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Old 2006-04-25, 06:21   #1
MooooMoo
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Default Range reservations thread

All ranges from 1-500M have been completed, so reserve in the "pre sieved range reservation thread". This thread is only for historical purposes and for the stats page on http://www.twinprimesearch.org

Currently completed and reserved ranges (sieved by users):

1-100K MooooMoo (complete, no primes)
100K-1M John Renze (complete, no primes)
1M-1.5M victor (complete, no primes)
1.5M-10M John Renze (complete, 4 primes)
10M-15M victor (complete, 1 prime)
15M-20M MooooMoo (complete, no primes)
20M-22M grobie (complete, no primes)
22M-24M Zeus (complete, no primes)
24M-29M pacionet (complete, 1 prime)
29M-30M Zeus (complete, no primes)
30M-40M MooooMoo (complete, 1 prime)
40M-100M John Renze (complete, 11 primes)

Currently completed and reserved ranges (sieved by gribozavr):
Code:
100M-115M	pacionet	complete (3 primes)
115M-125M	victor		complete (no primes)
125M-130M	MooooMoo	complete (1 prime)
130M-132M	fetofs		complete (no primes)
132M-135M	MooooMoo	complete (no primes)
135M-140M	lsoule		complete (5 primes)
140M-145M	CedricVonck	complete (1 prime)
145M-150M	gribozavr	complete (no primes)
150M-155M	lsoule		complete (no primes)
155M-160M	pacionet	complete (no primes)
160M-165M	lsoule		complete (no primes)
165M-180M	MooooMoo	complete (2 primes)
180M-185M	lsoule		complete (no primes)
185M-195M	pacionet	complete (4 primes)
195M-200M	Citrix		complete (3 primes)
200M-205M	lsoule		complete (1 prime)
205M-210M	victor		complete (no primes)
210M-220M	lsoule		complete (3 primes)
220M-225M	MooooMoo	complete (no primes)
225M-235M	lsoule		complete (3 primes)
235M-240M	antiroach	complete (no primes)
240M-255M	rogerson	complete (3 primes)
255M-260M	MooooMoo	complete (3 primes)
260M-270M	lsoule		complete (3 prime)
270M-272M	zeus		complete (no primes)
272M-275M	John Renze	complete (no primes)
275M-280M	pacionet	complete (2 primes)
280M-285M	lsoule		complete (no primes)
285M-290M	MooooMoo	complete (1 prime)
290M-295M	lsoule		complete (1 prime)
295M-300M	pacionet	complete (1 prime)
300M-305M	MooooMoo	complete (no primes)
305M-310M	lsoule		complete (1 prime)
310M-325M	John Renze	complete (4 primes)
325M-330M	Citrix		complete (no primes)
330M-335M	lsoule		complete (1 prime)
335M-350M	victor		complete (4 primes)
350M-360M	lsoule		complete (1 prime)
360M-365M	MooooMoo	complete (1 prime)
365M-370M	pacionet	complete (2 primes)
370M-375M	lsoule		complete (1 prime)
375M-400M	John Renze	complete (7 primes)
400M-415M	pacionet	complete (1 prime)
415M-420M	MooooMoo	complete (no primes)
420M-450M	John Renze	complete (9 primes)
450M-460M	victor		complete (1 prime)
460M-465M	gribozavr	complete (no primes)
465M-470M	pacionet	complete (no primes)
470M-485M	gribozavr	complete (1 prime)
485M-500M	pacionet	complete (2 primes)
500M+ reserve in "pre sieved range reservation thread"
Rules for this thread:

1.) Post here before starting on a new range.

2.) Choose the lowest range available, but your range can be of any size.

3.) When you're done with the range, post any primes here (even if they aren't twin primes), and mark the range as complete.

Remember, we're looking for primes of the form k*2^195000 +/- 1. Only k changes; the n remains at 195000 until we find a new twin prime. Use NewPGen's "twin search" feature. Do not click "include even values of k."

Software info:

NewPGen can be found here:

http://primes.utm.edu/programs/NewPGen/

and LLR can be found here:

http://www.mersenne.org/gimps/

(choose llr370.zip)

Last fiddled with by MooooMoo on 2006-12-16 at 11:41
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Old 2006-04-25, 13:44   #2
John Renze
 
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I'll take 100K-1M
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Old 2006-04-25, 14:40   #3
victor
 
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I take 1M-1,5M
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Old 2006-04-25, 14:41   #4
John Renze
 
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On second thought, the ranges should be a bit bigger than that. I'll go to 10M instead.

Edit: Sorry, victor. Didn't see you there. 1-1.5 M is yours. I'll still go ahead and sieve the rest up to 10M anyway.

Last fiddled with by John Renze on 2006-04-25 at 14:43
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Old 2006-04-26, 11:03   #5
victor
 
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1M-1.5M victor (complete) (no prime)
10M-15M victor
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Old 2006-04-26, 16:29   #6
biwema
 
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I strongly recommend to distribute the sieving part as well.

If the exponent is fixed, the sieving speed does not slow down significantly if the range is larger. So Sieving a 10G range is just a few percent slower than sieving 1M (when sieving passes 1G).
(I have 80M/sec at 1T with a 10G range)

So, if you de distributed sieving, and sieve 1000 times as far (together), you can save 40 % of the LLR tests.
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Old 2006-04-26, 17:30   #7
pacionet
 
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Quote:
Originally Posted by biwema
I strongly recommend to distribute the sieving part as well.

If the exponent is fixed, the sieving speed does not slow down significantly if the range is larger. So Sieving a 10G range is just a few percent slower than sieving 1M (when sieving passes 1G).
(I have 80M/sec at 1T with a 10G range)

So, if you de distributed sieving, and sieve 1000 times as far (together), you can save 40 % of the LLR tests.
I think it is a good idea but this would require 2 different projects or , at least, 2 subprojects of the project ("Twin Primes Search" and "Twin Primes Sieving"). The second subproject requires also a web page with the sieve output files that the user of the first project can download ... it is not so simple. What do you think, MooMoo ?

If all agree we can study a way to do both things (sieving and search) distributed.

I am planning a web site on Twin Prime Search , which, at the very beginning, will be only informative pages on the search, on the ranges, etc. (for example , email to reserve range).

But if we share the project in two subprojects, maybe I can work only at one of the two.

Let me know what all of you think of the way to organize the project/s.
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Old 2006-04-26, 19:02   #8
victor
 
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If you all know how to use a wiki, we could very simply organize everything with a mediawiki (http://www.mediawiki.org/wiki/MediaWiki)...
We only need someone to host it, and a little explainations. By example, a category 'reserved ranges' could auto-index all ranges... well, hard to explain but easy to do ;)

(could an admin split these last posts into a new topic?)
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Old 2006-04-26, 19:17   #9
pacionet
 
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Personally I don't like wiki style for project like this, if we vote I vote for a classic web site like GIMPS or distributed.net.

Anyway I accept the decisions of this group.
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Old 2006-04-26, 19:25   #10
victor
 
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I also like web sites like distributed.net, but IMO gimps website (if we hadn't this forum) is not very practical, by example when you seek something it's not easy to find it...
and the other problem with websites is that someone would have to spend a lot of time into php programming, because if we don't want anybody to have the ftp & sql passwords, we will need an admin panel to modify things, etc...
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Old 2006-04-27, 02:14   #11
MooooMoo
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Range update:

1-100K MooooMoo (complete)
100K-1M John Renze
1M-1.5M victor (complete)
1.5M-10M John Renze
10M-15M victor
15M-20M MooooMoo
20M or higher - available

In case there's future confusion, I'd like to add that 15M-20M is 15,000,001 to 20,000,000, NOT 15,999,999 to 20,999,999.

-----------------------------------------

pacionet and victor,

It'd be really nice if one of you created a web site for this, but it's not that necccessary now. It might be needed as the project expands, though, so if you want to create one, I'd suggest the format of distributed.net. I don't really like wiki style for websites.

-----------------------------------------

biwema,

Distributed sieving is nice, but I prefer to wait until we have more members. There're a lot of problems involved with distributed sieving (design of a factor submission page, automatically updating the remaining k's file, etc.). Also, I'm not sure whether LLRers would enjoy updating their files on a dailiy basis.

However, if you want to sieve, you're welcome to sieve a range from 1000M-10000M or so. By the time we reach that range, we can download your sieve output files and LLR test the remaining k's.
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