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retsof
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Re: BOINC deadline change

Hmm, interesting. Since the BOINC Manager seems to determine that it needs to get more work based on its estimated to completion times, it's not impossible for BOINC to download work that won't complete in time.
Even on new version 5.4.9 I have noticed that BOINC will download a whole set of data when first connecting to a project, assuming that no other projects would need to run until the time you have specified to connect to the network again. I have tried to change the portion percentage before downloading, but it doesn't seem to care. It also ignores what may have been sitting there from other projects, and then whines that it is "overcommitted". Well, duh!

Subsequent downloads seem to honor the portion desired for that project.

I'm not sure what this deadline change will mean, but I have reduced my own cache length from 2.0 days to 1.0 days. Hopefully things will finish sooner, now that BOINC has overcommitted some of my stuff and pushed things out.

If worse comes to worse, I can also tinker with the project screen to cut off new tasks or suspend execution of some projects so that others will finish.
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[Edit 4 times, last edit by retsof at May 30, 2006 9:13:21 PM]
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Sekerob
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confused Re: BOINC deadline change

KeithHenry Wrote
This is an old problem, of course - and it will remain with us until someone works out how to predict the length of time a non-deterministic algorithm will take to complete...


hmmm, Set something up in an spreadsheet which has enough with 1the first 15 minutes to calculate correct total CPU and Clock run time and expected finish time on the clock within 6 or 7%, simply ignore the times BOINC is projecting.

Very occasionally i get a WU that takes ages. Just wonder how BOINC and the server responds to this real one:

04/11/2006 0:007:08:00:15 3,547 1

1. Will BOINC cease and desist
2. Will the Server give a "Too Late"

nerd
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depriens
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Re: BOINC deadline change

I have one very antique pc which runs between 4 and 12 hours a week. If I'm lucky, it will do one result a week, but when a workunit is larger, it will take at least 16 hours or more to complete.
Will there be any kind of difference in workunit length so that slower computers or computers which are not running very often get smaller workunits?
So I mean on my "normal" computers I sometimes have workunits which complete in less than one hour. Those would take maybe 3-4 hours to complete on an old machine. That would be better.
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Re: BOINC deadline change

Not at the moment, depriens. Future projects may have smaller work units, but I expect the target size will remain the same (ten hours on an average PC).

You have a few options. You can run that PC longer. You can concentrate on your other machines. You can invest in a faster machine. Do whatever suits you best. :-)

From an environmental viewpoint, it's actually quite good that people are discouraged from running ancient machines 24/7 when the same work can be done for a fraction of the energy.
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Re: BOINC deadline change



This is an old problem, of course - and it will remain with us until someone works out how to predict the length of time a non-deterministic algorithm will take to complete...



That's a bit like trying to nail jello to a tree.

I leave my cable modem connected when I travel away and even during severe electrical storms. My philosophy is that my ISP owns the modem and if it gets damaged during an electrical storm then they will pay to replace it, not me. I do own the router behind the modem so I worry about it but not the modem.

To protect my router I have a surge supressor between the cable modem and the incoming coax cable and a second surge supressor between the modem and the router. I also have a surge supressor and noise filter on the mains outlet. I think that's the only practical solution to the problem.
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knreed
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Re: BOINC deadline change


Very occasionally i get a WU that takes ages. Just wonder how BOINC and the server responds to this real one:

04/11/2006 0:007:08:00:15 3,547 1

1. Will BOINC cease and desist
2. Will the Server give a "Too Late"

nerd


Due to the relatively aggressive deadline and the desire to ensure fairness for things beyond a users control (such as the varying length of workunits) we will grant credit for workunits recieved up to a week past the deadline.

Once the deadline is missed for a workunit, the BOINC client will start displaying a message that says something to the effective 'Result xyz is passed its deadline and you may not recieve credit for it. You should consider aborting it'.

However - for a week past the deadline members will actually get credit (and depending on what is going on - the result may also still provide value for the science).
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Former Member
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Re: BOINC deadline change


Very occasionally i get a WU that takes ages. Just wonder how BOINC and the server responds to this real one:

04/11/2006 0:007:08:00:15 3,547 1

1. Will BOINC cease and desist
2. Will the Server give a "Too Late"

nerd


Due to the relatively aggressive deadline and the desire to ensure fairness for things beyond a users control (such as the varying length of workunits) we will grant credit for workunits recieved up to a week past the deadline.

Once the deadline is missed for a workunit, the BOINC client will start displaying a message that says something to the effective 'Result xyz is passed its deadline and you may not recieve credit for it. You should consider aborting it'.

However - for a week past the deadline members will actually get credit (and depending on what is going on - the result may also still provide value for the science).


Recently, I got a lot of WUs with only one week deadline. Does it mean that the allowance of 4 days for returning the results prior to re-issuing WUs is too short?
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Re: BOINC deadline change

Hello Windflowers,
The intention is to gradually shift the time for re-issuing a work unit to 1 week, then deactivate the special software routine and let the standard BOINC routine handle everything according to the 1-week deadline. This is all an experiment, to gather data on various effects. knreed collects the statistics from the servers and can track just what happens. So don't worry about it. Just follow the deadline.

Lawrence
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Sekerob
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Re: BOINC deadline change

knreed,

the news on the behind the scenes extra week is good..., we'd not be contributing to the quorum points determination, but that's aside.

I've got a 'relative' fast machine in perspective to times turned in by many others. Should 1 calendar week not be enough, the sample had actually 7:08 days, probably 8 or 9 days including shut down periods, it would cause for extra copies to go out without the real need.....trust your scripts consider issues like zero returns in e.g 5/6/7 days. Anyway, if something is taking a very long time, i check on the result status detail to see what times others are turning and on basis of that determine if it makes sense to continue (with bleeding heart on the lost hours).

It's a small concern, seem to get them once every 4/5 months and generate only half the points of a regular....whilst they need to be crunched, some will be tempted to kill them.
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Former Member
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Re: BOINC deadline change

Hello Windflowers,
The intention is to gradually shift the time for re-issuing a work unit to 1 week, then deactivate the special software routine and let the standard BOINC routine handle everything according to the 1-week deadline. This is all an experiment, to gather data on various effects. knreed collects the statistics from the servers and can track just what happens. So don't worry about it. Just follow the deadline.

Lawrence


Hi Lawrence,

I think the 1 week time prior to re-issuing WUs is more reasonable to suit most users.
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