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Number crunching :
A Solution For "No Work Available"
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AC Send message Joined: 22 Jan 05 Posts: 3413 Credit: 119,579 RAC: 0 |
> > For those of you that are using the BOINC Client that keep having > problems > > downloading new work units, try the following: click the Projects tab, > then > > right click your SETI@home project and click Update. Do this every ten > > seconds or so. Try doing this a dozen times, or until the server finally > > responds and uploads to you. > > > > Better solution would be to stop boinc, wait an hour, restart it > > you'll not get it exactly at an hour, so you'll randomize when you connect. > I've tried that and it seems to work sometimes. |
Toby Send message Joined: 26 Oct 00 Posts: 1005 Credit: 6,366,949 RAC: 0 |
> Using one of BOINC's built-in functions is not quite "spamming" Matt. Spam is > unsolicited e-mail advertisement. I didn't say that people should try to > Update a thousand times, just a dozen man. The server operators must expect > this type scenario. 70,000 users requesting more work a dozen times is a LOT of requests to the server. As for them expecting this type of scenario... No. 1) the client is actually supposed to back off for at least 10 minutes between server requests and retrying before this SHOULD result in a "bug off" message from the server and no work. I suspect you are getting "no schedulers responded" messages which means a connection to the server could not be fully established so the "bug off" message was not recieved by your client. 2) This is still the OLD server. They are working on migrating to a new one that should be able to handle this load much better but as of now, they simply cannot do it so no amount of admin "planning" can change that. A member of The Knights Who Say NI! For rankings, history graphs and more, check out: My BOINC stats site |
AC Send message Joined: 22 Jan 05 Posts: 3413 Credit: 119,579 RAC: 0 |
The new servers are designed to handle this kind of load, and since the command script requests are not REDUNDANT, the server should have no prob processing them. If it did, it would be offline right now, and as can see on the server status page, it's working just fine. And what if the number of SETI/BOINC users goes up from 70,000 to 140,000, then what? |
Ingleside Send message Joined: 4 Feb 03 Posts: 1546 Credit: 15,832,022 RAC: 13 |
> The new servers are designed to handle this kind of load, and since the > command script requests are not REDUNDANT, the server should have no prob > processing them. If it did, it would be offline right now, and as can see on > the server status page, it's working just fine. And what if the number of > SETI/BOINC users goes up from 70,000 to 140,000, then what? > The BOINC client is designed to do exponential backoff so the servers isn't flooded with requests. When for some reason there isn't any work, the servers is designed to tell the client to not ask again for some time, and the client is designed to wait as long as asked to wait, or the exponential backoff-time, whichever is longest. When you're constantly hitting "retry", you're not doing as either the client or the servers was designed to do, and isn't helping things out. In case the problem was on your end, example your internet-connection was down or another configuring-problem like not enough disk space, the client is still allowing you to bypass this backoff-time. Also, another design-desision was to make BOINC a multi-project-platform, so when one project is out of work users can still get work from other projects and keep crunching. If you don't want to run other projects, this is your decision, but this means you're ocassionally can run out of work. In "classic", users was recommended to not run the client in a tight while loop, but instead insert a sleep 21600 Due to the exponential backoff, the BOINC-client is using something similar to help ease the server-load and network-load. |
AC Send message Joined: 22 Jan 05 Posts: 3413 Credit: 119,579 RAC: 0 |
Okay Ingleside, your point on the exponential backoff is well taken. Again, I'll say that I wasn't the one having problems with getting new WU's since I just usually just get one at a time. And since you mentioned the project being "out of work", after seeing your recent WU credits, I can see why this may be the case. How about I revise my advise about Updating about every ten seconds or so for a doze times, to Updating to every few minutes or so for a dozen times. It is not practical to wait for long periods of time to get new WU's sometimes. |
Ingleside Send message Joined: 4 Feb 03 Posts: 1546 Credit: 15,832,022 RAC: 13 |
If you've got a permanent connection it's normally no reason to manually hit update, BOINC takes care of this for you. My RAC being high or low have more to do with zig-zagging between the different projects, than due to any of them being out of work. Even neither of us have any problems with shortage of work, can still point out your suggestion of constantly hitting "retry" isn't a good idea. ;) |
AC Send message Joined: 22 Jan 05 Posts: 3413 Credit: 119,579 RAC: 0 |
> If you've got a permanent connection it's normally no reason to manually hit > update, BOINC takes care of this for you. > > My RAC being high or low have more to do with zig-zagging between the > different projects, than due to any of them being out of work. > > Even neither of us have any problems with shortage of work, can still point > out your suggestion of constantly hitting "retry" isn't a good idea. ;) > >My connection is permanent. However, sometimes Windows breaks off the connection after awhile and BOINC does not allways establish a connection, so it needs the Update command to communicate. The server still looks good. |
SURVEYOR Send message Joined: 19 Oct 02 Posts: 375 Credit: 608,422 RAC: 0 |
So Alex, You just join the 22 Jan 2005, and what makes you an expert on how Boinc works? If you keep pressing update the server will mark you computer to wait for workunits, you will not get any wu faster. You are better off to wait an hour then retry. The data base, not the server, is the problem. The repeated request for work just bogs down the data base so nothing get done. The best solution is to attach to a backup project. Fred BOINC Alpha, BOINC Beta, LHC Alpha, Einstein Alpha |
KWSN_Dagger Send message Joined: 14 Feb 04 Posts: 36 Credit: 3,578 RAC: 0 |
Predictor is a pretty good project for WU's They run for me around 35 to 45 mins. http://predictor.scripps.edu/ You can just set the preferences to say 5 and that way SETI will be your main project, and Predictor will take up the slack whenever SETI has problems. Believe me though, SETI right now is a heck of alot better than when it just emerged into post-beta. ================== Beta tester for SETI, LHC, Einstein, Predictor, CPDN, and Pirates. |
Paul D. Buck Send message Joined: 19 Jul 00 Posts: 3898 Credit: 1,158,042 RAC: 0 |
Sign up for CPDN, you will never run out of work. And if you can get an account on one of the other projects like LHC@Home, Predictor@Home, or Einstein@Home ... I think one of them is still giving out a free water glass with each fill-up ... With 3 projects of any of the active ones you can get into, well, never any loss of idle time. |
Ozgur Gurgey Send message Joined: 1 Jan 02 Posts: 25 Credit: 898,747 RAC: 0 |
CPDN is THE solution for the dry season. and hey, while looking up to the stars, don't forget about the good old mother earth |
AC Send message Joined: 22 Jan 05 Posts: 3413 Credit: 119,579 RAC: 0 |
> So Alex, > You just join the 22 Jan 2005, and what makes you an expert on how Boinc > works? > If you keep pressing update the server will mark you computer to wait for > workunits, you will not get any wu faster. You are better off to wait an hour > then retry. The data base, not the server, is the problem. The repeated > request for work just bogs down the data base so nothing get done. The best > solution is to attach to a backup project. > >Well fharmon, I sense a... little bitterness in your reply to me, as if you somehow feel exclusive for being here longer. I can't remember saying I was an expert on how BOINC works, although I am an expert on server ops, and it doesn't really take me and a lot of other users that long to figure out a prog like this one. I never like looking down on people myself, so I try to avoid using phrases like "what makes you an expert". I thought we were here to try to help each other? |
AC Send message Joined: 22 Jan 05 Posts: 3413 Credit: 119,579 RAC: 0 |
Okay guys, I'm thinking about CPDN and some of the other projects as well. It's just that looking for aliens with SETI, and doing climate research are two completely different things. Mother Earth looks gooood Ozgur! |
nairb Send message Joined: 18 Mar 03 Posts: 201 Credit: 5,447,501 RAC: 5 |
It would be interesting to find out which of the projects - seti or cpdn etc - people would like to see a result for. You know:- Predictor finding a cure for cancer or seti finding a signal with alien information. I hope predictor brings results but just imagine the impact on the world of proof of alien life. I think this is a powerful draw. Nairb |
MattDavis Send message Joined: 11 Nov 99 Posts: 919 Credit: 934,161 RAC: 0 |
That's why my Seti:Predictor:Climate:Einstein:LHC ratio is 1:1:1:1:1 :) ----- |
Oliver Agh Send message Joined: 31 Aug 03 Posts: 39 Credit: 779,147 RAC: 0 |
> I hope predictor brings results but just imagine the impact on the world of > proof of alien life. I think this is a powerful draw. Well, I have 3 projects running: Seti, CPDN, and Predictor. But I run Seti at 70%, because I hardly can wait for E.T.!!!! :) |
Mattewan Send message Joined: 12 Jan 02 Posts: 14 Credit: 3,281,397 RAC: 0 |
If you are worried about not having work units to process then why dont you just change your preferences and set the "conenct to network" setting to 10 this will download 10 days of work units..... and even tho you have 10 days worth your client still "tops up" with work units every day or so this way the seti servers can go down for days with no problems |
Rachel Send message Joined: 13 Apr 02 Posts: 978 Credit: 449,704 RAC: 0 |
I was nearly out of work yesterday but downloaded about 40 wu's over last few hours in drips and drabs and have enough for about 4 days now. ......In Space No One Can Hear You Scream...... |
Mike Send message Joined: 17 Feb 01 Posts: 34261 Credit: 79,922,639 RAC: 80 |
Hi Rach I am on the same procedure, was running empty last night but on my last one was getting 30 WUs what´s 4 days worth. greetz from Germany Mike With each crime and every kindness we birth our future. |
John McLeod VII Send message Joined: 15 Jul 99 Posts: 24806 Credit: 790,712 RAC: 0 |
I have each of my computers signed up for every project that will run on that machine. I have not run out of work since August 2004 when there were only 2 active projects, and both of them went down. BOINC WIKI |
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