Hannah (Apr 16 2009) |
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Message boards : Technical News : Hannah (Apr 16 2009)
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Don't forget the dedicated crunchers who are part of a team with ongoing potm's. I am constantly on those except for the occasions when projects are selected that I have no interest in & then choose a project to crunch for that month. | |
| ID: 887565 · | |
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I have never understood why the credit system has to be complicated. | |
| ID: 887620 · | |
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If you want credits to stay steady and at the level they were a few months ago, then start protesting against the CUDA app, and its incorrect claims and processing times. | |
| ID: 887627 · | |
And @ Bob.. I myself dont like the hit in RAC after a server outage either.. But look at it like this.. everyone takes a hit and.. it looks interesting on the graphs :) Hey Mike - Yeah, credit-per-flop on SETI is the gold standard, and SETI@home is nice and stable on that one. My compliments to the admins who have kept it standardized. Other projects have sold their soul with shocking credit inflation, sometimes by a factor of 5! Everyone knows it, though, so nobody is impressed when you need a wheelbarrow full of those credits just to buy one loaf of bread. On the RAC side, I was assuming each project can choose their own half-life for the RAC calculation, influencing the responsiveness of the RAC. If this is not the case then I should say . . . Never mind. Does anyone know if projects can choose their own RAC half-life? Bob ____________ Opinion stated as fact? Who, me? | |
| ID: 887709 · | |
On the RAC side, I was assuming each project can choose their own half-life for the RAC calculation, influencing the responsiveness of the RAC. If this is not the case then I should say . . . Never mind. IFAIK this is handled by the open source database software package supplied by Boinc developers. I see no reason it couldn't be hacked like any other part of the Boinc software. It just isn't worth the time to change the standard used by everyone else. As an aside. Several project over pay credits, generally they are still in the Alpha stage of development. I've found that over time as the projects mature and stabilize they tend to take a second look at the credit issue and slowly attempt to bring them back in line with the SETI gold standard. I think the main projects try to be within 10-15% of this gold standard. One as to remember that SETI also went through growing pains stabilizing its credits and still has issues with Astropulse. I know that some project do have problems doing this because the nature of the WU makes it difficult to forecast how much work is required on a new a batch of WU. Others with less sense of community either don't give a damn or may purposely pay more to attract crunchers. Boinc can't dictate to these projects, they can only suggest they come in line. Responsible crunchers on these projects are the only one that could try to persuade them to realign to be better citizen of the Boinc community. | |
| ID: 887751 · | |
Yeah, credit-per-flop on SETI is the gold standard Actually, the "gold standard" is in the definition of a cobblestone: From Wikipedia: The basis for the BOINC credit system is the cobblestone named after Jeff Cobb of SETI@home. The basis of the system is the concept that 100 cobblestones would be claimed for one day of work on a computer with the following specifications: * 1,000 double-precision MIPS based on the Whetstone benchmark. * 1,000 VAX MIPS based on the Dhrystone benchmark. Flop-based credit is just a more repeatable form of benchmark * time, and it should give the same result. ____________ | |
| ID: 887839 · | |
... I'm not saying we should give more credits for work completed. I am suggesting a much shorter time for RAC gratification. Sorry, I misread your intent. The basic idea with the current system is that the moving average smooths out the variations. In an ideal world, absent changes on a system, RAC would be constant. If you want to smooth out the effects of an outage, I think you'd want to average over a longer period. But I agree with your intent. ____________ | |
| ID: 887840 · | |
An added benefit for the Berkeley crew: Fewer user complaints about an occasional outage. Shorter recovery times for RAC would greatly decrease user frustration after an outage. For example, maybe the RAC rampup should be no longer than the typical MTBF of the SETI@home server system. Yep, a short RAC halflife will benefit the majority of users in these twitter-age. Those looking for long term drift had always look outside official stats anyway (e.g. BS-RAC). However, make it too short and we'll get a flood of complains every wednesday after the outage. Personally I would prefer a lot of other metrics as well (e.g. fraction error, % completed on time etc) ____________ | |
| ID: 888434 · | |
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what do you consider an older computer i have a 1.8ghz amd pushed to 2.6something and drop'd like $120 on a 9800gt just so i could smash S@H wu's. AP wu's take too long on my pc at 150~200hrs. so i dont usually run Ap unless i have too and when that isnt a option i jump over to gpugrid for a day to keep everything busy. one thing i must say tho is ive had to set my vidcard to stock clocks and im thinking about lowering my cpu OC due to the warmer months closing in | |
| ID: 888573 · | |
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Just discovered this very interesting thread, and will try to offer my few cents worth as a professional lab rat (test engineer) for over 35 years. | |
| ID: 888587 · | |
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Bill, | |
| ID: 888594 · | |
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Paul, thanks for the response. Skype is beyond my little mind at the moment, so please try a private message. I would love to discuss the human interface issues of this topic with somebody who has really worked on it. | |
| ID: 888614 · | |
what do you consider an older computer i have a 1.8ghz amd pushed to 2.6something and drop'd like $120 on a 9800gt just so i could smash S@H wu's. AP wu's take too long on my pc at 150~200hrs. so i dont usually run Ap unless i have too and when that isnt a option i jump over to gpugrid for a day to keep everything busy. one thing i must say tho is ive had to set my vidcard to stock clocks and im thinking about lowering my cpu OC due to the warmer months closing in I just brought a new cruncher on-line, and it's working on its' first work unit. It is roughly 70 hours in, and it looks like it will finish in another 670 hours or so. ... and I don't care. It's on 24/7 for reasons not related to SETI. ____________ | |
| ID: 888639 · | |
Just for what it's worth, I asked back in September, and got this in response: I don't think we have a way to tell how many readers there are on the forums, but we've got 24914 users who have posted at least once to the forums. 12877 who have posted at least twice. And 8554 who have posted at least 3 times. I think the SETI Forums would make an amazing study for someone in Sociology or Psychology. It has been observed in the past that crunching is seasonal. School districts for example drop off when summer starts, and come back on line when everyone comes back in the fall. Power rates and the Economy certainly can affect things. Some install BOINC on company-owned computers, and then the IT staff removes it. Some may be disappointed by progress. Others complain of a "lack of science" when we're doing something that is essentially binary: ET exists, or he doesn't. I think there is a perception that the SETI servers need the same up-time as Amazon.com, but that isn't true -- but some people won't accept it. A few get angry when they make suggestions and those suggestions aren't adopted, or when they don't see improvements implemented right away. But that doesn't tell us anything about the average participant, who never posts. ... and that's most everybody. ____________ | |
| ID: 888669 · | |
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Thanks for the numbers Ned. Us engineers thrive on that sort of stuff. | |
| ID: 888746 · | |
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You all have some great thoughts...sorry this will be long. | |
| ID: 888756 · | |
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In my view one of the reasons for lack of interest is the perception that the project is dying on its feet. It appears that vlunteers are just crunching for the sake of it. The website is in need of a makeover with information as to what has been discovered. Look at the newsletters - nothing since September ! | |
| ID: 888762 · | |
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Newsletters?? We get newsletters?? Hey, where's mine? :) | |
| ID: 888769 · | |
In my view one of the reasons for lack of interest is the perception that the project is dying on its feet. It appears that vlunteers are just crunching for the sake of it. The website is in need of a makeover with information as to what has been discovered. Look at the newsletters - nothing since September ! It seems to me that there is only one kind of "real" news, and that announcement can only be made once. It also signals the end of the project. ____________ | |
| ID: 889248 · | |
In my view one of the reasons for lack of interest is the perception that the project is dying on its feet. It appears that vlunteers are just crunching for the sake of it. The website is in need of a makeover with information as to what has been discovered. Look at the newsletters - nothing since September ! And the first detection of an extra-solar planet by the dimming of its star's light was the only one because everybody stopped looking. And because a strong single pulse was seen in data from the Parkes radio telescope nobody else is looking? IMO, the first detection of a signal with a high probability of having been produced by an extraterrestrial civilization will cause much more searching. Nobody ever said there was only one needle in the haystack. Joe | |
| ID: 889339 · | |
Message boards : Technical News : Hannah (Apr 16 2009)
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