Reserved for MF - Sequence 4788 - Page 188

EdH · 2013-02-08, 14:03

+1600@43e6 (total 2000 here), and counting...

yoyo · 2013-02-08, 18:37

I injected 18000 curves @110M, should soon be visible on the stats page. As soon as the first curves return.

yoyo

jrk · 2013-02-08, 19:54

I've started polynomial selection.

EdH · 2013-02-09, 04:20

+1000@43e6 (total 3000 here), and counting...

EdH · 2013-02-10, 04:49

+1000@43e6 (total 4000 here), and counting...

EdH · 2013-02-10, 17:52

+1000@43e6 (total 5000 here), and counting...

That's over 7000 showing in the thread, so far, but I'll let my ECM keep running until jrk posts a polynomial. Then I can see if my relations scripts are now correct.

Andi_HB · 2013-02-10, 18:19

Yoyo have done over 12500 curves @ 110.000.000

C165_4788_i5144
(B1 = 110000000, 12515 / 18000 curves)

bsquared · 2013-02-19, 20:01

The C129 at iteration 5151 is ready for NFS.

EdH · 2013-02-20, 03:41

Well, I'd like to whittle down my ignorance a little more, if possible...

I have the following polynomial for the current c129:

Code:

# norm 2.687898e-12 alpha -7.317079 e 1.065e-10 rroots 3
skew: 473579.03
c0: -27988440920005007752835908970188
c1: 36194624374531631102222182
c2: 2390917326532765272777
c3: -11161597941910483
c4: -11576524265
c5: 6600
Y0: -9803487406814689417760025
Y1: 20246307534533

Where (how) do I get (create) the other values? I thought I had a link to a thread that explained the procedure, but alas, I can't find it.

Nor, can I find one via the search terms I tried...

All my prior work was done by letting jrk, Aliqueit and factmsieve.py do the "thinking" part. But, I really need to learn some more of the actual steps, if possible. A steer toward the right thread would be appreciated. Then I'll crack the c129 as my homework...

Batalov · 2013-02-20, 03:57

I've coded some stuff years ago into the factMsieve.pl so I use it (or else I would have forgotten);
you put the initial poly (add n: of course, and type: gnfs), into a file, say, t.poly, and run
factMsieve.pl t
and kill it soon.
Then copy the auto-generated parameters from the .job file (below, in bold) to the poly to get something like this:

Code:

n: 597647818789865479070164232377390690874759339620592468154446562002337248831301293863065913519522870900965788830826787436105784791
type: gnfs
# norm 2.687898e-12 alpha -7.317079 e 1.065e-10 rroots 3
skew: 473579.03
c0: -27988440920005007752835908970188
c1: 36194624374531631102222182
c2: 2390917326532765272777
c3: -11161597941910483
c4: -11576524265
c5: 6600
Y0: -9803487406814689417760025
Y1: 20246307534533
rlim: 6800000
alim: 6800000
lpbr: 28
lpba: 28
mfbr: 55
mfba: 55
rlambda: 2.5
alambda: 2.5

(one last touch up is: because t.job file will have one of the lims lowered, reset both a/rlim values to the larger of the two).

This is the simplest recipe without any variations. If the number is larger than this one, you can spend some time changing each parameter, and use some canned tricks like the 3LP trick, or the lopsided lpb (e.g. 29 and 30) for some quartics, etc etc etc. If the number is small, any time spent refining will be hardly compensated by simply shooting away the poly to a few computers with separate chosen ranges (controlled by -f and -c), and then, as usual, collecting all relations together, (optionally, remdups), and then msieve -nc.

EdH · 2013-02-20, 04:54

Excellent! Thank you.

All worked as explained and my machines are sieving along rather well. I actually caught your unedited post and went off and achieved the same results as shown, before returning to find the rest.

I think I'll work with this level for now before delving in any deeper. I have some scripts running all the machines for either ECM or sieving at the moment, but I'm looking at building a script to run the poly selection on all of them at once, too.

Thanks again...

2013-02-20, 03:41	#2066
EdH "Ed Hall" Dec 2009 Adirondack Mtns 7146₈ Posts	Well, I'd like to whittle down my ignorance a little more, if possible... I have the following polynomial for the current c129: Code: # norm 2.687898e-12 alpha -7.317079 e 1.065e-10 rroots 3 skew: 473579.03 c0: -27988440920005007752835908970188 c1: 36194624374531631102222182 c2: 2390917326532765272777 c3: -11161597941910483 c4: -11576524265 c5: 6600 Y0: -9803487406814689417760025 Y1: 20246307534533 Where (how) do I get (create) the other values? I thought I had a link to a thread that explained the procedure, but alas, I can't find it. Nor, can I find one via the search terms I tried... All my prior work was done by letting jrk, Aliqueit and factmsieve.py do the "thinking" part. But, I really need to learn some more of the actual steps, if possible. A steer toward the right thread would be appreciated. Then I'll crack the c129 as my homework... Last fiddled with by EdH on 2013-02-20 at 03:42 Reason: just because...

2013-02-20, 03:57	#2067
Batalov "Serge" Mar 2008 Phi(4,2^7658614+1)/2 41·229 Posts	I've coded some stuff years ago into the factMsieve.pl so I use it (or else I would have forgotten); you put the initial poly (add n: of course, and type: gnfs), into a file, say, t.poly, and run factMsieve.pl t and kill it soon. Then copy the auto-generated parameters from the .job file (below, in bold) to the poly to get something like this: Code: n: 597647818789865479070164232377390690874759339620592468154446562002337248831301293863065913519522870900965788830826787436105784791 type: gnfs # norm 2.687898e-12 alpha -7.317079 e 1.065e-10 rroots 3 skew: 473579.03 c0: -27988440920005007752835908970188 c1: 36194624374531631102222182 c2: 2390917326532765272777 c3: -11161597941910483 c4: -11576524265 c5: 6600 Y0: -9803487406814689417760025 Y1: 20246307534533 rlim: 6800000 alim: 6800000 lpbr: 28 lpba: 28 mfbr: 55 mfba: 55 rlambda: 2.5 alambda: 2.5 (one last touch up is: because t.job file will have one of the lims lowered, reset both a/rlim values to the larger of the two). This is the simplest recipe without any variations. If the number is larger than this one, you can spend some time changing each parameter, and use some canned tricks like the 3LP trick, or the lopsided lpb (e.g. 29 and 30) for some quartics, etc etc etc. If the number is small, any time spent refining will be hardly compensated by simply shooting away the poly to a few computers with separate chosen ranges (controlled by -f and -c), and then, as usual, collecting all relations together, (optionally, remdups), and then msieve -nc. Last fiddled with by Batalov on 2013-02-20 at 04:12 Reason: (more verbosity; or else I cannot even understand what I wrote myself)

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2013-02-08, 14:03	#2058
EdH "Ed Hall" Dec 2009 Adirondack Mtns 2×19×97 Posts	+1600@43e6 (total 2000 here), and counting...

2013-02-08, 18:37	#2059
yoyo Oct 2006 Berlin, Germany 2²·3²·17 Posts	I injected 18000 curves @110M, should soon be visible on the stats page. As soon as the first curves return. yoyo

2013-02-08, 19:54	#2060
jrk May 2008 447₁₆ Posts	I've started polynomial selection.

2013-02-09, 04:20	#2061
EdH "Ed Hall" Dec 2009 Adirondack Mtns E66₁₆ Posts	+1000@43e6 (total 3000 here), and counting...

2013-02-10, 04:49	#2062
EdH "Ed Hall" Dec 2009 Adirondack Mtns 2×19×97 Posts	+1000@43e6 (total 4000 here), and counting...

2013-02-10, 17:52	#2063
EdH "Ed Hall" Dec 2009 Adirondack Mtns 3686₁₀ Posts	+1000@43e6 (total 5000 here), and counting... That's over 7000 showing in the thread, so far, but I'll let my ECM keep running until jrk posts a polynomial. Then I can see if my relations scripts are now correct.

2013-02-10, 18:19	#2064
Andi_HB Mar 2007 Germany 2³·3·11 Posts	Yoyo have done over 12500 curves @ 110.000.000 C165_4788_i5144 (B1 = 110000000, 12515 / 18000 curves)

2013-02-19, 20:01	#2065
bsquared "Ben" Feb 2007 2²×23×37 Posts	The C129 at iteration 5151 is ready for NFS.

2013-02-20, 04:54	#2068
EdH "Ed Hall" Dec 2009 Adirondack Mtns 111001100110₂ Posts	Excellent! Thank you. All worked as explained and my machines are sieving along rather well. I actually caught your unedited post and went off and achieved the same results as shown, before returning to find the rest. I think I'll work with this level for now before delving in any deeper. I have some scripts running all the machines for either ECM or sieving at the moment, but I'm looking at building a script to run the poly selection on all of them at once, too. Thanks again...