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-   -   Sieving drive for k=1005-2000 n=200K-500K (

Mini-Geek 2008-12-30 12:49

1 Attachment(s)
4000G-4050G complete, factors attached. I'll sieve another 50G after I finish the next section in my main drive processing, which should be on the 2nd. For now I'm not reserving any more.

gd_barnes 2008-12-30 13:39

With the primes just pouring in at top-5000 as a result of PrimeGrid running an effort on the Proth side similar to what we are currently for k<1200 and at lower n-ranges, it looks like n=350K will be at n=350K by Jan. 5th or earlier.

Since people reserved and divided up their ranges on their cores assuming a Jan. 15th completion date, we'll stick with our plans here but I'll put another quad on it starting later today or on Weds that will boost the reserved ranges to P=~7T. On Jan. 5th, my 1st 2 quads will finish and I'll be able to do another P=1.6T range by Jan. 15th. That would put it at P=8.6T so we'd likely just need a few more smaller reservations to get us where we need to be.

The drive will still be n=350K-500K but the first few primes may be non-top-5000. I'm now estimating that the 5000th prime will be at n=351K by the time we start.

As if we hadn't done so already, PrimeGrid has demonstrated conclusively that our method of searching for primes is the wave of the future! :smile:


MyDogBuster 2008-12-30 15:29

[quote]Ian, how far from completion are you on the P=1.4T-1.8T range? If you're < 3 days from completion, we'll wait on it. If we're gonna be undersieved for part of it, we may as well minimize how much we are undersieved by. lol[/quote]

My trusty countdown timer says that my 1.4-1.8T sieves won't be done until Jan 4th about 10PM, about 5 1/2 days.

I'm up to 1.506T on the 1.4-1.6 sieve.

Flatlander 2008-12-30 15:30

My reservation will finish late 01/01/09 GMT. (Looks like >20,000 factors.)[/quote]
In case you didn't see my second edit.

gd_barnes 2009-01-01 04:29

I moved all of the posts specifically related to the now-running n=350K-352K range to the 8th drive thread.

gd_barnes 2009-01-01 10:03

Reserving P=5900G-7100G. I'm adding a quad to the effort. ETA is early on Jan. 16th.

My current range on 2 quads will be done very early on Jan. 6th. At that point, I think we'll have everyone's factors up to either P=3800G or P=4050G. We'll remove all the factors from the file and calculate an optimum sieve depth for the entire range. I'm estimating it will be P=9000G-10000G somewhere.

With the above 2 quads done on Jan. 6th, I'll be able reserve another P=1600G range that should also complete on Jan. 16th. Taking that into account, we'd likely only need another P=500G-1000G worth of reservations from everyone to complete the sieving.

With the pressure off now, Jan. 20th is still what we're shooting for but if we can be done a little early, it'll be that much sooner we can get down to some serious prime finding. :smile:


Flatlander 2009-01-01 15:59

1 Attachment(s)
3400-3600G complete.
3600-3800G will finish in a few hours.

Flatlander 2009-01-02 13:47

1 Attachment(s)
3600-3800G complete.

MyDogBuster 2009-01-03 03:32

We could use more help in the sieving effort. The quicker we get the sieving done, the quicker we get pairs loaded to test. I, for one, hate wasting time testing pairs that I shouldn't have to.

We are booked to 7.1T, we need to get to 9T to have an optimal sieve.

Everyone testing the pairs should help with the sieve.

Mini-Geek 2009-01-03 03:58

Reserving 7100G-7200G.

IronBits 2009-01-03 04:45

I'd love to help, but I don't recall how to do a darn thing with sieve, nor what software or how to go about it.
I asked Max to send me a care package that I can unzip to some directory and run some program on 8 cores, Intel I7, Vista 64bit.
Let's see what happens...

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