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execution_engine.cc 20 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/worker/execution_engine.h"
  17. #include "graph/runtime_inference_context.h"
  18. #include "graph/utils/tensor_utils.h"
  19. #include "graph/utils/tensor_adapter.h"
  20. #include "graph/debug/ge_attr_define.h"
  21. #include "hybrid/node_executor/node_executor.h"
  22. #include "common/dump/dump_manager.h"
  23. #include "common/dump/dump_op.h"
  24. #include "common/types.h"
  25. #include "common/ge_types.h"
  26. #include "common/profiling/profiling_manager.h"
  27. #include "runtime/base.h"
  28. namespace ge {
  29. namespace hybrid {
  30. namespace {
  31. constexpr int64_t kMaxPadding = 63;
  32. Status LogInputs(const NodeItem &node_item, const TaskContext &task_context) {
  33. for (auto i = 0; i < task_context.NumInputs(); ++i) {
  34. const auto &input_tensor = task_context.GetInput(i);
  35. GE_CHECK_NOTNULL(input_tensor);
  36. const auto &tensor_desc = node_item.op_desc->MutableInputDesc(i);
  37. GE_CHECK_NOTNULL(tensor_desc);
  38. GELOGD("[%s] Print task args. input[%d] = %s, shape = [%s]",
  39. node_item.NodeName().c_str(),
  40. i,
  41. input_tensor->DebugString().c_str(),
  42. tensor_desc->MutableShape().ToString().c_str());
  43. }
  44. return SUCCESS;
  45. }
  46. Status LogOutputs(const NodeItem &node_item, const TaskContext &task_context) {
  47. for (auto i = 0; i < task_context.NumOutputs(); ++i) {
  48. const auto &output_tensor = task_context.GetOutput(i);
  49. GE_CHECK_NOTNULL(output_tensor);
  50. const auto &tensor_desc = node_item.op_desc->MutableOutputDesc(i);
  51. GE_CHECK_NOTNULL(tensor_desc);
  52. GELOGD("[%s] Print task args. output[%d] = %s, shape = [%s]",
  53. node_item.NodeName().c_str(),
  54. i,
  55. output_tensor->DebugString().c_str(),
  56. tensor_desc->MutableShape().ToString().c_str());
  57. }
  58. return SUCCESS;
  59. }
  60. } // namespace
  61. class NodeDoneCallback {
  62. public:
  63. NodeDoneCallback(GraphExecutionContext *graph_context, std::shared_ptr<TaskContext> task_context);
  64. ~NodeDoneCallback() = default;
  65. Status OnNodeDone();
  66. private:
  67. Status PrepareConstInputs(const NodeItem &node_item);
  68. Status DumpDynamicNode();
  69. Status ProfilingReport();
  70. Status GetGraphDescInfo(const NodePtr node, const HybridModel *model,
  71. std::vector<ComputeGraphDescInfo> &compute_graph_info);
  72. Status GetTaskDescInfo(const NodePtr node, const HybridModel *model,
  73. std::vector<TaskDescInfo> &task_desc_info);
  74. GraphExecutionContext *graph_context_;
  75. std::shared_ptr<TaskContext> context_;
  76. DumpOp dump_op_;
  77. };
  78. NodeDoneCallback::NodeDoneCallback(GraphExecutionContext *graph_context,
  79. std::shared_ptr<TaskContext> task_context)
  80. : graph_context_(graph_context), context_(std::move(task_context)) {
  81. }
  82. Status NodeDoneCallback::PrepareConstInputs(const NodeItem &node_item) {
  83. for (auto output_idx : node_item.to_const_output_id_list) {
  84. RECORD_CALLBACK_EVENT(graph_context_, node_item.NodeName().c_str(),
  85. "[PrepareConstInputs] [index = %d] Start",
  86. output_idx);
  87. auto output_tensor = context_->GetOutput(output_idx);
  88. GE_CHECK_NOTNULL(output_tensor);
  89. Tensor tensor;
  90. auto ge_tensor_desc = node_item.op_desc->MutableOutputDesc(output_idx);
  91. GE_CHECK_NOTNULL(ge_tensor_desc);
  92. tensor.SetTensorDesc(TensorAdapter::GeTensorDesc2TensorDesc(*ge_tensor_desc));
  93. int64_t tensor_size;
  94. GE_CHK_GRAPH_STATUS_RET(TensorUtils::GetTensorSizeInBytes(*ge_tensor_desc, tensor_size),
  95. "Failed to invoke GetTensorSizeInBytes");
  96. if (output_tensor->GetSize() < static_cast<size_t>(tensor_size)) {
  97. GELOGE(INTERNAL_ERROR,
  98. "[%s] Tensor size is not enough. output index = %d, required size = %zu, tensor = %s",
  99. node_item.NodeName().c_str(),
  100. output_idx,
  101. tensor_size,
  102. output_tensor->DebugString().c_str());
  103. return INTERNAL_ERROR;
  104. }
  105. vector<uint8_t> host_buffer(static_cast<unsigned long>(tensor_size));
  106. GELOGD("[%s] To cache output[%d] to host, size = %zu",
  107. node_item.NodeName().c_str(),
  108. output_idx,
  109. output_tensor->GetSize());
  110. GE_CHK_RT_RET(rtMemcpy(host_buffer.data(),
  111. tensor_size,
  112. output_tensor->GetData(),
  113. tensor_size,
  114. RT_MEMCPY_DEVICE_TO_HOST));
  115. tensor.SetData(std::move(host_buffer));
  116. string session_id = std::to_string(context_->GetSessionId());
  117. RuntimeInferenceContext *runtime_infer_ctx = nullptr;
  118. GE_CHK_GRAPH_STATUS_RET(RuntimeInferenceContext::GetContext(session_id, &runtime_infer_ctx),
  119. "Failed to get RuntimeInferenceContext, session_id = %s", session_id.c_str());
  120. GE_CHK_STATUS_RET(runtime_infer_ctx->SetTensor(node_item.node_id, output_idx, std::move(tensor)),
  121. "Failed to SetTensor, node = %s, output_index = %d", node_item.NodeName().c_str(), output_idx);
  122. GELOGD("[%s] Output[%d] cached successfully in session: %s. node_id = %d, shape = [%s]",
  123. node_item.NodeName().c_str(),
  124. output_idx,
  125. session_id.c_str(),
  126. node_item.node_id,
  127. ge_tensor_desc->GetShape().ToString().c_str());
  128. RECORD_CALLBACK_EVENT(graph_context_, node_item.NodeName().c_str(),
  129. "[PrepareConstInputs] [index = %d] End",
  130. output_idx);
  131. }
  132. return SUCCESS;
  133. }
  134. Status NodeDoneCallback::GetTaskDescInfo(const NodePtr node, const HybridModel *model,
  135. std::vector<TaskDescInfo> &task_desc_info) {
  136. GE_CHECK_NOTNULL(node);
  137. GE_CHECK_NOTNULL(model);
  138. GELOGD("GetTaskDescInfo of node [%s] start.", node->GetName().c_str());
  139. auto op_desc = node->GetOpDesc();
  140. std::string op_name = op_desc->GetName();
  141. std::string dynamic_model_name = model->GetModelName();
  142. uint32_t task_id = 0;
  143. uint32_t stream_id = 0;
  144. if (rtGetTaskIdAndStreamID(&task_id, &stream_id) != RT_ERROR_NONE) {
  145. GELOGE(PARAM_INVALID, "Get task_id and stream_id failed.");
  146. return PARAM_INVALID;
  147. }
  148. TaskDescInfo tmp_task_desc_info;
  149. tmp_task_desc_info.model_name = dynamic_model_name;
  150. tmp_task_desc_info.op_name = op_name;
  151. tmp_task_desc_info.block_dim = 0;
  152. auto task_defs = model->GetTaskDefs(node);
  153. if (task_defs != nullptr && (*task_defs).size() > 0) {
  154. const auto &task_def = (*task_defs)[0];
  155. tmp_task_desc_info.block_dim = task_def.kernel().block_dim();
  156. }
  157. tmp_task_desc_info.task_id = task_id;
  158. tmp_task_desc_info.stream_id = stream_id;
  159. GELOGD("GetTaskDescInfo of node [%s] end, task_id[%u], stream_id[%u]",
  160. node->GetName().c_str(), task_id, stream_id);
  161. task_desc_info.emplace_back(tmp_task_desc_info);
  162. return SUCCESS;
  163. }
  164. Status NodeDoneCallback::GetGraphDescInfo(const NodePtr node, const HybridModel *model,
  165. std::vector<ComputeGraphDescInfo> &compute_graph_info) {
  166. GE_CHECK_NOTNULL(node);
  167. GE_CHECK_NOTNULL(model);
  168. GELOGD("GetComputeGraphInfo of node [%s] start.", node->GetName().c_str());
  169. std::string dynamic_model_name = model->GetModelName();
  170. auto op_desc = node->GetOpDesc();
  171. if (op_desc == nullptr) {
  172. GELOGE(PARAM_INVALID, "op_desc is nullptr.");
  173. return PARAM_INVALID;
  174. }
  175. auto op_mode = static_cast<uint32_t>(domi::ImplyType::INVALID);
  176. if (AttrUtils::GetInt(op_desc, ATTR_NAME_IMPLY_TYPE, op_mode) &&
  177. op_mode == static_cast<uint32_t>(domi::ImplyType::TVM)) {
  178. ComputeGraphDescInfo tmp_compute_graph_info;
  179. tmp_compute_graph_info.model_name = dynamic_model_name;
  180. tmp_compute_graph_info.op_name = op_desc->GetName();
  181. tmp_compute_graph_info.op_type = op_desc->GetType();
  182. for (size_t i = 0; i < op_desc->GetAllInputsSize(); ++i) {
  183. GeTensorDescPtr input_desc = op_desc->MutableInputDesc(i);
  184. if (input_desc == nullptr) {
  185. continue;
  186. }
  187. tmp_compute_graph_info.input_format.emplace_back(input_desc->GetFormat());
  188. tmp_compute_graph_info.input_shape.emplace_back(input_desc->GetShape().GetDims());
  189. tmp_compute_graph_info.input_data_type.emplace_back(input_desc->GetDataType());
  190. }
  191. for (size_t j = 0; j < op_desc->GetOutputsSize(); ++j) {
  192. GeTensorDesc output_desc = op_desc->GetOutputDesc(j);
  193. tmp_compute_graph_info.output_format.emplace_back(output_desc.GetFormat());
  194. tmp_compute_graph_info.output_shape.emplace_back(output_desc.GetShape().GetDims());
  195. tmp_compute_graph_info.output_data_type.emplace_back(output_desc.GetDataType());
  196. }
  197. compute_graph_info.emplace_back(tmp_compute_graph_info);
  198. GELOGD("GetComputeGraphInfo of node [%s] end.", node->GetName().c_str());
  199. }
  200. return SUCCESS;
  201. }
  202. Status NodeDoneCallback::ProfilingReport() {
  203. auto node = context_->GetNodeItem().node;
  204. if (node == nullptr) {
  205. GELOGE(PARAM_INVALID, "Get node is nullptr");
  206. return PARAM_INVALID;
  207. }
  208. const auto &op_type = node->GetType();
  209. if (op_type == PARTITIONEDCALL) {
  210. return SUCCESS;
  211. }
  212. GE_CHECK_NOTNULL(graph_context_);
  213. const HybridModel *model = graph_context_->model;
  214. GE_CHECK_NOTNULL(model);
  215. GELOGD("ProfilingReport of node [%s] model [%s] start.", node->GetName().c_str(), model->GetModelName().c_str());
  216. std::vector<TaskDescInfo> task_desc_info;
  217. TaskDescInfo tmp_task_desc_info;
  218. auto profiling_ret = GetTaskDescInfo(node, model, task_desc_info);
  219. if (profiling_ret != RT_ERROR_NONE) {
  220. GELOGE(profiling_ret, "Get task info of node[%s] failed.", node->GetName().c_str());
  221. return profiling_ret;
  222. }
  223. std::vector<ComputeGraphDescInfo> compute_graph_info;
  224. profiling_ret = GetGraphDescInfo(node, model, compute_graph_info);
  225. if (profiling_ret != RT_ERROR_NONE) {
  226. GELOGE(profiling_ret, "Get graph info of node[%s] failed.", node->GetName().c_str());
  227. return profiling_ret;
  228. }
  229. ProfilingManager::Instance().ReportProfilingData(task_desc_info, compute_graph_info);
  230. return SUCCESS;
  231. }
  232. Status NodeDoneCallback::DumpDynamicNode() {
  233. auto node = context_->GetNodeItem().node;
  234. if (node == nullptr) {
  235. GELOGE(PARAM_INVALID, "Get node is nullptr");
  236. return PARAM_INVALID;
  237. }
  238. auto op_desc = node->GetOpDesc();
  239. auto stream = context_->GetStream();
  240. vector<uintptr_t> input_addrs;
  241. vector<uintptr_t> output_addrs;
  242. for (int i = 0; i < context_->NumInputs(); i++) {
  243. auto tensor_value = context_->GetInput(i);
  244. GE_CHK_BOOL_RET_STATUS(tensor_value != nullptr, PARAM_INVALID, "Tensor value is nullptr");
  245. uint64_t input_addr = reinterpret_cast<uintptr_t>(tensor_value->GetData());
  246. input_addrs.emplace_back(input_addr);
  247. }
  248. for (int j = 0; j < context_->NumOutputs(); j++) {
  249. auto tensor_value = context_->GetOutput(j);
  250. GE_CHK_BOOL_RET_STATUS(tensor_value != nullptr, PARAM_INVALID, "Tensor value is nullptr");
  251. uint64_t output_addr = reinterpret_cast<uintptr_t>(tensor_value->GetData());
  252. output_addrs.emplace_back(output_addr);
  253. }
  254. dump_op_.SetDumpInfo(context_->GetDumpProperties(), op_desc, input_addrs, output_addrs, stream);
  255. GE_CHECK_NOTNULL(graph_context_);
  256. const HybridModel *model = graph_context_->model;
  257. GE_CHECK_NOTNULL(model);
  258. std::string dynamic_model_name = model->GetModelName();
  259. uint32_t model_id = model->GetModelId();
  260. dump_op_.SetDynamicModelInfo(dynamic_model_name, model_id);
  261. void *global_step = nullptr;
  262. TensorValue *varible_global_step = context_->GetVariable(NODE_NAME_GLOBAL_STEP);
  263. if (varible_global_step != nullptr) {
  264. global_step = const_cast<void *>(varible_global_step->GetData());
  265. }
  266. void *loop_per_iter = nullptr;
  267. TensorValue *varible_loop_per_iter = context_->GetVariable(NODE_NAME_FLOWCTRL_LOOP_PER_ITER);
  268. if (varible_loop_per_iter != nullptr) {
  269. loop_per_iter = const_cast<void *>(varible_loop_per_iter->GetData());
  270. }
  271. void *loop_cond = nullptr;
  272. TensorValue *varible_loop_cond = context_->GetVariable(NODE_NAME_FLOWCTRL_LOOP_COND);
  273. if (varible_loop_cond != nullptr) {
  274. loop_cond = const_cast<void *>(varible_loop_cond->GetData());
  275. }
  276. dump_op_.SetLoopAddr(global_step, loop_per_iter, loop_cond);
  277. GE_CHK_STATUS_RET(dump_op_.LaunchDumpOp(), "Failed to launch dump op in hybird model");
  278. auto rt_ret = rtStreamSynchronize(stream);
  279. if (rt_ret != RT_ERROR_NONE) {
  280. GELOGE(rt_ret, "rtStreamSynchronize failed");
  281. return rt_ret;
  282. }
  283. return SUCCESS;
  284. }
  285. Status NodeDoneCallback::OnNodeDone() {
  286. auto &node_item = context_->GetNodeItem();
  287. GELOGI("[%s] Start callback process.", node_item.NodeName().c_str());
  288. RECORD_CALLBACK_EVENT(graph_context_, context_->GetNodeName(), "[Compute] End");
  289. RECORD_CALLBACK_EVENT(graph_context_, context_->GetNodeName(), "[Callback] Start");
  290. auto dump_path = context_->GetDumpProperties().GetDumpPath();
  291. if (!dump_path.empty()) {
  292. GELOGI("Start to dump dynamic shape,dump_path is %s", dump_path.c_str());
  293. GE_CHK_STATUS_RET(DumpDynamicNode(), "Failed to dump dynamic node");
  294. }
  295. if (ProfilingManager::Instance().ProfilingModelExecuteOn()) {
  296. GE_CHK_STATUS_RET(ProfilingReport(), "Report node[%s] to profiling failed.",
  297. node_item.NodeName().c_str());
  298. }
  299. // release inputs
  300. for (int i = 0; i < context_->NumInputs(); ++i) {
  301. context_->ReleaseInput(i);
  302. }
  303. GE_CHK_STATUS_RET_NOLOG(PrepareConstInputs(node_item));
  304. // PropagateOutputs for type == DEPEND_COMPUTE
  305. if (node_item.shape_inference_type == DEPEND_COMPUTE) {
  306. if (graph_context_->trace_enabled) {
  307. (void) LogOutputs(node_item, *context_);
  308. }
  309. GE_CHK_STATUS_RET(context_->PropagateOutputs(),
  310. "[%s] Failed to propagate outputs failed",
  311. node_item.NodeName().c_str());
  312. RECORD_CALLBACK_EVENT(graph_context_, context_->GetNodeName(), "[PropagateOutputs] End");
  313. }
  314. // release condition variable
  315. if (node_item.has_observer) {
  316. GELOGI("[%s] Notify observer. node_id = %d", node_item.NodeName().c_str(), node_item.node_id);
  317. context_->NodeDone();
  318. }
  319. RECORD_CALLBACK_EVENT(graph_context_, context_->GetNodeName(), "[Callback] End");
  320. return SUCCESS;
  321. }
  322. Status ExecutionEngine::ExecuteAsync(NodeState &node_state,
  323. const std::shared_ptr<TaskContext> &task_context,
  324. GraphExecutionContext &execution_context) {
  325. GELOGI("[%s] Node is ready for execution", task_context->GetNodeName());
  326. RECORD_EXECUTION_EVENT(&execution_context, task_context->GetNodeName(), "Start");
  327. auto cb = std::shared_ptr<NodeDoneCallback>(new(std::nothrow) NodeDoneCallback(&execution_context, task_context));
  328. GE_CHECK_NOTNULL(cb);
  329. auto callback = [&, cb]() {
  330. auto ret = cb->OnNodeDone();
  331. if (ret != SUCCESS) {
  332. task_context->OnError(ret);
  333. }
  334. };
  335. GE_CHK_STATUS_RET_NOLOG(DoExecuteAsync(node_state, *task_context, execution_context, callback));
  336. GE_CHK_STATUS_RET_NOLOG(PropagateOutputs(*node_state.GetNodeItem(), *task_context, execution_context));
  337. return SUCCESS;
  338. }
  339. Status ExecutionEngine::DoExecuteAsync(NodeState &node_state,
  340. TaskContext &task_context,
  341. GraphExecutionContext &context,
  342. const std::function<void()> &callback) {
  343. const auto &task = node_state.GetKernelTask();
  344. if (task == nullptr) {
  345. GELOGE(INTERNAL_ERROR, "[%s] NodeTask is null.", node_state.GetName().c_str());
  346. return INTERNAL_ERROR;
  347. }
  348. // Wait for dependent nodes(DEPEND_COMPUTE), so that the input tensors are valid.
  349. RECORD_EXECUTION_EVENT(&context, task_context.GetNodeName(), "[AwaitDependents] Start");
  350. GE_CHK_STATUS_RET(node_state.AwaitInputTensors(context),
  351. "[%s] Failed to wait for dependent nodes.",
  352. node_state.GetName().c_str());
  353. const auto &node_item = *node_state.GetNodeItem();
  354. auto executor = node_item.node_executor;
  355. GE_CHECK_NOTNULL(executor);
  356. RECORD_EXECUTION_EVENT(&context, task_context.GetNodeName(), "[PrepareTask] Start");
  357. GE_CHK_STATUS_RET(executor->PrepareTask(*task, task_context),
  358. "[%s] Failed to prepare task",
  359. node_state.GetName().c_str());
  360. RECORD_EXECUTION_EVENT(&context, task_context.GetNodeName(), "[PrepareTask] End");
  361. GELOGD("[%s] Done task preparation successfully.", node_state.GetName().c_str());
  362. if (context.trace_enabled) {
  363. LogInputs(node_item, task_context);
  364. if (node_item.shape_inference_type != DEPEND_COMPUTE) {
  365. LogOutputs(node_item, task_context);
  366. }
  367. }
  368. GE_CHK_STATUS_RET(ValidateInputTensors(node_state, task_context), "Failed to validate input tensors.");
  369. RECORD_EXECUTION_EVENT(&context, task_context.GetNodeName(), "[ValidateInputTensors] End");
  370. if (context.profiling_level > 0) {
  371. auto *ctx = &context;
  372. const string &name = node_state.GetName();
  373. (void)task_context.RegisterCallback([ctx, name]() {
  374. RECORD_CALLBACK_EVENT(ctx, name.c_str(), "[Compute] Start");
  375. });
  376. }
  377. RECORD_EXECUTION_EVENT(&context, task_context.GetNodeName(), "[ExecuteTask] Start");
  378. GE_CHK_STATUS_RET(node_item.node_executor->ExecuteTask(*task, task_context, callback),
  379. "[%s] Failed to execute task",
  380. node_state.GetName().c_str());
  381. RECORD_EXECUTION_EVENT(&context, task_context.GetNodeName(), "[ExecuteTask] End");
  382. GELOGD("[%s] Done task launch successfully.", node_state.GetName().c_str());
  383. return SUCCESS;
  384. }
  385. Status ExecutionEngine::ValidateInputTensors(const NodeState &node_state, const TaskContext &task_context) {
  386. for (auto i = 0; i < task_context.NumInputs(); ++i) {
  387. const auto &input_tensor = task_context.GetInput(i);
  388. GE_CHECK_NOTNULL(input_tensor);
  389. if (input_tensor->GetData() == nullptr) {
  390. GELOGD("[%s] Skipping null input, index = %d", task_context.GetNodeName(), i);
  391. continue;
  392. }
  393. const auto &tensor_desc = node_state.GetOpDesc()->MutableInputDesc(i);
  394. GE_CHECK_NOTNULL(tensor_desc);
  395. if (tensor_desc->GetDataType() == DT_STRING) {
  396. GELOGD("[%s] Skipping DT_STRING input, index = %d", task_context.GetNodeName(), i);
  397. continue;
  398. }
  399. if (input_tensor->GetData() == nullptr) {
  400. GELOGD("[%s] Skipping null input, index = %d", task_context.GetNodeName(), i);
  401. continue;
  402. }
  403. int64_t expected_size;
  404. GE_CHK_GRAPH_STATUS_RET(TensorUtils::GetTensorMemorySizeInBytes(*tensor_desc, expected_size));
  405. GELOGD("[%s] Input[%d] expects [%ld] bytes.", task_context.GetNodeName(), i, expected_size);
  406. auto size_diff = expected_size - static_cast<int64_t>(input_tensor->GetSize());
  407. if (size_diff > 0) {
  408. if (size_diff <= kMaxPadding) {
  409. GELOGW("[%s] Input[%d]: tensor size mismatches. expected: %ld, but given %zu",
  410. task_context.GetNodeName(),
  411. i,
  412. expected_size,
  413. input_tensor->GetSize());
  414. } else {
  415. GELOGE(INTERNAL_ERROR,
  416. "[%s] Input[%d]: tensor size mismatches. expected: %ld, but given %zu",
  417. task_context.GetNodeName(),
  418. i,
  419. expected_size,
  420. input_tensor->GetSize());
  421. return INTERNAL_ERROR;
  422. }
  423. }
  424. }
  425. return SUCCESS;
  426. }
  427. Status ExecutionEngine::PropagateOutputs(const NodeItem &node_item,
  428. TaskContext &task_context,
  429. GraphExecutionContext &context) {
  430. if (node_item.shape_inference_type != DEPEND_COMPUTE) {
  431. GE_CHK_STATUS_RET(task_context.PropagateOutputs(),
  432. "[%s] Failed to propagate outputs.",
  433. node_item.NodeName().c_str());
  434. RECORD_EXECUTION_EVENT(&context, task_context.GetNodeName(), "[PropagateOutputs] End");
  435. GELOGD("[%s] Done propagating outputs successfully.", node_item.NodeName().c_str());
  436. }
  437. return SUCCESS;
  438. }
  439. } // namespace hybrid
  440. } // 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