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Set-HpcTask

Updated: January 10, 2014

Set-HpcTask

Sets the properties for a specified task.

Syntax

Parameter Set: task
Set-HpcTask -Task <HpcTask> [-CommandLine <String> ] [-CustomProperties <String[]> ] [-Depend <String[]> ] [-End <Int32> ] [-Env <String[]> ] [-Exclusive <Boolean> ] [-FailJobOnFailure <Boolean> ] [-FailJobOnFailureCount <Int32> ] [-Increment <Int32> ] [-Name <String> ] [-NumCores <String> ] [-NumNodes <String> ] [-NumSockets <String> ] [-Parametric <Boolean> ] [-RequiredNodes <String[]> ] [-Rerunnable <Boolean> ] [-RunTime <String> ] [-Scheduler <String> ] [-Start <Int32> ] [-Stderr <String> ] [-Stdin <String> ] [-Stdout <String> ] [-Type <TaskType> ] [-ValidExitCodes <String> ] [-WorkDir <String> ] [ <CommonParameters>]

Parameter Set: id
Set-HpcTask -JobId <Int32> -TaskId <Int32> [-CommandLine <String> ] [-CustomProperties <String[]> ] [-Depend <String[]> ] [-End <Int32> ] [-Env <String[]> ] [-Exclusive <Boolean> ] [-FailJobOnFailure <Boolean> ] [-FailJobOnFailureCount <Int32> ] [-Increment <Int32> ] [-Name <String> ] [-NumCores <String> ] [-NumNodes <String> ] [-NumSockets <String> ] [-Parametric <Boolean> ] [-RequiredNodes <String[]> ] [-Rerunnable <Boolean> ] [-RunTime <String> ] [-Scheduler <String> ] [-Start <Int32> ] [-Stderr <String> ] [-Stdin <String> ] [-Stdout <String> ] [-Type <TaskType> ] [-ValidExitCodes <String> ] [-WorkDir <String> ] [ <CommonParameters>]




Detailed Description

Sets the properties for a specified task. You can specify a task by using the job identifier and task identifier for the task or by using an HpcTask object for the task. You can only change the properties for a task that is in the configuring state.

Parameters

-CommandLine<String>

Specifies the command line for the task, including the command or application name and any necessary arguments.

In tasks that include subtasks, you can use the asterisk (*) character as a placeholder for the parametric sweep index in Parametric Sweep tasks or for the subtask identifier in Service, Node Preparation, and Node Release tasks. You can include more than one asterisk to indicate the minimum number of positions to use when expressing the number of the index or subtask. This does not limit numbers that require more positions. This placeholder can be useful when defining the command or the input and output files for the task.

The HPC Job Scheduler Service interprets commands before it sends them to the compute nodes. To run a command that uses an asterisk, you can include the caret (^) as an escape character.


Aliases

none

Required?

false

Position?

named

Default Value

no default

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-CustomProperties<String[]>

Specifies a list of custom properties of the job. The list should have a format of variable_name1=value1[;variable_name2=value2[;...]]. Custom properties are case insensitive, and will reflect the case used when they were first defined.

This parameter was introduced in HPC Pack 2012. It is not available in previous versions.


Aliases

none

Required?

false

Position?

named

Default Value

no default

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-Depend<String[]>

Specifies a list of names for the tasks in the specified job on which the new task depends. The new task does not start until all the tasks in the list finish running.


Aliases

none

Required?

false

Position?

named

Default Value

no default

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-End<Int32>

Specifies the ending index for a parametric task. The ending index must be larger than the starting index. A parametric task runs the command multiple times, substituting the current index value for any asterisks (*) in the command line. The current index starts at the index that the Start parameter specifies, and increases by the value that the Increment parameter specifies each subsequent time the command runs. When the current index exceeds the ending index, the task stops running the command.


Aliases

none

Required?

false

Position?

named

Default Value

100

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-Env<String[]>

Specifies a list of environment variables to set in the run-time environment of the task and the values to assign to those environment variables. The list should have a format of variable_name1=value1[,variable_name2=value2[,...]]. To unset an environment variable, do not specify a value. For example, "variable_to_unset_name=".


Aliases

none

Required?

false

Position?

named

Default Value

no default

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-Exclusive<Boolean>

Specifies whether the job scheduler should ensure that no other task runs on the same node as this task while this task runs.

A non-zero value or $true indicates that the job scheduler should ensure that no other task runs on the same node as this task while this task runs. If you specify a non-zero value or $true value for the Exclusive parameter for the task, you must also specify a non-zero value or $true value for the Exclusive parameter for the job to which you are adding the task, or the task fails on submission.

A value of 0 or $false indicates that this task can share compute nodes with other tasks.


Aliases

none

Required?

false

Position?

named

Default Value

$false

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-FailJobOnFailure<Boolean>

Specifies whether the task is critical for the job, so that the job and its tasks stop running and the job is marked as failed if the task fails.

A nonzero value or $true indicates that the task is critical for the job, and that the job and its tasks stop running and the job is marked as failed if the task fails. A value of 0 or $false indicates that the task is not critical for the job, so that job continues to run the remaining tasks when the task that is not critical fails, and the job is marked as failed only when those remaining tasks finish.

If you specify a value for the FailJobOnFailureCount parameter, and do not specify a value for the FailJobOnFailure parameter, FailJobOnFailure is automatically set to $true.

To specify that a job and its tasks should stop running and that job should be marked as failed when any of the tasks in the job fail, use the FailOnTaskFailure parameter of the New-HpcJob or Set-HpcJob cmdlet.

This parameter was introduced in HPC Pack 2008 R2 with Service Pack 1 (SP1). It is not supported in previous versions.


Aliases

none

Required?

false

Position?

named

Default Value

the current value of the FailJobOnFailure property for the task if no value is specified for the FailJobOnFailureCount parameter, $true if a value is specified for FailJobOnFailureCount

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-FailJobOnFailureCount<Int32>

Specifies the number of subtasks of a critical parametric sweep or service task that must fail before the job and its tasks and subtask should stop running and the task and job should be marked as failed. You can specify a value from 1 through 1,000,000. If you specify more subtasks than the critical task contains, the job and its tasks and subtasks run to completion no matter how many subtasks fail.

If you specify a value for the FailJobOnFailureCount parameter, but also specify $false for the FailJobOnFailure parameter, FailJobOnFailureCount is set to 0. If you specify a value for FailJobOnFailureCount, and do not specify a value for FailJobOnFailure, FailJobOnFailure is automatically set to $true.

This parameter was introduced in HPC Pack 2008 R2 with Service Pack 1 (SP1). It is not supported in previous versions.


Aliases

none

Required?

false

Position?

named

Default Value

0 if the FailJobOnFailure parameter is $false, 1 if f the FailJobOnFailure parameter is $true

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-Increment<Int32>

Specifies the value to use when incrementing the index for a parametric task. This value must be a positive integer. A parametric task runs the command multiple times, substituting the current index value for any asterisks (*) in the command line. The current index starts at the index that the Start parameter specifies, and it increases by the value that the Increment parameter specifies each subsequent time the command runs. When the current index exceeds the index that the End parameter specifies, the task stops running the command.


Aliases

none

Required?

false

Position?

named

Default Value

1

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-JobId<Int32>

Specifies the job identifier of the job that contains the task that you want to modify. Use the Get-HpcJob cmdlet to get a list of jobs and their identifiers. You can use the JobId and TaskId parameters to specify a task, or you can use the Task parameter, but you cannot combine the Task parameter with the JobId or the TaskId parameter.


Aliases

none

Required?

true

Position?

named

Default Value

no default

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-Name<String>

Specifies a name to use for this task in command output and in the user interface. The maximum length for the name is 80 characters.


Aliases

none

Required?

false

Position?

named

Default Value

no default

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-NumCores<String>

Specifies the overall number of cores that the task requires across the HPC cluster, in the format [minimum-]maximum. The task runs on at least the minimum number of cores and on no more than the maximum. If you specify only one value, this cmdlet sets the minimum and maximum number of cores to that value. If you specify a minimum value that exceeds the total number of cores available across the cluster, an error occurs when you submit the task or the job that contains the task.

The minimum and maximum values can be only positive integers.

You cannot specify the NumCores parameter if you also specify the NumNodes or NumSockets parameter.


Aliases

none

Required?

false

Position?

named

Default Value

1-1

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-NumNodes<String>

Specifies the overall number of nodes that the task requires across the HPC cluster, in the format [minimum-]maximum. The task runs on at least the minimum number of nodes and on no more than the maximum. If you specify only one value, this cmdlet sets the minimum and maximum number of nodes to that value. If you specify a minimum value that exceeds the total number of nodes available across the cluster, an error occurs when you submit the task or the job that contains the task.

The minimum and maximum values can be only positive integers.

You cannot specify the NumNodes parameter if you also specify the NumCores or NumSockets parameter.


Aliases

none

Required?

false

Position?

named

Default Value

1-1

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-NumSockets<String>

Specifies the overall number of sockets that the task requires across the HPC cluster, in the format [minimum-]maximum. The task runs on at least the minimum number of sockets and on no more than the maximum. If you specify only one value, this cmdlet sets the minimum and maximum number of sockets to that value. If you specify a minimum value that exceeds the total number of sockets available across the cluster, an error occurs when you submit the task or the job that contains the task.

The minimum and maximum values can be only positive integers.

You cannot specify the NumSockets parameter if you also specify the NumCores or NumNodes parameter.


Aliases

none

Required?

false

Position?

named

Default Value

1-1

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-Parametric<Boolean>

Indicates that the new task is a parametric task. A parametric task runs the command multiple times, substituting the current index value for any asterisks (*) in the command line. If you specify this parameter, you should also specify values for the Start, End, and Increment values if you do not want to use the default values that define the index values for the parametric task.


Aliases

none

Required?

false

Position?

named

Default Value

not applicable

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-RequiredNodes<String[]>

Specifies a list of nodes on which the task must run. The job scheduler exclusively allocates all of the nodes in this list to run the task.


Aliases

none

Required?

false

Position?

named

Default Value

no default

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-Rerunnable<Boolean>

Specifies whether the job scheduler attempts to rerun the task if the task runs and fails.

A non-zero value or $true indicates that the job scheduler should attempt to rerun the task if the task runs and fails.

A value of 0 or $false indicates that the job scheduler should not attempt to rerun the task if the task runs and fails, and it should move the task to the failed state immediately.

The cluster administrator can configure the number of times that the job scheduler tries to rerun a task before moving the task to the failed state.


Aliases

none

Required?

false

Position?

named

Default Value

$true

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-RunTime<String>

Specifies the maximum amount of time that the task should run. After the task runs for this amount of time, the job scheduler cancels the task.

You specify the amount of time in a format of [[days:]hours:]minutes. You can also specify "infinite" to indicate that the task can run for an unlimited amount of time.

If you specify only one part of the days:hours:minutes format, the cmdlet interprets the specified value as the number of minutes. For example, 12 indicates 12 minutes. If you specify two parts of the format, the command interprets the left part as hours and the right part as minutes. For example, 10:30 indicates 10 hours and 30 minutes.

You can use one or more digits for each part of the format. The maximum value for each part is 2,147,483,647.


Aliases

none

Required?

false

Position?

named

Default Value

infinite

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-Scheduler<String>

Specifies the host name or IP address of the head node for the cluster that includes the task that you want to modify. The value must be a valid computer name or IP address. If you do not specify the Scheduler parameter, this cmdlet uses the scheduler on the head node that the CCP_SCHEDULER environment variable specifies. To set this environment variable, run the following cmdlet:

Set-Content Env:CCP_SCHEDULER <head_node_name>


Aliases

none

Required?

false

Position?

named

Default Value

%CCP_SCHEDULER%

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-Start<Int32>

Specifies the starting index for a parametric task. The starting index must be less than the ending index. A parametric task runs the command multiple times, substituting the current index value for any asterisks (*) in the command line. The current index starts at the starting index, and it increases by the value that the Increment parameter specifies each subsequent time the command runs. When the current index exceeds the ending index that the End parameter specifies, the task stops running the command.


Aliases

none

Required?

false

Position?

named

Default Value

1

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-Stderr<String>

Specifies the name for the file to which the task should redirect the standard error stream, including the full path or path relative to the working directory for the file if the task should not redirect the standard error stream to a file in the working directory. If you specify a path that does not exist, the task fails.

If you do not specify the Stderr parameter, the task stores up to 4 kilobytes (KB) of data in the job scheduler database that the Output property for the task specifies. Any output that exceeds 4 KB is lost.

The maximum length of value for this parameter is 160 characters.


Aliases

none

Required?

false

Position?

named

Default Value

see the parameter description

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-Stdin<String>

Specifies the name for the file from which the task should receive standard input. This includes the full path or a path that is relative to the working directory for the file if the task should not receive standard input from a file in the working directory. If you specify a file or path that does not exist, the task fails.

The maximum length of value for this parameter is 160 characters.


Aliases

none

Required?

false

Position?

named

Default Value

no default

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-Stdout<String>

Specifies the name for the file to which the task should redirect standard output. This includes the full path or a path that is relative to the working directory for the file if the task should not redirect standard output to a file in the working directory. If you specify a path that does not exist, the task fails.

If you do not specify the Stdout parameter, the task stores up to 4 kilobytes (KB) of data in the job scheduler database that the Output property for the task specifies. Any output that exceeds 4 KB is lost.

The maximum length of value for this parameter is 160 characters.


Aliases

none

Required?

false

Position?

named

Default Value

see the parameter description

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-Task<HpcTask>

Specifies an HpcTask object that corresponds to the task that you want to modify. Use the Get-HpcTask cmdlet to get an HpcTask object for a task. You can use the Task parameter to specify a task, or you can use the TaskId and JobId parameters together, but you cannot combine the Task parameter with either the JobId or the TaskId parameter.


Aliases

none

Required?

true

Position?

named

Default Value

no default

Accept Pipeline Input?

True (ByValue)

Accept Wildcard Characters?

false

-TaskId<Int32>

Specifies the task identifier of the task that you want to modify. Use the Get-HpcTask cmdlet to get a list of tasks in a job and their task identifiers. You can use the TaskId and JobId parameters to specify a task, or you can use the Task parameter, but you cannot combine the Task parameter with either the JobId or the TaskId parameter.


Aliases

none

Required?

true

Position?

named

Default Value

no default

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-Type<TaskType>

Specifies a type for the task, which defines how to run the command for the task.

This parameter was introduced in HPC Pack 2008 R2. It is not supported in previous versions.


Aliases

none

Required?

false

Position?

named

Default Value

Basic

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-ValidExitCodes<String>

Specifies the exit codes to be used for checking whether the task successfully exits. You can specify discrete integers and integer ranges separated by commas.

min and max may be used on a range, representing the start or end. For example, 0..max represents nonnegative integers.

This parameter was introduced in HPC Pack 2012. It is not available in previous versions.


Aliases

none

Required?

false

Position?

named

Default Value

0

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-WorkDir<String>

Specifies the working directory under which the task should run.

The maximum length of value for this parameter is 160 characters.


Aliases

none

Required?

false

Position?

named

Default Value

%USER_PROFILE%

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

<CommonParameters>

This cmdlet supports the common parameters: -Verbose, -Debug, -ErrorAction, -ErrorVariable, -OutBuffer, and -OutVariable. For more information, see about_CommonParameters

Inputs

The input type is the type of the objects that you can pipe to the cmdlet.

  • An HpcTask object.

Outputs

The output type is the type of the objects that the cmdlet emits.

  • An HpcTask object.

Examples

EXAMPLE 1

Changes the name of the second task of the job with an identifier of 10 to NewTaskName.


PS C:\>Set-HpcTask -JobId 10 -TaskId 2 -Name NewTaskName

EXAMPLE 2

Gets an HpcTask object for the third task of the job with an identifier of 12, and then sets the Rerunnable property of the task to false and the Stdout property to C:\logs\Task12_3.log.


PS C:\>Get-HpcTask -JobId 12 -TaskId 3 | Set-HpcTask -Rerunnable $false -WorkDir "C:\logs" -Stdout Task12_3.log

EXAMPLE 3

Specifies that the second task of job 96 is a critical task, so that the job and its tasks stop running and the job is marked as failed if the second task fails.


C:\PS>Set-HpcTask -JobId 96 -TaskId 2 -FailJobOnFailure $true -Command "MyApplication.exe"

EXAMPLE 4

Sets the third task of job 156 to be a critical parametric sweep task, and specifies that when 5 of the subtasks of the parametric sweep task fail, the job and its task and subtasks stop running and the job and parametric sweep task are marked as failed.


C:\PS>Set-HpcTask -JobId 156 -TaskId 3 -Type ParametricSweep -Start 1 -End 100 -FailJobOnFailure $true -FailJobOnFailureCount 5 -Command "MyApplication.exe *"

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