mersenneforum.org Getting others to do the work on exponents I like (was: Trial Factoring Progress)
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2021-03-08, 23:21   #23
ATH
Einyen

Dec 2003
Denmark

CB516 Posts

Quote:
 Originally Posted by tuckerkao No doubt why curtisc is still running the PRP test for this already known composite number - https://www.mersenne.org/report_expo...exp_hi=&full=1 I'll try to finish up the P-1 factoring for more of my exponent guesses, so the server will assign them for more billionaire PRP tests, cannot miss the opportunities.
Ben Delo is running around 185 PRP tests per day. Earlier in the late 2019 and early 2020 he was doing up to 660 PRP tests every day, because exponents were smaller and faster then and he used more resources than right now.

Do you think he hand picks between 185 and 660 exponents every single day for 1.5 years?? He did 187,387 total PRP tests so far as of right now.
He just lets mprime/Prime95 run whatever primenet gives it, and he only worries about throughput, costs and if he found a prime yet or not.

If he happens to run or not to run one of "your" exponents, that is just by chance, sorry.

Last fiddled with by ATH on 2021-03-08 at 23:23

 2021-03-09, 16:25 #24 LaurV Romulan Interpreter     "name field" Jun 2011 Thailand 22×5×17×29 Posts Everybody knows that the Earth is spinning around. However, from time to time an idiot is born that believes that it spins around himself.
2021-03-09, 17:47   #25
chalsall
If I May

"Chris Halsall"
Sep 2002

2·3·1,697 Posts

Quote:
 Originally Posted by LaurV However, from time to time an idiot is born that believes that it spins around himself.
While everyone is unique, no one is particularly special. At least, not without a great deal of work...

IMO, the realization of how insignificant one is is a significant leap in any sentient.

2021-03-17, 15:38   #26
bur

Aug 2020
79*6581e-4;3*2539e-3

1110111012 Posts

Quote:
 Originally Posted by axn The P-1 probability at B1=1M, B2=40M with TF done to 2^77 is 4.3848. Same probability with TF done to 2^78 is 3.9980. Hence, the overlap of probability is 0.3868 (i.e. the probability that there is a factor that could be found by either P-1 or TF).
I'm trying to understand the mersenne.ca output.

What do the different percentages tell us?

Why is the "actual" limit lower than the GPU72 limit?

Sorry for using this thread but I thought I could rather do that open a new one.

2021-03-17, 16:27   #27
axn

Jun 2003

122218 Posts

Quote:
 Originally Posted by bur What do the different percentages tell us?
Which ones specifically do you want to know?

Quote:
 Originally Posted by bur Why is the "actual" limit lower than the GPU72 limit
GPU72 is the recommended GPU-based TF limit. Actual is what has actually been done (so far).

2021-03-19, 19:36   #28
bur

Aug 2020
79*6581e-4;3*2539e-3

32·53 Posts

Quote:
 Originally Posted by axn Which ones specifically do you want to know?
All? ;) Seriously though, I wonder about all of them.

Is it the probability to find a factor with the respective TF limit or B1/B2 settings?

And the row "PrimeNet" is the recommended TF limit or B1/B2 for CPU tasks?

"Combined probability", I assume it's the probability when doing both TF and P-1? But "Prob over default TF" I don't really get. It's the same as P-1 probability, which makes sense, but not for the "Actual" row as it's apparently compared to PrimeNet TF probability and not to Actual. Why is that?

2021-03-26, 22:49   #29
tuckerkao

"Tucker Kao"
Jan 2020

25×3×7 Posts

Quote:
 Originally Posted by ATH Ben Delo is running around 185 PRP tests per day. If he happens to run or not to run one of "your" exponents, that is just by chance, sorry.
I try to start my P-1 factoring right before the midnight, knowing it'll likely be finished during the early morning hours of U.S. Eastern Time. Since most of other users maybe asleep, the chance which 1 of Ben Delo's computers will pick it up for the PRP test significantly increases because he's in the Great Britain time zone.

I've sometimes paused my P-1 factoring around 70% to 80% of Stage 2 and begin another exponents, repeat the process for several of them to align their submission time to the desired hours.

I understand it's the prime95 server assigning, however when Ben Delo picks up more of my guesses, I'm highly motivated to do more including other trial factoring and PRP tasks. As long as Kriesel doesn't say I've poached his assignments, it's all great.

I got 2 more from him, so all good for today -
https://www.mersenne.org/report_expo...exp_hi=&full=1
https://www.mersenne.org/report_expo...exp_hi=&full=1

Last fiddled with by tuckerkao on 2021-03-26 at 23:01

2021-03-26, 23:03   #30
Viliam Furik

"Viliam Furík"
Jul 2018
Martin, Slovakia

10111010012 Posts

Quote:
 Originally Posted by tuckerkao I try to start my P-1 factoring right before the midnight, knowing it'll likely be finished during the early morning hours of U.S. Eastern Time. Since most of other users maybe asleep, the chance which 1 of Ben Delo's computers will pick it up for the PRP test significantly increases because he's in the Great Britain time zone.
As far as his profile on the forum says, he lives in Hong Kong, so you are probably wrong about the timezone in one way. You are also (this one is for sure) wrong about the timezone in another way. It doesn't matter where he physically situates himself. He uses AWS with which he doesn't have to interact at all unless he really wants. You would need to know, which server center his machines are set up in. He gets assigned exponents throughout the entire day. Do you know what the word 'automatized' means?

Quote:
 Originally Posted by tuckerkao I understand it's the prime95 server assigning...
No, you obviously don't.

 2021-03-26, 23:05 #31 tuckerkao   "Tucker Kao" Jan 2020 Head Base M168202123 25·3·7 Posts If most of other users have their computers turned off during the early morning of U.S. Eastern Time and Ben Delo's machines are on, that determines my higher chance. While Ben is automatized, a lot of other users including me are not. Last fiddled with by tuckerkao on 2021-03-26 at 23:11
2021-03-26, 23:14   #32
Uncwilly
6809 > 6502

"""""""""""""""""""
Aug 2003
101×103 Posts

33·379 Posts

Quote:
 Originally Posted by tuckerkao If most of other users have their computers turned off during the early morning of U.S.
Most users leave their machines on 24/7. I get assignments all times of day and night.

You are

2021-03-26, 23:35   #33
slandrum

Jan 2021
California

3×101 Posts

Quote:
 Originally Posted by tuckerkao I understand it's the prime95 server assigning, however when Ben Delo picks up more of my guesses, I'm highly motivated to do more including other trial factoring and PRP tasks.
I really don't understand why. Do you have a crush on him or something?

It really doesn't matter what machine does the work, as long as it's done correctly.

It's not even Ben's software running, you realize, he just has access to a tremendous amount of computing power that he's donating to the cause. You don't even want to guess how much that computer time is probably costing him.

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