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Old 2009-02-20, 08:40   #34
gd_barnes
 
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Quote:
Originally Posted by PCZ View Post
Yes i can do that.
Currently most of my computers are running 32bit though.
I'll need a day or 2 to get a 64bit OS on more of them.

At what depth should i start sieving ?
500G ranges should be OK to start, then see how it goes from there.
You just need the factors.txt files sent you yes ?

See the sieving drive here. Everything is explained there and the file is posted there. Please post your reservation when you are ready to start there.

As for what size range to sieve on one high-speed 64-bit quad: I suggest sieving a P=250G range on each core for a total of P=1000G (1T). It is taking my 64-bit 2.4 Ghz Intel's ~15-16 days and that is a reasonable length for that effort. After that is done, if you wish, then you can reserve another similar-size range.

As for what P-ranges to sieve, it's a bit of an unusual situation: As shown in the thread above, the first available ranges that would be available for 4 cores are:
4250G-4500G
4750G-5000G
5250G-5500G
5750G-6000G

The reason for the non-contiguous P-ranges is that Ian found that his slower AMD was going to take 74 days to do P=500G per core. At the same time that I asked you if you could put a quad on the effort, I asked him to halve his reservation on each core. Since both of you agreed, we have the above non-contiguous ranges that need to be filled in.

If you aren't too fond of the non-contiguous ranges, it's no big deal. I can start on the above by ~Feb. 26th. As you'll be able to see by the 1st post in that drive, P=6250G is the 1st unreserved contiguous range that you can start with.

Yes, all that I need is the factors.txt file.

Thanks for offering to help sieve and messing with upgrading a machine or 2 to a 64-bit O.S. I'm thinking that we'll need to go to P=15000G (15T) before we can break off the n=500K-600K range, which will then keep our 8th drive moving along.


Gary
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Old 2009-02-22, 15:34   #35
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3125*2^405324-1 is prime.
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Old 2009-02-24, 02:25   #36
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I saw that Brian found a couple of nice primes for n>600K on his work here. Excellent!

I just wanted to remind everyone to report the n-ranges completed on their k's here every couple of weeks or so. It helps Karsten keep his pages up to date.


Thanks,
Gary
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Old 2009-02-24, 10:10   #37
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Gary do you have a Prime radar ? :)
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Old 2009-02-24, 10:39   #38
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I check the top-5000 page status 2-3 times a day.

Keeping up with what other projects/individuals are doing helps in the direction of this project at times. For example, when I saw that PrimeGrid was searching all k<1200 (since increased to some higher k) on the Proth side to n=600K, I remembered that there were a huge # of holes on the Riesel side for k=1003-2000/n=50K-500K, hence I started the sieving effort that is now the 8th/9th drives. Those 2 drives have been our most successful to date.
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Old 2009-02-27, 13:48   #39
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Quote:
Originally Posted by gd_barnes View Post
..., hence I started the sieving effort that is now the 8th/9th drives. Those 2 drives have been our most successful to date.
In live color
http://stats.ironbits.net/statsnew/drive_progress.php
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Old 2009-02-27, 15:05   #40
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Holy crap! Nice work
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Old 2009-02-28, 13:03   #41
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Friggin cool, man. Very nice!
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Old 2009-03-07, 13:50   #42
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3139*2^415801-1 is prime.

The 93 ks mentioned here:
http://mersenneforum.org/showpost.ph...7&postcount=12
are tested from 400k to (at least) 410k.
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Old 2009-03-18, 04:30   #43
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Quote:
I just wanted to remind everyone to report the n-ranges completed on their k's here every couple of weeks or so. It helps Karsten keep his pages up to date.

Thanks,
Gary
I've been posting stuff at this thread (suggested by Karsten) but nothing is being updated from there.
http://www.mersenneforum.org/forumdisplay.php?f=89

Any suggestions on where to post things for k>2000. I'd hate to have to post things in 2 places.

Last fiddled with by MyDogBuster on 2009-03-18 at 04:32
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Old 2009-03-18, 08:22   #44
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Quote:
Originally Posted by MyDogBuster View Post
I've been posting stuff at this thread (suggested by Karsten) but nothing is being updated from there.
http://www.mersenneforum.org/forumdisplay.php?f=89

Any suggestions on where to post things for k>2000. I'd hate to have to post things in 2 places.
I'm sure that it is Karsten's intent is to update the rieselprime.org pages from that thread (since he started it) or this one so you/we shouldn't have to post primes/statuses in both places. He just hasn't gotten to it yet. I noticed that he's slowly getting all of our n=50K-200K primes and some of our n=200K-350K primes for k=1005-2000 added to the pages...a huge amount of work!


Gary

Last fiddled with by gd_barnes on 2009-03-18 at 08:23
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