LHC@home

4.3.2005 09:20 UTC
We are very concerned and apologize to users for the 'Zero CPU' problem. We suspect a problem with our use of the Boinc API (which has changed recently) but we are short of effort to fix it quickly. We considered halting the project but as the results are in fact very valuable we would like to continue, with the support of those users who can accept possible credit errors. Thank you all again for your crunching for LHC!
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The above Post was Posted by the Dev's early this morning ... I say the Dev's should continue with the Project & those that don't want to put up with the inconvenience of some lost credit can Crunch other Projects until the problem is fixed ...

I've lost numerous credits before running some of the Beta Projects & thats all I consider this to be at the moment ... ;)

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I'm staying here. The occasional lack of credit is just an annoyance but not worth quitting over.

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BOINC WIKI

BOINCing since 2002/12/8

I look at it this way ...

At Predictor I was getting about 2100 Credits Per Day ...
At Einstien I was getting about 2500 Credits Per Day ...

Here at LHC I've averaged a little over 2500 Credits per day for the last 6 days even with the Credit Problem so I really don't see where I'm losing that much credit ... I try not to look at the Results so what I don't know won't bother me ... hehe

I don't think comparing the credits given across project boudaries is valid. Whilst I agree it should be, experience shows this not to be the case.

100 credits at predictor is worth more then 80 credits at predictor, not necessarily more then 80 credits at Einstein. It is relative.

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Wave upon wave of demented avengers march cheerfully out of obscurity into the dream.

As Poorboy said I also consider this a beta project and am in for the science. I applaud the adminisrators for continuing the project even under heavy fire by many users and will continue to crunch even though it looks like I'm only getting less than half of credit earned.Hopefully they will get this problem fixed sooner than later.

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Saw the news on the front page too. I have never crunched LHC at 100% and I never will. But it's not worth quitting over. Like all in this thread, I have more important problems in my life than to worry about a few zero credits.

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<BR>derekm
Team MacAddict

I can add my self to the numerous oppinions here :-)
As i see it, that's a drawback that can come by Beta testing. I'll be glad to help getting the project on the feet so that one day a "LIVE" stat can begin.

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Laryea

Agreed, for as long as they are working on a fix, I see no reason not to support them 100% :)

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Scientific Network : 45000 MHz - 77824 MB - 1970 GB

From my part it is the agreement that there is a problem, they are working on it with the little help we can give them (random user generated tests to attempt to highlight the WHY ...)

I am not so sure that it is a new problem as my data says it has been around since at least september.

The data also says that it is typically only a 10%-12% loss rate of WU processed. Even better from my perspective is that my greatest fear was that it was affecting the longest running WU the most, but that does not appear to be the case.

It DOES seem to affect at least three types of WU, so we are not out of the woods yet.

Last note; this is just an observation of one or two WU as they processed and failed. It occurred in both cases within 30 minutes of starting the WU's processing. So, it may be an issue with BOINC and the way that it handles checkpointing, or it may be an unexpected error condition inside the model that causes it to halt without giving an error and then in the exit processing the CPU time gets zeroed ...

I posted all the supporting data in another thread yesterday so if you are interested you can look at it there. I did have two more zeros yesterday but both of them were v64lhc which are the short two hour kind ...

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Just keep the workunits coming as long as it has scientific value!

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____________________________
<i><a>http://www.team-norway.org</a></i>

I agree. Keep the work units coming.

One thing though.. Please Please please pleeeeeaaaaasssseee increase the units per day. Over the past week, I've had 3 or 4 of my crunchers returning the "No work from project, maximum daily limit exceeded" message.

I'm not kicking out a bunch of errors, they're just fast crunchers. It hurts me to see them starving for work :(

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<a href="http://www.boincsynergy.com"><img src="http://www.boincsynergy.com/images/stats/112lhc.png"></a>

Join other projects. It's what the BOINC system was designed for.

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Wave upon wave of demented avengers march cheerfully out of obscurity into the dream.

Your grasp of the obvious is uncanny! If I was interested in any of the other projects I would have done that a long time ago.

Gosh, let me think. The difficulty between staying attached to LHC, or moving off to Predictor... hmmmm...

Let's stay here. At least this project uses the 4.xx version of the server software, which doesn't screw around with my overall settings as Predictor's 3.xx version does. It's a bitch to have to daily change your settings on 4 other projects because Predictor did a scheduler update and thus set the new setting for all other projects. :(

Detached from PP@H, still attached to 5 projects, life is good. :)

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Jord

BOINC FAQ Service

Just want to state that I will keep my computers attached too. If
the science is good it is enough.

BTW, this is the perfect time for all who always say that they are
not into the credits but only into the science. Now they can
proof it.

... hopefully my signature is working, so I can show off with
my credits :)

Michael

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Team Linux Users Everywhere

I won't be detaching anytime soon.

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<a href="http://www.boincsynergy.com"><img src="http://www.boincsynergy.com/images/stats/112lhc.png"></a>

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Your grasp of the obvious is uncanny! If I was interested in any of the other projects I would have done that a long time ago.
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Believe it or not, there are people that get introduced to a project and do not know about others. I simply chose to offer a way out of your "predicament".

Instead, no, you complain, try to get the quotas raised and deprive other people of wu's because you are sucking more then your fair share - that sounds real nice. Enjoy.

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Wave upon wave of demented avengers march cheerfully out of obscurity into the dream.

Credit?, Who cares? Not me. Crunching for the science only and always will!

WCK

Unless you find that flying saucer planet... oh, errrm, wrong project. ;)

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Jord

BOINC FAQ Service

>Instead, no, you complain, try to get the quotas raised
>and deprive other people of wu's because you are sucking
>more then your fair share - that sounds real nice. Enjoy.

"Please Please please pleeeeeaaaaasssseee increase the units per day." dosen't really sound like complaining to me... More like a polite request since one of the two reasons for the quota is (likely) gone.

"I'm not kicking out a bunch of errors, they're just fast crunchers. It hurts me to see them starving for work :(" Taking more than his fair share? I don't know, but taking how ever many his machine can crunch through sounds fair to me. Regardless, the reason for the quota has NOTHING to do with "fair share" or anything like that. The folks at LHC have the quota in place for two reasons (from what I could glean from the other thread): to help reduce server load, and to get through a small batch of WUs quickly.

None of this is to say that the quota should nesscessaraly be increased (that decision should of course be left up to the LHC staff), but you villify him far more than he deserves.


On topic, /me isn't going to leave either. The loss of credit certianly sucks, but I'm willing to go on anyway. It's not like credit is some vital thing I'll die without :D

Puffy

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