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Thread: Giving Thanks Challenge

  1. #1

    Giving Thanks Challenge

    For those not aware PrimeGrid is currently running a challenge to crunch SoB/PSP combined sieve for 24 hours.

    Is there any chance that when the dust is settled we can have a bit of an analysis as to the current state of the sieve effort?

    A nicely coloured graph would be very nice if at all possible!



  2. #2
    Moderator Joe O's Avatar
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    Quote Originally Posted by Joe O View Post
    In the attached graph, factors found for the combined sieving effort are color coded as follows:
    PSP
    PSP for July 2009
    SB
    SB for July 2009
    SB since July 16, 2009


    As you can see, the leading edge has reached 51500T (51.50P).
    Is this what you had in mind?
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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    Joe O

  3. #3
    Is that up to date? from looking at http://www.primegrid.com/stats_psp_sieve.php (currently disabled during the challenge) PrimeGrid was crunching in the 58P range even before the challenge started.

    CW

  4. #4
    I think I'm right in saying that primegrid dump their factors in big lumps, is that correct? Maybe they haven't done a dump for a while?



  5. #5
    Moderator Joe O's Avatar
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    I posted that in the Mersenne forum on Aug 5, 2009. http://www.mersenneforum.org/showthread.php?t=2666

    I was just checking if that is what you want. I plan to update it soon.

    And Yes, they were up to 58.5P as of Thursday, November 12, 2009.
    Last edited by Joe O; 11-14-2009 at 09:24 PM.
    Joe O

  6. #6
    That is exactly what I had in mind, thanks



  7. #7
    Quote Originally Posted by Matt View Post
    I think I'm right in saying that primegrid dump their factors in big lumps, is that correct?
    Nope, they dump them pretty much as soon as they find them. Which is good so no PRP tests are done for candidates with a known factor just because it hasn't been reported.

    This is much easier to see with the PSP Sieve style scoring where factors are credited immediately: http://stats.free-dc.org/stats.php?p...name=PrimeGrid

  8. #8
    Moderator Joe O's Avatar
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    In the attached graph, SoB factors found for the combined sieving effort are color coded as follows:
    2009-11-22
    2009-08-01
    2009-05-02


    As you can see, the leading edge has reached 60500T (60.50P).
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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    Joe O

  9. #9
    What are the red dots?



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