1 /* Copyright 2021 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_XLA_SERVICE_ALL_REDUCE_CONTIGUOUS_H_ 17 #define TENSORFLOW_COMPILER_XLA_SERVICE_ALL_REDUCE_CONTIGUOUS_H_ 18 19 #include "tensorflow/compiler/xla/service/hlo_module.h" 20 #include "tensorflow/compiler/xla/service/hlo_pass_interface.h" 21 #include "tensorflow/compiler/xla/statusor.h" 22 23 namespace xla { 24 25 // Concatenates all-reduce operands together, so the all-reduce is performed 26 // over a single, contiguous buffer. 27 class AllReduceContiguous : public HloModulePass { 28 public: name()29 absl::string_view name() const override { return "all-reduce-contiguous"; } 30 31 using HloPassInterface::Run; 32 StatusOr<bool> Run( 33 HloModule* module, 34 const absl::flat_hash_set<absl::string_view>& execution_threads) override; 35 }; 36 37 } // namespace xla 38 39 #endif // TENSORFLOW_COMPILER_XLA_SERVICE_ALL_REDUCE_CONTIGUOUS_H_ 40