20210325, 05:37  #1 
Dec 2020
C_{16} Posts 
Little bug doublecheck assignments?
Ahoy.
I observed a little strange behaviour in the assignment for doublechecks. The rule says for Cat. 0 "Setting for "days of work to queue" <= 3.". If I set my queue to 2 days I will get no Cat. 0 work, only Cat. 1. If I set the queue to 3 days I will get Cat. 0. Imo a bit strange. Is this the way it is intended to work? 
20210325, 06:14  #2 
Jun 2003
4962_{10} Posts 
No. <= 3 means both 2 & 3 qualify. However, the boundaries between categories are fluid. So you might think something is cat 1, but might be actually have become cat 0 at time of assignment, as the wavefronts progress.
EDIT: If you still think it is behaving inconsistently, post the exponent(s) and assignment date(s), so that admins can look into it Last fiddled with by axn on 20210325 at 06:15 
20210325, 09:37  #3 
Dec 2020
2^{2}·3 Posts 
So my last 3 exponents:
55602571, assigned 20210322, Cat. 1, Workload Cache 2 days 55606571, assigned 20210324, Cat. 1, Workload Cache 2 days 55183567, assigned 20210325, Cat. 0, Workload Cache 3 days Around mid January I got my first Cat. 0 exponent. Sorry can´t remeber wich one it was and can´t comprehend it by the results page. But shortly after I shortend my queu from 3 to 2 days and only got Cat. 1 exponents until I changed back the queu to 3 days and now getting Cat. 0 work again. Oh, and the Accountname is "Stocki". Last fiddled with by BigDukeSix on 20210325 at 09:42 
20210325, 10:13  #4 
"Viliam Furík"
Jul 2018
Martin, Slovakia
2^{3}·3·19 Posts 
This might be just a coincidence because there are only 200 Cat 0 exponents at all times, so it's possible that all were assigned, and one of them suddenly expired or was unassigned, so it became free and got assigned to you. I suggest trying again for a few days, changing it back and forth, between 2 and 3, and checking the assignment category of exponents you get.
If your suspected error is reproducible, it's more likely to be an error, instead of a coincidence. Last fiddled with by Viliam Furik on 20210325 at 10:14 Reason: few clarifications 
20210325, 10:34  #5  
Dec 2020
C_{16} Posts 
Quote:
Over 2 months? This would be really bad luck. Anyway, I will watch it over the next few exponents and do a change here and there and see if I can reproduce the problem. Last fiddled with by BigDukeSix on 20210325 at 11:18 

20210325, 11:46  #6  
Jun 2003
1362_{16} Posts 
Quote:
If the current setting is 3, and you're getting Cat 0, try changing it to 2 after two weeks, then observe for another two weeks. If it is consistently giving Cat 0 / Cat 1 for 3 / 2 resp., then there is some assignment code weirdness. 

20210325, 11:47  #7 
Sep 2006
Brussels, Belgium
3206_{8} Posts 
There are a lot of contenders doing CAT1 and grabbing the occasional CAT0 exponent. In a year I got 5 CAT0 exponents out of 600. In other words, based on a very little sample, depending on the number of exponents you tested, 2 could even be above average, not bad but good luck.
Jacob 
20210325, 11:57  #8 
"TF79LL86GIMPS96gpu17"
Mar 2017
US midwest
3×5×11×31 Posts 
https://www.mersenne.org/primenet/ says in the past 30 days, 3500 participants, 20,000 computers. If the 200 Cat 0 turn over every 5 days, that's 1200 in 30 days, not enough to go around. Even if they complete on average every 48 hours, that's 3000 in 30 days.
A new system needs to turn in 4 correct double checks per worker before advancing to lower category numbers. A system needs to be fast enough to complete a cat 0 in 10 days or less, to get assigned them. Last fiddled with by kriesel on 20210325 at 12:01 
20210325, 18:38  #9 
Jan 2021
California
2^{2}·17 Posts 
The availability of cat 0 DC assignments has nothing to do with the clearing rate of cat 0 DC assignments. The only way you can get a cat 0 assignment is if an assignment that's currently in the cat 0 range expires, or if an assignment you got in some other category moves into cat 0 as it ages. This is just due to the nature of how the assignments move into cat 0.
There are cat 1 assignments available all the time, so you can always get a cat 1 assignment if you meet the requirements. Last fiddled with by slandrum on 20210325 at 18:43 
20210326, 02:16  #10 
Jan 2021
California
2^{2}×17 Posts 
Today, 1 cat 0 assignment expired and was reassigned. Tomorrow, 5 cat 0 assignments will expire.
Once in a while there's a block of assignments that expire on the same day, but there are also days where no cat 0 assignments expire. 
20210502, 18:41  #11 
Dec 2020
14_{8} Posts 
So, bughunting takes a bit longer. By end of March I set my queue to 3 days. Since then I got 30 exponents, 3 of them were Cat. 0.
Now I set my queue to 2 days and will see, what happens. ;) 
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