Querying Information About a Trial Using Hyperparameter Search

Function

This API is used to obtain the detailed results of a specific trial in a specified hyperparameter search job.

This API is used when you need to view the performance metrics and status of a specific trial in a hyperparameter search job. Before using this API, ensure that the hyperparameter search job exists and you have the required permission. After the query, the API returns the detailed results of the specified trial. If the hyperparameter search job does not exist, the specified trial does not exist, or you do not have the required permission, the API will return an error message.

Debugging

You can debug this API through automatic authentication in API Explorer or use the SDK sample code generated by API Explorer.

Authorization Information

Each account has all the permissions required to call all APIs, but IAM users must be assigned the required permissions.

If you are using role/policy-based authorization, see Permissions Policies and Supported Actions for details on the required permissions.

If you are using identity policy-based authorization, the following identity policy-based permissions are required.

Action	Access Level	Resource Type (*: required)	Condition Key	Alias	Dependencies
modelarts:trainJob:get	Read	trainJob *	g:ResourceTag/<tag-key>	-	-
modelarts:trainJob:get	Read	-	modelarts:poolType modelarts:poolId	-	-

URI

GET /v2/{project_id}/training-jobs/{training_job_id}/autosearch-trials/{trial_id}

**Table 1** Path Parameters
Parameter	Mandatory	Type	Description
project_id	Yes	String	Definition: Project ID. For details, see Obtaining a Project ID and Name. Constraints: N/A Range: The value can contain 1 to 64 characters. Only letters, digits, and hyphens (-) are allowed. Default Value: N/A
training_job_id	Yes	String	Definition: Training job ID. For details, see Obtaining Training Jobs. Constraints: N/A Range: N/A Default Value: N/A
trial_id	Yes	String	Definition: Trial ID of the hyperparameter search. Constraints: N/A Range: N/A Default Value: N/A

Request Parameters

None

Response Parameters

Status code: 200

**Table 2** Response body parameters
Parameter	Type	Description
header	Array of strings	Definition: Field information of a trial searched using hyperparameters.
data	Array<Array<String>>	Definition: Data list of a trial searched using hyperparameters.

Example Requests

The following shows how to query information about trial ae544174 of the job whose training_job_id is 5b60a667-1438-4eb5-9705-85b860e623dc.

GET https://{endpoint}/v2/{project_id}/training-jobs/5b60a667-1438-4eb5-9705-85b860e623dc/autosearch-trials/ae544174

Example Responses

Status code: 200

{
  "header" : [ "done", "pid", "best_reward", "time_total_s", "config", "acc", "loss", "trial_id", "training_iteration", "reward_attr" ],
  "data" : [ [ "False", "314", "0.0625", "19.477163314819336", "batch_size: 32\nlearning_rate: 0.05512301741232006\ntrial_index: 0\nparam/batch_size: 32\nparam/learning_rate: 0.05512301741232006", "0.0625", "tensor(0.0754, device='cuda:0', requires_grad=True)", "ae544174", "2", "0.0625" ], [ "True", "314", "0.0625", "19.477163314819336", "batch_size: 32\nlearning_rate: 0.05512301741232006\ntrial_index: 0\nparam/batch_size: 32\nparam/learning_rate: 0.05512301741232006", "0.0625", "tensor(0.0754, device='cuda:0', requires_grad=True)", "ae544174", "2", "0.0625" ] ]
}