GPU to 72 status... - Page 44

chalsall · 2012-02-07, 13:55

Quote:

Originally Posted by kladner

From that, I would ask about the relative priorities of P-1 v TF. Granted, one runs on the CPU and the other on the GPU. But isn't there a chance that TF has at least as much need as P-1? At one point the GPU to 72 assignment page for P-1 stated that exponents factored to less than 72 might be reassigned for more TF.

I would argue that, where possible, P-1 should be done after TFing to 72 because it's "cheaper", both from the persective of cost per run and cost per factor found.

However, the truth is the project has garnered so much P-1 firepower (much to my surprise) that the TFing hasn't been able to keep up with the P-1'ing, and so many are currently doing P-1 on candidates only TFed to 71 (and, for some workers who change the range limits, only 70).

chalsall · 2012-02-07, 14:07

Quote:

Originally Posted by flashjh

Now for my original reply... I think we all do that. Especially considering what's involved with G272... afterall manually getting the assignments and working with non-GUI isn't exactly simple.

Indeed. And towards that end I've been working on a PrimeNet API for G72 to allow automatic assignments for the P-1, DC and LL work types. Once Bdot has implemented the file locking mechanism, a spider can be created to automate the DCTF and LLTF work types as well.

Again, never send a human to do a machine's job...

Quote:

Originally Posted by flashjh

We'll do what we can... I think that if exponents get released before P-1 that we 'may' get another chance at them, is that correct?

Yes, that is correct. However, we have not had to release any candidates without P-1 done for over six weeks.

I think we actually may end up with enough P-1 fire power to do that work as well by the time we need to. Over the last 30 days we've averaged 82.4 P-1 completions per day, and this is also increasing every week.

kladner · 2012-02-07, 14:17

[QUOTE=Dubslow;288523]Philosophical musings and jokes aside (I can't compete there) there were ~250 (and still around ~220) available at 52M TFd up to 72. Why would you go with higher expos and less TF?

"Originally Posted by Dubslow http://www.mersenneforum.org/images/...s/viewpost.gif
Edit2: Also, we're going to need a LOT more P-1 firepower... in the upper ranges, most of them haven't had it. See esp. 58-59M on the Available TF report."

I wanted to see what you were on about. It's not like it's a long term commitment.

James Heinrich · 2012-02-07, 14:22

Quote:

Originally Posted by flashjh

Can v27 do 64 bit yet?

That's the problem, and why I'm still using v26.6 on my SB-E. I'll be happy to switch over once George finishes his 64-bit modifications.

kladner · 2012-02-07, 14:24

Quote:

Originally Posted by chalsall

I would argue that, where possible, P-1 should be done after TFing to 72 because it's "cheaper", both from the persective of cost per run and cost per factor found.

However, the truth is the project has garnered so much P-1 firepower (much to my surprise) that the TFing hasn't been able to keep up with the P-1'ing, and so many are currently doing P-1 on candidates only TFed to 71 (and, for some workers who change the range limits, only 70).

Thanks, chalsall. I appreciate your take on things as it makes it easier to sort out the many views expressed on these subjects.

EDIT: I actually traded those 58's in for 51's and 52's, anyway.

kladner · 2012-02-07, 14:29

Originally Posted by flashjh http://www.mersenneforum.org/images/...s/viewpost.gif
Can v27 do 64 bit yet?

Quote:

Originally Posted by James Heinrich

That's the problem, and why I'm still using v26.6 on my SB-E. I'll be happy to switch over once George finishes his 64-bit modifications.

I'm looking forward to that "sub-version", too. ;)

petrw1 · 2012-02-07, 16:00

in Team factoring and P-1

firejuggler · 2012-02-07, 20:38

ok... i'm gonna cry...
factored up to 2^72
M54929293 has a factor 8627989904271520875047 (72.87 bits)
k=233*751*9007*49831, found in stage-1, b1=545000

KyleAskine · 2012-02-07, 22:56

So much for trying to fight for #3.

One of my PC's (w/ HD5870) was crashed the entire weekend, so I lost around half of my throughput since the last time I updated.

chalsall · 2012-02-07, 23:06

Quote:

Originally Posted by firejuggler

ok... i'm gonna cry...
factored up to 2^72
M54929293 has a factor 8627989904271520875047 (72.87 bits)
k=233*751*9007*49831, found in stage-1, b1=545000

Why cry?

This is a case where P-1 found a factor above where the (new) nominal trial factoring would have found it (and after it having been TFed to 72).

c10ck3r · 2012-02-08, 00:52

At the risk of sounding stupid(er than I am), is there a GPU program for P-1, or is it still relegated to CPUs with loads of RAM?
On a related note, is it possible to get P-1 with B1 less than 75000?

2012-02-07, 16:00	#480
petrw1 1976 Toyota Corona years forever! "Wayne" Nov 2006 Saskatchewan, Canada 1001001010100₂ Posts	GPU to 72 is #2 and #3 in Team factoring and P-1

2012-02-07, 20:38	#481
firejuggler Apr 2010 Over the rainbow 101000101110₂ Posts	ok... i'm gonna cry... factored up to 2^72 M54929293 has a factor 8627989904271520875047 (72.87 bits) k=233751900749831, found in stage-1, b1=545000 Last fiddled with by firejuggler on 2012-02-07 at 20:39*

2012-02-07, 22:56	#482
KyleAskine Oct 2011 Maryland 2×5×29 Posts	Aw crap So much for trying to fight for #3. One of my PC's (w/ HD5870) was crashed the entire weekend, so I lost around half of my throughput since the last time I updated.

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2012-02-07, 14:17	#476
kladner "Kieren" Jul 2011 In My Own Galaxy! 2·3·1,693 Posts	[QUOTE=Dubslow;288523]Philosophical musings and jokes aside (I can't compete there) there were ~250 (and still around ~220) available at 52M TFd up to 72. Why would you go with higher expos and less TF? "Originally Posted by Dubslow http://www.mersenneforum.org/images/...s/viewpost.gif Edit2: Also, we're going to need a LOT more P-1 firepower... in the upper ranges, most of them haven't had it. See esp. 58-59M on the Available TF report." I wanted to see what you were on about. It's not like it's a long term commitment.

2012-02-08, 00:52	#484
c10ck3r Aug 2010 Kansas 547₁₀ Posts	At the risk of sounding stupid(er than I am), is there a GPU program for P-1, or is it still relegated to CPUs with loads of RAM? On a related note, is it possible to get P-1 with B1 less than 75000?