Idle Processors, but not requesting WUs


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Questions and Answers : Web site : Idle Processors, but not requesting WUs

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Jon Rook
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Message 1287480 - Posted: 24 Sep 2012, 20:03:59 UTC

Hi,

I have a quad core processor that has recently (for the lase 3-4 days) stopped requesting Seti WUs. There have been no changes that I am aware of to my machine and I am still able to run two CUDA WUs concurrently. My preferences say to use all CPUs. If I do an Update, the activity log says that it is "not requesting new tasks".

I have run out of CPU WUs before, when the S@H website and servers are down for a few days, but whenever it came back up, it would fetch new tasks and resume. I am able to access the S@H site and there is no mention of a problem.

My SETI task is not suspended and it is set to request new tasks. Is this just a shortage of work units, or is there something else that is causing no new WUs? Anyone else seeing this?

Thanks in advance,
Jon

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Message 1287716 - Posted: 25 Sep 2012, 13:39:06 UTC - in response to Message 1287480.


This happens when you have several stuck uploads
(the exact number of stuck uploads that stop BOINC to ask for more tasks from a project depends on the number of CPUs (and GPUs?) you have.
The BOINC logic behind this: 'why ask for more tasks from a project that do not accept the results back?'
The upload problem is since a few days.
http://setiathome.berkeley.edu/forum_thread.php?id=69498
)

(You now have 'In progress (628)' tasks)


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John McLeod VII
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Message 1287872 - Posted: 26 Sep 2012, 4:05:42 UTC - in response to Message 1287716.


This happens when you have several stuck uploads
(the exact number of stuck uploads that stop BOINC to ask for more tasks from a project depends on the number of CPUs (and GPUs?) you have.
The BOINC logic behind this: 'why ask for more tasks from a project that do not accept the results back?'
The upload problem is since a few days.
http://setiathome.berkeley.edu/forum_thread.php?id=69498
)

(You now have 'In progress (628)' tasks)


Yes. 2 tasks that are not uploaded completely for each CPU or GPU in the system is the limit. This prevents a project that takes longer to transfer files than it takes to run from generating a (near) infinite set of work that needs to be uploaded.

There actually was a project that required a 100Mb/S link to avoid the problem. It also helps throttle work fetch for a project that is having trouble of some sort (bandwidth, slow upload server, ...) that may be temporary.
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Questions and Answers : Web site : Idle Processors, but not requesting WUs

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