1 /* Copyright 2019 The TensorFlow Authors. All Rights Reserved. 2 3 Licensed under the Apache License, Version 2.0 (the "License"); 4 you may not use this file except in compliance with the License. 5 You may obtain a copy of the License at 6 7 http://www.apache.org/licenses/LICENSE-2.0 8 9 Unless required by applicable law or agreed to in writing, software 10 distributed under the License is distributed on an "AS IS" BASIS, 11 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 See the License for the specific language governing permissions and 13 limitations under the License. 14 ==============================================================================*/ 15 16 #ifndef TENSORFLOW_COMPILER_JIT_CLUSTER_SCOPING_PASS_H_ 17 #define TENSORFLOW_COMPILER_JIT_CLUSTER_SCOPING_PASS_H_ 18 19 #include "tensorflow/core/common_runtime/optimization_registry.h" 20 21 namespace tensorflow { 22 23 // This pass adds scopes to nodes in the _XlaInternalScope attribute to guide 24 // the later clustering passes. A major reason to do this is to prevent the 25 // clustering from losing critical parallelism in the Tensorflow graph, which 26 // can incur great performance degradation. 27 // 28 // This pass must be run before MarkForCompilationPass, as it stores the 29 // scoping information that MarkForCompilationPass will need to respect for 30 // clustering decision. 31 class ClusterScopingPass : public GraphOptimizationPass { 32 public: 33 Status Run(const GraphOptimizationPassOptions& options) override; 34 }; 35 36 } // namespace tensorflow 37 38 #endif // TENSORFLOW_COMPILER_JIT_CLUSTER_SCOPING_PASS_H_ 39