ECM work on 4788:2549.c170
 

Just in case we lose the "ECM completed" info [strike]before[/strike] when Syd gets it transferred over to the new DB, here is what we have so far:[code] B1 B2 Crvs Who
--------------------------------------------------
11000000 (default?) 5 josh
11000000 35133391030 27 firejuggler
43000000 178426462987 100 Frank Schickel
43000000 240490660426 490 Andreas Schindel
110000000 769593044236 465 Andreas Schindel
110000000 769593044236 95 EdH
110000000 769593044236 54 EdH
110000000 761244805240 14 EdH
110000000 776278396540 78 EdH
110000000 776278396540 106 EdH
110000000 1589211473866 1000 Jayson R. King
110000000 1589211473870 1000 Jayson R. King
260000000 2597319715006 161 Andreas Schindel
260000000 2716922571100 518 Andreas Schindel
260000000 2716922571100 462 Andreas Schindel
260000000 2716922571100 35 Andreas Schindel
260000000 2716922571100 91 Andreas Schindel
260000000 2716922571100 77 Andreas Schindel
260000000 3178559884516 1140 em99010pepe
260000000 3178559884520 257 Andreas Schindel
260000000 3178559884520 5 Frank Schickel
260000000 3178559884520 105 Frank Schickel
260000000 3178559884520 1863 Greg
260000000 3178559884520 4 EdH
260000000 6356857306816 10 Frank Schickel
4200000000 142960881753708 4 Frank Schickel
4200000000 157651994607000 3 Frank Schickel[/code]
Progress:[code]
09/11 44.49% of t55
09/14 44.81% of t55
09/15 51.60% of t55
09/16 58.24% of t55
09/25 60.2 % of t55
10/02 63 % of t55
10/05 85 % of t55[/code]

Good lord, how much RAM did these curves at B1=4.2e9 require ?

[quote=debrouxl;229716]Good lord, how much RAM did these curves at B1=4.2e9 require ?[/quote]I don't know, but it could have been quite small. If using GMP-ECM the -maxmem parameter sets an upper limit to memory use.

Paul

[QUOTE=xilman;229719]I don't know, but it could have been quite small. If using GMP-ECM the -maxmem parameter sets an upper limit to memory use.

Paul[/QUOTE]

Paul wanna help me figure this out I can't seem to get aliquet or ecm to work for me lol.

[QUOTE=debrouxl;229716]Good lord, how much RAM did these curves at B1=4.2e9 require ?[/QUOTE]A lot....but the system actually remained more responsive than when I ran this huge P-1[code]9000000000 8344912590100000 1 Frank Schickel[/code]and P+1 work[code]4000000000 2086226291290000 3 Frank Schickel[/code]I couldn't even get Task Manager to come up during the P+1 work! Luckily I left it running when I went to bed and it finished overnight.

The ECM curves took ~6 hours each and >10GB of RAM (check out the page faults; this sucker was swapping like crazy during stage 2!)

PS. Andi47, here's the -v details for 4.2e9, default B2:[code]Expected number of curves to find a factor of n digits:
35 40 45 50 55 60 65 70 75 80
9 25 76 255 935 3718 15884 72435 350460 1790896[/code]

[QUOTE=xilman;229719]I don't know, but it could have been quite small. If using GMP-ECM the -maxmem parameter sets an upper limit to memory use.

Paul[/QUOTE]Silly me, I forgot to limit the RAM the first time!

[QUOTE=schickel;229756]
PS. Andi47, here's the -v details for 4.2e9, default B2:[code]Expected number of curves to find a factor of n digits:
35 40 45 50 55 60 65 70 75 80
9 25 76 255 935 3718 15884 72435 350460 1790896[/code][/QUOTE]

Thanks. So if I have calculated correctly, we currently have 44.81% of t55.

4 more curves (at a slightly lower B2, 950 curves needed for t55). Would have had one more, but had an unexplained shutdown on the last curve.... :sad:

[quote=science_man_88;229727]Paul wanna help me figure this out I can't seem to get aliquet or ecm to work for me lol.[/quote]
If you're interested, I have the procedure I use to install aliqueit onto an Ubuntu system, available on line at [URL="http://www.starreloaders.com/edhall/AliWin/AliqueitLinstall.html"]Steps to install and set up Aliqueit on an Ubuntu computer[/URL].

It is a work-in-progress at this point, but should be usable. Feedback here is welcomed.

As for ecm, check out the later posts in the 4788 thread. Also note that gmp-ecm is available through the repositories for most linux distros, but for some to use it, it is called via gmp-ecm rather than ecm. For Windows, I've only seen it as ecm.exe.

462 curves at B1=26e7, B2=2716922571100

Together with EdH's 106 curves at 11e7 reported [URL="http://www.mersenneforum.org/showpost.php?p=229912&postcount=994"]here[/URL], we have reached a total of 51.6% of t55.

I finished 1000 more curves @ B1=11e7, B2=1589211473866 (again using -B2scale 2), making 2000 total.

I'm stopping my ECM run for now.

[color=gray]Weird. My B2 is 1589211473866 (same as the first time I reported) yet the DB changes it into B2=1589211473870. Hardly a difference, but it is curious.[/color]