Message boards : Number crunching : UV reionization tasks wont finish

UV reionization tasks wont finish

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Message 1461 - Posted: 29 Aug 2016, 12:10:46 UTC

I have a few UV reionization tasks WUs running under Win64 that have been running 1.5 days, at 100% progress but won't finish. Let them run or kill them?

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Profile Krzysztof Piszczek - wspieram Polski projekt BOINC
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Message 1462 - Posted: 29 Aug 2016, 13:00:41 UTC - in response to Message 1461.  

Kill them...
Krzysztof 'krzyszp' Piszczek

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Message 1506 - Posted: 3 Sep 2016, 16:22:41 UTC

I've many compute errors with the UV tasks.
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Message 1507 - Posted: 3 Sep 2016, 23:26:50 UTC - in response to Message 1506.  

I've many compute errors with the UV tasks.

You may be confusing errors with server aborts (code 202). I have seen a lot of the aborts on the recent batch. But that just means that the server has cancelled them because they have already been returned by someone else, not because they errored out on your PC.
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Profile San-Fernando-Valley

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Message 1508 - Posted: 4 Sep 2016, 7:00:54 UTC

... why does the server distribute the same/identical WU to different users in the first place ... ?
Or am I missing out on something?

I've been getting (since yesterday) "computation errors" and "aborts" and "cancellations" for the ultraviolet reionization WU en masse (means: many)!

Something is going wrong on this project ??
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Message 1511 - Posted: 4 Sep 2016, 12:43:11 UTC - in response to Message 1508.  

... why does the server distribute the same/identical WU to different users in the first place ... ?
Or am I missing out on something?

I've been getting (since yesterday) "computation errors" and "aborts" and "cancellations" for the ultraviolet reionization WU en masse (means: many)!

Something is going wrong on this project ??


I think it has something to do with Krzyszp doing some manual intervention to get work flow going at a higher rate due to lots of complaints about not being able to get work.

A lot of work that had been sent out and returned was found to have not had a second work unit sent out a number of days later so validation was not getting done.

In the case of all the server cancellations (I also have had at least 22 today), it is due to 2 work units being sent out to get the original work unit to validate.
As only a quorum of 2 is needed to validate a work unit the first back gets credit and the second work unit is then cancelled as not needed.

It is unfortunate that BOINC calls these cancelled work units "errors" when they are not in fact errors at all.

That is my take on it anyway.

Conan
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Message 1512 - Posted: 4 Sep 2016, 13:20:50 UTC - in response to Message 1511.  

Exactly as you wrote.
Also, due to high number of UV tasks in progress server are bit delayed with validations at the moment.
Krzysztof 'krzyszp' Piszczek

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Message boards : Number crunching : UV reionization tasks wont finish