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Message boards : Graphics cards (GPUs) : Increase in queue, from 2 WUs to 6?

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Message 12030 - Posted: 22 Aug 2009 | 2:26:37 UTC

My GTX 260 has always gotten 2 WUs at a time. Yesterday I got 6 in total. Is this normal? Has been on GPUGrid since about the 8th.

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Message 12056 - Posted: 23 Aug 2009 | 9:08:25 UTC - in response to Message 12030.

It seams it is 4 task per gpu or 2 per cpu core...?!
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Message 12074 - Posted: 24 Aug 2009 | 9:25:43 UTC

WHY am I getting so many WUs? I set the prefs to 1 day and aborted 4 WUs. Sometime later it gets 4 more?

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Message 12075 - Posted: 24 Aug 2009 | 9:29:34 UTC - in response to Message 12074.

We have done a server update few days ago, but not changed any other setting.
Is anyone receiving more WUs?

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Message 12107 - Posted: 25 Aug 2009 | 15:43:15 UTC - in response to Message 12075.

We have done a server update few days ago, but not changed any other setting.
Is anyone receiving more WUs?

gdf

I added a new machine with 190.62 drivers and BOINC v6.10.0. It was up to 5 WUs a couple days ago and 3 last night.
I think it might be related to the new v2.3 app test.

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Message 12109 - Posted: 25 Aug 2009 | 16:47:07 UTC - in response to Message 12107.
Last modified: 25 Aug 2009 | 16:47:45 UTC

i did recieve like 5 wu at once, but have only recieved 2 since but that of course, i hit no new task after the first 2 are sent.

i'll let it naturally try later. and report the results.

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Message 12110 - Posted: 25 Aug 2009 | 18:42:30 UTC - in response to Message 12109.
Last modified: 25 Aug 2009 | 18:44:32 UTC

I received 6 workunits today, all with a severe underestimate of the usual time they take to complete, after a power failure apparantly lost all of the workunits already in the queue on my 64-bit computer. Are they actually shorter workunits, in which case this is reasonable, or did this computer also lose something needed for an accurate estimate of how fast the workunits will run?

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Message 12114 - Posted: 25 Aug 2009 | 20:54:41 UTC - in response to Message 12110.

i've got 4 wu's for my one card on a quad.

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Message 12115 - Posted: 25 Aug 2009 | 21:38:47 UTC

I've got GPU-Grid set to 1/4th the combined ressource share of the cpu projects and have a cache setting of a few hours (so BOINC caches enough work for about 1 day) and am not getting more WUs than previously.

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Message 12120 - Posted: 25 Aug 2009 | 22:26:13 UTC

Thanks for replies!

I set resource share to 25 and "Maintain enough work for an additional" .5 days. Hit update and in messages it says I have reached max of 6 tasks.

I hate to keep aborting tasks so will wait and see if it downloads more when it finishes the current task.

Thanks

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Message 12122 - Posted: 26 Aug 2009 | 5:53:51 UTC - in response to Message 12120.

2009-08-26 07:48:15 GPUGRID Message from server: (reached limit of 6 tasks)

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Message 12129 - Posted: 26 Aug 2009 | 12:32:43 UTC - in response to Message 12110.

I received 6 workunits today, all with a severe underestimate of the usual time they take to complete, after a power failure apparantly lost all of the workunits already in the queue on my 64-bit computer. Are they actually shorter workunits, in which case this is reasonable, or did this computer also lose something needed for an accurate estimate of how fast the workunits will run?


I got the message about a limit of 6 workunits also, and have disabled downloading any more GPUGRID workunits until I see how accurate the apparantly rather low expected time is for the ones I already have.

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Message 12144 - Posted: 27 Aug 2009 | 7:51:11 UTC

Nothing I do seems to make a difference. It is maintaining 5 in queue one working. I set it to no more tasks until this queue clears as I am now no longer getting bonus points.

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Message 12145 - Posted: 27 Aug 2009 | 9:14:47 UTC - in response to Message 12144.

Which boinc version do you use?

gdf

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Message 12172 - Posted: 28 Aug 2009 | 2:38:08 UTC - in response to Message 12145.

6.6.36 on Vista 64, 190.38 drivers, GTX 260 216.

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Message 12174 - Posted: 28 Aug 2009 | 4:23:09 UTC

Of the six workunits I downloaded at once, all with an estimated time of a little over 2 hours, at least two reached a computation error after about 11 hours, and one was aborted by the project.The last two now have estimated total time back near normal, so I have enabled getting new workunits again.

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Message 12175 - Posted: 28 Aug 2009 | 6:09:45 UTC

My computer apparantly erased its copy of these workunits during a power failure, or possibly during my driver upgrade to 190.38.

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I'll let you decide if it's better to send another copy of them, or reassign them to someone else.

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Message 12179 - Posted: 28 Aug 2009 | 8:32:46 UTC

Did it again. Had 2 Redundant results so was down to one on GPU, enabled Get new tasks and it got 5.

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Message 12211 - Posted: 29 Aug 2009 | 20:59:57 UTC

I've tried setting different settings and nothing makes a difference. I just got 6 more.

A person on our team with a GTX 260 has stated it is happening to him. I asked him to post it here,

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Message 12212 - Posted: 30 Aug 2009 | 0:28:22 UTC

Yes, as PG said, I am having this problem now too. I'm getting 6 tasks at a time, and am not consitent enough to abort WUs. I'm running Bionic 6.5.0 on Win7 64bit on a GTX 260 216 Driver 190.37. Any fix?

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Message 12217 - Posted: 30 Aug 2009 | 10:14:10 UTC - in response to Message 12212.

Did you try something like that?

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Message 12225 - Posted: 30 Aug 2009 | 15:08:25 UTC - in response to Message 12217.

IDK about PG, but I did not. How would I do that?

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Message 12226 - Posted: 30 Aug 2009 | 16:29:19 UTC

@ETA yes

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Message 12227 - Posted: 30 Aug 2009 | 18:36:58 UTC

@Otis: either in your preferences on the home page or locally under extras / settings / network usage.

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Message 12255 - Posted: 1 Sep 2009 | 13:58:49 UTC - in response to Message 12227.

I wasn't sure how to do the resource share. I have cache down to one day which is as low as i'm willing to do since it's also running WCG and internet goes out regularly for up to 12-16 hours.

So at one day it still DLs 6.

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Message 12341 - Posted: 3 Sep 2009 | 21:45:52 UTC - in response to Message 12255.

On the homepage of each project you can go into "your account" and in the settings section the 3rd point should be called something like "ressource share and graphics". It's the top most option, by default set to 100.

If you have 2 projects, one with 100 and the other with 200 then BOINc will try to allocate 100/(100+200) = 1/3 of the computing time to the first project and 200/(100+200) = 2/3 to the second. The caches for individual projects are adjusted accordingly (in theory).

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Message 12356 - Posted: 4 Sep 2009 | 18:27:00 UTC - in response to Message 12030.

It is looking like I'm getting something like this problem...The 295 is running at around 1 WU every 7.5 hours per side but grid is down loading 8 at a time so the last 2 will fail the 24 hour since download timelimit and from that point on so will the rest this is however day1 so maybe things will automatically adjust??

Ihave no preferences set for grid on this rig this is just what I have been given automatically....boinc messagas gives max 8 wu/day

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Message 12360 - Posted: 4 Sep 2009 | 20:18:51 UTC - in response to Message 12356.

Addendum: I've moved my 1 day of work cached to 0.8days in boinc manager to see if this has an impact...Will report tomorrow

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Message 12366 - Posted: 4 Sep 2009 | 21:17:35 UTC

If it fetches 8 at a 1 day setting, 0.8 probably won't be low enough. This also depends on your BOINC client, though. Clients prior to 6.6 have been notoriously unaccurate regarding caches and ressource share in the presence of GPUs.

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Message 12388 - Posted: 5 Sep 2009 | 19:40:09 UTC - in response to Message 12366.

Ok, thanks for that.......there was no change at 0.8 but I've just received credit for a Wu that took >24hours from download to completion and it seems to have not effected the points bonus ? (not complaining :))

further observations will be reported

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Message 12398 - Posted: 5 Sep 2009 | 22:59:38 UTC - in response to Message 12388.

Now I'm a little embarrased....where did I get that 24hrs limit from???

Made me go searching.....

from the FAQ

So now, we apply a multiplier of 2.0x for all workunits, but give and additional 25% for WUs returned within two days. This is useful for us to reduce latency of the results while keeping us in line with a correct value for credits as in SETI.

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Message 12400 - Posted: 6 Sep 2009 | 5:55:42 UTC

I got 10 on one machine. It has BOINC version 6.10.3 and a GTX295. Resource share is 50% for the project and cache is set to 1 day. They have been taking around 8 and a half hours so I would have considered 6 to be sufficent for the day (ie 3 per GPU)... if it had a 100% resource share.
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Message 12402 - Posted: 6 Sep 2009 | 10:11:39 UTC - in response to Message 12400.
Last modified: 6 Sep 2009 | 10:14:55 UTC

*Nice* to hear that 6.1.0.3 is not much better in this regard. For 6.5.0 there's a reason why I wrote "I've got GPU-Grid set to 1/4th the combined ressource share of the cpu projects and have a cache setting of a few hours (so BOINC caches enough work for about 1 day)". I have no clue which logic tells it that a hand full of hours = 1 day, but that's the way it works. Lower your settings and see what you get.
Edit: with 6.5.0 I need the ressource share to be about (number of GPUs / number of CPUs) * combined cpu ressource share. Otherwise the long term debts get out of whack much quicker and at some point one of the ressources runs dry. Could be that 6.6. behaves better in this regard due to the distinction between "debts" and "CUDA debts".

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Message 12433 - Posted: 9 Sep 2009 | 23:44:44 UTC
Last modified: 9 Sep 2009 | 23:46:35 UTC

I put my GTX 260 216 back on GPUgrid after having it on F@H for more than a week and when I come back I again get 6 WUs. I have the Resource Share at 80% WCG and 20% GPUGrid. I have changed my Addition Work BUffer to different numbers and still get 6 WUs.

Is there no solution to this?

Vista 64, Boinc 6.6.36, 190.62

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Message 12434 - Posted: 10 Sep 2009 | 3:55:18 UTC - in response to Message 12433.

I put my GTX 260 216 back on GPUgrid after having it on F@H for more than a week and when I come back I again get 6 WUs. I have the Resource Share at 80% WCG and 20% GPUGrid. I have changed my Addition Work BUffer to different numbers and still get 6 WUs.

Is there no solution to this?

Vista 64, Boinc 6.6.36, 190.62


I have a Quad with 2x 8800GT and 1x 9500GT. When starting GPUGrid after a fresh install of Windows, I get 10 WU's immediately. I had BOINC set to get 0.25 days of work (to try to limit that). However, it appears that after the initial 10, if I set it to a higher number (like 1 day of work), it will keep it around 6 WU's at a time.

The only thing I can think of is that initially you get WU = 2 * # of gpu's + 1 * # of processors.

In my case, that is 10. For your case, that is 6. I haven't been able to get less than 10 initially, but it corrects after a while by not downloading new WU's. Maybe give it a couple days to see if you don't download anymore and get closer to your desired # of WU's in queue.

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Message 12435 - Posted: 10 Sep 2009 | 5:57:29 UTC - in response to Message 12434.
Last modified: 10 Sep 2009 | 6:07:50 UTC

I was able to decrease the number of workunits in the queue on my machine by decreasing

(estimated time between internet connections + amount to leave in the queue)/average time each workunit takes

to less than 1.

Now only one workunit fetched at a time, but just one or no workunits not started yet normally in the queue.

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Message 12437 - Posted: 10 Sep 2009 | 9:43:39 UTC - in response to Message 12434.

I have a Quad with 2x 8800GT and 1x 9500GT. When starting GPUGrid after a fresh install of Windows, I get 10 WU's immediately. I had BOINC set to get 0.25 days of work (to try to limit that). However, it appears that after the initial 10, if I set it to a higher number (like 1 day of work), it will keep it around 6 WU's at a time.

Don't forget that this project is still vastly under-estimating the compute times of the tasks it sends out. Once BOINC has completed a task, it can calculate a DCF to correct the faulty estimates and fetch a more sensible number next time: but even after the doubling of the estimates last time I complained about this, I'm still seeing a DCF of 8.825382 on my best-adapted machine.

With a fresh installation of Windows, and presumably a fresh installation of BOINC, you will start with a DCF of 1.000000 - so no wonder you got eight times as much work as you really need.

Time for another nudge on those <rsc_fpops_est>, boys? - It's 40 days since the last one.

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Message 12439 - Posted: 10 Sep 2009 | 10:18:39 UTC - in response to Message 12437.

Yes, we are increasing it gradually.

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Message 12450 - Posted: 11 Sep 2009 | 7:34:54 UTC

Hi all, I use this thread ...

This WU was calculated within 48 hours (from 9 Sep 2009 12:48:58 UTC to 10 Sep 2009 14:32:46 UTC) and received no bonus 25%!
What went wrong?

Have a nice weekend :-)
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Message 12468 - Posted: 12 Sep 2009 | 7:59:29 UTC

I have resorted to using the "Allow New tasks" "Do Not allow new tasks" or whatever button. When I get down to one I allow and get 5 more. Loosing bonus points on 2 of 6 WUs. It is the science getting done that is important but our team is coming up thru the ranks fast and I hate to not get the points for the team.

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Message 12497 - Posted: 14 Sep 2009 | 6:05:34 UTC - in response to Message 12450.

This WU was calculated within 48 hours (from 9 Sep 2009 12:48:58 UTC to 10 Sep 2009 14:32:46 UTC) and received no bonus 25%!
What went wrong?


Me too. I'm #3 in this WU, which I returned in 35 hours...

Tom

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Message 12709 - Posted: 24 Sep 2009 | 10:04:07 UTC

Since Windows update a few days ago I am now back to getting 2 WUs at a time as before. :-)

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Message 12790 - Posted: 26 Sep 2009 | 12:42:19 UTC

My 9800 GT has gotten only one at a time since I set the queue size to less than the time needed to complete the average workunit.

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Message 13183 - Posted: 15 Oct 2009 | 19:43:16 UTC - in response to Message 12709.

I was down to 2 WUs at a time on my 260, but now I'm getting 10 at a time again, and so am not getting the turn around required for the bonus. Is there anything I can do to make it get fewer WUs?

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Message 13184 - Posted: 16 Oct 2009 | 9:31:51 UTC - in response to Message 13183.

I was down to 2 WUs at a time on my 260, but now I'm getting 10 at a time again, and so am not getting the turn around required for the bonus. Is there anything I can do to make it get fewer WUs?

Decrease your cache setting. Usually anything over 1 to 1.5 days is a waste of time in that if you have a good set of attached projects the only reason to have a larger cache is to try to force BOINC to get more work from an "unreliable" project. Basically, the point is to bridge the gap if you have an outage of your ISP ...

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