LHC@home

This happens quite frequentley to me. It does not matter
if i am valadating against another windows machine or a linux box. I get about 1/2 the credits the others get that returned the same results. Any explanation would be aprreciated.
Here is an example: http://lhcathome.cern.ch/workunit.php?wuid=572145

The other 4 results were granted 7.93 where as i recieved 3.97




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Scotty, I need more power!!!!
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Look at your claimed credit. The granted credit is the middle figure or the lowest figure of the finished results......Your granted credit may be higher or lower than your claimed credit

> Look at your claimed credit. The granted credit is the middle figure or the
> lowest figure of the finished results......Your granted credit may be higher
> or lower than your claimed credit


The new validator can give credits for results that the old one would have claimed to be "invalid" with zero credits.

The new one still flags it "invalid" but it gives still some credits if the result is fairly correct but not close enough to be really good.

> > Look at your claimed credit. The granted credit is the middle figure or
> the
> > lowest figure of the finished results......Your granted credit may be
> higher
> > or lower than your claimed credit
>
>
> The new validator can give credits for results that the old one would have
> claimed to be "invalid" with zero credits.
>
> The new one still flags it "invalid" but it gives still some credits if the
> result is fairly correct but not close enough to be really good.
>

I was the middle figure of the claimed results. if you look at the link, 2 claimed more credit than i did,two claimed less, this is what i dont get. I did do the wu in half the time they did. Could that have something to do with it????


-----------------------------
Scotty, I need more power!!!!
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Are you trying to say that the other four WUWUs that are list have the 7.93 and the first one has the 3.97???????

2267683 17384 2 Nov 2004 15:33:37 UTC 4 Nov 2004 18:15:29 UTC Over Success Done 1,505.09 7.20 3.97
2267684 16227 2 Nov 2004 15:58:54 UTC 2 Nov 2004 17:37:41 UTC Over Success Done 2,021.15 3.65 7.93
2267685 5830 2 Nov 2004 16:59:16 UTC 4 Nov 2004 19:12:06 UTC Over Success Done 7,488.16 9.48 7.93
2267686 7658 2 Nov 2004 16:12:42 UTC 2 Nov 2004 19:18:14 UTC Over Success Done 3,486.12 7.60 7.93
2436814 5929 4 Nov 2004 22:54:08 UTC 5 Nov 2004 5:56:36 UTC Over Success Done 2,531.31 6.71 7.93
For these 5 WUs you got 3.97, 7.93, 7.93, 7.93, 7.93 TOT 35.69 granted credit, you claimed------------========== 7.20, 3.65, 9.48, 7.60, 6.71 TOT 34.64 SO for the 5 WUs you received just about what you claimed......

> Are you trying to say that the other four WUWUs that are list have the 7.93
> and the first one has the 3.97???????
>
> 2267683 17384 2 Nov 2004 15:33:37 UTC 4 Nov 2004 18:15:29 UTC Over Success
> Done 1,505.09 7.20 3.97
> 2267684 16227 2 Nov 2004 15:58:54 UTC 2 Nov 2004 17:37:41 UTC Over Success
> Done 2,021.15 3.65 7.93
> 2267685 5830 2 Nov 2004 16:59:16 UTC 4 Nov 2004 19:12:06 UTC Over Success Done
> 7,488.16 9.48 7.93
> 2267686 7658 2 Nov 2004 16:12:42 UTC 2 Nov 2004 19:18:14 UTC Over Success Done
> 3,486.12 7.60 7.93
> 2436814 5929 4 Nov 2004 22:54:08 UTC 5 Nov 2004 5:56:36 UTC Over Success Done
> 2,531.31 6.71 7.93
> For these 5 WUs you got 3.97, 7.93, 7.93, 7.93, 7.93 TOT 35.69 granted credit,
> you claimed------------========== 7.20, 3.65, 9.48, 7.60, 6.71 TOT 34.64 SO
> for the 5 WUs you received just about what you claimed......
>
>

No, I am asking why the other 4 people got twice the credit when i was the middle credit claimed.


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Scotty, I need more power!!!!
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Yes, that's what I explained earlier, your result is flagged "Invalid" but still got credits :

http://lhcathome.cern.ch/result.php?resultid=2267683


The old validator would have granted 0.0 for that. But it is not totally invalid, it is still close enough to the other results - the new validator "saw" that and gave you a percentage of the possible credits.


http://lhcathome.cern.ch/FAQ.html#2.5

describes, how that works.


p.s.: I have a few of those results too, often when there's two Intel CPUs vs. one AMD or vice versa. No overclocking involved, the CPUs (or different compilers) just get slightly different float results. This could only be fixed if a project would use BCD arithmetics instead of float.

> Yes, that's what I explained earlier, your result is flagged "Invalid" but
> still got credits :
>
> http://lhcathome.cern.ch/result.php?resultid=2267683
>
>
> The old validator would have granted 0.0 for that. But it is not totally
> invalid, it is still close enough to the other results - the new validator
> "saw" that and gave you a percentage of the possible credits.
>
>
> http://lhcathome.cern.ch/FAQ.html#2.5
>
> describes, how that works.
>
>
> p.s.: I have a few of those results too, often when there's two Intel CPUs vs.
> one AMD or vice versa. No overclocking involved, the CPUs (or different
> compilers) just get slightly different float results. This could only be fixed
> if a project would use BCD arithmetics instead of float.

Thank you, that answered my question niceley.


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Scotty, I need more power!!!!
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