How on earth is this possible? Bare in mind these are SINGLE cpu Pentium 4s.

Created 5 Nov 2004 16:38:02 UTC
Total Credit 79843.09
Recent average credit 1137.68
http://setiweb.ssl.berkeley.edu/show_host_detail.php?hostid=332165

Created 10 Nov 2004 17:50:42 UTC
Total Credit 10145.81
Recent average credit 1.98
http://setiweb.ssl.berkeley.edu/show_host_detail.php?hostid=353921

Created 9 Oct 2004 12:56:53 UTC
Total Credit 148169.72
Recent average credit 894.74
http://setiweb.ssl.berkeley.edu/show_host_detail.php?hostid=239985

Created 5 Aug 2004 6:22:39 UTC
Total Credit 116011.36
Recent average credit 699.79
http://setiweb.ssl.berkeley.edu/show_host_detail.php?hostid=128175

In fact there are loads of them, just look under the "Top Computers" page.

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If you could provide the links to those computers others might be able to provide some answers. However, remember that when you merge computers the created date is the date that they were merged. Also, it is possible to merge different computers into one if they are similar enough. That might be considered cheating although it would not affect the total amount of credit awarded to the user's account.

This might answere the question:
http://setiweb.ssl.berkeley.edu/results.php?hostid=332165&offset=300 .

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WARR - Wissenschaftliche Arbeitsgemeinschaft für Raketentechnik und Raumfahrt
(WARR - scientific working group for rocket technology and space travel)

No is doesn't. So what if it was created earlier? It's a SINGLE cpu 2.53 GHz P4.

Total Credit 79889.09
Recent average credit 1123.01
CPU type Intel(R) Pentium(R) 4 CPU 2.53GHz Pentium
Number of CPUs 1
Operating System Microsoft Windows XP Professional Edition, Service Pack 1, (05.01.2600.00)
Memory 255.48 MB
Cache 976.56 KB
Measured floating point speed 1287.93 million ops/sec
Measured integer speed 3819.99 million ops/sec

No way in hell that machine can do 1123 RAC!!!

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>
> No way in hell that machine can do 1123 RAC!!!
>

Then you merge 2 machines the RAC is artificially increased also.

In that case, SETI should change "Top Computers" to "Who Merged The Most Computers"

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> >
> > No way in hell that machine can do 1123 RAC!!!
> >
>
> Then you merge 2 machines the RAC is artificially increased also.
>

Ingleside

You are very well informed and most of the time you are correct. I always pay attention to your comments and I have learned from them. In this occasion I believe you are wrong.

When merging machines the Total credit is the sum of both machines, but the RAC does not change and the RAC of the original machine remains the same. for example:

Machine A: Host=12; Total credit=24; RAC=8 merging with
Machine B: Host=22; Total credit=3; RAC=2, gives
Machine C: Host=22; Total credit=27; RAC=8

Is this correct?

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One: Yes it appears the person has merged several PCs whos CPUs are same speed and using same O/S. For my estimate I would guess 4 similar machines.

Two: Person has recompiled boinc client to grant higher benchmark scores. Optimized, changed source possibly. No way to be sure.
The calculations for those benchmark scores (1287 Float, 3819 integer) computes correctly when multiplied by CPU time. Which means with client 4.05 typically this "computer" was claiming 45 to 57 credits per WU.
What I don't understand is how those numbers were not allways the highest (and thus thrown out) for credit granting. But checking a few WUs it seems they were not allways highest.

The seconds per WU seems like a reasonable number for a machine of that CPU and O/S (2.53 MHz Pentium 4, non-HT, Windows XP) for a 4.05 client.

The Recent Average Credit (1123.54) is VERY unusual. Even if the user had not submitted results for 2 weeks and then submitted them all at once (and they were then verified all at once) the RAC would not be that high. So again I think maybe 4 machines.

How they get around the max 50 WUs per host #, I don't have any clue.

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> Created 9 Oct 2004 12:56:53 UTC
> Total Credit 148169.72
> Recent average credit 894.74
> http://setiweb.ssl.berkeley.edu/show_host_detail.php?hostid=239985

That one is interesting. I am checking his returned results. Am now on offset=1300 and still the download files are errors on the 10th of November. It almost looks as if the download limit doesn't apply for this person. Over 2600 units downloaded and returned with a Client Error? Come on!

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Good catch Legacy. It is possible to run up a lot of credit in a short period of time (I have personally had 39,000 credits granted in a single day, shortly after a server outage), but in light of no recent problems, it does seem fishy. I have about 30 active PC's, and I earn roughly 17000-18000 credit per day, but no single machine has a RAC higher than 285. One thing to keep in mind here, most of my PC's are work systems as well, meaning they are in use all day long....

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<a><img src="http://boinc.mundayweb.com/stats.php?userID=525">

<a><img src="http://www.wombatradio.com/stats/rtb/sig.php">

My star cruncher is a DUAL AMD Opteron 248 system with 1 gig
matched pair low latency memory, and it sits at 814.80 RAC.
This is running WinXP Pro SP2. So the 1137.68 RAC for a
single P4 seems pretty far fetched to me, even if there
are 4 of them merged...

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2 different hardware.

Was not attached to SETI for a while.
Reput some clients a day ago (m$, 4.53)
Reading this thread, went to my hostfile.

Never say never, BOINC is offering "merge identical hosts"
This right now taken hardcopy shows, BOINC can offers a BAD selection.

Of course I canceled the action.

It looks like, the client identification subroutine should be reviewed to
better discern the clients.

I get about 420 Rac a day out of my one pc.I have ht.

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......In Space No One Can Hear You Scream......

> My star cruncher is a DUAL AMD Opteron 248 system with 1 gig
> matched pair low latency memory, and it sits at 814.80 RAC.
> This is running WinXP Pro SP2. So the 1137.68 RAC for a
> single P4 seems pretty far fetched to me, even if there
> are 4 of them merged...
=========

I wouldn't say that, my one P4 3.4 was up to 420 RAC at the LHC Site and still climbing so if you merged 4 of them together then 1137.68 isn't un-realistic at all. Off course it's not going to stay there because it won't be able to sustain that high a RAC.


It will be interesting to see what that Computer can do here at the Seti Site now that I'm back Crunching over here again.

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Hmm, just look the results: Most are calculation times are around 5 hours. So there is most likely around 4 machines or more. I guess the RAC gets a bit messed when merging similar computers. Or there is some other bug in merge.

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> theres no way i have a dual 2.4ghz xeon server w/ ht that only hits 558.03
> with roughly 25,000 credits. Now this is a production server but a single proc
> machine ..theres no way
>
What I think you're omitting is the recompiled boinc client, with higher benchmark scores.

If you were to use such a client on the dual xeon server, with modest benchmark multiple so it wasn't allways the highest result, it would get higher RAC.

The only Cheat that i need is a real good Money Cheat for Game Morrowind !

> What I think you're omitting is the recompiled boinc client, with higher
> benchmark scores.

Maybe overlooks something, but what computer have a recompiled client?

> > What I think you're omitting is the recompiled boinc client, with higher
> > benchmark scores.
>
> Maybe overlooks something, but what computer have a recompiled client?
>

Answer: Any programmer who wants one. Source for Boinc and Seti@home is open source and downloadable.

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>
> Answer: Any programmer who wants one. Source for Boinc and Seti@home is open
> source and downloadable.
>

Yes, have more than once pointed to the source in my posts so knows this. ;)
But you're indicating one or more of these computers in this thread have a compiled client with artificially increased benchmark...
Not having any P4 maybe overlooks something...