Message boards :
Number crunching :
Average Credit Decreasing?
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Author | Message |
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woohoo Send message Joined: 30 Oct 13 Posts: 973 Credit: 165,671,404 RAC: 5 |
it's really good for amassing boinc credits |
Jord Send message Joined: 9 Jun 99 Posts: 15184 Credit: 4,362,181 RAC: 3 |
Well, if anyone here wants to discuss the credits, there's a new thread started here at the BOINC forums by someone from Gridcoin, who wants to know what the next gen credit should do and look like. Good luck. |
jason_gee Send message Joined: 24 Nov 06 Posts: 7489 Credit: 91,093,184 RAC: 0 |
Well, if anyone here wants to discuss the credits, there's a new thread started here at the BOINC forums by someone from Gridcoin, who wants to know what the next gen credit should do and look like. Better get started on the Essay response a bit later... "Living by the wisdom of computer science doesn't sound so bad after all. And unlike most advice, it's backed up by proofs." -- Algorithms to live by: The computer science of human decisions. |
rob smith Send message Joined: 7 Mar 03 Posts: 22456 Credit: 416,307,556 RAC: 380 |
That will make two essays they have to read, I've just started mine... Bob Smith Member of Seti PIPPS (Pluto is a Planet Protest Society) Somewhere in the (un)known Universe? |
William Send message Joined: 14 Feb 13 Posts: 2037 Credit: 17,689,662 RAC: 0 |
Aller guten Dinge sind drei? All good things come in threes? But I'll wait for you both ;) A person who won't read has no advantage over one who can't read. (Mark Twain) |
Grant (SSSF) Send message Joined: 19 Aug 99 Posts: 13835 Credit: 208,696,464 RAC: 304 |
Well, if anyone here wants to discuss the credits, there's a new thread started here at the BOINC forums by someone from Gridcoin, who wants to know what the next gen credit should do and look like. Why not just fix the existing one? From what I remember, what we had prior to Credit New was pretty good; payment for MB work was roughly on par with AP. Grant Darwin NT |
jason_gee Send message Joined: 24 Nov 06 Posts: 7489 Credit: 91,093,184 RAC: 0 |
Well, if anyone here wants to discuss the credits, there's a new thread started here at the BOINC forums by someone from Gridcoin, who wants to know what the next gen credit should do and look like. "Fixing the Existing one", for the purposes here, is roughly on par with fine tuning and complete re-engineering. It's a question of how much you refine or change completely, depending on Whether functional is good enough, or excellence is warranted. [I'd be pretty happy with mediocre...] "Living by the wisdom of computer science doesn't sound so bad after all. And unlike most advice, it's backed up by proofs." -- Algorithms to live by: The computer science of human decisions. |
Grant (SSSF) Send message Joined: 19 Aug 99 Posts: 13835 Credit: 208,696,464 RAC: 304 |
"Fixing the Existing one", for the purposes here, is roughly on par with fine tuning and complete re-engineering. It's a question of how much you refine or change completely, depending on Whether functional is good enough, or excellence is warranted. [I'd be pretty happy with mediocre...] I suspect that would a whole lot easier than redefining what credit is & how it's determined & granted. If you re-define the what & how of credit then that would be a whole new series of issues to be found & resolved, just to get back to where we are now. Grant Darwin NT |
jason_gee Send message Joined: 24 Nov 06 Posts: 7489 Credit: 91,093,184 RAC: 0 |
"Fixing the Existing one", for the purposes here, is roughly on par with fine tuning and complete re-engineering. It's a question of how much you refine or change completely, depending on Whether functional is good enough, or excellence is warranted. [I'd be pretty happy with mediocre...] I agree. No need to redefine what a cobblestone is, change its value etc, just restore the stated intent. I'm more concerned with the intertwined estimate mechanism, which has several classic engineering instabilities. "Living by the wisdom of computer science doesn't sound so bad after all. And unlike most advice, it's backed up by proofs." -- Algorithms to live by: The computer science of human decisions. |
Wiggo Send message Joined: 24 Jan 00 Posts: 36390 Credit: 261,360,520 RAC: 489 |
Just from my perspective my 2 rigs (though change 3570K with Q6600@3GHz, same GPU's) use to pull around 90K RAC under MB V6 only and that dropped to 64K RAC under MB V7. I'm still doing personal tests with MB V8 to see what impact it has. It would just be nice to have a standard baseline that could be comparable across all MB versions. I also remember when doing AP's was a penalty. ;-) Cheers. |
ML1 Send message Joined: 25 Nov 01 Posts: 21017 Credit: 7,508,002 RAC: 20 |
... If you re-define the what & how of credit then that would be a whole new series of issues to be found & resolved, just to get back to where we are now. (In summary, ramble... ramble... no easy fix. Against my engineering perfectionism, I also agree easiest is to stabilize the present system...) Rambling: There are a few good puns defining the cobblestone... Which are a reminder to check whether we are measuring what is intended... Some notes that would make for a long essay:
See new freedom: Mageia Linux Take a look for yourself: Linux Format The Future is what We all make IT (GPLv3) |
Lionel Send message Joined: 25 Mar 00 Posts: 680 Credit: 563,640,304 RAC: 597 |
Since the introduction of Green Bank data, RAC has fallen circa 20-25%. Anyone else noticed a similar effect ... its almost been a gradual roll down |
Brent Norman Send message Joined: 1 Dec 99 Posts: 2786 Credit: 685,657,289 RAC: 835 |
I have seen 20% or more decrease, but that can also be because with all this GBT data to crunch, the AP splitting is far longer between runs. |
Lionel Send message Joined: 25 Mar 00 Posts: 680 Credit: 563,640,304 RAC: 597 |
I don't think it is due to the lack of AP. When they are up I tend to not get many of them anyway so I don't think it has a large bearing on the issue at hand ... could be wrong though ... |
rob smith Send message Joined: 7 Mar 03 Posts: 22456 Credit: 416,307,556 RAC: 380 |
Somewhere around the 20% fall, while some of that can be attributed to the lack of APs a quick look at the returns for guppi units suggests that they are bout 25% down per hour - The CreditScrew algorithm is working as implemented and NOT coping with new types of work correctly. Even as designed it would be hard pressed to cope it is such a poor algorithm... Bob Smith Member of Seti PIPPS (Pluto is a Planet Protest Society) Somewhere in the (un)known Universe? |
Lionel Send message Joined: 25 Mar 00 Posts: 680 Credit: 563,640,304 RAC: 597 |
Has this been run up the flag pole to others ???? |
jason_gee Send message Joined: 24 Nov 06 Posts: 7489 Credit: 91,093,184 RAC: 0 |
Is the FFTW library distributed with the Stock CPU application updated over the v7 similar variant ? [increased] Transition to AVX support in that reference app alone can account for a ~20%+ drop, since CreditNew will claim >100% efficiency through a design flaw (downscaling everyone else) "Living by the wisdom of computer science doesn't sound so bad after all. And unlike most advice, it's backed up by proofs." -- Algorithms to live by: The computer science of human decisions. |
Richard Haselgrove Send message Joined: 4 Jul 99 Posts: 14674 Credit: 200,643,578 RAC: 874 |
Is the FFTW library distributed with the Stock CPU application updated over the v7 similar variant ? [increased] Transition to AVX support in that reference app alone can account for a ~20%+ drop, since CreditNew will claim >100% efficiency through a design flaw (downscaling everyone else) There's been no change in the stock app since January, and the data distribution didn't start until April. If people are being precise in their statements that the credit drop happened when the data arrived (April not January), that can't be the explanation. |
jason_gee Send message Joined: 24 Nov 06 Posts: 7489 Credit: 91,093,184 RAC: 0 |
Is the FFTW library distributed with the Stock CPU application updated over the v7 similar variant ? [increased] Transition to AVX support in that reference app alone can account for a ~20%+ drop, since CreditNew will claim >100% efficiency through a design flaw (downscaling everyone else) Makes sense. Then a remaining possible explanation is the shift to VLAR and associated parameters, For which the reference CPU applications are already relatively efficient. Added weight in numbers, of returned reference app results can swing the normalisation reference also, just as Arecibo Shorty storms used to swing it the other way. "Living by the wisdom of computer science doesn't sound so bad after all. And unlike most advice, it's backed up by proofs." -- Algorithms to live by: The computer science of human decisions. |
Richard Haselgrove Send message Joined: 4 Jul 99 Posts: 14674 Credit: 200,643,578 RAC: 874 |
I have a GTX 750 Ti which I run as closely as possible under lab conditions - constantly active with SETI MB tasks. Its RAC today is 12,815.88. Looking back at the extended stats graph for December (v7), its RAC for the month fluctuated between 12,500 and 13,000 - I don't see a downward trend there. That's been a constant problem with unravelling the credit conundrum: people notice and report the dips, but remain silent about the humps. |
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