1 /* Copyright 2020 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 // This file defines the types used in the standard MLIR TensorFlow dialect. 17 18 #ifndef TENSORFLOW_COMPILER_MLIR_TENSORFLOW_IR_TF_STRUCTS_H_ 19 #define TENSORFLOW_COMPILER_MLIR_TENSORFLOW_IR_TF_STRUCTS_H_ 20 21 #include "llvm/ADT/StringMap.h" 22 #include "mlir/IR/BuiltinTypes.h" // from @llvm-project 23 #include "mlir/IR/Diagnostics.h" // from @llvm-project 24 #include "mlir/IR/Location.h" // from @llvm-project 25 #include "mlir/IR/Operation.h" // from @llvm-project 26 #include "mlir/IR/Types.h" // from @llvm-project 27 #include "tensorflow/core/ir/types/dialect.h" 28 #include "tensorflow/core/util/device_name_utils.h" 29 30 namespace mlir { 31 namespace TF { 32 33 using GpuDeviceMetadata = tf_type::GpuDeviceMetadataAttr; 34 35 // Tensorflow devices available at runtime with corresponding metadata if it is 36 // available. It's completely valid to have a device without any metadata 37 // attached to it. 38 class RuntimeDevices { 39 using DeviceNameUtils = ::tensorflow::DeviceNameUtils; 40 using ParsedName = ::tensorflow::DeviceNameUtils::ParsedName; 41 42 public: 43 // Adds a device with and empty metadata. Device can be of any type. 44 void AddDevice(const ParsedName& device); 45 46 // Adds a GPU device with GPU specific metadata. 47 void AddGpuDevice(const ParsedName& device, 48 const GpuDeviceMetadata& metadata); 49 device_names()50 llvm::ArrayRef<ParsedName> device_names() const { return device_names_; } NumDevices()51 size_t NumDevices() const { return device_names_.size(); } 52 53 // Returns GPU device metadata if it is available, otherwise returns None. 54 llvm::Optional<GpuDeviceMetadata> GetGpuDeviceMetadata( 55 const ParsedName& device) const; 56 57 private: 58 llvm::SmallVector<ParsedName, 8> device_names_; 59 // TODO(ezhulenev): Add DenseMapInfo<ParsedName> specialization to be able to 60 // use ParsedName as a key in a DenseMap. 61 llvm::StringMap<GpuDeviceMetadata> gpu_metadata_; 62 }; 63 64 } // namespace TF 65 } // namespace mlir 66 67 #endif // TENSORFLOW_COMPILER_MLIR_TENSORFLOW_IR_TF_STRUCTS_H_ 68