82 lines
3.3 KiB
C++
82 lines
3.3 KiB
C++
/* Copyright 2018 The TensorFlow Authors. All Rights Reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==============================================================================*/
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#ifndef TENSORFLOW_COMPILER_TF2XLA_SIDE_EFFECT_UTIL_H_
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#define TENSORFLOW_COMPILER_TF2XLA_SIDE_EFFECT_UTIL_H_
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#include <vector>
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#include "tensorflow/core/graph/graph.h"
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namespace tensorflow {
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// Side-effecting nodes will have this attribute set. Its value is the list of
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// node names which this node has side-effect dependencies on.
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//
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// Nodes like HostCompute, SendToHost, RecvFromHost always have this attribute,
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// because they always have side-effect.
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// If and While nodes may or may not have this attribute, depending on whether
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// their bodies have side-effecting nodes.
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extern const char kXlaTokenInputNodesAttrName[];
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// This node name is used in kXlaTokenInputNodesAttrName attr to signal that a
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// node has side-effect dependency on current graph's token input.
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extern const char kXlaTokenArgNodeName[];
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// This node have XlaRecvAtHost/XlaSendFromHost in its associated functions.
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extern const char kXlaHasHostTransferAttrName[];
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// This attribute is the replica id for an outside compilation node node.
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extern const char kXlaReplicaIdAttrName[];
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// This node is a Placeholder node added for tail outside compilation.
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extern const char kXlaIsPlaceholderForTailOcAttrName[];
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// This attribute is the original node name for this node.
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extern const char kXlaOriginalOutsideCompilationNodeName[];
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// Sets device ordinal attribute for nodes with attribute
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// `kXlaHasHostTransferAttrName`.
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Status SetDeviceOrdinalAttributeForNode(Node* node, int device_ordinal);
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// Calculates side-effect dependencies for the graph's token output.
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// Returns a set of node names representing these dependencies.
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std::set<std::string> CalculateTokenInputsForOutputToken(const Graph& g);
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// Returns whether a graph contains side-effecting nodes.
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bool HasSideEffectingNodes(const Graph& g);
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// Parse the mapping from outside_compilation_subgraph name to core number,
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// which is specified in an attr as a list of strings
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// <subgraph_name>:<core_index>.
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Status ParseHostComputeCoreList(absl::Span<const string> list_from_attr,
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std::map<string, int>* host_compute_core);
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// XLA frontend attribute name which specifies TensorFlow rendezvous name.
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extern const char kXlaHostTransferRendezvousNameAttr[];
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// XLA frontend attribute name which specifies original host transfer type.
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// Value is XLA primitive type in lower case.
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extern const char kXlaHostTransferOriginalTypeAttr[];
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// XLA frontend attribute name which specifies whether a host transfer
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// instruction is lower bits for a splitted X64 host transfer. Value is "true"
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// or "false".
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extern const char kXlaHostTransferIsLowerBitsAttr[];
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} // namespace tensorflow
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#endif // TENSORFLOW_COMPILER_TF2XLA_SIDE_EFFECT_UTIL_H_
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