Trial Factor assignments squatting in Cat 0 and Cat 1 DC range

[Uncwilly]

Originally Posted by Prime95

See posts #33 and #34 in this thread

16 days should have been enough time for a slow GPU to work through them. 1 Tesla K80 would be able to finish the 10 in the DC range in 1 day, with time enough to do 1 more.

[Uncwilly]

In the Cat 0 and Cat 1 FTC range there are almost 200 P-1 assignments just sitting there with no expiry dates. Many are over 3 months old. This looks to be the latest exploit to tie up exponents near milestones, or to reserve them for oneself contrary to the standard FTC assignment and expiry rules.

https://www.mersenne.org/assignments...ecm=1&exdchk=1

[Uncwilly]

A batch assigned 11/23
https://www.mersenne.org/assignments...hk=1&exfirst=1

[piforbreakfast]

Originally Posted by Uncwilly

In the Cat 0 and Cat 1 FTC range there are almost 200 P-1 assignments just sitting there with no expiry dates. Many are over 3 months old. This looks to be the latest exploit to tie up exponents near milestones, or to reserve them for oneself contrary to the standard FTC assignment and expiry rules.

https://www.mersenne.org/assignments...ecm=1&exdchk=1

I'm about to get a second gaming computer and can help knock out a bunch of these P-1 assignments pretty quickly once my new machine is up and running. I hope to have the second computer in the next couple weeks.

[kriesel]

I see several are a relative few of my manual assignments that have fallen through the cracks. I'll work on cleaning those up this week. (A radeon vii can do 30 a day, but only if they successfully complete, and some have crashed in a way that generates messages such as "gcd invalid input" on a resumption attempt.)

[ATH]

Originally Posted by Uncwilly

In the Cat 0 and Cat 1 FTC range there are almost 200 P-1 assignments just sitting there with no expiry dates. Many are over 3 months old. This looks to be the latest exploit to tie up exponents near milestones, or to reserve them for oneself contrary to the standard FTC assignment and expiry rules.

These P-1 assignments in Cat0+1 from October and November are suspect I think, so many of them are not even started:
https://www.mersenne.org/assignments...hk=1&exfirst=1

Ernst had a batch he did not remember getting, and Ryan Propper has several hundreds none of them started, and several other users have a batch without having started any of them: Runtime Error, BigBrother, Albrecht Heeffer, OneAfterlife etc.

All of them were Cat1 when started even those few from September. Should we be doing P-1 on Cat1 assignments or should it be done before they reach Cat1 ?

[Ensigm]

Originally Posted by ATH

Should we be doing P-1 on Cat1 assignments or should it be done before they reach Cat1 ?

If an exponent doesn't already have a P-1 done on it by the time it is assigned as FTC, then the person receiving the FTC assignment will normally do a P-1 on it anyway.

The problem is that some of them don't have a large memory, so they can only do a P-1 with S1 only. From the perspective of the project, that is suboptimal.

It would be nice if there is an option for low-memory FTC contributors to only accept assignments that has a sufficient P-1 done. And to give the smallest P-1 assignments (for example Cat 0+1) to machines that are proved capable of returning 2-Stage P-1 results in a reasonably short time, similar to (but simpler than) the rules of FTC/DC.

cc George

[Ensigm]

Down sides:

• Additional assignment rules with little effect on overall primality progress

Up sides:

• More factors found

• Less P-1 will need to be redone in the future

[Syntony]

144 Cat 0 DCs available right now...

[piforbreakfast]

Originally Posted by piforbreakfast

I'm about to get a second gaming computer and can help knock out a bunch of these P-1 assignments pretty quickly once my new machine is up and running. I hope to have the second computer in the next couple weeks.

Originally Posted by Syntony

144 Cat 0 DCs available right now...

My second computer will arrive on 12-23. I hope to get it online on the same day to start knocking out these DCs, among others.

[piforbreakfast]

Originally Posted by piforbreakfast

My second computer will arrive on 12-23. I hope to get it online on the same day to start knocking out these DCs, among others.

Actually, it just arrived today. I will have it online this afternoon and ready to roll. I will tackle these DCs with gusto.