mersenneforum.org  

Go Back   mersenneforum.org > Factoring Projects > YAFU

Reply
 
Thread Tools
Old 2022-03-23, 20:46   #12
EdH
 
EdH's Avatar
 
"Ed Hall"
Dec 2009
Adirondack Mtns

2×13×181 Posts
Default

Thank you! This helps a bunch. I had started out using the values from the tune.c info, but I strayed into doubling values and such as I moved up to larger composites, instead of going back to the listed values. I will probably want to address 105+ and, therefore 3LP eventually, but for now I need to let this settle. I still need to add even more machines to the mix and see what happens.

The rels/sec is definitely going to be important. The two 4 thread machines are widely different and the processing shows it when they are both given the same -siqsR. Would it be far off to consider the ratio between CPUs at one size to be similar to another size composite?
EdH is offline   Reply With Quote
Old 2022-03-23, 20:59   #13
bsquared
 
bsquared's Avatar
 
"Ben"
Feb 2007

5×727 Posts
Default

Quote:
Originally Posted by EdH View Post
Would it be far off to consider the ratio between CPUs at one size to be similar to another size composite?
Seems reasonable.
bsquared is offline   Reply With Quote
Old 2022-03-23, 22:35   #14
EdH
 
EdH's Avatar
 
"Ed Hall"
Dec 2009
Adirondack Mtns

10010011000102 Posts
Default

I was able to calculate a pretty good balance for the original 4 machines and brought the execution time from the above 11:58 down to 8:18. I then was able to do the calculations to add five more machines and brought the time down to 6:52.

But, I'm definitely going to have to find a better way to do these balance calculations if I decide to make this a bigger set of machines and work with different sized composites.

Thanks for all the help!
EdH is offline   Reply With Quote
Old 2022-03-24, 00:46   #15
EdH
 
EdH's Avatar
 
"Ed Hall"
Dec 2009
Adirondack Mtns

10010011000102 Posts
Default

Just to add a comparison, I ran the 90 and 100 digit composites with CADO-NFS on the exact same machines and the composites were factored in 2:25 and 6:20, respectively.
EdH is offline   Reply With Quote
Old 2022-03-25, 12:01   #16
EdH
 
EdH's Avatar
 
"Ed Hall"
Dec 2009
Adirondack Mtns

2×13×181 Posts
Default

Quote:
Originally Posted by bsquared View Post
. . .
If you are thinking of doing this on C105+ numbers for some reason then 3LP is faster, but only with parameters that are not auto-selected. Also I haven't tested 3LP on many machines; it might get tricky with the batch factoring that is used in 3LP. We can talk over strategies if this is something you're interested in.
I suppose my next step "might" be to try this, but these questions come to mind:

How hard would it be for me to learn what it takes to do this?
Would it always take manual intervention?
Would there be a gain over CADO-NFS/Msieve?

A totally different question:

My understanding is that sieving for S/GNFS is too memory intensive for efficient GPU use? Would SIQS be any more capable of being performed by GPU?
EdH is offline   Reply With Quote
Old 2022-03-25, 17:08   #17
bsquared
 
bsquared's Avatar
 
"Ben"
Feb 2007

E3316 Posts
Default

Quote:
Originally Posted by EdH View Post
I suppose my next step "might" be to try this, but these questions come to mind:

How hard would it be for me to learn what it takes to do this?
Would it always take manual intervention?
Would there be a gain over CADO-NFS/Msieve?

A totally different question:

My understanding is that sieving for S/GNFS is too memory intensive for efficient GPU use? Would SIQS be any more capable of being performed by GPU?
It would probably be non-trivial, and I don't have any plans to fully automate it anytime soon. It could be close but it's unlikely to be faster than NFS at C105.

SIQS is also pretty memory intensive at sizes that are interesting. Maybe it would be easier than NFS but that's not saying much.
bsquared is offline   Reply With Quote
Reply

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
SIQS on GPU cgy606 Factoring 1 2016-10-21 13:37
Monitoring multiple client machines? dans Software 5 2010-01-03 04:30
Running on multiple machines Helfire Software 8 2004-01-14 00:09
Testing same number on multiple machines dotnet_dev Software 17 2003-06-16 14:30
Multiple systems/multiple CPUs. Best configuration? BillW Software 1 2003-01-21 20:11

All times are UTC. The time now is 00:28.


Sat Aug 13 00:28:40 UTC 2022 up 36 days, 19:15, 2 users, load averages: 1.13, 1.08, 1.11

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2022, 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.

≠ ± ∓ ÷ × · − √ ‰ ⊗ ⊕ ⊖ ⊘ ⊙ ≤ ≥ ≦ ≧ ≨ ≩ ≺ ≻ ≼ ≽ ⊏ ⊐ ⊑ ⊒ ² ³ °
∠ ∟ ° ≅ ~ ‖ ⟂ ⫛
≡ ≜ ≈ ∝ ∞ ≪ ≫ ⌊⌋ ⌈⌉ ∘ ∏ ∐ ∑ ∧ ∨ ∩ ∪ ⨀ ⊕ ⊗ 𝖕 𝖖 𝖗 ⊲ ⊳
∅ ∖ ∁ ↦ ↣ ∩ ∪ ⊆ ⊂ ⊄ ⊊ ⊇ ⊃ ⊅ ⊋ ⊖ ∈ ∉ ∋ ∌ ℕ ℤ ℚ ℝ ℂ ℵ ℶ ℷ ℸ 𝓟
¬ ∨ ∧ ⊕ → ← ⇒ ⇐ ⇔ ∀ ∃ ∄ ∴ ∵ ⊤ ⊥ ⊢ ⊨ ⫤ ⊣ … ⋯ ⋮ ⋰ ⋱
∫ ∬ ∭ ∮ ∯ ∰ ∇ ∆ δ ∂ ℱ ℒ ℓ
𝛢𝛼 𝛣𝛽 𝛤𝛾 𝛥𝛿 𝛦𝜀𝜖 𝛧𝜁 𝛨𝜂 𝛩𝜃𝜗 𝛪𝜄 𝛫𝜅 𝛬𝜆 𝛭𝜇 𝛮𝜈 𝛯𝜉 𝛰𝜊 𝛱𝜋 𝛲𝜌 𝛴𝜎𝜍 𝛵𝜏 𝛶𝜐 𝛷𝜙𝜑 𝛸𝜒 𝛹𝜓 𝛺𝜔