20071215, 17:06  #34 
Apr 2003
1100000100_{2} Posts 
It's in Test mode at the moment.
You can already opt in for PSP LLR on the "your account" page but at the moment only a small number of WU is handed out to make sure everything works correct. The second set of 100 WU is handed out at the moment while the data from the first set comes in. Acording to Rytis everything looks fine. 
20071217, 11:04  #35 
Jun 2005
2^{2}·3·31 Posts 
Too soon, all this... It's nice to find primes, but we should still sieve some months; I would even prefer to sieve until the threshold of computability.
If there is any way to slow down the release of these numbers (only a handful a day or so), you should do so. IMO. H. 
20071220, 13:44  #36 
Apr 2003
772_{10} Posts 
the BOINC server is now handing out PSP llr test. We are out of the beta test and in "production"
@hhh: I think it is not to early to do the llr testing. Our goal is to find the the first prime per k and not to test all "n". And when you look at the results comming back from sieving you can see that we are not undersieved for the level of llr testing we are doing now. 
20071221, 11:39  #37  
Jun 2005
2^{2}·3·31 Posts 
Well, I have some reasons for my belief; I post about it from time to time, but never get an answer, probably because finding primes is more sexy then stupid sieving. Or perhaps because my posts are too long and nobody cares to read.
I will continue to post, but first I will recall what I wrote at different locations. For instance here: http://www.rieselsieve.com/forum/viewtopic.php?t=1288 Quote:
Why is it wrong? Because the factor is worth much more than 1 day of work. If it corresponds to an (average) test with n=25M, it saves WEEKS of work. And even if you have a 3/4 chance of finding a prime before n=25M, and to never need this factor, you still have a 1/4 chance to need it later, and to save say one week of work. Additionally, the sooner you sieve, the more valuable factors you find, and the higher your efficiency is. And the sooner you start LLRing, the more factors are passed by and the more tests are going to be run although you could have found a factor in no time. If you sieve only one year full speed, you will have done all the sieving, you can sit back and do nothing but LLR. If you start LLR now, you get a prime in half a year and are happy, you can print it out and put at your wall, but it doesn't improve your efficiency at all (please don't speak about the 2% speed increase in sieving. It's ridiculous compared to fully saved LLR tests). One cannot object my reasoning without (a) exterior factors like psychology that I didn't take into account, or (b) statistics that prove that sieving is indeed really too highly advanced. But in this case, it should be stopped completely, and nobody seems to be suggesting this. I would like to know these exterior factors. Yours H. 

20071221, 20:54  #38 
Dec 2004
100101011_{2} Posts 
hhh,
I had a huge long post trying to answer your questions and it was lost due to login??? ARRGGGHHHH!!!! ANyways long story short, NO we shouldn't stop sieveing but Yes we have to do more llr. Long story short. Assume we sieve to 9000T and stop. By doing this we will find 100% of the factors from 0T to 9000T. What have we done thus far?? We have already sieved to roughly 1700T about 20% of the work. With this first 20% we already found about 85% of the factors we would expect to find between 09000T. If we keep extended to say 500000T which is HUGE!!! and would probably take our life time to complete. We would have completed 0.3% of the work and already found about 55% of the factors we would ever find. In order to complete this project by sieve we would have to sieve to roughly. p=2^25000000, 5000000T is less than p=2^70. Last fiddled with by VJS on 20071221 at 20:58 
20071222, 10:06  #39 
Jun 2005
2^{2}×3×31 Posts 
All right, if you want to have the long story short, let me ask some questions.
Let's assume an average PC. Choose whatever you want. P4, or CoreDuo, say. How long takes an LLR test at the levels 5M, 10M, 20M, 30M, 40M, 50M? How long does it take to find a factor at p= 2P, 4P, 8P, 16P? How many primes do you expect until 50M? From the answers, you can calculate a sieve depth at which sieving does not save any cycles anymore. If you give me the numbers, I will do it. And here comes my claim: For a maximum efficiency, one should sieve to that very sieve depth FIRST, and THEN do LLR. This sieve depth is not going to be 500P, but not 2P neither. Something between 5P and 20P, I'd estimate, but I am looking forward to the numbers, and then I'll be glad to be proven wrong (don't know if you can say that in English). Yours H. 
20071222, 14:48  #40  
Dec 2004
13·23 Posts 
Quote:


20080402, 17:22  #41 
Apr 2003
772_{10} Posts 
Primegrid did reach another milestone today.
With sieving under BOINC we did complete an amount of work that is equal to a range of 1500T. This is the same amount as the complete manual sieving (inclusive SOB) has done or only reserved by now. 
20080404, 00:29  #42 
Dec 2004
13·23 Posts 
The power of sieve is simply awesome on this level.
If you look at the stats over at sob sieve they are still dropping like flies as well. 
20080404, 01:03  #43 
Aug 2007
Princeton, NJ
2×5 Posts 
Is there a plan for manual sieving once it gets to 1500T? It's been slowing down a lot lately but still should run out of ranges in about two months or less.

20080406, 14:50  #44 
Aug 2002
3×5^{2}×7 Posts 

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