mersenneforum.org  

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

Reply
 
Thread Tools
Old 2020-03-01, 11:50   #1
lukerichards
 
lukerichards's Avatar
 
"Luke Richards"
Jan 2018
Birmingham, UK

28310 Posts
Default Asking for TF, getting DC

Hi,

I have a computer that is only ever on occasionally, but when it is on it's usually on for a good few hours (say 3-6 hours) at a time.

It has access to 16 cores and I've set P95 to run 16 workers running TF on each.

Worker 1 collects a TF job, but PrimeNet is assigning LL DC work. Is there any way to override this?

Worker 1 had 14 jobs queued up so for now I've gone into worktodo.txt and reallocated 13 of them manually to workers 2-14, but P95 has just appended the LL DC job to do after that TF is done.

I don't want to do LL work on here - a job takes far too long on a computer that is only running for, say, 12-24 hours a month.
lukerichards is offline   Reply With Quote
Old 2020-03-01, 12:28   #2
ATH
Einyen
 
ATH's Avatar
 
Dec 2003
Denmark

34·5·7 Posts
Default

Probably because that computer never did a DC and your account is set to "one matching double-check yearly" for each computer:

https://www.mersenne.org/thresholds/
ATH is offline   Reply With Quote
Old 2020-03-01, 12:30   #3
lukerichards
 
lukerichards's Avatar
 
"Luke Richards"
Jan 2018
Birmingham, UK

283 Posts
Default

Update:

I logged into my mersenne.org account and found that Workers 2-14 were set for "Whatever makes most sense", despite that not being the setting in Prime95.

Having manually changed each core on mersenne.org to be doing TF work, closed P95 and reopened it, we're now up and running as expected.
lukerichards is offline   Reply With Quote
Old 2020-03-01, 16:31   #4
chris2be8
 
chris2be8's Avatar
 
Sep 2009

13·139 Posts
Default

TF on a CPU is not much use since GPUs do TF much faster than CPUs do. Has it got enough RAM to do P-1 tests? That would be more use to the project.

Chris
chris2be8 is offline   Reply With Quote
Old 2020-03-01, 17:07   #5
kriesel
 
kriesel's Avatar
 
"TF79LL86GIMPS96gpu17"
Mar 2017
US midwest

EF616 Posts
Default TF is a waste of a good cpu (except...)

How many TF GhzD/day can the cpu in question provide? A good gpu can do 1000 to 3000, 24/7. (GTX1080, 1650 are ~1000; RTX2080 Super ~3300. The best use of a cpu core for TF is to keep a good gpu well fed, or several. https://www.mersenne.ca/mfaktc.php https://www.mersenne.ca/throughput.p...2288&mhz2=2700)

I'll occasionally run cpu TF, but only for test purposes, or the very rare foray into very high exponents that available gpu software like mfaktx can't handle.
kriesel is offline   Reply With Quote
Reply

Thread Tools


All times are UTC. The time now is 04:14.

Wed Jun 3 04:14:53 UTC 2020 up 70 days, 1:47, 2 users, load averages: 4.82, 4.59, 3.64

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, 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.