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Old 2007-09-17, 12:54   #1
hhh
 
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Jun 2005

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Default Prime Cullen Prime, Rest in Peace

Dear friends,

I suggest stopping the effort. Primegrid is going to compute LLR tests we would have to do next in a week or so, and I will be away from the early October, so I would leave this project open for the farewell discussion until then, and ask Xyzzy to move it to the archieved projects later.

Whilst we did not find a prime, there were some achievements that should be pointed out:

- Without this project, the major improvements of the sieving software would probably never have done, or much later, and they help right now PrimeGrid in their quest. Credit goes to Citrix and geoff, and Mark Rodenkirch, for their commitment to efficient programming.

- I don't know at what extent Primegrid would search for Cullen and Woodall, but I can imagine that part of the inspiration came from this project. Thanks here to all the guys who came up with the idea; you can see the beginning in this thread.

- We did some decent sieving, and from this point of view, no CPU-time was wasted. The credit goes to everybody of you, who did not attack the LLR tests first. This is the only project I am aware of where it has been like this.

- We did have some fun, didn't we? I won't speak about credits for this, but I honestly thank you for your support, nice and gentle participation, and the experience I could gain by administrating this little project.


As Primegrid is searching for the same thing, and more, but faster, the search isn't over. So it makes me happy to know that PrimeCullenPrime hasn't been a failure, but the predecessor of something better. Evolution, right?


So, thank you all very much again, and please have fun searching primes and factors in one or more of all the other amazing projects that are out there.

Yours H.
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Old 2007-09-17, 15:37   #2
Rytis
 
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I feel a bit uneasy about having taken over your project, but I guess with PG we'll find the PCP sooner... and we'll surely mention this project when we find one, so you'll still make it into history.

Farewell, and if the participants of the project are looking for something to crunch - why not join Cullen search at PrimeGrid? :)
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Old 2007-09-17, 16:06   #3
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Not at all.

I am glad you are doing such a good job. You have a project like it should be. I've seen you have started even a Boinc-sieving effort.

You have not taken over the project, you have taken it to a hole diffenrent level. That the people (= me) are changing doesn't matter.
H.
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Old 2007-09-21, 15:13   #4
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Why stopping?? Can't you reserve a large block to 3.5 or 4M and work on it. They should acknowledge your reservation ahead in time of theirs regardless of the number of machines you have. That's how it used to be in the prime searching community until recently...
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Old 2007-09-21, 16:34   #5
hhh
 
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Quote:
Originally Posted by Kosmaj View Post
Why stopping?? Can't you reserve a large block to 3.5 or 4M and work on it. They should acknowledge your reservation ahead in time of theirs regardless of the number of machines you have. That's how it used to be in the prime searching community until recently...
First, there are technical reasons. If they have to sort out the prime n before, that's work. Then, we are too slow, and they have to put them in again, and explain to newbies why there are so small tests. And so on.

And then, I don't see the point. The work we did is being done. I save time, others save time, and we can spend it somewhere more valuable. For me, really, to stop is the most natural thing of the world. I am not sad at all.
H.
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