Powershell workflow nested inline script in parallel

Question

Powershell workflow nested inline script in parallel

sakuraime 2,351

Suppose I have a script in a workflow

foreach -parrallel ($item in $items)

{
    inlinescript
    {
        foreach -parrallel ($item2 in $item2s)
        {

            inlinesscript 
            {

            }

        }
     }
}

is it possible to perform the above nested inline parallel script ? are there any number of max parallel job limitation . ?

Anonymous

2021-06-08T09:19:35.94+00:00

Hi,
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Anonymous

2021-06-08T09:19:35.94+00:00

Hi,
Is there any update? Please feel free to let us know if more assistance is needed.
If the reply is helpful, please “Accept Answer” to help other community members find it more easily.

Answer 1

Anonymous

Hi,

ForEach -Parallel is valid only in a Windows PowerShell Workflow. I tested the script and the nested "foreach -parallel" didn't work.

https://learn.microsoft.com/en-us/powershell/module/psworkflow/about/about_foreach-parallel

Best Regards,
Ian Xue

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sakuraime 2,351 Reputation points

2021-06-01T12:33:09.167+00:00

thanks . and seems only 5 parallel job can run at the same time . how to increase it ?
Anonymous

2021-06-02T10:37:50.993+00:00

There seems to be no way to increase the number of processes. I tried to start 10 jobs but only five processes ran simultaneously. You can try Start-Job if you need to run more jobs in parallel.

https://devblogs.microsoft.com/scripting/parallel-processing-with-jobs-in-powershell/
sakuraime 2,351 Reputation points

2021-06-03T06:38:04.553+00:00

so you mean start-job in a foreach ?

foreach ()
{
start-job
}

the above will be in parallel ?
Anonymous

2021-06-03T07:03:22.09+00:00
Yes, this will create background jobs running in parallel. I created 20 jobs with this script

for($i=0; $i -lt 20;$i++){ Start-Job -Name "job$i" -ScriptBlock { Get-Date -Format "HH:mm:ss" Start-Sleep -Seconds 5 } }

and below is the output

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Powershell workflow nested inline script in parallel

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