20220719, 14:43  #1 
"Juan Tutors"
Mar 2004
571 Posts 
Exponent unreserved
I had an exponent unreserved that I had on the backburner because I downsized the number of computers that were working. The things is that actually was still doing work on it, specifically doing TF while one of my current exponents finishes it's work. I also did a ton of P1 work on it and mersenne.org (prior to v30.8) didn't show a countdown to it being unreserved at any point. Shouldn't that be prevented with no warning when activity is being submitted such as TF?
//EDIT: Here is the exponent: https://www.mersenne.org/report_expo...ll=1&ecmhist=1 Last fiddled with by JuanTutors on 20220719 at 15:07 
20220719, 15:08  #2 
Random Account
Aug 2009
Not U. + S.A.
4425_{8} Posts 

20220719, 15:16  #3 
"Juan Tutors"
Mar 2004
571 Posts 

20220719, 18:32  #4 
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Aug 2009
Not U. + S.A.
100100010101_{2} Posts 

20220719, 18:37  #5 
"Juan Tutors"
Mar 2004
571 Posts 
I am not asking where it goes. I am actually asking whether the exponent should have been unreserved or expired to begin with considering that I have been submitting factoring results, and whether a policy change is in order for people who are submitting tf work on an exponent that is reserved to them.

20220719, 18:42  #6  
Jan 2021
California
5·7·13 Posts 
Quote:


20220719, 23:15  #7 
"TF79LL86GIMPS96gpu17"
Mar 2017
US midwest
2^{5}·3·71 Posts 
The last PRP assignment update by JuanTutors was 20210614.
After more than a year of no progress or updates for the PRP assignment, the server judged it abandoned, marked it expired 20220616, more than 15 months after issue, and assigned it to someone else 20220617. I believe that is correct server function. The nearly 3% PRP progress made by JuanTutors was a waste as a result of over a contiguous year of inaction on the PRP assignment. This loss could have been avoided by running the PRP assignment for perhaps half a day per month to report in a bit of progress occasionally. In most cases, a PRP assignment ought not be made on hardware that will not complete it within a year. A good new laptop ought be able to complete a 100Mdigit PRP in ~4 months; a good DP performance GPU in ~2 weeks. TF effort performed by JuanTutors from 81 to 83 bits was to excess bit levels, largely a waste of ~4417 TF GHD. See https://www.mersenne.ca/exponent/332602913 (That's ~2 days of a fast TF GPU, or one of a very fast TF GPU. TF should only be done on GPUs these days, not on CPUs.) P1 performed was to inadequate bounds, also somewhat a waste. (A sufficient set of bounds could have been run in a fraction of a day on a good DP performance GPU such as a Radeon VII, providing a greater probability of finding a factor than the day or more of excess TF did. Or could now be done more efficiently than before with recent improvements in prime95 V30.8.) Even if TF or P1 unassigned work counted as updates on an assigned PRP assignment, which they don't, there was a gap of more than a year between the P1 result and TF result to 82 bits. There are times when it is advisable to perform TF or P1 or both on the assigned exponent before spending a lot of effort on a PRP assignment. (Such as when TF was not completed to recommended levels, or P1 not completed to adequate bounds. Inadequate bounds P1 first is a waste and is to be avoided. That is well known, and confirmed by RDS among others.) But submitting TF or P1 results on an exponent does not count as update or progress on the PRP assignment. Just like turning in history homework does not placate the art teacher. The PRP assignment was lost to severe and sustained neglect at best. And apparently lack of understanding of handling independent results independently on a given exponent. Last fiddled with by kriesel on 20220719 at 23:25 
20220720, 01:31  #8  
"Juan Tutors"
Mar 2004
1000111011_{2} Posts 
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Honestly, not sure what made some of the members of this forum so rude. I regret posting here almost every time. 

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