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-   -   GPU to 72 status... (https://www.mersenneforum.org/showthread.php?t=16263)

chalsall 2012-01-02 20:11

[QUOTE=petrw1;284509]600 P-1 completions on GPU-to-72 (27 factors) = 4.5%.

Moving on to GPU-to-72 DC. I was hoping for 1,000 in 2012 but I'm gonna need a little more hardware first.[/QUOTE]

Thanks for all your work petrw1, and for being the first big P-1 contributor!!! :smile:

Looks like monst, delta_t et al are going to be able to help fill the void you leave behind. :cool:

Dubslow 2012-01-03 04:38

Question: It's a well known fact that PrimeNet isn't good at handing out credit for TF factors found. A 71-->72 bit run is ~4 GHz Days. I turned in a factor, got 11GHzDays credit, not unexpected. However, GPU to 72 shows 9 GHz Days; should be less than 4. (For reference: 47930807)

Edit: Well I suppose it's not really a question, but still...

(Also, edit2: Available shows 65 expos at 69 bits, but I can't get anything to 70. Everything I get at 71 is already at 70, but there are clearly 65 available at 69 bits. Just a note, probably not a bug.)

chalsall 2012-01-03 05:14

[QUOTE=Dubslow;284550]Question: It's a well known fact that PrimeNet isn't good at handing out credit for TF factors found. A 71-->72 bit run is ~4 GHz Days. I turned in a factor, got 11GHzDays credit, not unexpected. However, GPU to 72 shows 9 GHz Days; should be less than 4. (For reference: 47930807)[/QUOTE]

I'm terribly sorry Dubslow.

G72 gives the same GHz Days credit for a factor found between n and n+1 as a no factor found effort between n and n+1.

In 47,930,807's particular case, the predicted credit is 9.97803659 GHz days.

This over-credits you.

I will have to leverage further James' code to determine exactly how much (read: how much less) credit should be awarded for a factor found.

[QUOTE=Dubslow;284550](Also, edit2: Available shows 65 expos at 69 bits, but I can't get anything to 70. Everything I get at 71 is already at 70, but there are clearly 65 available at 69 bits. Just a note, probably not a bug.)[/QUOTE]

Not a bug.

Have you tried clicking on the "Lowest Depth Available" option on the LL/TF reservation page?

LaurV 2012-01-03 05:20

[QUOTE=kladner;284400]Now it's between you and LaurV in the Overall category.[/QUOTE]
Be at easy guys, I will resume my LL/DC soon. It was just an over-the-holiday pride-boost to raise my status a bit, and as soon as my current assignment is gone, I will go back to LL stuff again.

Dubslow 2012-01-03 05:57

[QUOTE=chalsall;284553]I'm terribly sorry Dubslow.

G72 gives the same GHz Days credit for a factor found between n and n+1 as a no factor found effort between n and n+1.

In 47,930,807's particular case, the predicted credit is 9.97803659 GHz days.
[/QUOTE]
Wow. Please ignore me. I went back and looked, and found that the ~4 GD number I cited is for 53M from 70--71. Whoops :redface: :blush:
The 9-10 GD number is accurate.

[QUOTE=chalsall;284553]
Not a bug.

Have you tried clicking on the "Lowest Depth Available" option on the LL/TF reservation page?[/QUOTE]
With and without. (Go to assignment page, change 72 to 70, and hit button. Optional check before hitting button.) [code]Sorry... No available exponents which match your criteria.[/code]

kladner 2012-01-03 05:57

[QUOTE=LaurV;284555]Be at easy guys, I will resume my LL/DC soon. It was just an over-the-holiday pride-boost to raise my status a bit, and as soon as my current assignment is gone, I will go back to LL stuff again.[/QUOTE]

It's all good. The work progresses.

chalsall 2012-01-03 06:14

[QUOTE=Dubslow;284559]With and without. (Go to assignment page, change 72 to 70, and hit button. Optional check before hitting button.) [code]Sorry... No available exponents which match your criteria.[/code][/QUOTE]

That's because there are no candidates which need to be TFed from 69 to 70...

Try "hitting the button" without changing 72 to 70.

Dubslow 2012-01-03 06:16

[url]http://www.gpu72.com/reports/available/[/url]
Has listed the bottom 65 for the last three or four hours; the top four are new in the last 20 minutes.
(Still not working, even for the new ones.)

On an unrelated note, what's the overall P-1 rate of grabbed exponents (over the lifetime of the project) and what's the overall rate of released exponents? Are we going from 40 to 50%? 40 to 80%? (And how many actual P-1 assignments would that be?)

Dubslow 2012-01-03 07:08

[QUOTE=kladner;284400]
EDIT: As happens, your prediction has come about. I think a upswing of results from delta_t bumped me from the Overall Top 10. I'm still hanging in there on the TF graph. Now it's between you and LaurV in the Overall category.[/QUOTE]

As far as our 460's go, this is always interesting...
[url]http://www.mersenne.org/report_top_500_TF/[/url]
[code]
45 Dubslow 11515.557 3135 30 | 57 1
46 ktony 11484.347 2480 26 | *** 8 1 [/code]I'm pretty sure you're about to overtake me... in the next 3 days or so...




Edit: LOL
As of ten minutes ago, overall, you and LaurV are literally separated by .3 GHz-Days... [url]http://www.mersenne.org/report_top_500/[/url]
[code]
121 LaurV 13566.683 | 459 202 27 2 | 75.0 4.3 13.4 7.0 0.3
122 ktony 13566.389 | *** 50 8 | 84.7 4.2 10.9 0.3 [/code]

kladner 2012-01-03 14:30

Quote Dubslow: "I'm pretty sure you're about to overtake me... in the next 3 days or so..."

FWIW, we've swapped places a time or two. I think our TF outputs must be nearly identical, as might be expected with very similar hardware.

I'm not a sports follower of any sort, so I suppose the bit of amusement I get from PrimeNet ranks fills some of the gap. Then there's politics.....but I stay away from that in this venue, even over at the Lounge.

Dubslow 2012-01-03 21:45

I'm not too sure. As I've now I'm slightly over 100 GD behind you... and my unreported work I don't think was worth that much. I'm pretty sure you've got slightly greater throughput than me.

Edit: Now that I think about it, I'm getting 95% load without an OC, and with OC, the load only decreases. So I think that's where your extra juice is coming from.


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