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-   -   Factoring humongous Cunningham numbers (https://www.mersenneforum.org/showthread.php?t=5722)

ValerieVonck 2007-12-28 23:25

The cofactor is prime:

Andi47 2007-12-31 09:07

[QUOTE=xilman;121399]
I'll be liasing with Tom Womack shortly, so he can update his reservation system if he wishes.
Paul[/QUOTE]

[quote=Tom's reservation table]41 numbers available for reservation; 7 reserved[/quote]

Have You already talked to Tom?

fivemack 2007-12-31 12:49

Paul talked to me a while back; I thought I would wait in case there was a huge flood of ECM, as happened back in July, but now I'm down to getting a couple of ECM mails each day, and someone's poked me, so I have merged the tables.

'565 numbers available for reservation; 7 reserved' - have fun!

Andi47 2007-12-31 14:40

[QUOTE=fivemack;121838]
'565 numbers available for reservation; 7 reserved' - have fun![/QUOTE]

Thanks! *starting sieves*

xilman 2008-01-03 21:01

[QUOTE=Andi47;121843]Thanks! *starting sieves*[/QUOTE]New update is uploading right now (may even have finished).

Another twenty or so factorizations and the number of composites is down to 550.

Unfortunately, I'm getting a few repeated factorizations of the smaller composites. The rule is that the first to hit my mailbox wins, in some sense.

Gratifying to seem some of the long-timers who have stuck with the ECMNET server during the dry time of the last couple of months starting to pick off ECM factors again.


Paul

em99010pepe 2008-01-05 19:32

Paul,

I can't connect to the ECMNET server...
Carlos

xilman 2008-01-05 20:40

[QUOTE=em99010pepe;122269]Paul,

I can't connect to the ECMNET server...
Carlos[/QUOTE]A client is running amok and sending in an unlimited number of duplicate factors. The guilty account is [email]japke@tweakers.net[/email]. I've sent email to Japke but he's not yet been able to do anything about it.

I've received circa 1500 emails so far today ...

I ave restarted the server and a couple of people have managed to connect so far.

Paul

em99010pepe 2008-01-05 21:03

I started 4 cores but I'm getting the same work...

xilman 2008-01-05 21:59

[QUOTE=em99010pepe;122276]I started 4 cores but I'm getting the same work...[/QUOTE]Which is entirely reasonable. The server is currently handing out over 1000 curves at B1=1M. Unless you have incredibly fast cores and/or your check-in time is measured in days, you are unlikely to complete 1000 curves in a single period. Even if you do, it doesn't matter because the expected factors per cpu day is very flat in the neighbourhood of the optimum B1 level.


Paul

xilman 2008-01-05 22:04

[QUOTE=xilman;122279]Which is entirely reasonable. The server is currently handing out over 1000 curves at B1=1M. Unless you have incredibly fast cores and/or your check-in time is measured in days, you are unlikely to complete 1000 curves in a single period. Even if you do, it doesn't matter because the expected factors per cpu day is very flat in the neighbourhood of the optimum B1 level.


Paul[/QUOTE]I just checked. Your systems are sending in 6 curves per check-in period.

No problem, AFAICT, with the server sending out 1010 curves to each of your clients if it expects to receive 24 in return.

What's your concern?


Paul

em99010pepe 2008-01-05 22:28

[quote=xilman;122280]

What's your concern?
[/quote]

I stupid one because I don't understand what you say, you talk in binary!:

I received the same work, this one: "Received 11+9_184 (length 177) : ECM with B1=1000000 * 1011 curves", for 4 different cores. Am I doing the same work on the 4 cores? BTW, 1011 curves are done in less than 4 hours on a single core...At this stage 23 seconds per curve...I just don't want to make duplicate work, that's my concern...maybe I am saying something stupid...

Carlos


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