REST Resource: projects.jobs

Resource: Job

Represents a training or prediction job.

JSON representation 
{
  "jobId": string,
  "createTime": string,
  "startTime": string,
  "endTime": string,
  "state": enum (State),
  "errorMessage": string,
  "labels": {
    string: string,
    ...
  },
  "etag": string,

  // Union field input can be only one of the following:
  "trainingInput": {
    object (TrainingInput)
  },
  "predictionInput": {
    object (PredictionInput)
  }
  // End of list of possible types for union field input.

  // Union field output can be only one of the following:
  "trainingOutput": {
    object (TrainingOutput)
  },
  "predictionOutput": {
    object (PredictionOutput)
  }
  // End of list of possible types for union field output.
}
Fields
jobId

string

Required. The user-specified id of the job.
createTime

string (Timestamp format)

Output only. When the job was created.

A timestamp in RFC3339 UTC "Zulu" format, accurate to nanoseconds. Example: "2014-10-02T15:01:23.045123456Z".
startTime

string (Timestamp format)

Output only. When the job processing was started.

A timestamp in RFC3339 UTC "Zulu" format, accurate to nanoseconds. Example: "2014-10-02T15:01:23.045123456Z".
endTime

string (Timestamp format)

Output only. When the job processing was completed.

A timestamp in RFC3339 UTC "Zulu" format, accurate to nanoseconds. Example: "2014-10-02T15:01:23.045123456Z".
state

enum (State)

Output only. The detailed state of a job.
errorMessage

string

Output only. The details of a failure or a cancellation.
labels

map (key: string, value: string)

Optional. One or more labels that you can add, to organize your jobs. Each label is a key-value pair, where both the key and the value are arbitrary strings that you supply. For more information, see the documentation on using labels.

An object containing a list of "key": value pairs. Example: { "name": "wrench", "mass": "1.3kg", "count": "3" }.
etag

string (bytes format)

etag is used for optimistic concurrency control as a way to help prevent simultaneous updates of a job from overwriting each other. It is strongly suggested that systems make use of the etag in the read-modify-write cycle to perform job updates in order to avoid race conditions: An etag is returned in the response to jobs.get, and systems are expected to put that etag in the request to jobs.patch to ensure that their change will be applied to the same version of the job.

A base64-encoded string.
Union field input. Required. Parameters to create a job. input can be only one of the following:
trainingInput

object (TrainingInput)

Input parameters to create a training job.
predictionInput

object (PredictionInput)

Input parameters to create a prediction job.
Union field output. Output only. The current result of the job. output can be only one of the following:
trainingOutput

object (TrainingOutput)

The current training job result.
predictionOutput

object (PredictionOutput)

The current prediction job result.

TrainingInput

Represents input parameters for a training job. When using the gcloud command to submit your training job, you can specify the input parameters as command-line arguments and/or in a YAML configuration file referenced from the --config command-line argument. For details, see the guide to submitting a training job.

JSON representation 
{
  "scaleTier": enum (ScaleTier),
  "masterType": string,
  "masterConfig": {
    object (ReplicaConfig)
  },
  "workerType": string,
  "workerConfig": {
    object (ReplicaConfig)
  },
  "parameterServerType": string,
  "parameterServerConfig": {
    object (ReplicaConfig)
  },
  "workerCount": string,
  "parameterServerCount": string,
  "packageUris": [
    string
  ],
  "pythonModule": string,
  "args": [
    string
  ],
  "hyperparameters": {
    object (HyperparameterSpec)
  },
  "region": string,
  "jobDir": string,
  "runtimeVersion": string,
  "pythonVersion": string
}
Fields
scaleTier

enum (ScaleTier)

Required. Specifies the machine types, the number of replicas for workers and parameter servers.
masterType

string

Optional. Specifies the type of virtual machine to use for your training job's master worker. You must specify this field when scaleTier is set to CUSTOM.

You can use certain Compute Engine machine types directly in this field. The following types are supported:

  • n1-standard-4
  • n1-standard-8
  • n1-standard-16
  • n1-standard-32
  • n1-standard-64
  • n1-standard-96
  • n1-highmem-2
  • n1-highmem-4
  • n1-highmem-8
  • n1-highmem-16
  • n1-highmem-32
  • n1-highmem-64
  • n1-highmem-96
  • n1-highcpu-16
  • n1-highcpu-32
  • n1-highcpu-64
  • n1-highcpu-96

Learn more about using Compute Engine machine types.

Alternatively, you can use the following legacy machine types:

  • standard
  • large_model
  • complex_model_s
  • complex_model_m
  • complex_model_l
  • standard_gpu
  • complex_model_m_gpu
  • complex_model_l_gpu
  • standard_p100
  • complex_model_m_p100
  • standard_v100
  • large_model_v100
  • complex_model_m_v100
  • complex_model_l_v100

Learn more about using legacy machine types.

Finally, if you want to use a TPU for training, specify cloud_tpu in this field. Learn more about the special configuration options for training with TPUs.
masterConfig

object (ReplicaConfig)

Optional. The configuration for your master worker.

You should only set masterConfig.acceleratorConfig if masterType is set to a Compute Engine machine type. Learn about restrictions on accelerator configurations for training.

Set masterConfig.imageUri only if you build a custom image. Only one of masterConfig.imageUri and runtimeVersion should be set. Learn more about configuring custom containers.
workerType

string

Optional. Specifies the type of virtual machine to use for your training job's worker nodes.

The supported values are the same as those described in the entry for masterType.

This value must be consistent with the category of machine type that masterType uses. In other words, both must be Compute Engine machine types or both must be legacy machine types.

If you use cloud_tpu for this value, see special instructions for configuring a custom TPU machine.

This value must be present when scaleTier is set to CUSTOM and workerCount is greater than zero.
workerConfig

object (ReplicaConfig)

Optional. The configuration for workers.

You should only set workerConfig.acceleratorConfig if workerType is set to a Compute Engine machine type. Learn about restrictions on accelerator configurations for training.

Set workerConfig.imageUri only if you build a custom image for your worker. If workerConfig.imageUri has not been set, AI Platform uses the value of masterConfig.imageUri. Learn more about configuring custom containers.
parameterServerType

string

Optional. Specifies the type of virtual machine to use for your training job's parameter server.

The supported values are the same as those described in the entry for masterType.

This value must be consistent with the category of machine type that masterType uses. In other words, both must be Compute Engine machine types or both must be legacy machine types.

This value must be present when scaleTier is set to CUSTOM and parameterServerCount is greater than zero.
parameterServerConfig

object (ReplicaConfig)

Optional. The configuration for parameter servers.

You should only set parameterServerConfig.acceleratorConfig if parameterServerConfigType is set to a Compute Engine machine type. Learn about restrictions on accelerator configurations for training.

Set parameterServerConfig.imageUri only if you build a custom image for your parameter server. If parameterServerConfig.imageUri has not been set, AI Platform uses the value of masterConfig.imageUri. Learn more about configuring custom containers.
workerCount

string (int64 format)

Optional. The number of worker replicas to use for the training job. Each replica in the cluster will be of the type specified in workerType.

This value can only be used when scaleTier is set to CUSTOM. If you set this value, you must also set workerType.

The default value is zero.
parameterServerCount

string (int64 format)

Optional. The number of parameter server replicas to use for the training job. Each replica in the cluster will be of the type specified in parameterServerType.

This value can only be used when scaleTier is set to CUSTOM.If you set this value, you must also set parameterServerType.

The default value is zero.
packageUris[]

string

Required. The Google Cloud Storage location of the packages with the training program and any additional dependencies. The maximum number of package URIs is 100.
pythonModule

string

Required. The Python module name to run after installing the packages.
args[]

string

Optional. Command line arguments to pass to the program.
hyperparameters

object (HyperparameterSpec)

Optional. The set of Hyperparameters to tune.
region

string

Required. The Google Compute Engine region to run the training job in. See the available regions for AI Platform services.
jobDir

string

Optional. A Google Cloud Storage path in which to store training outputs and other data needed for training. This path is passed to your TensorFlow program as the '--job-dir' command-line argument. The benefit of specifying this field is that Cloud ML validates the path for use in training.
runtimeVersion

string

Optional. The AI Platform runtime version to use for training. If not set, AI Platform uses the default stable version, 1.0. For more information, see the runtime version list and how to manage runtime versions.
pythonVersion

string

Optional. The version of Python used in training. If not set, the default version is '2.7'. Python '3.5' is available when runtimeVersion is set to '1.4' and above. Python '2.7' works with all supported runtime versions.

ScaleTier

A scale tier is an abstract representation of the resources Cloud ML will allocate to a training job. When selecting a scale tier for your training job, you should consider the size of your training dataset and the complexity of your model. As the tiers increase, virtual machines are added to handle your job, and the individual machines in the cluster generally have more memory and greater processing power than they do at lower tiers. The number of training units charged per hour of processing increases as tiers get more advanced. Refer to the pricing guide for more details. Note that in addition to incurring costs, your use of training resources is constrained by the quota policy.

Enums
BASIC A single worker instance. This tier is suitable for learning how to use Cloud ML, and for experimenting with new models using small datasets.
STANDARD_1 Many workers and a few parameter servers.
PREMIUM_1 A large number of workers with many parameter servers.
BASIC_GPU A single worker instance with a GPU.
BASIC_TPU A single worker instance with a Cloud TPU.
CUSTOM

The CUSTOM tier is not a set tier, but rather enables you to use your own cluster specification. When you use this tier, set values to configure your processing cluster according to these guidelines:

  • You must set TrainingInput.masterType to specify the type of machine to use for your master node. This is the only required setting.

  • You may set TrainingInput.workerCount to specify the number of workers to use. If you specify one or more workers, you must also set TrainingInput.workerType to specify the type of machine to use for your worker nodes.

  • You may set TrainingInput.parameterServerCount to specify the number of parameter servers to use. If you specify one or more parameter servers, you must also set TrainingInput.parameterServerType to specify the type of machine to use for your parameter servers.

Note that all of your workers must use the same machine type, which can be different from your parameter server type and master type. Your parameter servers must likewise use the same machine type, which can be different from your worker type and master type.

ReplicaConfig

Represents the configuration for a replica in a cluster.

JSON representation 
{
  "acceleratorConfig": {
    object (AcceleratorConfig)
  },
  "imageUri": string,
  "tpuTfVersion": string
}
Fields
acceleratorConfig

object (AcceleratorConfig)

Represents the type and number of accelerators used by the replica. Learn about restrictions on accelerator configurations for training.
imageUri

string

The Docker image to run on the replica. This image must be in Container Registry. Learn more about configuring custom containers.
tpuTfVersion

string

The AI Platform runtime version that includes a TensorFlow version matching the one used in the custom container. This field is required if the replica is a TPU worker that uses a custom container. Otherwise, do not specify this field. This must be a runtime version that currently supports training with TPUs.

Note that the version of TensorFlow included in a runtime version may differ from the numbering of the runtime version itself, because it may have a different patch version. In this field, you must specify the runtime version (TensorFlow minor version). For example, if your custom container runs TensorFlow 1.x.y, specify 1.x.

HyperparameterSpec

Represents a set of hyperparameters to optimize.

JSON representation 
{
  "goal": enum (GoalType),
  "params": [
    {
      object (ParameterSpec)
    }
  ],
  "maxTrials": number,
  "maxParallelTrials": number,
  "maxFailedTrials": number,
  "hyperparameterMetricTag": string,
  "resumePreviousJobId": string,
  "enableTrialEarlyStopping": boolean,
  "algorithm": enum (Algorithm)
}
Fields
goal

enum (GoalType)

Required. The type of goal to use for tuning. Available types are MAXIMIZE and MINIMIZE.

Defaults to MAXIMIZE.
params[]

object (ParameterSpec)

Required. The set of parameters to tune.
maxTrials

number

Optional. How many training trials should be attempted to optimize the specified hyperparameters.

Defaults to one.
maxParallelTrials

number

Optional. The number of training trials to run concurrently. You can reduce the time it takes to perform hyperparameter tuning by adding trials in parallel. However, each trail only benefits from the information gained in completed trials. That means that a trial does not get access to the results of trials running at the same time, which could reduce the quality of the overall optimization.

Each trial will use the same scale tier and machine types.

Defaults to one.
maxFailedTrials

number

Optional. The number of failed trials that need to be seen before failing the hyperparameter tuning job. You can specify this field to override the default failing criteria for AI Platform hyperparameter tuning jobs.

Defaults to zero, which means the service decides when a hyperparameter job should fail.
hyperparameterMetricTag

string

Optional. The TensorFlow summary tag name to use for optimizing trials. For current versions of TensorFlow, this tag name should exactly match what is shown in TensorBoard, including all scopes. For versions of TensorFlow prior to 0.12, this should be only the tag passed to tf.Summary. By default, "training/hptuning/metric" will be used.
resumePreviousJobId

string

Optional. The prior hyperparameter tuning job id that users hope to continue with. The job id will be used to find the corresponding vizier study guid and resume the study.
enableTrialEarlyStopping

boolean

Optional. Indicates if the hyperparameter tuning job enables auto trial early stopping.
algorithm

enum (Algorithm)

Optional. The search algorithm specified for the hyperparameter tuning job. Uses the default AI Platform hyperparameter tuning algorithm if unspecified.

GoalType

The available types of optimization goals.

Enums
GOAL_TYPE_UNSPECIFIED Goal Type will default to maximize.
MAXIMIZE Maximize the goal metric.
MINIMIZE Minimize the goal metric.

ParameterSpec

Represents a single hyperparameter to optimize.

JSON representation 
{
  "parameterName": string,
  "type": enum (ParameterType),
  "minValue": number,
  "maxValue": number,
  "categoricalValues": [
    string
  ],
  "discreteValues": [
    number
  ],
  "scaleType": enum (ScaleType)
}
Fields
parameterName

string

Required. The parameter name must be unique amongst all ParameterConfigs in a HyperparameterSpec message. E.g., "learning_rate".
type

enum (ParameterType)

Required. The type of the parameter.
minValue

number

Required if type is DOUBLE or INTEGER. This field should be unset if type is CATEGORICAL. This value should be integers if type is INTEGER.
maxValue

number

Required if type is DOUBLE or INTEGER. This field should be unset if type is CATEGORICAL. This value should be integers if type is INTEGER.
categoricalValues[]

string

Required if type is CATEGORICAL. The list of possible categories.
discreteValues[]

number

Required if type is DISCRETE. A list of feasible points. The list should be in strictly increasing order. For instance, this parameter might have possible settings of 1.5, 2.5, and 4.0. This list should not contain more than 1,000 values.
scaleType

enum (ScaleType)

Optional. How the parameter should be scaled to the hypercube. Leave unset for categorical parameters. Some kind of scaling is strongly recommended for real or integral parameters (e.g., UNIT_LINEAR_SCALE).

ParameterType

The type of the parameter.

Enums
PARAMETER_TYPE_UNSPECIFIED You must specify a valid type. Using this unspecified type will result in an error.
DOUBLE Type for real-valued parameters.
INTEGER Type for integral parameters.
CATEGORICAL The parameter is categorical, with a value chosen from the categories field.
DISCRETE The parameter is real valued, with a fixed set of feasible points. If type==DISCRETE, feasible_points must be provided, and {minValue, maxValue} will be ignored.

ScaleType

The type of scaling that should be applied to this parameter.

Enums
NONE By default, no scaling is applied.
UNIT_LINEAR_SCALE Scales the feasible space to (0, 1) linearly.
UNIT_LOG_SCALE Scales the feasible space logarithmically to (0, 1). The entire feasible space must be strictly positive.
UNIT_REVERSE_LOG_SCALE Scales the feasible space "reverse" logarithmically to (0, 1). The result is that values close to the top of the feasible space are spread out more than points near the bottom. The entire feasible space must be strictly positive.

Algorithm

The available search algorithms for hyperparameter tuning. Learn more about these algorithms.

Enums
ALGORITHM_UNSPECIFIED The default algorithm used by the hyperparameter tuning service. This is a Bayesian optimization algorithm.

PredictionInput

Represents input parameters for a prediction job.

JSON representation 
{
  "dataFormat": enum (DataFormat),
  "outputDataFormat": enum (DataFormat),
  "inputPaths": [
    string
  ],
  "maxWorkerCount": string,
  "region": string,
  "runtimeVersion": string,
  "batchSize": string,
  "signatureName": string,

  // Union field model_version can be only one of the following:
  "modelName": string,
  "versionName": string,
  "uri": string
  // End of list of possible types for union field model_version.
  "outputPath": string
}
Fields
dataFormat

enum (DataFormat)

Required. The format of the input data files.
outputDataFormat

enum (DataFormat)

Optional. Format of the output data files, defaults to JSON.
inputPaths[]

string

Required. The Cloud Storage location of the input data files. May contain wildcards.
maxWorkerCount

string (int64 format)

Optional. The maximum number of workers to be used for parallel processing. Defaults to 10 if not specified.
region

string

Required. The Google Compute Engine region to run the prediction job in. See the available regions for AI Platform services.
runtimeVersion

string

Optional. The AI Platform runtime version to use for this batch prediction. If not set, AI Platform will pick the runtime version used during the versions.create request for this model version, or choose the latest stable version when model version information is not available such as when the model is specified by uri.
batchSize

string (int64 format)

Optional. Number of records per batch, defaults to 64. The service will buffer batchSize number of records in memory before invoking one Tensorflow prediction call internally. So take the record size and memory available into consideration when setting this parameter.
signatureName

string

Optional. The name of the signature defined in the SavedModel to use for this job. Please refer to SavedModel for information about how to use signatures.

Defaults to DEFAULT_SERVING_SIGNATURE_DEF_KEY , which is "serving_default".
Union field model_version. Required. The model or the version to use for prediction. model_version can be only one of the following:
modelName

string

Use this field if you want to use the default version for the specified model. The string must use the following format:

"projects/YOUR_PROJECT/models/YOUR_MODEL"
versionName

string

Use this field if you want to specify a version of the model to use. The string is formatted the same way as model_version, with the addition of the version information:

"projects/YOUR_PROJECT/models/YOUR_MODEL/versions/YOUR_VERSION"
uri

string

Use this field if you want to specify a Google Cloud Storage path for the model to use.
outputPath

string

Required. The output Google Cloud Storage location.

DataFormat

The format used to separate data instances in the source and destination files.

Enums
DATA_FORMAT_UNSPECIFIED Unspecified format.
JSON Each line of the file is a JSON dictionary representing one record.
TEXT Deprecated. Use JSON instead.
TF_RECORD The source file is a TFRecord file. Currently available only for input data.
TF_RECORD_GZIP The source file is a GZIP-compressed TFRecord file. Currently available only for input data.
CSV Values are comma-separated rows, with keys in a separate file. Currently available only for output data.

State

Describes the job state.

Enums
STATE_UNSPECIFIED The job state is unspecified.
QUEUED The job has been just created and processing has not yet begun.
PREPARING The service is preparing to run the job.
RUNNING The job is in progress.
SUCCEEDED The job completed successfully.
FAILED The job failed. errorMessage should contain the details of the failure.
CANCELLING The job is being cancelled. errorMessage should describe the reason for the cancellation.
CANCELLED The job has been cancelled. errorMessage should describe the reason for the cancellation.

TrainingOutput

Represents results of a training job. Output only.

JSON representation 
{
  "completedTrialCount": string,
  "trials": [
    {
      object (HyperparameterOutput)
    }
  ],
  "consumedMLUnits": number,
  "isHyperparameterTuningJob": boolean,
  "isBuiltInAlgorithmJob": boolean,
  "builtInAlgorithmOutput": {
    object (BuiltInAlgorithmOutput)
  },
  "hyperparameterMetricTag": string
}
Fields
completedTrialCount

string (int64 format)

The number of hyperparameter tuning trials that completed successfully. Only set for hyperparameter tuning jobs.
trials[]

object (HyperparameterOutput)

Results for individual Hyperparameter trials. Only set for hyperparameter tuning jobs.
consumedMLUnits

number

The amount of ML units consumed by the job.
isHyperparameterTuningJob

boolean

Whether this job is a hyperparameter tuning job.
isBuiltInAlgorithmJob

boolean

Whether this job is a built-in Algorithm job.
builtInAlgorithmOutput

object (BuiltInAlgorithmOutput)

Details related to built-in algorithms jobs. Only set for built-in algorithms jobs.
hyperparameterMetricTag

string

The TensorFlow summary tag name used for optimizing hyperparameter tuning trials. See HyperparameterSpec.hyperparameterMetricTag for more information. Only set for hyperparameter tuning jobs.

HyperparameterOutput

Represents the result of a single hyperparameter tuning trial from a training job. The TrainingOutput object that is returned on successful completion of a training job with hyperparameter tuning includes a list of HyperparameterOutput objects, one for each successful trial.

JSON representation 
{
  "trialId": string,
  "hyperparameters": {
    string: string,
    ...
  },
  "startTime": string,
  "endTime": string,
  "state": enum (State),
  "finalMetric": {
    object (HyperparameterMetric)
  },
  "isTrialStoppedEarly": boolean,
  "allMetrics": [
    {
      object (HyperparameterMetric)
    }
  ],
  "builtInAlgorithmOutput": {
    object (BuiltInAlgorithmOutput)
  }
}
Fields
trialId

string

The trial id for these results.
hyperparameters

map (key: string, value: string)

The hyperparameters given to this trial.

An object containing a list of "key": value pairs. Example: { "name": "wrench", "mass": "1.3kg", "count": "3" }.
startTime

string (Timestamp format)

Output only. Start time for the trial.

A timestamp in RFC3339 UTC "Zulu" format, accurate to nanoseconds. Example: "2014-10-02T15:01:23.045123456Z".
endTime

string (Timestamp format)

Output only. End time for the trial.

A timestamp in RFC3339 UTC "Zulu" format, accurate to nanoseconds. Example: "2014-10-02T15:01:23.045123456Z".
state

enum (State)

Output only. The detailed state of the trial.
finalMetric

object (HyperparameterMetric)

The final objective metric seen for this trial.
isTrialStoppedEarly

boolean

True if the trial is stopped early.
allMetrics[]

object (HyperparameterMetric)

All recorded object metrics for this trial. This field is not currently populated.
builtInAlgorithmOutput

object (BuiltInAlgorithmOutput)

Details related to built-in algorithms jobs. Only set for trials of built-in algorithms jobs that have succeeded.

HyperparameterMetric

An observed value of a metric.

JSON representation 
{
  "trainingStep": string,
  "objectiveValue": number
}
Fields
trainingStep

string (int64 format)

The global training step for this metric.
objectiveValue

number

The objective value at this training step.

BuiltInAlgorithmOutput

Represents output related to a built-in algorithm Job.

JSON representation 
{
  "framework": string,
  "runtimeVersion": string,
  "pythonVersion": string,
  "modelPath": string
}
Fields
framework

string

Framework on which the built-in algorithm was trained.
runtimeVersion

string

AI Platform runtime version on which the built-in algorithm was trained.
pythonVersion

string

Python version on which the built-in algorithm was trained.
modelPath

string

The Cloud Storage path to the model/ directory where the training job saves the trained model. Only set for successful jobs that don't use hyperparameter tuning.

PredictionOutput

Represents results of a prediction job.

JSON representation 
{
  "outputPath": string,
  "predictionCount": string,
  "errorCount": string,
  "nodeHours": number
}
Fields
outputPath

string

The output Google Cloud Storage location provided at the job creation time.
predictionCount

string (int64 format)

The number of generated predictions.
errorCount

string (int64 format)

The number of data instances which resulted in errors.
nodeHours

number

Node hours used by the batch prediction job.

Methods

cancel

 Cancels a running job.

create

 Creates a training or a batch prediction job.

get

 Describes a job.

getIamPolicy

 Gets the access control policy for a resource.

list

 Lists the jobs in the project.

patch

 Updates a specific job resource.

setIamPolicy

 Sets the access control policy on the specified resource.

testIamPermissions

 Returns permissions that a caller has on the specified resource.
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