package tensorflow

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View/edit binary Protocol Buffers messages

Used in: NodeExecStats, TensorDescription

• int64 requested_bytes = 1

  Total number of bytes requested

• int64 allocated_bytes = 2

  Total number of bytes allocated if known

• string allocator_name = 3

  Name of the allocator used

• int64 allocation_id = 4

  Identifier of the allocated buffer if known

• bool has_single_reference = 5

  Set if this tensor only has one remaining reference

• uint64 ptr = 6

  Address of the allocation.

Used in: NodeExecStats

• string allocator_name = 1

• int64 total_bytes = 2

• int64 peak_bytes = 3

An asset file def for a single file or a set of sharded files with the same name.

Used in: MetaGraphDef

• optional TensorInfo tensor_info = 1

  The tensor to bind the asset filename to.

• string filename = 2

  The filename within an assets directory. Note: does not include the path prefix, i.e. directories. For an asset at /tmp/path/vocab.txt, the filename would be "vocab.txt".

Protocol buffer representing the value for an attr used to configure an Op. Comment indicates the corresponding attr type. Only the field matching the attr type may be filled.

Used in: FunctionDef, FunctionDef.Node, KernelDef.AttrConstraint, NameAttrList, NodeDef, OpDef.AttrDef

• oneof value

  • bytes s = 2

    "string"

  • int64 i = 3

    "int"

  • float f = 4

    "float"

  • bool b = 5

    "bool"

  • DataType type = 6

    "type"

  • TensorShapeProto shape = 7

    "shape"

  • TensorProto tensor = 8

    "tensor"

  • AttrValue.ListValue list = 1

    any "list(...)"

  • NameAttrList func = 10

    "func" represents a function. func.name is a function's name or a primitive op's name. func.attr.first is the name of an attr defined for that function. func.attr.second is the value for that attr in the instantiation.

  • string placeholder = 9

    This is a placeholder only used in nodes defined inside a function. It indicates the attr value will be supplied when the function is instantiated. For example, let us suppose a node "N" in function "FN". "N" has an attr "A" with value placeholder = "foo". When FN is instantiated with attr "foo" set to "bar", the instantiated node N's attr A will have been given the value "bar".

LINT.IfChange

Used in: AttrValue

• repeated bytes s = 2

  "list(string)"

• repeated int64 i = 3

  "list(int)"

• repeated float f = 4

  "list(float)"

• repeated bool b = 5

  "list(bool)"

• repeated DataType type = 6

  "list(type)"

• repeated TensorShapeProto shape = 7

  "list(shape)"

• repeated TensorProto tensor = 8

  "list(tensor)"

Matches DeviceAttributes

Used in: MachineConfiguration

• string name = 1

  Device name.

• string type = 2

  Device type, e.g. 'CPU' or 'GPU'.

• int64 memory_limit = 3

  Memory capacity in bytes.

• string physical_description = 4

  The physical description of this device.

Used in: TestResults

• repeated BenchmarkEntry entry = 1

Each unit test or benchmark in a test or benchmark run provides some set of information. Here we provide some reasonable keys one would expect to see, with optional key/value pairs for things we haven't considered. This BenchmarkEntry should be emitted by each unit test or benchmark reporter.

Used in: BenchmarkEntries

• string name = 1

  The name of the specific benchmark or test (e.g. BM_AdjustContrast_gpu_B_W_H)

• int64 iters = 2

  If a benchmark, how many iterations it was run for

• double cpu_time = 3

  Total cpu time used for all iterations (in seconds)

• double wall_time = 4

  Total wall time used for all iterations (in seconds)

• double throughput = 5

  Throughput (in MB/s)

• map<string, EntryValue> extras = 6

  Generic map from result key to value.

Used in: TestResults

• string mode = 1

  opt, dbg, etc

• repeated string cc_flags = 2

  CC compiler flags, if known

• repeated string opts = 3

  Bazel compilation options, if known

Describes the metadata related to a checkpointed tensor.

• DataType dtype = 1

  The tensor dtype and shape.

• optional TensorShapeProto shape = 2

• int32 shard_id = 3

  The binary content of the tensor lies in: File "shard_id": bytes [offset, offset + size).

• int64 offset = 4

• int64 size = 5

• fixed32 crc32c = 6

  The CRC32C checksum of the tensor bytes.

• repeated TensorSliceProto slices = 7

  Iff present, this entry represents a partitioned tensor. The previous fields are interpreted as follows: "dtype", "shape": describe the full tensor. "shard_id", "offset", "size", "crc32c": all IGNORED. These information for each slice can be looked up in their own BundleEntryProto, keyed by each "slice_name".

Special header that is associated with a bundle. TODO(zongheng,zhifengc): maybe in the future, we can add information about which binary produced this checkpoint, timestamp, etc. Sometime, these can be valuable debugging information. And if needed, these can be used as defensive information ensuring reader (binary version) of the checkpoint and the writer (binary version) must match within certain range, etc.

• int32 num_shards = 1

  Number of data files in the bundle.

• BundleHeaderProto.Endianness endianness = 2

• optional VersionDef version = 3

  Versioning of the tensor bundle format.

An enum indicating the endianness of the platform that produced this bundle. A bundle can only be read by a platform with matching endianness. Defaults to LITTLE, as most modern platforms are little-endian. Affects the binary tensor data bytes only, not the metadata in protobufs.

Used in: BundleHeaderProto

• LITTLE = 0

• BIG = 1

Used in: MachineConfiguration

• int64 num_cores = 1

• int64 num_cores_allowed = 2

• double mhz_per_cpu = 3

  How fast are these cpus?

• string cpu_info = 4

  Additional cpu information. For example, Intel Ivybridge with HyperThreading (24 cores) dL1:32KB dL2:256KB dL3:30MB

• string cpu_governor = 5

  What kind of cpu scaling is enabled on the host. Examples include "performance", "ondemand", "conservative", "mixed".

• map<string, int64> cache_size = 6

  Cache sizes (in bytes), e.g. "L2": 262144 (for 256KB)

Used as request type in: grpc.WorkerService.CleanupAll

• repeated string container = 1

  A list of container names. If 'container' is not empty, releases resoures in the given containers in all devices. If 'container' is empty, releases resources in the default container in all devices.

Used as response type in: grpc.WorkerService.CleanupAll

(message has no fields)

Used as request type in: grpc.WorkerService.CleanupGraph

• int64 step_id = 1

Used as response type in: grpc.WorkerService.CleanupGraph

(message has no fields)

Used as request type in: grpc.MasterService.CloseSession

• string session_handle = 1

  REQUIRED: session_handle must be returned by a CreateSession call to the same master service.

Used as response type in: grpc.MasterService.CloseSession

(message has no fields)

Defines a TensorFlow cluster as a set of jobs.

Used in: ServerDef

• repeated JobDef job = 1

  The jobs that comprise the cluster.

CollectionDef should cover most collections. To add a user-defined collection, do one of the following: 1. For simple data types, such as string, int, float: tf.add_to_collection("your_collection_name", your_simple_value) strings will be stored as bytes_list. 2. For Protobuf types, there are three ways to add them: 1) tf.add_to_collection("your_collection_name", your_proto.SerializeToString()) collection_def { key: "user_defined_bytes_collection" value { bytes_list { value: "queue_name: \"test_queue\"\n" } } } or 2) tf.add_to_collection("your_collection_name", str(your_proto)) collection_def { key: "user_defined_string_collection" value { bytes_list { value: "\n\ntest_queue" } } } or 3) any_buf = any_pb2.Any() tf.add_to_collection("your_collection_name", any_buf.Pack(your_proto)) collection_def { key: "user_defined_any_collection" value { any_list { value { type_url: "type.googleapis.com/tensorflow.QueueRunnerDef" value: "\n\ntest_queue" } } } } 3. For Python objects, implement to_proto() and from_proto(), and register them in the following manner: ops.register_proto_function("your_collection_name", proto_type, to_proto=YourPythonObject.to_proto, from_proto=YourPythonObject.from_proto) These functions will be invoked to serialize and de-serialize the collection. For example, ops.register_proto_function(ops.GraphKeys.GLOBAL_VARIABLES, proto_type=variable_pb2.VariableDef, to_proto=Variable.to_proto, from_proto=Variable.from_proto)

Used in: MetaGraphDef

• oneof kind

  • CollectionDef.NodeList node_list = 1

  • CollectionDef.BytesList bytes_list = 2

  • CollectionDef.Int64List int64_list = 3

  • CollectionDef.FloatList float_list = 4

  • CollectionDef.AnyList any_list = 5

AnyList is used for collecting Any protos.

Used in: CollectionDef

• repeated google.protobuf.Any value = 1

BytesList is used for collecting strings and serialized protobufs. For example: collection_def { key: "trainable_variables" value { bytes_list { value: "\n\017conv1/weights:0\022\024conv1/weights/Assign \032\024conv1/weights/read:0" value: "\n\016conv1/biases:0\022\023conv1/biases/Assign\032 \023conv1/biases/read:0" } } }

Used in: CollectionDef

• repeated bytes value = 1

FloatList is used for collecting float values.

Used in: CollectionDef

• repeated float value = 1

Int64List is used for collecting int, int64 and long values.

Used in: CollectionDef

• repeated int64 value = 1

NodeList is used for collecting nodes in graph. For example collection_def { key: "summaries" value { node_list { value: "input_producer/ScalarSummary:0" value: "shuffle_batch/ScalarSummary:0" value: "ImageSummary:0" } }

Used in: CollectionDef

• repeated string value = 1

Used in: TestResults

• oneof kind

  • int64 changelist = 1

  • string hash = 2

• string snapshot = 3

  Hash of intermediate change between hash/changelist and what was tested. Not used if the build is from a commit without modifications.

Protocol buffer representing a CondContext object.

• string context_name = 1

  Name of the context.

• string pred_name = 2

  Name of the pred tensor.

• string pivot_name = 3

  Name of the pivot tensor.

• int32 branch = 4

  Branch prediction. 0 or 1.

• optional ValuesDef values_def = 5

  Values and external values in control flow context.

Session configuration parameters. The system picks appropriate values for fields that are not set.

Used in: CreateSessionRequest, ServerDef

• map<string, int32> device_count = 1

  Map from device type name (e.g., "CPU" or "GPU" ) to maximum number of devices of that type to use. If a particular device type is not found in the map, the system picks an appropriate number.

• int32 intra_op_parallelism_threads = 2

  The execution of an individual op (for some op types) can be parallelized on a pool of intra_op_parallelism_threads. 0 means the system picks an appropriate number.

• int32 inter_op_parallelism_threads = 5

  Nodes that perform blocking operations are enqueued on a pool of inter_op_parallelism_threads available in each process. 0 means the system picks an appropriate number. Note that the first Session created in the process sets the number of threads for all future sessions unless use_per_session_threads is true or session_inter_op_thread_pool is configured.

• bool use_per_session_threads = 9

  If true, use a new set of threads for this session rather than the global pool of threads. Only supported by direct sessions. If false, use the global threads created by the first session, or the per-session thread pools configured by session_inter_op_thread_pool. This option is deprecated. The same effect can be achieved by setting session_inter_op_thread_pool to have one element, whose num_threads equals inter_op_parallelism_threads.

• repeated ThreadPoolOptionProto session_inter_op_thread_pool = 12

  This option is experimental - it may be replaced with a different mechanism in the future. The intended use is for when some session invocations need to run in a background pool limited to a small number of threads. Configures session thread pools. If this is configured, then RunOptions for a Run call can select the thread pool to use. If a pool's num_threads is 0, then inter_op_parallelism_threads is used.

• int32 placement_period = 3

  Assignment of Nodes to Devices is recomputed every placement_period steps until the system warms up (at which point the recomputation typically slows down automatically).

• repeated string device_filters = 4

  When any filters are present sessions will ignore all devices which do not match the filters. Each filter can be partially specified, e.g. "/job:ps" "/job:worker/replica:3", etc.

• optional GPUOptions gpu_options = 6

  Options that apply to all GPUs.

• bool allow_soft_placement = 7

  Whether soft placement is allowed. If allow_soft_placement is true, an op will be placed on CPU if 1. there's no GPU implementation for the OP or 2. no GPU devices are known or registered or 3. need to co-locate with reftype input(s) which are from CPU.

• bool log_device_placement = 8

  Whether device placements should be logged.

• optional GraphOptions graph_options = 10

  Options that apply to all graphs.

• int64 operation_timeout_in_ms = 11

  Global timeout for all blocking operations in this session. If non-zero, and not overridden on a per-operation basis, this value will be used as the deadline for all blocking operations.

Used in: RunGraphResponse, RunMetadata

• repeated CostGraphDef.Node node = 1

Used in: CostGraphDef

• string name = 1

  The name of the node. Names are globally unique.

• string device = 2

  The device of the node. Can be empty if the node is mapped to the default partition or partitioning hasn't been run yet.

• int32 id = 3

  The id of the node. Node ids are only unique inside a partition.

• repeated Node.InputInfo input_info = 4

• repeated Node.OutputInfo output_info = 5

• int64 temporary_memory_size = 6

  Temporary memory used by this node.

• int64 compute_cost = 9

  Estimate of the computational cost of this node.

• bool is_final = 7

  If true, the output is permanent: it can't be discarded, because this node is part of the "final output". Nodes may depend on final nodes.

• repeated int32 control_input = 8

  Ids of the control inputs for this node.

Inputs of this node. They must be executed before this node can be executed. An input is a particular output of another node, specified by the node id and the output index.

Used in: Node

• int32 preceding_node = 1

• int32 preceding_port = 2

Outputs of this node.

Used in: Node

• int64 size = 1

• int64 alias_input_port = 2

  If >= 0, the output is an alias of an input. Note that an alias input may itself be an alias. The algorithm will therefore need to follow those pointers.

• optional TensorShapeProto shape = 3

• DataType dtype = 4

Used as request type in: grpc.MasterService.CreateSession

• optional GraphDef graph_def = 1

  The initial graph definition.

• optional ConfigProto config = 2

  Configuration options.

Used as response type in: grpc.MasterService.CreateSession

• string session_handle = 1

  The session handle to be used in subsequent calls for the created session. The client must arrange to call CloseSession with this returned session handle to close the session.

• int64 graph_version = 2

  The initial version number for the graph, to be used in the next call to ExtendSession.

LINT.IfChange

Used in: AttrValue, AttrValue.ListValue, BundleEntryProto, CostGraphDef.Node.OutputInfo, OpDef.ArgDef, SavedSliceMeta, TensorDescription, TensorInfo, TensorProto

• DT_INVALID = 0

  Not a legal value for DataType. Used to indicate a DataType field has not been set.

• DT_FLOAT = 1

  Data types that all computation devices are expected to be capable to support.

• DT_DOUBLE = 2

• DT_INT32 = 3

• DT_UINT8 = 4

• DT_INT16 = 5

• DT_INT8 = 6

• DT_STRING = 7

• DT_COMPLEX64 = 8

  Single-precision complex

• DT_INT64 = 9

• DT_BOOL = 10

• DT_QINT8 = 11

  Quantized int8

• DT_QUINT8 = 12

  Quantized uint8

• DT_QINT32 = 13

  Quantized int32

• DT_BFLOAT16 = 14

  Float32 truncated to 16 bits. Only for cast ops.

• DT_QINT16 = 15

  Quantized int16

• DT_QUINT16 = 16

  Quantized uint16

• DT_UINT16 = 17

• DT_COMPLEX128 = 18

  Double-precision complex

• DT_HALF = 19

• DT_RESOURCE = 20

• DT_FLOAT_REF = 101

  Do not use! These are only for parameters. Every enum above should have a corresponding value below (verified by types_test).

• DT_DOUBLE_REF = 102

• DT_INT32_REF = 103

• DT_UINT8_REF = 104

• DT_INT16_REF = 105

• DT_INT8_REF = 106

• DT_STRING_REF = 107

• DT_COMPLEX64_REF = 108

• DT_INT64_REF = 109

• DT_BOOL_REF = 110

• DT_QINT8_REF = 111

• DT_QUINT8_REF = 112

• DT_QINT32_REF = 113

• DT_BFLOAT16_REF = 114

• DT_QINT16_REF = 115

• DT_QUINT16_REF = 116

• DT_UINT16_REF = 117

• DT_COMPLEX128_REF = 118

• DT_HALF_REF = 119

• DT_RESOURCE_REF = 120

EXPERIMENTAL. Option for watching a node.

Used in: RunOptions

• string node_name = 1

  Name of the node to watch.

• int32 output_slot = 2

  Output slot to watch. The semantics of output_slot == -1 is that the node is only watched for completion, but not for any output tensors. See NodeCompletionCallback in debug_gateway.h. TODO(cais): Implement this semantics.

• repeated string debug_ops = 3

  Name(s) of the debugging op(s). One or more than one probes on a tensor. e.g., {"DebugIdentity", "DebugNanCount"}

• repeated string debug_urls = 4

  URL(s) for debug targets(s). E.g., "file:///foo/tfdbg_dump", "grpc://localhost:11011" Each debug op listed in debug_ops will publish its output tensor (debug signal) to all URLs in debug_urls.

Used as request type in: grpc.WorkerService.DeregisterGraph

• string graph_handle = 1

  REQUIRED: graph_handle must be returned by a RegisterGraph call to the same WorkerService.

TODO(mrry): Optionally add summary stats for the graph.

Used as response type in: grpc.WorkerService.DeregisterGraph

(message has no fields)

Used in: GetStatusResponse, ListDevicesResponse

• string name = 1

  Fully specified name of the device within a cluster.

• string device_type = 2

  String representation of device_type.

• int64 memory_limit = 4

  Memory capacity of device in bytes.

• optional DeviceLocality locality = 5

  Platform-specific data about device that may be useful for supporting efficient data transfers.

• fixed64 incarnation = 6

  A device is assigned a global unique number each time it is initialized. "incarnation" should never be 0.

• string physical_device_desc = 7

  String representation of the physical device that this device maps to.

Used in: DeviceAttributes, RecvTensorRequest

• int32 bus_id = 1

  Optional bus locality of device. Default value of 0 means no specific locality. Specific localities are indexed from 1.

Used in: StepStats

• string device = 1

• repeated NodeExecStats node_stats = 2

Used in: BenchmarkEntry

• oneof kind

  • double double_value = 1

  • string string_value = 2

Protocol buffer representing an event that happened during the execution of a Brain model.

• double wall_time = 1

  Timestamp of the event.

• int64 step = 2

  Global step of the event.

• oneof what

  • string file_version = 3

    An event file was started, with the specified version. This is use to identify the contents of the record IO files easily. Current version is "brain.Event:2". All versions start with "brain.Event:".

  • bytes graph_def = 4

    An encoded version of a GraphDef.

  • Summary summary = 5

    A summary was generated.

  • LogMessage log_message = 6

    The user output a log message. Not all messages are logged, only ones generated via the Python tensorboard_logging module.

  • SessionLog session_log = 7

    The state of the session which can be used for restarting after crashes.

  • TaggedRunMetadata tagged_run_metadata = 8

    The metadata returned by running a session.run() call.

  • bytes meta_graph_def = 9

    An encoded version of a MetaGraphDef.

Options specific to the execution of a single step.

Used in: RunGraphRequest

• bool record_costs = 1

• bool record_timeline = 3

Used as request type in: grpc.MasterService.ExtendSession

• string session_handle = 1

  REQUIRED: session_handle must be returned by a CreateSession call to the same master service.

• optional GraphDef graph_def = 2

  REQUIRED: The nodes to be added to the session's graph. If any node has the same name as an existing node, the operation will fail with ILLEGAL_ARGUMENT.

• int64 current_graph_version = 3

  REQUIRED: The version number of the graph to be extended. This will be tested against the current server-side version number, and the operation will fail with FAILED_PRECONDITION if they do not match.

TODO(mrry): Return something about the operation?

Used as response type in: grpc.MasterService.ExtendSession

• int64 new_graph_version = 4

  The new version number for the extended graph, to be used in the next call to ExtendSession.

A function can be instantiated when the runtime can bind every attr with a value. When a GraphDef has a call to a function, it must have binding for every attr defined in the signature. TODO(zhifengc): * device spec, etc.

Used in: FunctionDefLibrary

• optional OpDef signature = 1

  The definition of the function's name, arguments, return values, attrs etc.

• map<string, AttrValue> attr = 5

  Attributes specific to this function definition.

• repeated FunctionDef.Node node = 2

  The body of the function.

  function.node.ret[*] are unique.

• repeated NodeDef node_def = 3

  The body of the function. Unlike the NodeDefs in a GraphDef, attrs may have values of type `placeholder` and the `input` field uses the "output" format above.

• map<string, string> ret = 4

  A mapping from the output arg names from `signature` to the outputs from `node_def` that should be returned by the function.

A node is a multi-value assignment: (ret[0], ret[1], ...) = func(arg[0], arg[1], ...) By convention, "func" is resolved by consulting with a user-defined library first. If not resolved, "func" is assumed to be a builtin op.

Used in: FunctionDef

• repeated string ret = 1

  This node produces multiple outputs. They are named ret[0], ret[1], ..., etc. REQUIRES: function.node.ret[*] are unique across all nodes. REQUIRES: ret.size == func/op def's number of output args.

• string op = 2

  The op/function name.

• repeated string arg = 3

  Arguments passed to this func/op. arg[i] must be either one of function.signature.input_args[*].name or one of function.node[*].ret[*]. REQUIRES: arg.size == func/op def's number of input args.

• repeated string dep = 4

  Control dependencies. dep[i] must be one of function.node[*].ret[*] or one of function.signature.input_args[*].name.

• map<string, AttrValue> attr = 5

  Attrs. 'attr' maps names defined by 'func's attr defs to attr values. attr values may have placeholders which are substituted recursively by concrete values when this node is instantiated. These placeholders must name an attr listed in the FunctionDef's signature.

A library is a set of named functions.

Used in: GraphDef

• repeated FunctionDef function = 1

• repeated GradientDef gradient = 2

• string model = 1

  e.g. "Tesla K40c"

• string uuid = 2

  Final entry in output of "nvidia-smi -L"

• string bus_id = 3

  e.g. "0000:04:00.0"

Used in: ConfigProto

• double per_process_gpu_memory_fraction = 1

  A value between 0 and 1 that indicates what fraction of the available GPU memory to pre-allocate for each process. 1 means to pre-allocate all of the GPU memory, 0.5 means the process allocates ~50% of the available GPU memory.

• string allocator_type = 2

  The type of GPU allocation strategy to use. Allowed values: "": The empty string (default) uses a system-chosen default which may change over time. "BFC": A "Best-fit with coalescing" algorithm, simplified from a version of dlmalloc.

• int64 deferred_deletion_bytes = 3

  Delay deletion of up to this many bytes to reduce the number of interactions with gpu driver code. If 0, the system chooses a reasonable default (several MBs).

• bool allow_growth = 4

  If true, the allocator does not pre-allocate the entire specified GPU memory region, instead starting small and growing as needed.

• string visible_device_list = 5

  A comma-separated list of GPU ids that determines the 'visible' to 'virtual' mapping of GPU devices. For example, if TensorFlow can see 8 GPU devices in the process, and one wanted to map visible GPU devices 5 and 3 as "/gpu:0", and "/gpu:1", then one would specify this field as "5,3". This field is similar in spirit to the CUDA_VISIBLE_DEVICES environment variable, except it applies to the visible GPU devices in the process. NOTE: The GPU driver provides the process with the visible GPUs in an order which is not guaranteed to have any correlation to the *physical* GPU id in the machine. This field is used for remapping "visible" to "virtual", which means this operates only after the process starts. Users are required to use vendor specific mechanisms (e.g., CUDA_VISIBLE_DEVICES) to control the physical to visible device mapping prior to invoking TensorFlow.

Used as request type in: grpc.WorkerService.GetStatus

(message has no fields)

Used as response type in: grpc.WorkerService.GetStatus

• repeated DeviceAttributes device_attributes = 1

GradientDef defines the gradient function of a function defined in a function library. A gradient function g (specified by gradient_func) for a function f (specified by function_name) must follow the following: The function 'f' must be a numerical function which takes N inputs and produces M outputs. Its gradient function 'g', which is a function taking N + M inputs and produces N outputs. I.e. if we have (y1, y2, ..., y_M) = f(x1, x2, ..., x_N), then, g is (dL/dx1, dL/dx2, ..., dL/dx_N) = g(x1, x2, ..., x_N, dL/dy1, dL/dy2, ..., dL/dy_M), where L is a scalar-value function of (x1, x2, ..., xN) (e.g., the loss function). dL/dx_i is the partial derivative of L with respect to x_i.

Used in: FunctionDefLibrary

• string function_name = 1

  The function name.

• string gradient_func = 2

  The gradient function's name.

Represents the graph of operations

Used in: CreateSessionRequest, ExtendSessionRequest, MetaGraphDef, RegisterGraphRequest, RunMetadata

• repeated NodeDef node = 1

• optional VersionDef versions = 4

  Compatibility versions of the graph. See core/public/version.h for version history. The GraphDef version is distinct from the TensorFlow version, and each release of TensorFlow will support a range of GraphDef versions.

• int32 version = 3

  Deprecated single version field; use versions above instead. Since all GraphDef changes before "versions" was introduced were forward compatible, this field is entirely ignored.

• optional FunctionDefLibrary library = 2

  EXPERIMENTAL. DO NOT USE OR DEPEND ON THIS YET. "library" provides user-defined functions. Naming: * library.function.name are in a flat namespace. NOTE: We may need to change it to be hierarchical to support different orgs. E.g., { "/google/nn", { ... }}, { "/google/vision", { ... }} { "/org_foo/module_bar", { ... }} map<string, FunctionDefLib> named_lib; * If node[i].op is the name of one function in "library", node[i] is deemed as a function call. Otherwise, node[i].op must be a primitive operation supported by the runtime. Function call semantics: * The callee may start execution as soon as some of its inputs are ready. The caller may want to use Tuple() mechanism to ensure all inputs are ready in the same time. * The consumer of return values may start executing as soon as the return values the consumer depends on are ready. The consumer may want to use Tuple() mechanism to ensure the consumer does not start until all return values of the callee function are ready.

Used in: ConfigProto, RegisterGraphRequest

• bool enable_recv_scheduling = 2

  If true, use control flow to schedule the activation of Recv nodes. (Currently ignored.)

• optional OptimizerOptions optimizer_options = 3

  Options controlling how graph is optimized.

• int64 build_cost_model = 4

  The number of steps to run before returning a cost model detailing the memory usage and performance of each node of the graph. 0 means no cost model.

• int64 build_cost_model_after = 9

  The number of steps to skip before collecting statistics for the cost model.

• bool infer_shapes = 5

  Annotate each Node with Op output shape data, to the extent it can be statically inferred.

• bool place_pruned_graph = 6

  Only place the subgraphs that are run, rather than the entire graph. This is useful for interactive graph building, where one might produce graphs that cannot be placed during the debugging process. In particular, it allows the client to continue work in a session after adding a node to a graph whose placement constraints are unsatisfiable.

• bool enable_bfloat16_sendrecv = 7

  If true, transfer float values between processes as bfloat16.

• int32 timeline_step = 8

  If > 0, record a timeline every this many steps. EXPERIMENTAL: This currently has no effect in MasterSession.

Serialization format for histogram module in core/lib/histogram/histogram.h

Used in: Summary.Value

• double min = 1

• double max = 2

• double num = 3

• double sum = 4

• double sum_squares = 5

• repeated double bucket_limit = 6

  Parallel arrays encoding the bucket boundaries and the bucket values. bucket(i) is the count for the bucket i. The range for a bucket is: i == 0: -DBL_MAX .. bucket_limit(0) i != 0: bucket_limit(i-1) .. bucket_limit(i)

• repeated double bucket = 7

Defines a single job in a TensorFlow cluster.

Used in: ClusterDef

• string name = 1

  The name of this job.

• map<int32, string> tasks = 2

  Mapping from task ID to "hostname:port" string. If the `name` field contains "worker", and the `tasks` map contains a mapping from 7 to "example.org:2222", then the device prefix "/job:worker/task:7" will be assigned to "example.org:2222". NOTE(mrry): Currently, only a dense task ID space starting at 0 is supported.

• string op = 1

  Must match the name of an Op.

• string device_type = 2

  Type of device this kernel runs on.

• repeated KernelDef.AttrConstraint constraint = 3

• repeated string host_memory_arg = 4

  Names of the Op's input_/output_args that reside in host memory instead of device memory.

• string label = 5

  This allows experimental kernels to be registered for an op that won't be used unless the user specifies a "_kernel" attr with value matching this.

Used in: KernelDef

• string name = 1

  Name of an attr from the Op.

• optional AttrValue allowed_values = 2

  A list of values that this kernel supports for this attr. Like OpDef.AttrDef.allowed_values, except for kernels instead of Ops.

Used in: LoggingResponse

• int64 step_id = 1

• optional StepStats step_stats = 2

Used as request type in: grpc.MasterService.ListDevices

(message has no fields)

Used as response type in: grpc.MasterService.ListDevices

• repeated DeviceAttributes local_device = 1

• repeated DeviceAttributes remote_device = 2

Protocol buffer used for logging messages to the events file.

Used in: Event

• LogMessage.Level level = 1

• string message = 2

Used in: LogMessage

• UNKNOWN = 0

• DEBUG = 10

• INFO = 20

• WARN = 30

• ERROR = 40

• FATAL = 50

Out-of-band request to begin or end logging, or to retrieve logs for particular steps.

Used as request type in: grpc.WorkerService.Logging

• bool rpc_logging = 1

  If true, RPC logging will be activated.

• bool clear = 2

  If true, discard any saved logging data (for all steps).

• repeated int64 fetch_step_id = 3

  When set, requests all saved log data pertaining to the step. Any log data retrieved is eliminated from the store and cannot be retrieved again.

Used as response type in: grpc.WorkerService.Logging

• repeated LabeledStepStats step = 1

Used in: TestResults

• string hostname = 1

  Host name of machine that ran the benchmark.

• string serial_identifier = 7

  Unique serial number of the machine.

• optional PlatformInfo platform_info = 2

  Additional platform information.

• optional CPUInfo cpu_info = 3

  CPU Information.

• repeated google.protobuf.Any device_info = 4

  Other devices that are attached and relevant (e.g. GPUInfo).

• repeated AvailableDeviceInfo available_device_info = 5

  Devices accessible to the test (e.g. as given by list_local_devices).

• optional MemoryInfo memory_info = 6

A directory of regions in a memmapped file.

• repeated MemmappedFileSystemDirectoryElement element = 1

A message that describes one region of memmapped file.

Used in: MemmappedFileSystemDirectory

• uint64 offset = 1

• string name = 2

Used in: MachineConfiguration

• int64 total = 1

  Total virtual memory in bytes

• int64 available = 2

  Immediately available memory in bytes

• int64 step_id = 1

  Process-unique step id.

• string operation = 2

  Name of the operation making the allocation.

• int64 num_bytes = 3

  Number of bytes in the allocation.

• uint64 ptr = 4

  Address of the allocation.

• int64 allocation_id = 5

  Id of the tensor buffer being allocated, used to match to a corresponding deallocation.

• string allocator_name = 6

  Name of the allocator used.

• int64 step_id = 1

  Process-unique step id.

• string operation = 2

  Name of the operation making the deallocation.

• int64 allocation_id = 3

  Id of the tensor buffer being deallocated, used to match to a corresponding allocation.

• string allocator_name = 4

  Name of the allocator used.

• bool deferred = 5

  True if the deallocation is queued and will be performed later, e.g. for GPU lazy freeing of buffers.

• int64 step_id = 1

  Process-unique step id.

• string handle = 2

  Handle describing the feeds and fetches of the step.

• int64 step_id = 1

  Process-unique step id.

• string kernel_name = 2

  Name of the kernel making the allocation as set in GraphDef, e.g., "affine2/weights/Assign".

• optional TensorDescription tensor = 3

  Allocated tensor details.

• int64 allocation_id = 1

  Id of the tensor buffer being deallocated, used to match to a corresponding allocation.

• string allocator_name = 2

  Name of the allocator used.

• int64 step_id = 1

  Process-unique step id.

• string kernel_name = 2

  Name of the kernel producing an output as set in GraphDef, e.g., "affine2/weights/Assign".

• int32 index = 3

  Index of the output being set.

• optional TensorDescription tensor = 4

  Output tensor details.

NOTE: This protocol buffer is evolving, and will go through revisions in the coming months. Protocol buffer containing the following which are necessary to restart training, run inference. It can be used to serialize/de-serialize memory objects necessary for running computation in a graph when crossing the process boundary. It can be used for long term storage of graphs, cross-language execution of graphs, etc. MetaInfoDef GraphDef SaverDef CollectionDef TensorInfo SignatureDef

Used in: SavedModel

• optional MetaGraphDef.MetaInfoDef meta_info_def = 1

• optional GraphDef graph_def = 2

  GraphDef.

• optional SaverDef saver_def = 3

  SaverDef.

• map<string, CollectionDef> collection_def = 4

  collection_def: Map from collection name to collections. See CollectionDef section for details.

• map<string, SignatureDef> signature_def = 5

  signature_def: Map from user supplied key for a signature to a single SignatureDef.

• repeated AssetFileDef asset_file_def = 6

  Asset file def to be used with the defined graph.

Meta information regarding the graph to be exported. To be used by users of this protocol buffer to encode information regarding their meta graph.

Used in: MetaGraphDef

• string meta_graph_version = 1

  Version string. Can be the name of the model and revision, steps this model has been trained to, etc.

• optional OpList stripped_op_list = 2

  A copy of the OpDefs used by the producer of this graph_def. Descriptions and Ops not used in graph_def are stripped out.

• optional google.protobuf.Any any_info = 3

  A serialized protobuf. Can be the time this meta graph is created, or modified, or name of the model.

• repeated string tags = 4

  User supplied tag(s) on the meta_graph and included graph_def. MetaGraphDefs should be tagged with their capabilities or use-cases. Examples: "train", "serve", "gpu", "tpu", etc. These tags enable loaders to access the MetaGraph(s) appropriate for a specific use-case or runtime environment.

A list of attr names and their values. The whole list is attached with a string name. E.g., MatMul[T=float].

Used in: AttrValue

• string name = 1

• map<string, AttrValue> attr = 2

A pair of tensor name and tensor values.

Used in: RunGraphRequest, RunGraphResponse

• string key = 1

  The name of the named tensor.

• optional TensorProto val = 2

  The value of the named tensor.

A pair of tensor name and tensor values.

Used in: RunStepRequest, RunStepResponse

• string name = 1

  Name of the tensor.

• optional TensorProto tensor = 2

  The client can populate a TensorProto using a tensorflow::Tensor`, or directly using the protobuf field accessors. The client specifies whether the returned tensor values should be filled tensor fields (float_val, int_val, etc.) or encoded in a compact form in tensor.tensor_content.

Used in: FunctionDef, GraphDef

• string name = 1

  The name given to this operator. Used for naming inputs, logging, visualization, etc. Unique within a single GraphDef. Must match the regexp "[A-Za-z0-9.][A-Za-z0-9_./]*".

• string op = 2

  The operation name. There may be custom parameters in attrs. Op names starting with an underscore are reserved for internal use.

• repeated string input = 3

  Each input is "node:src_output" with "node" being a string name and "src_output" indicating which output tensor to use from "node". If "src_output" is 0 the ":0" suffix can be omitted. Regular inputs may optionally be followed by control inputs that have the format "^node".

• string device = 4

  A (possibly partial) specification for the device on which this node should be placed. The expected syntax for this string is as follows: DEVICE_SPEC ::= COLOCATED_NODE | PARTIAL_SPEC COLOCATED_NODE ::= "@" NODE_NAME // See NodeDef.name above. PARTIAL_SPEC ::= ("/" CONSTRAINT) * CONSTRAINT ::= ("job:" JOB_NAME) | ("replica:" [1-9][0-9]*) | ("task:" [1-9][0-9]*) | ( ("gpu" | "cpu") ":" ([1-9][0-9]* | "*") ) Valid values for this string include: * "@other/node" (colocate with "other/node") * "/job:worker/replica:0/task:1/gpu:3" (full specification) * "/job:worker/gpu:3" (partial specification) * "" (no specification) If the constraints do not resolve to a single device (or if this field is empty or not present), the runtime will attempt to choose a device automatically.

• map<string, AttrValue> attr = 5

  Operation-specific graph-construction-time configuration. Note that this should include all attrs defined in the corresponding OpDef, including those with a value matching the default -- this allows the default to change and makes NodeDefs easier to interpret on their own. However, if an attr with a default is not specified in this list, the default will be used. The "names" (keys) must match the regexp "[a-z][a-z0-9_]+" (and one of the names from the corresponding OpDef's attr field). The values must have a type matching the corresponding OpDef attr's type field. TODO(josh11b): Add some examples here showing best practices.

Time/size stats recorded for a single execution of a graph node.

Used in: DeviceStepStats

• string node_name = 1

  TODO(tucker): Use some more compact form of node identity than the full string name. Either all processes should agree on a global id (cost_id?) for each node, or we should use a hash of the name.

• int64 all_start_micros = 2

• int64 op_start_rel_micros = 3

• int64 op_end_rel_micros = 4

• int64 all_end_rel_micros = 5

• repeated AllocatorMemoryUsed memory = 6

• repeated NodeOutput output = 7

• string timeline_label = 8

• int64 scheduled_micros = 9

• uint32 thread_id = 10

• repeated AllocationDescription referenced_tensor = 11

Output sizes recorded for a single execution of a graph node.

Used in: NodeExecStats

• int32 slot = 1

• optional TensorDescription tensor_description = 3

Defines an operation. A NodeDef in a GraphDef specifies an Op by using the "op" field which should match the name of a OpDef.

Used in: FunctionDef, OpList

• string name = 1

  Op names starting with an underscore are reserved for internal use. Names should be CamelCase and match the regexp "[A-Z][a-zA-Z0-9_]*".

• repeated OpDef.ArgDef input_arg = 2

  Description of the input(s).

• repeated OpDef.ArgDef output_arg = 3

  Description of the output(s).

• repeated OpDef.AttrDef attr = 4

• optional OpDeprecation deprecation = 8

  Optional deprecation based on GraphDef versions.

• string summary = 5

  One-line human-readable description of what the Op does.

• string description = 6

  Additional, longer human-readable description of what the Op does.

• bool is_commutative = 18

  True if the operation is commutative ("op(a,b) == op(b,a)" for all inputs)

• bool is_aggregate = 16

  If is_aggregate is true, then this operation accepts N >= 2 inputs and produces 1 output all of the same type. Should be associative and commutative, and produce output with the same shape as the input. The optimizer may replace an aggregate op taking input from multiple devices with a tree of aggregate ops that aggregate locally within each device (and possibly within groups of nearby devices) before communicating. TODO(josh11b): Implement that optimization.

  for things like add

• bool is_stateful = 17

  By default Ops may be moved between devices. Stateful ops should either not be moved, or should only be moved if that state can also be moved (e.g. via some sort of save / restore). Stateful ops are guaranteed to never be optimized away by Common Subexpression Elimination (CSE).

  for things like variables, queue

• bool allows_uninitialized_input = 19

  By default, all inputs to an Op must be initialized Tensors. Ops that may initialize tensors for the first time should set this field to true, to allow the Op to take an uninitialized Tensor as input.

  for Assign, etc.

For describing inputs and outputs.

Used in: OpDef

• string name = 1

  Name for the input/output. Should match the regexp "[a-z][a-z0-9_]*".

• string description = 2

  Human readable description.

• DataType type = 3

  Describes the type of one or more tensors that are accepted/produced by this input/output arg. The only legal combinations are: * For a single tensor: either the "type" field is set or the "type_attr" field is set to the name of an attr with type "type". * For a sequence of tensors with the same type: the "number_attr" field will be set to the name of an attr with type "int", and either the "type" or "type_attr" field will be set as for single tensors. * For a sequence of tensors, the "type_list_attr" field will be set to the name of an attr with type "list(type)".

• string type_attr = 4

  if specified, attr must have type "type"

• string number_attr = 5

  if specified, attr must have type "int"

• string type_list_attr = 6

  If specified, attr must have type "list(type)", and none of type, type_attr, and number_attr may be specified.

• bool is_ref = 16

  For inputs: if true, the inputs are required to be refs. By default, inputs can be either refs or non-refs. For outputs: if true, outputs are refs, otherwise they are not.

Description of the graph-construction-time configuration of this Op. That is to say, this describes the attr fields that will be specified in the NodeDef.

Used in: OpDef

• string name = 1

  A descriptive name for the argument. May be used, e.g. by the Python client, as a keyword argument name, and so should match the regexp "[a-z][a-z0-9_]+".

• string type = 2

  One of the type names from attr_value.proto ("string", "list(string)", "int", etc.).

• optional AttrValue default_value = 3

  A reasonable default for this attribute if the user does not supply a value. If not specified, the user must supply a value.

• string description = 4

  Human-readable description.

• bool has_minimum = 5

  For type == "int", this is a minimum value. For "list(___)" types, this is the minimum length.

• int64 minimum = 6

• optional AttrValue allowed_values = 7

  The set of allowed values. Has type that is the "list" version of the "type" field above (uses the "list" field of AttrValue). If type == "type" or "list(type)" above, then the "type" field of "allowed_values.list" has the set of allowed DataTypes. If type == "string" or "list(string)", then the "s" field of "allowed_values.list" has the set of allowed strings.

Information about version-dependent deprecation of an op

Used in: OpDef

• int32 version = 1

  First GraphDef version at which the op is disallowed.

• string explanation = 2

  Explanation of why it was deprecated and what to use instead.

A collection of OpDefs

Used in: MetaGraphDef.MetaInfoDef

• repeated OpDef op = 1

Options passed to the graph optimizer

Used in: GraphOptions

• bool do_common_subexpression_elimination = 1

  If true, optimize the graph using common subexpression elimination.

• bool do_constant_folding = 2

  If true, perform constant folding optimization on the graph.

• bool do_function_inlining = 4

  If true, perform function inlining on the graph.

• OptimizerOptions.Level opt_level = 3

Optimization level

Used in: OptimizerOptions

• L1 = 0

  L1 is the default level. Optimization performed at L1 : 1. Common subexpression elimination 2. Constant folding

• L0 = -1

  No optimizations

Used as request type in: grpc.MasterService.PartialRunSetup

• string session_handle = 1

  REQUIRED: session_handle must be returned by a CreateSession call to the same master service.

• repeated string feed = 2

  Tensors to be fed in future steps.

• repeated string fetch = 3

  Fetches. A list of tensor names. The caller expects a tensor to be returned for each fetch[i] (see RunStepResponse.tensor), for corresponding partial RunStepRequests. The order of specified fetches does not change the execution order.

• repeated string target = 4

  Target Nodes. A list of node names. The named nodes will be run in future steps, but their outputs will not be fetched.

Used as response type in: grpc.MasterService.PartialRunSetup

• string partial_run_handle = 1

  The unique handle corresponding to the ongoing partial run call setup by the invocation to PartialRunSetup. This handle may be passed to RunStepRequest to send and receive tensors for this partial run.

Used in: MachineConfiguration

• string bits = 1

  e.g. '64bit'

• string linkage = 2

  e.g. 'ELF'

• string machine = 3

  e.g. 'i386'

• string release = 4

  e.g. '3.13.0-76-generic'

• string system = 5

  e.g. 'Linux'

• string version = 6

  e.g. '#120-Ubuntu SMP Mon Jan 18 15:59:10 UTC 2016'

Protocol buffer representing a QueueRunner.

• string queue_name = 1

  Queue name.

• repeated string enqueue_op_name = 2

  A list of enqueue operations.

• string close_op_name = 3

  The operation to run to close the queue.

• string cancel_op_name = 4

  The operation to run to cancel the queue.

• repeated error.Code queue_closed_exception_types = 5

  A list of exception types considered to signal a safely closed queue if raised during enqueue operations.

For serializing and restoring the state of ReaderBase, see reader_base.h for details.

• int64 work_started = 1

• int64 work_finished = 2

• int64 num_records_produced = 3

• bytes current_work = 4

Used as request type in: grpc.WorkerService.RecvTensor

• int64 step_id = 1

  The step in which the tensor will be produced. REQUIRED: This must eventually correspond to the `step_id` passed into a RunGraph call on the same WorkerService.

• string rendezvous_key = 2

  A key that identifies the tensor to be received.

• bool dma_ok = 3

  If true, use an out-of-band DMA mechanism to transfer the received tensor.

• optional DeviceLocality client_locality = 4

  Optional information on client-side device locality.

• optional DeviceLocality server_locality = 5

  Optional information on server-side device locality.

Used as response type in: grpc.WorkerService.RecvTensor

• optional TensorProto tensor = 1

  The tensor as a proto.

• bool is_dead = 2

  If true, this tensor was the output of a dead node, and the content is invalid.

• int64 send_start_micros = 3

  The time at which tensor was available and started to be returned.

• optional google.protobuf.Any transport_options = 4

  Optional additional information about how to receive the tensor, in the event that `RecvTensorRequest.dma_ok` was true.

Used as request type in: grpc.WorkerService.RegisterGraph

• string session_handle = 1

  Subgraphs are scoped within one session.

• optional GraphDef graph_def = 2

  "graph_def" has the subgraph of nodes for this worker, with each node having its device_name filled in.

• bool has_control_flow = 3

  True iff the graph (before partitioning) contains control flow nodes. As of 01/11/2015, this is no longer set by clients.

• optional GraphOptions graph_options = 4

  Configuration options for the session in which this graph was created.

Used as response type in: grpc.WorkerService.RegisterGraph

• string graph_handle = 1

  If the registration succeeds, returns an opaque graph_handle to the master. The master calls RunGraph with graph_handle to compute different steps.

Used as request type in: grpc.MasterService.Reset

• repeated string container = 1

  A list of container names, which may be empty. If 'container' is not empty, releases resoures in the given containers in all devices. If 'container' is empty, releases resources in the default container in all devices.

Used as response type in: grpc.MasterService.Reset

(message has no fields)

Protocol buffer representing a handle to a tensorflow resource. Handles are not valid across executions, but can be serialized back and forth from within a single run.

Used in: TensorProto

• string device = 1

  Unique name for the device containing the resource.

• string container = 2

  Container in which this resource is placed.

• string name = 3

  Unique name of this resource.

• uint64 hash_code = 4

  Hash code for the type of the resource. Is only valid in the same device and in the same execution.

• string maybe_type_name = 5

  For debug-only, the name of the type pointed to by this handle, if available.

Run-specific items such as arguments to the test / benchmark.

Used in: TestResults

• repeated string argument = 1

Used as request type in: grpc.WorkerService.RunGraph

• string graph_handle = 1

  REQUIRED: graph_handle must be returned by a RegisterGraph call to the same WorkerService.

• int64 step_id = 2

  A unique ID to distinguish different runs of the same graph. The master generates a global unique `step_id` to distinguish different runs of the graph computation. Subgraphs communicate (e.g., send/recv ops) with each other using `step_id` to distinguish tensors generated by different runs.

• optional ExecutorOpts exec_opts = 5

  Options for this step.

• repeated NamedTensor send = 3

  Runs the graph. Sends the tensors in "send" into the graph before the run and fetches the keys into `RunGraphResponse.recv` after the run.

• repeated string recv_key = 4

• bool is_partial = 6

  True if the RunGraphRequest is a partial run request.

• bool is_last_partial_run = 7

  True if this is the last partial run request in a sequence of requests.

Used as response type in: grpc.WorkerService.RunGraph

• repeated NamedTensor recv = 1

  A list of tensors corresponding to those requested by `RunGraphRequest.recv_key`.

• optional StepStats step_stats = 2

  If the request asked for execution stats or cost graph, these are returned here.

• optional CostGraphDef cost_graph = 3

EXPERIMENTAL. Metadata output (i.e., non-Tensor) for a single Run() call.

Used in: RunStepResponse

• optional StepStats step_stats = 1

  Statistics traced for this step. Populated if tracing is turned on via the "RunOptions" proto. EXPERIMENTAL: The format and set of events may change in future versions.

• optional CostGraphDef cost_graph = 2

  The cost graph for the computation defined by the run call.

• repeated GraphDef partition_graphs = 3

  Graphs of the partitions executed by executors.

EXPERIMENTAL. Options for a single Run() call.

Used in: RunStepRequest

• RunOptions.TraceLevel trace_level = 1

• int64 timeout_in_ms = 2

  Time to wait for operation to complete in milliseconds.

• int32 inter_op_thread_pool = 3

  The thread pool to use, if session_inter_op_thread_pool is configured.

• repeated DebugTensorWatch debug_tensor_watch_opts = 4

  Debugging options

• bool output_partition_graphs = 5

  Whether the partition graph(s) executed by the executor(s) should be outputted via RunMetadata.

TODO(pbar) Turn this into a TraceOptions proto which allows tracing to be controlled in a more orthogonal manner?

Used in: RunOptions

• NO_TRACE = 0

• SOFTWARE_TRACE = 1

• HARDWARE_TRACE = 2

• FULL_TRACE = 3

Used as request type in: grpc.MasterService.RunStep

• string session_handle = 1

  REQUIRED: session_handle must be returned by a CreateSession call to the same master service.

• repeated NamedTensorProto feed = 2

  Tensors to be fed in the step. Each feed is a named tensor.

• repeated string fetch = 3

  Fetches. A list of tensor names. The caller expects a tensor to be returned for each fetch[i] (see RunStepResponse.tensor). The order of specified fetches does not change the execution order.

• repeated string target = 4

  Target Nodes. A list of node names. The named nodes will be run to but their outputs will not be fetched.

• optional RunOptions options = 5

  Options for the run call.

• string partial_run_handle = 6

  Partial run handle (optional). If specified, this will be a partial run execution, run up to the specified fetches.

Used as response type in: grpc.MasterService.RunStep

• repeated NamedTensorProto tensor = 1

  NOTE: The order of the returned tensors may or may not match the fetch order specified in RunStepRequest.

• optional RunMetadata metadata = 2

  Returned metadata if requested in the options.

Used in: VariableDef

• string full_name = 1

  Name of the full variable of which this is a slice.

• repeated int32 full_shape = 2

  Shape of the full variable.

• repeated int32 var_offset = 3

  Offset of this variable into the full variable.

• repeated int32 var_shape = 4

  Shape of this variable.

SavedModel is the high level serialization format for TensorFlow Models. See [todo: doc links, similar to session_bundle] for more information.

• int64 saved_model_schema_version = 1

  The schema version of the SavedModel instance. Used for versioning when making future changes to the specification/implementation. Initial value at release will be 1.

• repeated MetaGraphDef meta_graphs = 2

  One or more MetaGraphs.

Saved tensor slice: it stores the name of the tensors, the slice, and the raw data.

Used in: SavedTensorSlices

• string name = 1

  Name of the tensor that this slice belongs to. This must be identical to the name used to encode the key for this record.

• optional TensorSliceProto slice = 2

  Extent of the slice. Must have one entry for each of the dimension of the tensor that this slice belongs to.

• optional TensorProto data = 3

  The raw data of the slice is stored as a TensorProto. Only raw data are stored (we don't fill in fields such as dtype or tensor_shape).

Metadata describing the set of slices of the same tensor saved in a checkpoint file.

Used in: SavedTensorSliceMeta

• string name = 1

  Name of the tensor.

• optional TensorShapeProto shape = 2

  Shape of the tensor

• DataType type = 3

  Type of the tensor

• repeated TensorSliceProto slice = 4

  Explicit list of slices saved in the checkpoint file.

Metadata describing the set of tensor slices saved in a checkpoint file. It is always stored at the beginning of each checkpoint file.

Used in: SavedTensorSlices

• repeated SavedSliceMeta tensor = 1

  Each SavedSliceMeta describes the slices for one tensor.

• optional VersionDef versions = 2

  Compatibility version of this checkpoint. See core/public/version.h for version history.

Each record in a v3 checkpoint file is a serialized SavedTensorSlices message.

• optional SavedTensorSliceMeta meta = 1

  This is only present at the first item of each checkpoint file and serves as a table of contents, listing all the tensor slices saved in this file.

• optional SavedSlice data = 2

  This exists in all but the first item of each checkpoint file.

Protocol buffer representing the configuration of a Saver.

Used in: MetaGraphDef

• string filename_tensor_name = 1

  The name of the tensor in which to specify the filename when saving or restoring a model checkpoint.

• string save_tensor_name = 2

  The operation to run when saving a model checkpoint.

• string restore_op_name = 3

  The operation to run when restoring a model checkpoint.

• int32 max_to_keep = 4

  Maximum number of checkpoints to keep. If 0, no checkpoints are deleted.

• bool sharded = 5

  Shard the save files, one per device that has Variable nodes.

• float keep_checkpoint_every_n_hours = 6

  How often to keep an additional checkpoint. If not specified, only the last "max_to_keep" checkpoints are kept; if specified, in addition to keeping the last "max_to_keep" checkpoints, an additional checkpoint will be kept for every n hours of training.

• SaverDef.CheckpointFormatVersion version = 7

A version number that identifies a different on-disk checkpoint format. Usually, each subclass of BaseSaverBuilder works with a particular version/format. However, it is possible that the same builder may be upgraded to support a newer checkpoint format in the future.

Used in: SaverDef

• LEGACY = 0

  Internal legacy format.

• V1 = 1

  Current format: tf.Saver() which works with tensorflow::table::Table.

• V2 = 2

  Experimental format under development.

Defines the configuration of a single TensorFlow server.

• optional ClusterDef cluster = 1

  The cluster of which this server is a member.

• string job_name = 2

  The name of the job of which this server is a member. NOTE(mrry): The `cluster` field must contain a `JobDef` with a `name` field that matches this name.

• int32 task_index = 3

  The task index of this server in its job. NOTE: The `cluster` field must contain a `JobDef` with a matching `name` and a mapping in its `tasks` field for this index.

• optional ConfigProto default_session_config = 4

  The default configuration for sessions that run on this server.

• string protocol = 5

  The protocol to be used by this server. Acceptable values include: "grpc".

Protocol buffer used for logging session state.

Used in: Event

• SessionLog.SessionStatus status = 1

• string checkpoint_path = 2

  This checkpoint_path contains both the path and filename.

• string msg = 3

Used in: SessionLog

• STATUS_UNSPECIFIED = 0

• START = 1

• STOP = 2

• CHECKPOINT = 3

SignatureDef defines the signature of a computation supported by a TensorFlow graph. For example, a model with two loss computations, sharing a single input, might have the following signature_def map. Note that across the two SignatureDefs "loss_A" and "loss_B", the input key, output key, and method_name are identical, and will be used by system(s) that implement or rely upon this particular loss method. The output tensor names differ, demonstrating how different outputs can exist for the same method. signature_def { key: "loss_A" value { inputs { key: "input" value { name: "input:0" dtype: DT_STRING tensor_shape: ... } } outputs { key: "loss_output" value { name: "loss_output_A:0" dtype: DT_FLOAT tensor_shape: ... } } } ... method_name: "some/package/compute_loss" } signature_def { key: "loss_B" value { inputs { key: "input" value { name: "input:0" dtype: DT_STRING tensor_shape: ... } } outputs { key: "loss_output" value { name: "loss_output_B:0" dtype: DT_FLOAT tensor_shape: ... } } } ... method_name: "some/package/compute_loss" }

Used in: MetaGraphDef

• map<string, TensorInfo> inputs = 1

  Named input parameters.

• map<string, TensorInfo> outputs = 2

  Named output parameters.

• string method_name = 3

  Extensible method_name information enabling third-party users to mark a SignatureDef as supporting a particular method. This enables producers and consumers of SignatureDefs, e.g. a model definition library and a serving library to have a clear hand-off regarding the semantics of a computation. Note that multiple SignatureDefs in a single MetaGraphDef may have the same method_name. This is commonly used to support multi-headed computation, where a single graph computation may return multiple results.

Used in: LabeledStepStats, RunGraphResponse, RunMetadata

• repeated DeviceStepStats dev_stats = 1

A Summary is a set of named values to be displayed by the visualizer. Summaries are produced regularly during training, as controlled by the "summary_interval_secs" attribute of the training operation. Summaries are also produced at the end of an evaluation.

Used in: Event

• repeated Summary.Value value = 1

  Set of values for the summary.

Used in: Value

• float sample_rate = 1

  Sample rate of the audio in Hz.

• int64 num_channels = 2

  Number of channels of audio.

• int64 length_frames = 3

  Length of the audio in frames (samples per channel).

• bytes encoded_audio_string = 4

  Encoded audio data and its associated RFC 2045 content type (e.g. "audio/wav").

• string content_type = 5

Used in: Value

• int32 height = 1

  Dimensions of the image.

• int32 width = 2

• int32 colorspace = 3

  Valid colorspace values are 1 - grayscale 2 - grayscale + alpha 3 - RGB 4 - RGBA 5 - DIGITAL_YUV 6 - BGRA

• bytes encoded_image_string = 4

  Image data in encoded format. All image formats supported by image_codec::CoderUtil can be stored here.

Used in: Summary

• string node_name = 7

  Name of the node that output this summary; in general, the name of a TensorSummary node. If the node in question has multiple outputs, then a ":\d+" suffix will be appended, like "some_op:13". Might not be set for legacy summaries (i.e. those not using the tensor value field)

• string tag = 1

  Tag name for the data. Will only be used by legacy summaries (ie. those not using the tensor value field) For legacy summaries, will be used as the title of the graph in the visualizer. Tag is usually "op_name:value_name", where "op_name" itself can have structure to indicate grouping.

• oneof value

  Value associated with the tag.

  • float simple_value = 2

  • bytes obsolete_old_style_histogram = 3

  • Image image = 4

  • HistogramProto histo = 5

  • Audio audio = 6

  • TensorProto tensor = 8

Metadata associated with a series of Summary data

• string type_hint = 1

  Hint on how plugins should process the data in this series. Supported values include "scalar", "histogram", "image", "audio"

For logging the metadata output for a single session.run() call.

Used in: Event

• string tag = 1

  Tag name associated with this metadata.

• bytes run_metadata = 2

  Byte-encoded version of the `RunMetadata` proto in order to allow lazy deserialization.

Used in: MemoryLogTensorAllocation, MemoryLogTensorOutput, NodeOutput

• DataType dtype = 1

  Data type of tensor elements

• optional TensorShapeProto shape = 2

  Shape of the tensor.

• optional AllocationDescription allocation_description = 4

  Information about the size and allocator used for the data

Information about a Tensor necessary for feeding or retrieval.

Used in: AssetFileDef, SignatureDef

• string name = 1

• DataType dtype = 2

• optional TensorShapeProto tensor_shape = 3

Protocol buffer representing a tensor.

Used in: AttrValue, AttrValue.ListValue, NamedTensor, NamedTensorProto, RecvTensorResponse, SavedSlice, Summary.Value, serving.PredictRequest, serving.PredictResponse

• DataType dtype = 1

• optional TensorShapeProto tensor_shape = 2

  Shape of the tensor. TODO(touts): sort out the 0-rank issues.

• int32 version_number = 3

  Version number. In version 0, if the "repeated xxx" representations contain only one element, that element is repeated to fill the shape. This makes it easy to represent a constant Tensor with a single value.

• bytes tensor_content = 4

  Serialized content from Tensor::AsProtoTensorContent(). This representation can be used for all tensor types.

• repeated int32 half_val = 13

  DT_HALF. Note that since protobuf has no int16 type, we'll have some pointless zero padding for each value here.

• repeated float float_val = 5

  DT_FLOAT.

• repeated double double_val = 6

  DT_DOUBLE.

• repeated int32 int_val = 7

  DT_INT32, DT_INT16, DT_INT8, DT_UINT8.

• repeated bytes string_val = 8

  DT_STRING

• repeated float scomplex_val = 9

  DT_COMPLEX64. scomplex_val(2*i) and scomplex_val(2*i+1) are real and imaginary parts of i-th single precision complex.

• repeated int64 int64_val = 10

  DT_INT64

• repeated bool bool_val = 11

  DT_BOOL

• repeated double dcomplex_val = 12

  DT_COMPLEX128. dcomplex_val(2*i) and dcomplex_val(2*i+1) are real and imaginary parts of i-th double precision complex.

• repeated ResourceHandle resource_handle_val = 14

  DT_RESOURCE

Dimensions of a tensor.

Used in: AttrValue, AttrValue.ListValue, BundleEntryProto, CostGraphDef.Node.OutputInfo, SavedSliceMeta, TensorDescription, TensorInfo, TensorProto

• repeated TensorShapeProto.Dim dim = 2

  Dimensions of the tensor, such as {"input", 30}, {"output", 40} for a 30 x 40 2D tensor. If an entry has size -1, this corresponds to a dimension of unknown size. The names are optional. The order of entries in "dim" matters: It indicates the layout of the values in the tensor in-memory representation. The first entry in "dim" is the outermost dimension used to layout the values, the last entry is the innermost dimension. This matches the in-memory layout of RowMajor Eigen tensors. If "dim.size()" > 0, "unknown_rank" must be false.

• bool unknown_rank = 3

  If true, the number of dimensions in the shape is unknown. If true, "dim.size()" must be 0.

One dimension of the tensor.

Used in: TensorShapeProto

• int64 size = 1

  Size of the tensor in that dimension. This value must be >= -1, but values of -1 are reserved for "unknown" shapes (values of -1 mean "unknown" dimension). Certain wrappers that work with TensorShapeProto may fail at runtime when deserializing a TensorShapeProto containing a dim value of -1.

• string name = 2

  Optional name of the tensor dimension.

Can only be interpreted if you know the corresponding TensorShape.

Used in: BundleEntryProto, SavedSlice, SavedSliceMeta

• repeated TensorSliceProto.Extent extent = 1

  Extent of the slice in all tensor dimensions. Must have one entry for each of the dimension of the tensor that this slice belongs to. The order of sizes is the same as the order of dimensions in the TensorShape.

Extent of the slice in one dimension.

Either both or no attributes must be set. When no attribute is set means: All data in that dimension.

Used in: TensorSliceProto

• int64 start = 1

  Start index of the slice, starting at 0.

• oneof has_length

  Length of the slice: if the length is missing or -1 we will interpret this as "everything in this dimension". We use "oneof" to preserve information about whether the length is present without changing the serialization format from the prior proto2 version of this proto.

  • int64 length = 2

The output of one benchmark / test run. Each run contains a list of tests or benchmarks, stored as BenchmarkEntry messages. This message should be emitted by the reporter (which runs the test / BM in a subprocess and then reads the emitted BenchmarkEntry messages; usually from a serialized json file, finally collecting them along with additional information about the test run.

• string target = 1

  The target of the run, e.g.: //tensorflow/core:kernels_adjust_contrast_op_benchmark_test

• optional BenchmarkEntries entries = 2

  The list of tests or benchmarks in this run.

• optional BuildConfiguration build_configuration = 3

  The configuration of the build (compiled opt? with cuda? any copts?)

• optional CommitId commit_id = 4

  The commit id (git hash or changelist)

• int64 start_time = 5

  The time the run started (in seconds of UTC time since Unix epoch)

• double run_time = 6

  The amount of time the total run took (wall time in seconds)

• optional MachineConfiguration machine_configuration = 7

  Machine-specific parameters (Platform and CPU info)

• optional RunConfiguration run_configuration = 8

  Run-specific parameters (arguments, etc)

• string name = 9

  Benchmark target identifier.

Used in: ConfigProto

• int32 num_threads = 1

  The number of threads in the pool. 0 means the system picks a value based on where this option proto is used (see the declaration of the specific field for more info).

Used in: TracingRequest

• double duration = 1

  Length of the trace to be taken, in seconds.

• bool use_step_profiler = 2

  If true, capture step profile locally in each worker. Currently unimplemented.

• bool use_kernel_profiler = 3

  If true, capture kernel events from each worker.

• bool use_extended_profiler = 4

  If true, capture extended profiling events from TensorFlow process.

• bool use_gpu_profiler = 5

  If true, capture GPU profiling events locally on each machine. Currently unimplemented.

• bool use_sample_profiler = 6

  If true, collect sampled profile events. Currently unimplemented.

Out-of-band request to configure distributed tracing.

Used as request type in: grpc.WorkerService.Tracing

• optional TraceOpts options = 1

Used as response type in: grpc.WorkerService.Tracing

(message has no fields)

Protocol buffer representing the values in ControlFlowContext.

Used in: CondContextDef, WhileContextDef

• repeated string values = 1

  Value names that have been seen in this context.

• map<string, string> external_values = 2

  Value names referenced by but external to this context.

Protocol buffer representing a Variable.

• string variable_name = 1

  Name of the variable tensor.

• string initializer_name = 2

  Name of the initializer op.

• string snapshot_name = 3

  Name of the snapshot tensor.

• optional SaveSliceInfoDef save_slice_info_def = 4

  Support for saving variables as slices of a larger variable.

Version information for a piece of serialized data There are different types of versions for each type of data (GraphDef, etc.), but they all have the same common shape described here. Each consumer has "consumer" and "min_producer" versions (specified elsewhere). A consumer is allowed to consume this data if producer >= min_producer consumer >= min_consumer consumer not in bad_consumers

Used in: BundleHeaderProto, GraphDef, SavedTensorSliceMeta

• int32 producer = 1

  The version of the code that produced this data.

• int32 min_consumer = 2

  Any consumer below this version is not allowed to consume this data.

• repeated int32 bad_consumers = 3

  Specific consumer versions which are disallowed (e.g. due to bugs).

Protocol buffer representing a WhileContext object.

• string context_name = 1

  Name of the context.

• int32 parallel_iterations = 2

  The number of iterations allowed to run in parallel.

• bool back_prop = 3

  Whether backprop is enabled for this while loop.

• bool swap_memory = 4

  Whether GPU-CPU memory swap is enabled for this loop.

• string pivot_name = 5

  Name of the pivot tensor.

• string pivot_for_pred_name = 6

  Name of the pivot_for_pred tensor.

• string pivot_for_body_name = 7

  Name of the pivot_for_body tensor.

• repeated string loop_exit_names = 8

  List of names for exit tensors.

• optional ValuesDef values_def = 9

  Values and external values in control flow context.