The 400 and 50 WU limits are way too small |
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Message boards : Number crunching : The 400 and 50 WU limits are way too small
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Yet again my GPUs are idle and my CPUs soon will be. 48 hours ago my cache was as full as it could be given the 400 and 50 WU limits, so I did some sums. | |
| ID: 1197674 · | |
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Yes it is a server-side limit. No, there is nothing you can do about it. Sorry. There's a fix that we have all been waiting for so the limits can be removed, but we've been waiting for several months now. | |
| ID: 1197679 · | |
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The GPU limit is actually 400 - and the only host I have with a cache setting that tests that is currently showing 390 in progress. So some work is being made and getting out, even if not enough for everyone. | |
| ID: 1197681 · | |
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Actually the limits are 400 per GPU and 50 per CPU core but with the amount of errors that you have I'm not surprised that you can't obtain those levels. | |
| ID: 1197683 · | |
What do I need to do to get more WUs in my cache? Well, you can't get more than the limits, but it might help, if you stop aborting hundreds of WUs, as that' what most of your errors are. ____________ . | |
| ID: 1197686 · | |
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Agree with those guys. You can't really complain about lack of work when you've aborted hundreds if not thousands of tasks. | |
| ID: 1197688 · | |
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If you look at the errors they are almost all WU aborted for my QX6700 system. When my 980X first ran out 5 days ago I aborted all outstanding work and stopped running SETI@home. The crazy thing is now the QX6700 get's more WUs than the 980X, it even got 30 GPU WUs this morning! | |
| ID: 1197689 · | |
Agree with those guys. You can't really complain about lack of work when you've aborted hundreds if not thousands of tasks. Given my RAC has gone from 31,893 on 2012-02-17 to currently 38,013 I feel this comment is either ill considered or I guess you are trying to get me to do the same again in the hope you get the WUs I abort! I wish all comments were as informative as the one by Richard Haselgrove. | |
| ID: 1197692 · | |
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I think that you're being very short sighted with those comments but most of us have a few backup projects to fall back on when things here get lean. | |
| ID: 1197697 · | |
If you look at the errors they are almost all WU aborted for my QX6700 system. When my 980X first ran out 5 days ago I aborted all outstanding work and stopped running SETI@home. The crazy thing is now the QX6700 get's more WUs than the 980X, it even got 30 GPU WUs this morning! I'm sorry, are you saying you aborted work on your second system when the first system rean out of work? What's the reasoning behind that ?! As others have noted small systems usually have no problem staying fed - they do eventually receive the few WU's they need. | |
| ID: 1197699 · | |
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As Richard said this is a problem that I noticed and reported on the 8th August last year, so it is over 6 months now. | |
| ID: 1197701 · | |
If you look at the errors they are almost all WU aborted for my QX6700 system. When my 980X first ran out 5 days ago I aborted all outstanding work and stopped running SETI@home. The crazy thing is now the QX6700 get's more WUs than the 980X, it even got 30 GPU WUs this morning! There is no reason, it's just what happened. All the comments about aborted WUs being the issue are incorrect. With the current limits my 980X is limited to 12 x 50 + 4 x 400 = 2200 * 0.3 = 660MB. At 09:00 on 18-Feb-2012 I had 720MB in the cache, so it was 100% full. I started this thread in the hope of understanding why the limits were so low. Richard answered this well. | |
| ID: 1197703 · | |
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Actually, project admins never ever said why there are suddenly limits. The theory to "protect your computer from over-fetch" is user speculation to which I personally don't subscribe to. I'm convinced that this is permanent and to protect S@H servers from sillies with 4+ GPUs and 10-day caches which then needed to fetch literally 10.000-20.000 (2 minute) workunints and that caused huge strain on the servers at every scheduler request. | |
| ID: 1197706 · | |
What do I need to do to get more WUs in my cache? If those aborts are from the 12th of February they are not going to influence getting tasks NOW. Indeed, checking the applications details page show that he has plenty of quota on both machines. | |
| ID: 1197708 · | |
Actually, project admins never ever said why there are suddenly limits. The theory to "protect your computer from over-fetch" is user speculation to which I personally don't subscribe to. I'm convinced that this is permanent and to protect S@H servers from sillies with 4+ GPUs and 10-day caches which then needed to fetch literally 10.000-20.000 (2 minute) workunints and that caused huge strain on the servers at every scheduler request. No it's not user speculation. Trust me, I wrote the email that told the project to impose limits, when I first realised the implications of David's rash stop-gap coding. That was of course assuming that that coding would be reversed soon enough... We do have confirmation from Eric that he is working on the issue. And BTW even with limits the bandwidth is maxxed out (when it's actually working) - quota (vastly) reduces the cache on the hosts, but is does not significantly reduce throughput (at least when the servers are up). Yes, with a bigger cache big rigs wouldn't run dry all the time, but we often seem to be crunching as fast as we can anyway... | |
| ID: 1197711 · | |
Actually, project admins never ever said why there are suddenly limits. The theory to "protect your computer from over-fetch" is user speculation to which I personally don't subscribe to. I'm convinced that this is permanent and to protect S@H servers from sillies with 4+ GPUs and 10-day caches which then needed to fetch literally 10.000-20.000 (2 minute) workunints and that caused huge strain on the servers at every scheduler request. I can confirm that the original limits were actually introduced at user request, in response to the botched fix (by BOINC, not SETI) to the problem that WinterKnight spotted and reported. Believe it or not, there are many aspects of BOINC client processing which we experience and understand much better than the project staff - over the years, I've had that conversation privately with both Matt and Jeff behind the scenes. Conversely, they deal on a daily basis with server issues that we have only the vaguest understanding of. Having said that, I suspect that the delay in reverting to the status quo ante may indeed be because they've seen that the project runs more smoothly with fewer dormant tasks cached. OK, so we've had a bit of a slowdown over the last couple of days - for an unrelated reason, which has been explained in the news threads - but apart from that the project has been sending out and receiving back as much work as it can possibly handle. From their point of view, there's no point in generating a whole lot more work, if the only result is to increase the average turnround time. | |
| ID: 1197712 · | |
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me too i find stupid that my little PC which crunch 2 wu per 5-6 hours (2 core) and crunch a GPU every 15-18 mins has always getting his works all the time every hours. | |
| ID: 1197721 · | |
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The idea for a super host has been around for some time: http://boinc.berkeley.edu/trac/wiki/SuperHost. | |
| ID: 1197722 · | |
The idea for a super host has been around for some time: http://boinc.berkeley.edu/trac/wiki/SuperHost. i am too new to have heard this superhost discussion. thx for the info. take your situation , Hal, you have .... 32 PC ? (unless you didnt merged them ^^). all your 32 PCs are asking 32 times every 5 mins for work. i dont need to type in here 32x times "Gimme work!". instead of that you would have only 1 asking work, and would get more constancy at each time you ask it. i hope you dont need to go all the floor and check 32 PC in 32 different room ^^ imagine 1,000 persons like you => 32,000 pc asking for work instead of just 1,000 servers. thats stress. Is it right when we ask for work, we are downloading them from a Server that has only a buffer of 1000WU only at the time ? even if on the server page it s written 500,000 WU ready to sent, if that 1000WU buffer server is empty, you get : "sorry, the project has no work available!" ? ____________ | |
| ID: 1197727 · | |
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I too would like to share WUs between all my PCs and would also like GPUs to automatically use appropriate CPU WUs when there are no GPU ones available. | |
| ID: 1197730 · | |
Message boards : Number crunching : The 400 and 50 WU limits are way too small
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