffer);
  410. input_data.shapes.emplace_back(tensor.GetTensorDesc().GetShape().GetDims());
  411. }
  412. HybridModelExecutor::ExecuteArgs args;
  413. GE_CHK_STATUS_RET(PrepareInputs(input_data, args), "Failed to copy input data to model");
  414. GELOGD("Done copying input data successfully.");
  415. GE_CHK_STATUS_RET(executor_->Execute(args), "Failed to execute model.");
  416. std::vector<ge::OutputTensorInfo> output_tensor_info_list;
  417. OutputData output_data;
  418. GE_CHK_STATUS_RET(CopyOutputs(args, &output_data, output_tensor_info_list), "Failed to copy outputs.");
  419. GELOGD("Done copying output data successfully. output count = %zu", output_tensor_info_list.size());
  420. int out_index = 0;
  421. outputs.resize(output_tensor_info_list.size());
  422. for (auto &out_tensor_info : output_tensor_info_list) {
  423. auto &ge_tensor = outputs[out_index];
  424. if (out_tensor_info.length > 0) {
  425. GE_CHK_GRAPH_STATUS_RET(ge_tensor.SetData(out_tensor_info.data.get(), out_tensor_info.length),
  426. "Failed to set output[%d].", out_index);
  427. }
  428. ge_tensor.MutableTensorDesc() = *args.output_desc[out_index];
  429. GELOGD("Set output[%d], tensor size = %ld, shape = [%s]",
  430. out_index,
  431. out_tensor_info.length,
  432. ge_tensor.MutableTensorDesc().MutableShape().ToString().c_str());
  433. ++out_index;
  434. }
  435. return SUCCESS;
  436. }
  437. } // namespace hybrid
  438. } // namespace ge

图引擎模块(GE)是MindSpore的一个子模块,其代码由C++实现,位于前端模块ME和底层硬件之间,起到承接作用。图引擎模块以ME下发的图作为输入,然后进行一系列的深度图优化操作,最后输出一张可以在底层硬件上高效运行的图。GE针对昇腾AI处理器的硬件结构特点,做了特定的优化工作,以此来充分发挥出昇腾AI处理器的强大算力。在进行模型训练/推理时,GE会被自动调用而用户并不感知。GE主要由GE API和GE Core两部分组成,详细的架构图如下所示