Reserved for MF - Sequence 4788 - Page 55

fivemack · 2009-12-02, 10:25

2000@4e7 on the C161, no factor.

Running another 2000@4e7.

jrk · 2009-12-03, 02:04

I've finished 1000 curves @ B1=43000000, B2=388112953420

Batalov · 2009-12-03, 04:01

On my Phenom, I've finished 1000 curves @ B1=110e6, B2=def
and will run some more (while I am waiting for a Lanczos job)

fivemack · 2009-12-03, 09:38

Second 2000@4e7 produced no factor either.

Running 4000@4e7 and GPU polysearch in parallel.

jrk · 2009-12-03, 09:53

So if I'm keeping count correctly, that is 5000 curves at ~4e7 and 1000 curves at 11e7 total so far.

That is roughly a t50.

Quote:

Originally Posted by fivemack

Running 4000@4e7 and GPU polysearch in parallel.

I am also running a GPU poly search.

Andi47 · 2009-12-03, 10:10

Quote:

Originally Posted by jrk

So if I'm keeping count correctly, that is 5000 curves at ~4e7 and 1000 curves at 11e7 total so far.

That is roughly a t50.

So maybe we need several curves at B1=11e7 to go for t55?

jrk · 2009-12-03, 10:15

Quote:

Originally Posted by jrk

I am also running a GPU poly search.

And I have adjusted my parameters, so Tom & I should be searching different spaces. I am using small A5 values this time instead of choosing large values.

fivemack · 2009-12-03, 10:59

Umm, I am just running 'msieve -v -np' so starting with A5=0, so I may be stepping on your toes. Can you suggest better parameters?

10metreh · 2009-12-03, 11:36

Quote:

Originally Posted by Andi47

So maybe we need several curves at B1=11e7 to go for t55?

The t55 estimate was for the c169, not the c161. I think maybe another t50 would be in order.

bsquared · 2009-12-03, 14:13

Quote:

Originally Posted by jrk

So if I'm keeping count correctly, that is 5000 curves at ~4e7 and 1000 curves at 11e7 total so far.

Add another 800 @ 11e7; done last night.

jrk · 2009-12-03, 16:53

Quote:

Originally Posted by fivemack

Umm, I am just running 'msieve -v -np' so starting with A5=0, so I may be stepping on your toes. Can you suggest better parameters?

You are OK. Please continue. I meant that I changed msieve's parameters for selecting the rational coefficient, so it should not choose the same as a normal msieve.

Although now I am not sure that very small A5's are much better...

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2009-12-02, 10:25	#595
fivemack (loop (#_fork)) Feb 2006 Cambridge, England 2³×11×73 Posts	2000@4e7 on the C161, no factor. Running another 2000@4e7.

2009-12-03, 02:04	#596
jrk May 2008 3·5·73 Posts	I've finished 1000 curves @ B1=43000000, B2=388112953420

2009-12-03, 04:01	#597
Batalov "Serge" Mar 2008 Phi(4,2^7658614+1)/2 9,497 Posts	On my Phenom, I've finished 1000 curves @ B1=110e6, B2=def and will run some more (while I am waiting for a Lanczos job)

2009-12-03, 09:38	#598
fivemack (loop (#_fork)) Feb 2006 Cambridge, England 1918₁₆ Posts	Second 2000@4e7 produced no factor either. Running 4000@4e7 and GPU polysearch in parallel.

2009-12-03, 10:59	#602
fivemack (loop (#_fork)) Feb 2006 Cambridge, England 2³×11×73 Posts	Umm, I am just running 'msieve -v -np' so starting with A5=0, so I may be stepping on your toes. Can you suggest better parameters?