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 2008-12-30, 13:39 #1 gd_barnes     "Gary" May 2007 Overland Park, KS 2E4D16 Posts Team drive #8 k=1400-2000 n=350K-500K This is team drive #8 for No Prime Left Behind. We will be searching all k=1400-2000 for n=350K-500K. Karsten (kar_bon) has created a web page that shows details for the drive here. He maintaines a site that has almost all known Riesel primes. There is a page for the range of 300
2008-12-30, 14:12   #2
Flatlander
I quite division it

"Chris"
Feb 2005
England

31×67 Posts

Quote:
 Originally Posted by gd_barnes 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! Gary
I think having an efficient sieve is more important than missing out on a few reportable primes.

(I'm more worried about my dozens of top-5000 primes that will be pushed out soon.)

edit:

But why not start a drive for 350-352k now, and get them registered?

My reservation will finish late 01/01/09 GMT. (Looks like >20,000 factors.)

Last fiddled with by Flatlander on 2008-12-30 at 14:34

2008-12-30, 14:37   #3
gd_barnes

"Gary"
May 2007
Overland Park, KS

33×439 Posts

Quote:
 Originally Posted by Flatlander I think having an efficient sieve is more important than missing out on a few reportable primes. (I'm more worried about my dozens of top-5000 primes that will be pushed out soon.) edit: But why not start a drive for 350-352k now, and get them registered?

Well, that's a no-brainer. Why didn't I think of that? Duh.

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

Max and others, what do you think about getting the drive started on late Tues. or Weds. or Thurs. for n=350K-352K with sieving only at P=1.4T or 1.8T?

I don't want to make a big mess out of this by stopping everyone in the middle of sieving to start on LLRing and then having the sieving get put off for a long time so that we're stressing on sieving again. We could get in a nasty circle. We'll have to discuss resource allocation later today to avoid that scenario. I need to go now but I'll need to get an approximate estimated time to complete n=350K-352K so that we can have an informed discussion about it.

No worries Chris, you'll get your primes back plus plenty more with this drive. Even though we'll be knocking our own primes off the list quite a bit, there will be many more to replace them than are knocked off.

Gary

 2008-12-30, 14:39 #4 em99010pepe     Sep 2004 54168 Posts Bring the files....if you want I can set up a llrnet server. Last fiddled with by em99010pepe on 2008-12-30 at 14:40
2008-12-30, 17:15   #5
mdettweiler
A Sunny Moo

Aug 2007
USA (GMT-5)

2·55 Posts

Quote:
 Originally Posted by gd_barnes Max and others, what do you think about getting the drive started on late Tues. or Weds. or Thurs. for n=350K-352K with sieving only at P=1.4T or 1.8T?
Okay, I like that idea!

BTW @Carlos: Thanks for the offer of running a server, though that probably won't be necessary since we already have had a G8000 server all pre-readied for this effort. However, yes, we'll definitely keep you in mind in case we need any more. (For these smaller k/n pairs, server load is somewhat higher than it is at the higher k/n pairs, so we may very well need a second server for this range.)

Hey, I just thought of an idea: how about, in addition to any LLRnet servers that we have going for this range, I run a PRPnet server for it? I'm beginning to get the hang of how this whole PRPnet thing works now, and I'm planning to write some scripts later today to ensure that PRPnet will fit into our existing stats and status-page setup. Setting up a second server for the 9th Drive would not be hard at all. Not to mention that PRPnet uses LLR 3.7.1c for numbers on power-of-2 bases.

Max

2008-12-31, 02:20   #6
gd_barnes

"Gary"
May 2007
Overland Park, KS

101110010011012 Posts

Quote:
 Originally Posted by mdettweiler Okay, I like that idea! BTW @Carlos: Thanks for the offer of running a server, though that probably won't be necessary since we already have had a G8000 server all pre-readied for this effort. However, yes, we'll definitely keep you in mind in case we need any more. (For these smaller k/n pairs, server load is somewhat higher than it is at the higher k/n pairs, so we may very well need a second server for this range.) Hey, I just thought of an idea: how about, in addition to any LLRnet servers that we have going for this range, I run a PRPnet server for it? I'm beginning to get the hang of how this whole PRPnet thing works now, and I'm planning to write some scripts later today to ensure that PRPnet will fit into our existing stats and status-page setup. Setting up a second server for the 9th Drive would not be hard at all. Not to mention that PRPnet uses LLR 3.7.1c for numbers on power-of-2 bases. Max

OK, let's just run n=350K-352K sieved to P=1.4T. It'd be too messy and risky to wait for higher factors from Ian and myself. I could actually complete my P=1.8T-3.4T range in 2 days if I put it on all 9 of my working quads but that would take me quite a bit of time to do because I'd have to piecemeal out the P-ranges that haven't been done yet. I also don't want to impose upon Ian to do the same with his range. It's just time-consuming to bring all the factors back together from so many cores. By just using the P=1.4T file, after everyone is done with their sieving, we'll just systematically apply all the factors P>1.4T to the entire file in an orderly fashion. I need order for my disorderly mind. lol

Running it to n=352K should work and take the pressure off of the sieving effort a little. It'll be a while before the 5000th prime is at 352K. (>4-5 weeks I think)

Max, let's hold off on the PRPnet server since we need to complete the range within a fairly short timeframe. It will take a little time for people to download everything and orient themselves to the new server software. Although that shouldn't take each person too long, I don't want to be derailed by any potential issues that there could be in the new software. Instead, let's plan on using PRPnet for n>352K after the sieving is done. As for running a server for this range, let's just use port 8000 that you've already set up. That was its intent.

I'm not going to recommend any kind of resource allocation to anyone. Everyone knows the situation on the 5000th place prime. Likely I'll put 2 quads in on the LLRing effort but may put as many as 5-6 on it depending on how popular the effort is and how quickly the 5000th place prime is moving up. In other words, I'll wait to see what the response is before shifting anything more than 2 quads. This is a good effort for people with lesser resources and I don't want the higher-resource folks to take most of the fun.

Max, have I sent you the n=200K-500K file for k=1005-2000 sieved to P=1.4T? If not, I'll send it to you right away. Just let me know. Let's plan on loading n=350K-351K in the server to get that cracking almost immediately at fairly high speed. We'll leave n=351K-352K for manual reservations in n=100 pieces.

Keep in mind that n=100 ranges will actually be ~70%+ larger than n=100 ranges on the 1st drive at the same n-range. That is about ~67% more k's plus likely 3-5% more candidates due to a sieve to P=1.4T vs. 5T.

I'll get the drive set up with manual-reservation files posted for n=351K-352K sometime in the morning between 6 and 8 AM GMT (midnight to 2 AM my time). Please plan on completing any manual reservation in < 2 weeks to make sure we stay ahead of the 5000th place prime. If an n=100 file is too big for you, you'll be able to reserve part of a file if you want. So that people have an idea of the size of the files, I'll post a # of candidates by each file.

One more thing Max...Please look on Karsten's pages and see who has reservations in the area. We already know about Thomas and I think Adam has a reservation or two in the area. I will PM them about the start of our effort. I doubt we'll impact anyone with n=350K-352K but don't want to give a bad perception if we are.

Let's move the goal for completing sieving back to Jan. 20th. I should still complete mine by Jan. 15th-16th because I'll pull quads off of port 5000 to put on LLRing n=350K-352K. The 5000th place prime shouldn't be near n=352K by the 20th but we don't want to push our luck in that regard. PrimeGrid has really been submitting the primes lately.

Thanks for being flexible everyone!

Edit: Would it make more sense to use a server by Carlos since he has offered? I'm going to Vegas from Thursday to Wednesday. If we do that, we'd just use his server for this range and plan on using port 8000 for most of the LLRnet ranges for n>352K.

Gary

Last fiddled with by gd_barnes on 2008-12-31 at 02:31

2008-12-31, 05:09   #7
mdettweiler
A Sunny Moo

Aug 2007
USA (GMT-5)

2×55 Posts

Quote:
 Originally Posted by gd_barnes Max, let's hold off on the PRPnet server since we need to complete the range within a fairly short timeframe. It will take a little time for people to download everything and orient themselves to the new server software. Although that shouldn't take each person too long, I don't want to be derailed by any potential issues that there could be in the new software. Instead, let's plan on using PRPnet for n>352K after the sieving is done. As for running a server for this range, let's just use port 8000 that you've already set up. That was its intent.
Okay, that sounds good, especially in light of how there have been a few new issues that have cropped up with PRPnet as described in the PRPnet thread over at CRUS. Thus, I'm thinking that we shouldn't even consider setting up a second server until we've gotten things running somewhat more smoothly.

Quote:
 Max, have I sent you the n=200K-500K file for k=1005-2000 sieved to P=1.4T? If not, I'll send it to you right away. Just let me know. Let's plan on loading n=350K-351K in the server to get that cracking almost immediately at fairly high speed. We'll leave n=351K-352K for manual reservations in n=100 pieces.
No, you haven't sent me the sieve file. As soon as you can send it to me I'll get 350K-351K loaded into G8000.

Quote:
 Keep in mind that n=100 ranges will actually be ~70%+ larger than n=100 ranges on the 1st drive at the same n-range. That is about ~67% more k's plus likely 3-5% more candidates due to a sieve to P=1.4T vs. 5T. I'll get the drive set up with manual-reservation files posted for n=351K-352K sometime in the morning between 6 and 8 AM GMT (midnight to 2 AM my time). Please plan on completing any manual reservation in < 2 weeks to make sure we stay ahead of the 5000th place prime. If an n=100 file is too big for you, you'll be able to reserve part of a file if you want. So that people have an idea of the size of the files, I'll post a # of candidates by each file. One more thing Max...Please look on Karsten's pages and see who has reservations in the area. We already know about Thomas and I think Adam has a reservation or two in the area. I will PM them about the start of our effort. I doubt we'll impact anyone with n=350K-352K but don't want to give a bad perception if we are.
Okay, will do.

Quote:
 Let's move the goal for completing sieving back to Jan. 20th. I should still complete mine by Jan. 15th-16th because I'll pull quads off of port 5000 to put on LLRing n=350K-352K. The 5000th place prime shouldn't be near n=352K by the 20th but we don't want to push our luck in that regard. PrimeGrid has really been submitting the primes lately. Thanks for being flexible everyone! Edit: Would it make more sense to use a server by Carlos since he has offered? I'm going to Vegas from Thursday to Wednesday. If we do that, we'd just use his server for this range and plan on using port 8000 for most of the LLRnet ranges for n>352K.
Hmm...well, we've already got G8000 set up, so that would probably be quicker to get started with. Not to mention that since it has a status page and automatic copy-off for its results files, so it will be easier to manage and quicker to process results.

Max

 2008-12-31, 05:59 #8 gd_barnes     "Gary" May 2007 Overland Park, KS 33×439 Posts OK, port 8000 it is. Hopefully I'll have no internet blips this next week like I had in the last week. They have generally been quite rare. BTW, what the heck was I thinking? The k=1005-2000 for n=200K-500K file sieved to P=1.4T is in a link in the 1st post of this thread. lol Load 'er up with n=350K-351K using that file. Gary
2008-12-31, 06:03   #9
mdettweiler
A Sunny Moo

Aug 2007
USA (GMT-5)

625010 Posts

Quote:
 Originally Posted by gd_barnes OK, port 8000 it is. Hopefully I'll have no internet blips this next week like I had in the last week. They have generally been quite rare. BTW, what the heck was I thinking? The k=1005-2000 for n=200K-500K file sieved to P=1.4T is in a link in the 1st post of this thread. lol Load 'er up with n=350K-351K using that file. Gary
Okay, I'll get it loaded into G8000 ASAP.

 2008-12-31, 08:50 #10 gd_barnes     "Gary" May 2007 Overland Park, KS 33×439 Posts Due to problems with my dynamic IP address affecting my servers, we will delay starting the n=350K-352K drive until late Wednesday or early Thursday. n=350K-351K will be run on a new server of David's. Details will be in the drive page. Gary
2008-12-31, 21:13   #11
mdettweiler
A Sunny Moo

Aug 2007
USA (GMT-5)

2×55 Posts

Quote:
 Originally Posted by gd_barnes Due to problems with my dynamic IP address affecting my servers, we will delay starting the n=350K-352K drive until late Wednesday or early Thursday. n=350K-351K will be run on a new server of David's. Details will be in the drive page. Gary
Hi all,

As David just recently posted in the LLRnet servers thread, he's started up a new server on nplb.ironbits.net port 8000 (IB8000) loaded with n=350K-351K for k=1005-2000. Everyone can go ahead and shift their machines over there as soon as they're ready.

Max

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