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Tyler Project administrator Volunteer tester Send message
Joined: 4 Dec 12 Posts: 1078 ID: 183129 Credit: 1,376,122,338 RAC: 6,351
                         
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Today when I got some Sophie German LLR Tasks, I got over 1280 tasks... I mean sure, they complete in ~12 minutes (Max 14 minutes) each running 4 at a time, but almost 1300 tasks is way too many. I have my preferences set to always connected to internet, and maintain work for an additional 0 days. Why am I getting so many darn tasks?
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275*2^3585539+1 is prime!!! (1079358 digits)
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Michael Goetz Volunteer moderator Project administrator
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Joined: 21 Jan 10 Posts: 13954 ID: 53948 Credit: 392,336,518 RAC: 171,309
                               
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Today when I got some Sophie German LLR Tasks, I got over 1280 tasks... I mean sure, they complete in ~12 minutes (Max 14 minutes) each running 4 at a time, but almost 1300 tasks is way too many. I have my preferences set to always connected to internet, and maintain work for an additional 0 days. Why am I getting so many darn tasks?
It's really hard to say, but I can guess it might have something to do with us trying to get more accurate time estimates out of boinc. We've adjusted some values to make them more realistic, but your computer may have previously adjusted its timing estimates based on the previous setting. Therefore, it may think these tasks are a lot smaller than the previous ones.
What will happen is than in 12 minutes, when the first task completes, your computer will realize that these tasks will take a long time, and will realize that many of them won't complete by the deadline. It won't download any more tasks. When the deadline passes, all tasks that haven't been started yet will automatically be cancelled, while those that are still in progress will be completed and returned to the server (and you'll get credit for them.) In other words, no manual action is required on your part.
The maximum number of tasks the server will send to you is 320 tasks per core. 320 x 4 cores is 1280.
Now that explanation is all well and good, as long as your computer ASKED for more work. You've got both work buffer settings at zero, so it shouldn't be asking for much work at all. That's perplexing. I don't have an answer for that.
Assuming the DCF on your computer is 1.00, based on the fpops size set in those workunits and your benchmarks, BOINC should be estimating just under 14 minutes for each task.
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Tyler Project administrator Volunteer tester Send message
Joined: 4 Dec 12 Posts: 1078 ID: 183129 Credit: 1,376,122,338 RAC: 6,351
                         
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Thanks for the info. My Task duration correction factor is 0.548348
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275*2^3585539+1 is prime!!! (1079358 digits)
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Tyler Project administrator Volunteer tester Send message
Joined: 4 Dec 12 Posts: 1078 ID: 183129 Credit: 1,376,122,338 RAC: 6,351
                         
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Now my Task duration correction factor is 0.656023... What does this mean?
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275*2^3585539+1 is prime!!! (1079358 digits)
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Tyler Project administrator Volunteer tester Send message
Joined: 4 Dec 12 Posts: 1078 ID: 183129 Credit: 1,376,122,338 RAC: 6,351
                         
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I'm still getting new tasks when I upload new ones... Always brings my task count up to 1280.
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275*2^3585539+1 is prime!!! (1079358 digits)
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Michael Goetz Volunteer moderator Project administrator
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Joined: 21 Jan 10 Posts: 13954 ID: 53948 Credit: 392,336,518 RAC: 171,309
                               
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I'm still getting new tasks when I upload new ones... Always brings my task count up to 1280.
I have no explanation for that -- your computer shouldn't be requesting work.
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Tyler Project administrator Volunteer tester Send message
Joined: 4 Dec 12 Posts: 1078 ID: 183129 Credit: 1,376,122,338 RAC: 6,351
                         
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:/ And what does the Task Duration Correction Factor thing mean? It's like at .5
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275*2^3585539+1 is prime!!! (1079358 digits)
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Michael Goetz Volunteer moderator Project administrator
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Joined: 21 Jan 10 Posts: 13954 ID: 53948 Credit: 392,336,518 RAC: 171,309
                               
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:/ And what does the Task Duration Correction Factor thing mean? It's like at .5
It's a number maintained by boinc that is used to scale the time estimates based upon actual performance of your computer on real applications.
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My lucky number is 75898524288+1 |
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What are the following settings for the venue that is downloading all this work?
Computer is connected to the Internet about every
Leave blank or 0 if always connected.
BOINC will try to maintain at least this much work.
Maintain enough work for an additional
If more than blank on both these items it will ask for extra work. If left blank (0) you will only get work when needed. These are shared across ALL BOINC Projects you are connected to, so if you are trying to keep extra work in one project, it will also do that in other projects.
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My lucky numbers are 121*2^4553899-1 and 3756801695685*2^666669±1
My movie https://vimeo.com/manage/videos/502242 |
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It's really hard to say, but I can guess it might have something to do with us trying to get more accurate time estimates out of boinc. We've adjusted some values to make them more realistic, but your computer may have previously adjusted its timing estimates based on the previous setting. Therefore, it may think these tasks are a lot smaller than the previous ones.
there's something broken but it seems to be broken in different ways depending on the host.
My i7-970 thinks 321 and PPS Sieve tasks will take a lot longer than they actually do so there's no waiting tasks there.
my i7-2600 was under the impression that PSP was going to take a few minutes to run so has gone and fetched 14 of them. |
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rroonnaalldd Volunteer developer Volunteer tester
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Joined: 3 Jul 09 Posts: 1213 ID: 42893 Credit: 34,634,263 RAC: 0
                 
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Which BOINC clients do you use? |
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Tyler Project administrator Volunteer tester Send message
Joined: 4 Dec 12 Posts: 1078 ID: 183129 Credit: 1,376,122,338 RAC: 6,351
                         
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Which BOINC clients do you use?
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275*2^3585539+1 is prime!!! (1079358 digits)
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Tyler Project administrator Volunteer tester Send message
Joined: 4 Dec 12 Posts: 1078 ID: 183129 Credit: 1,376,122,338 RAC: 6,351
                         
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I started to do PPS (LLR) Instead of SGS (LLR) And I'm still getting an extraordinary amount of tasks... Please help!
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275*2^3585539+1 is prime!!! (1079358 digits)
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I have 2 i7's running Linux each of which can complete Woodall's in 28-30 hours. Both are running BOINC 6.10.58. Both are set to "additional work buffer" of 0.01 days (about 15 minutes) and to connect every 0 days (always connected). One is running 3 tasks with ~6 hours to go, but has downloaded two more as-yet-unstarted tasks and assigned them an expected runtime of 2 hours 30 minutes (!) each. That's something new to me; usually the estimates are way too high (not that I pay any attention to them, but this thread made me look). The other is running 4 tasks, each 75% complete, mostly reasonable estimates to complete, and nothing queued yet.
I'm not sure if this is another symptom of the misbehavior described by the OP, but I thought I'd mention it.
--Gary
p.s. Yes, running clean-up. |
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Michael Goetz Volunteer moderator Project administrator
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Joined: 21 Jan 10 Posts: 13954 ID: 53948 Credit: 392,336,518 RAC: 171,309
                               
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I have 2 i7's running Linux each of which can complete Woodall's in 28-30 hours. Both are running BOINC 6.10.58. Both are set to "additional work buffer" of 0.01 days (about 15 minutes) and to connect every 0 days (always connected). One is running 3 tasks with ~6 hours to go, but has downloaded two more as-yet-unstarted tasks and assigned them an expected runtime of 2 hours 30 minutes (!) each. That's something new to me; usually the estimates are way too high (not that I pay any attention to them, but this thread made me look). The other is running 4 tasks, each 75% complete, mostly reasonable estimates to complete, and nothing queued yet.
I'm not sure if this is another symptom of the misbehavior described by the OP, but I thought I'd mention it.
--Gary
p.s. Yes, running clean-up.
Probably unrelated to the OP's problem. We've adjusted (i.e., fixed) the size settings on most tasks. That will account for newer tasks having different estimates than older tasks, until the boinc client adjusts the DCF. The goal is to be more consistent between sub-projects, so (in theory) you can run lots of different tasks without messing up the estimates.
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My lucky number is 75898524288+1 |
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Tyler Project administrator Volunteer tester Send message
Joined: 4 Dec 12 Posts: 1078 ID: 183129 Credit: 1,376,122,338 RAC: 6,351
                         
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I have 2 i7's running Linux each of which can complete Woodall's in 28-30 hours. Both are running BOINC 6.10.58. Both are set to "additional work buffer" of 0.01 days (about 15 minutes) and to connect every 0 days (always connected). One is running 3 tasks with ~6 hours to go, but has downloaded two more as-yet-unstarted tasks and assigned them an expected runtime of 2 hours 30 minutes (!) each. That's something new to me; usually the estimates are way too high (not that I pay any attention to them, but this thread made me look). The other is running 4 tasks, each 75% complete, mostly reasonable estimates to complete, and nothing queued yet.
I'm not sure if this is another symptom of the misbehavior described by the OP, but I thought I'd mention it.
--Gary
p.s. Yes, running clean-up.
Probably unrelated to the OP's problem. We've adjusted (i.e., fixed) the size settings on most tasks. That will account for newer tasks having different estimates than older tasks, until the boinc client adjusts the DCF. The goal is to be more consistent between sub-projects, so (in theory) you can run lots of different tasks without messing up the estimates.
What is the DCF? On my PC it keeps jumping around. Seems to be going lower and lower, a few days ago it was ~0.5 and now its ~0.3
EDIT: Now its ~0.42
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275*2^3585539+1 is prime!!! (1079358 digits)
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Tyler Project administrator Volunteer tester Send message
Joined: 4 Dec 12 Posts: 1078 ID: 183129 Credit: 1,376,122,338 RAC: 6,351
                         
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Sill downloading by the dozen :/
EDIT: Clicked no new work while it was downloading new tasks... Now I have 160.
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275*2^3585539+1 is prime!!! (1079358 digits)
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A couple more questions:
In BOINC Manager, please go into activity and are they all set to Run Based on Preferences? If not, then it's using local preferences. Then you need to check how you have your local preferences set.
Are you using a BOINC Manager (like BAM)? If so, you need to set your preferences through that, not on PG itself.
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My lucky numbers are 121*2^4553899-1 and 3756801695685*2^666669±1
My movie https://vimeo.com/manage/videos/502242 |
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Tyler Project administrator Volunteer tester Send message
Joined: 4 Dec 12 Posts: 1078 ID: 183129 Credit: 1,376,122,338 RAC: 6,351
                         
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A couple more questions:
In BOINC Manager, please go into activity and are they all set to Run Based on Preferences? If not, then it's using local preferences. Then you need to check how you have your local preferences set.
Are you using a BOINC Manager (like BAM)? If so, you need to set your preferences through that, not on PG itself.
They say "Run Always" and "Use GPU Always". Should I change that?
Nope, no BOINC manager.
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275*2^3585539+1 is prime!!! (1079358 digits)
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Tyler Project administrator Volunteer tester Send message
Joined: 4 Dec 12 Posts: 1078 ID: 183129 Credit: 1,376,122,338 RAC: 6,351
                         
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I set it to run based on preferences - aborted all current WUs, then started downloading tons and tons more :/
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275*2^3585539+1 is prime!!! (1079358 digits)
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Tyler Project administrator Volunteer tester Send message
Joined: 4 Dec 12 Posts: 1078 ID: 183129 Credit: 1,376,122,338 RAC: 6,351
                         
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Tried to reset project, now I'm not getting any tasks at all.
EDIT: rebooted PC, got tasks - tons and tons again.
PLEASE HELP ASAP!
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275*2^3585539+1 is prime!!! (1079358 digits)
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Reading the HELP page:
Run always: Do work, regardless of preferences.
Run based on preferences: Do work when your preferences allow it.
There are two different ways to set and change your general preferences. Here's how they work; you can decide which is best for you.
On the web: You can edit preferences on the web site of any project in which you participate.
In the BOINC Manager: You can edit general preferences using a dialog in the BOINC manager
BOINC Preferences
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My lucky numbers are 121*2^4553899-1 and 3756801695685*2^666669±1
My movie https://vimeo.com/manage/videos/502242 |
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Tyler Project administrator Volunteer tester Send message
Joined: 4 Dec 12 Posts: 1078 ID: 183129 Credit: 1,376,122,338 RAC: 6,351
                         
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Reading the HELP page:
Run always: Do work, regardless of preferences.
Run based on preferences: Do work when your preferences allow it.
There are two different ways to set and change your general preferences. Here's how they work; you can decide which is best for you.
On the web: You can edit preferences on the web site of any project in which you participate.
In the BOINC Manager: You can edit general preferences using a dialog in the BOINC manager
BOINC Preferences
My preferences are set how they are supposed to. I've tried "Run always" and "Run based on preferences" And both send craploads of tasks.
EDIT: Oh crud.. Now I'm producing those "3 Second Error"s... There's quite a few in my pending.
EDIT 2: All my pps_llr_xxxxxxxxxx are being the 3 second errors, but my pps_llr_extended_xxxxxxxx are not.
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275*2^3585539+1 is prime!!! (1079358 digits)
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Tyler Project administrator Volunteer tester Send message
Joined: 4 Dec 12 Posts: 1078 ID: 183129 Credit: 1,376,122,338 RAC: 6,351
                         
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Aborted all PPS_LLR WUs and got some Sophie Germans.. Same issue. (not the 3 second errors, but the sheer amount of tasks).
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275*2^3585539+1 is prime!!! (1079358 digits)
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Dave  Send message
Joined: 13 Feb 12 Posts: 3171 ID: 130544 Credit: 2,232,958,303 RAC: 621,688
                           
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Under BOINC manager Computing Prefs > Network usage > min + max work buffer, how many days is it set to? Try just setting each to 0.1 then setting to No New Tasks under Projects tab. |
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Tyler Project administrator Volunteer tester Send message
Joined: 4 Dec 12 Posts: 1078 ID: 183129 Credit: 1,376,122,338 RAC: 6,351
                         
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Under BOINC manager Computing Prefs > Network usage > min + max work buffer, how many days is it set to? Try just setting each to 0.1 then setting to No New Tasks under Projects tab.
Holy crud. Thank you. It was set to 5 days and 10 days. But in my primegrid prefs here on the site it's set to 0... Lets see if it will stop getting so many tasks
EDIT: Yup, only got 6 tasks when I requested some. Thanks!
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275*2^3585539+1 is prime!!! (1079358 digits)
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Dave  Send message
Joined: 13 Feb 12 Posts: 3171 ID: 130544 Credit: 2,232,958,303 RAC: 621,688
                           
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No problem :). Always best to keep a small cache so u don't hog work for others and are pretty quick submitting units. Also if u have a HDD crash or other problem we would have to wait until the cache times out. And something else but I've forgotten now :|
Oh yes that's it: don't abort units which have already started - you can however abort units which have not. |
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Michael Goetz Volunteer moderator Project administrator
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Joined: 21 Jan 10 Posts: 13954 ID: 53948 Credit: 392,336,518 RAC: 171,309
                               
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No problem :). Always best to keep a small cache so u don't hog work for others and are pretty quick submitting units. Also if u have a HDD crash or other problem we would have to wait until the cache times out. And something else but I've forgotten now :|
Oh yes that's it: don't abort units which have already started - you can however abort units which have not.
The BIG reason not to download a lot of tasks is it makes it less likely that you will be the first to report any prime that you find. If it's sitting on your computer for a week before it gets processed, that gives the other guy a week's head start.
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My lucky number is 75898524288+1 |
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Tyler Project administrator Volunteer tester Send message
Joined: 4 Dec 12 Posts: 1078 ID: 183129 Credit: 1,376,122,338 RAC: 6,351
                         
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The BIG reason not to download a lot of tasks is it makes it less likely that you will be the first to report any prime that you find. If it's sitting on your computer for a week before it gets processed, that gives the other guy a week's head start.
Yeah, that's why I was irritated at the huge work queue. I could finish all of them (Yes, 1280) PPS LLRs before the deadline, but if I found a prime, my chances of being primary finder would be next to 0
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275*2^3585539+1 is prime!!! (1079358 digits)
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