mersenneforum.org  

Go Back   mersenneforum.org > Great Internet Mersenne Prime Search > Hardware > GPU Computing

Reply
 
Thread Tools
Old 2013-06-16, 19:17   #1
TheMawn
 
TheMawn's Avatar
 
May 2013
East. Always East.

110101111112 Posts
Default TF Factor Found CPU Credit

I've been getting about 30GHz-Days per exponent on mfaktc, doing 60M from 73 to 74. I found a couple of factors recently, and the CPU credit I got was roughly 60GHz-Days.

Why do I get more credit when I find a factor than when I don't? Surely the calculations take less time if they are stopped early?
TheMawn is offline   Reply With Quote
Old 2013-06-16, 21:12   #2
firejuggler
 
firejuggler's Avatar
 
"Vincent"
Apr 2010
Over the rainbow

5·571 Posts
Default

another bit TF'ed doesn't really give any info, it still can be prime or composite.
A factor, on the other side eliminate an exponent for sure.
firejuggler is offline   Reply With Quote
Old 2013-06-17, 02:34   #3
TheMawn
 
TheMawn's Avatar
 
May 2013
East. Always East.

11×157 Posts
Default

But 60GHz-Days isn't enough credit to cover the LL-test I saved. And the double check.
TheMawn is offline   Reply With Quote
Old 2013-06-17, 06:21   #4
NBtarheel_33
 
NBtarheel_33's Avatar
 
"Nathan"
Jul 2008
Maryland, USA

5·223 Posts
Default

It has nothing to do with GHz-days saved; rather, this is a known bug when manually submitting TF factor-found results. It is relatively simple to fix (say a factor is 73.63 bits, then just credit .63 of the full credit from 73 to 74) but simply has not been a priority item for the PrimeNet administrators.

You'll notice that (manually submitted) TF factors are credited as though they were found by P-1, and some (manually submitted) P-1 factors are credited as though they were found by ECM. The manual submission process will also sometimes accept a P-1 that was done to bounds B2 > B1, but record (and credit) it as though it was only done to B1.

All of this is very easy to fix, but it's the kind of thing that ends up on the back burner in favor of other more interesting/important tasks, e.g. code optimization.
NBtarheel_33 is offline   Reply With Quote
Reply

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Factor found that should have been found by P-1 tha Data 65 2020-08-05 21:11
F12 factor found? johnadam74 FermatSearch 16 2016-11-03 12:10
mfaktc TF credit 2x higher if factor found? S34960zz PrimeNet 10 2011-10-13 07:00
TF factor credit Mini-Geek PrimeNet 2 2009-08-28 18:37
Who gets credit for first 10M prime if 2 are found,same time eepiccolo Lounge 20 2003-08-03 02:23

All times are UTC. The time now is 09:12.


Thu Sep 29 09:12:32 UTC 2022 up 42 days, 6:41, 0 users, load averages: 0.95, 1.09, 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