mersenneforum.org  

Go Back   mersenneforum.org > Great Internet Mersenne Prime Search > Data

Reply
 
Thread Tools
Old 2021-08-18, 20:55   #694
petrw1
1976 Toyota Corona years forever!
 
petrw1's Avatar
 
"Wayne"
Nov 2006
Saskatchewan, Canada

2×32×5×53 Posts
Default

Quote:
Originally Posted by SethTro View Post
Probably not but maybe
4. Ghz-days to clear each bit level (similar to mersenne.ca/tf1G)
5. Estimated Ghz-day to finish project (assume finds a factor with 1 in 100 tf, 70 factors => 7000 TF needed => 1200 at 70, 1800 at 71, 1800 at 72, 1800 at 73, 600 at 74 => X Ghz-days)
The issue with these is that he would have no way of knowing how much "clearing" will be done via TF vs P1 or ECM.
To clear the lower levels with TF alone would be next to impossible and almost silly. P1/ECM is the best tool here.
Similarly it would have been silly to clear the higher levels with P1/ECM alone; TF was much more effective there.
petrw1 is online now   Reply With Quote
Old 2021-08-18, 22:00   #695
chalsall
If I May
 
chalsall's Avatar
 
"Chris Halsall"
Sep 2002
Barbados

23·3·5·83 Posts
Default

Quote:
Originally Posted by petrw1 View Post
The issue with these is that he would have no way of knowing how much "clearing" will be done via TF vs P1 or ECM.
Exactly. This is a bit like the "wild west".

Everyone has a bunch of guns, but isn't sure exactly where to aim them optimally (let alone fire).

Quote:
Originally Posted by petrw1 View Post
To clear the lower levels with TF alone would be next to impossible and almost silly. P1/ECM is the best tool here. Similarly it would have been silly to clear the higher levels with P1/ECM alone; TF was much more effective there.
To put on the table... I'm a bit busy.

Please just tell me what should happen with the firepower?
chalsall is online now   Reply With Quote
Old 2021-08-19, 04:14   #696
petrw1
1976 Toyota Corona years forever!
 
petrw1's Avatar
 
"Wayne"
Nov 2006
Saskatchewan, Canada

2·32·5·53 Posts
Default

Quote:
Originally Posted by chalsall View Post
Exactly. This is a bit like the "wild west".

Everyone has a bunch of guns, but isn't sure exactly where to aim them optimally (let alone fire).

To put on the table... I'm a bit busy.

Please just tell me what should happen with the firepower?
You specifically are doing just awesome; GPU72 facilitates anyone who has hardware to allocate to this project.

Unless specifically asked how they may best help everyone is totally on their own; I am in no position to dictate.

All I do occasionally is suggest where I feel help is most needed for those interested.

I assume people will use their hardware appropriately:
- CPUs for P-1 or ECM
- GPUs that are really fast at TF will most likely do TF; at P-1 may choose accordingly.

And as I've suggested before TF helps more with the higher ranges; P1/ECM helps more with the lower ranges.

I adjust my own farm (maybe small piece of sod) as necessary.

Thanks all
petrw1 is online now   Reply With Quote
Old 2021-08-19, 18:06   #697
chalsall
If I May
 
chalsall's Avatar
 
"Chris Halsall"
Sep 2002
Barbados

996010 Posts
Default

Quote:
Originally Posted by petrw1 View Post
You specifically are doing just awesome; GPU72 facilitates anyone who has hardware to allocate to this project.
Thanks for the kind words. But I'm just leveraging on code written years ago.

Other's are doing the actual work!
chalsall is online now   Reply With Quote
Old 2021-08-19, 18:08   #698
chalsall
If I May
 
chalsall's Avatar
 
"Chris Halsall"
Sep 2002
Barbados

100110111010002 Posts
Default

Quote:
Originally Posted by firejuggler View Post
23.8M to 23.9M is now tf'ed to 71 bit. A few post ago, someone wanted to take the range to 73 bit. Feel free. I"ll continue with the PM1.
OK... I've had the Colab DCTF'ers taking poorly TF'ed candidates up to 73. The system then releases the candidate so you can P-1 them.
chalsall is online now   Reply With Quote
Old 2021-08-19, 19:31   #699
tha
 
tha's Avatar
 
Dec 2002

827 Posts
Default

Quote:
Originally Posted by chalsall View Post
... I've prioritized fifty (50#) candidates currently at 69 "bits" in 9.2M (where I'm inferring you are currently working) to be taken up to 73 by the DCTF Colab workers.
I am about to move to the 9.3M range. This range is already TF'd very well and below 2000 exponents left unfactored. But I am going to do this range P-1'd to the same standard. This will give others time to do TF in the other ranges of 9M.
tha is offline   Reply With Quote
Old 2021-08-20, 23:14   #700
tuckerkao
 
"Tucker Kao"
Jan 2020
Head Base M168202123

7608 Posts
Default

Quote:
Originally Posted by tha View Post
I am about to move to the 9.3M range. This range is already TF'd very well and below 2000 exponents left unfactored. But I am going to do this range P-1'd to the same standard. This will give others time to do TF in the other ranges of 9M.
The 8.2M range has also been trial factored very well.

I ran P-1 once and P+1 six times for M8202179, got CPU credits every time. The best part was that SRBase put the roof on only several hours later(1 extra bit with no factor).

Last fiddled with by tuckerkao on 2021-08-20 at 23:17
tuckerkao is online now   Reply With Quote
Old 2021-08-21, 08:32   #701
tuckerkao
 
"Tucker Kao"
Jan 2020
Head Base M168202123

1F016 Posts
Default

Finally a new factor on M8202059 after nearly a full day of empty net.
tuckerkao is online now   Reply With Quote
Old 2021-08-22, 17:47   #702
LaurV
Romulan Interpreter
 
LaurV's Avatar
 
"name field"
Jun 2011
Thailand

9,787 Posts
Default

Is anybody working in 4.4M right now? I mean, doing P-1.

I see that somebody took about 600 of them to B1=10M, and I don't know if this nice activity is still going on. Last week there was some TF going on (11 factors found) but there is no movement in the last 3-4 days.
Then, there are ~1400 candidates that could benefit of some larger bounds, and I was thinking to give it a spin after I finish 11.6M (where there are only 6 factors to be founds currently, with the help of SRBase who found 24 and Andrew B, who found 2 by TF to 71). That is because I see there is still a lot of TF going on in 11M, and I would like to let the guys exhaust their steam and coal before I go finishing the 11.xM ranges, otherwise, as it seems they can't stop once they started (I am thinking of SRBase's workers who got the assignments and are working on them, those can't be "recalled"), we may end up later with a lot of overshot, like it is currently happening in 11.1M and 11.9M (see the twok table). So I am temporarily looking for a new range to bite into, and starting from the beginning looks more orthodox...

Last fiddled with by LaurV on 2021-08-22 at 17:55
LaurV is offline   Reply With Quote
Old 2021-08-22, 18:44   #703
petrw1
1976 Toyota Corona years forever!
 
petrw1's Avatar
 
"Wayne"
Nov 2006
Saskatchewan, Canada

2·32·5·53 Posts
Default

Quote:
Originally Posted by LaurV View Post
Is anybody working in 4.4M right now? I mean, doing P-1.

:
axn has been systematically clearing the 3M and now 4M ranges.
I can't comment whether he minds a little help.

And if you are going there Chris might as well release the TF assignments he has curated there.
petrw1 is online now   Reply With Quote
Old 2021-08-22, 18:50   #704
petrw1
1976 Toyota Corona years forever!
 
petrw1's Avatar
 
"Wayne"
Nov 2006
Saskatchewan, Canada

2·32·5·53 Posts
Default

Quote:
Originally Posted by LaurV View Post
So I am temporarily looking for a new range to bite into, and starting from the beginning looks more orthodox...
An option is to look in the 2xM ranges.
The plan is to TF to 73 and then P1 them aggressively then hopefully don't have many left for more TF.
There are a few ranges already at 73 bits.
petrw1 is online now   Reply With Quote
Reply

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Thinking of Joining GPU to 72 jschwar313 GPU to 72 3 2016-01-31 00:50
Thinking about lasieve5 Batalov Factoring 6 2011-12-27 22:40
Thinking about buying a panda jasong jasong 1 2008-11-11 09:43
Loud thinking on irregular primes devarajkandadai Math 4 2007-07-25 03:01
Question on unfactored numbers... WraithX GMP-ECM 1 2006-03-19 22:16

All times are UTC. The time now is 01:04.


Sun Oct 24 01:04:39 UTC 2021 up 92 days, 19:33, 0 users, load averages: 1.21, 1.11, 1.11

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.

This forum has received and complied with 0 (zero) government requests for information.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.
A copy of the license is included in the FAQ.