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Message boards : Number crunching : Tasks vs WUs

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Message 65620 - Posted: 8 Nov 2016, 6:57:38 UTC

This might be a silly question, but in reviewing the Server Status page, I see the terms TASKS and WORKUNITS listed. What it the correlation or ratio between the 2?
TIA
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wb8ili
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Message 65621 - Posted: 8 Nov 2016, 13:32:23 UTC

A Workunit is a combination of a program (executable) and a particular set of data.

When a single Workunit is sent to one or many user's, these are called Tasks.

So, each Workunit can consist of many tasks.

Depending of the Project (Milkyway, etc.), when all of the completed tasks are returned, the Project might analyze all of the task results to determine what the "answer" is for the Workunit.

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Message 65622 - Posted: 8 Nov 2016, 17:49:24 UTC - in response to Message 65621.

A Workunit is a combination of a program (executable) and a particular set of data.

When a single Workunit is sent to one or many user's, these are called Tasks.

So, each Workunit can consist of many tasks.

Depending of the Project (Milkyway, etc.), when all of the completed tasks are returned, the Project might analyze all of the task results to determine what the "answer" is for the Workunit.


so, there is no set number such as 1000 WUs per Task?

wb8ili
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Message 65623 - Posted: 8 Nov 2016, 19:34:02 UTC

You have it backwards.

A task is a child of a Workunit. A Workunit can have many tasks but a task is only a member of (belongs to) one workunit.

Say I have a dataset I want to have analyzed. This a workunit. So I send the exact same dataset to 10 users (these are tasks).

Different projects create different number of tasks for each workunit. Climate Prediction only creates one task for each workunit. Other projects create a different number of tasks for each workunit. I don't think I have ever seen more than 20.

Hope this helps.

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Message 65624 - Posted: 9 Nov 2016, 4:30:08 UTC - in response to Message 65623.

Thanks w8 .. I got it now!


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