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Old 2018-03-12, 18:36   #12
Dubslow
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Quote:
Originally Posted by petrw1 View Post
I don't understand how this could be the case
I believe he meant relative to re-doing the P-1 with stage 2 first. Redoing the P-1 is generally not worth it from a "prime or composite" point of view, even if people prefer to do so to find more factors.
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Old 2018-06-10, 07:24   #13
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Quote:
Originally Posted by petrw1 View Post
I want to choose my own bounds...
You can (more or less) choose your own bonds with the PFactor worktype by playing with the two last parameters :

Pfactor=AID,[FFT2=9999K,]k,b,n,c,how_far_factored,ll_tests_saved_if_factor_found

If you change those parameters they are not checked against the database, but they have a huge influence on the chosen bounds.

Jacob
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Old 2018-08-02, 18:56   #14
ixfd64
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I've noticed that some people are able to reserve P-1 assignments for exponents with stage 1 done, even exponents that have already been verified. For example, the GPU to 72 spider has been able to reserve category 1 exponents despite not having completed any double-checks. However, I have never been able to get PrimeNet to assign these exponents to me. Is there some trick to doing this, like sending specific API requests? Or do I have to be a member of certain user groups?

Last fiddled with by ixfd64 on 2018-08-03 at 01:35
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Old 2018-08-02, 19:22   #15
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Just so you know, those candidates reserved for Trial Factoring in the 5xM ranges are for GPU72 (and are CAT4). Those reserved for P-1'ing in 46M are under my personal account, through which I sometimes do such work as part of Wayne's "To below 2,000" sub-sub-sub project.

In both cases, I simply use mprime instances for the reservations; no trickery nor special API calls. And I'm also somewhat unsure what the criteria is; sometimes Primenet gives an AID, other times not.

Perhaps those behind Primenet can shed some additional light on the subject. It would certainly be good for such reservations to be possible such that they are visible for those of us redoing P-1 work, so that we don't step on each other's toes....

Quote:
Originally Posted by ixfd64 View Post
For example, the GPU to 72 spider has been able to reserve category 1 exponents despite not having completed any double-checks.
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Old 2018-08-02, 23:33   #16
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Quote:
Originally Posted by chalsall View Post
And I'm also somewhat unsure what the criteria is; sometimes Primenet gives an AID, other times not.
Just to follow up on this, and perhaps give the Primenet admins some useful empirical data...

I'm also doing some TF'ing and P-1'ing work in 31.1M. I just reserved another batch of candidates to P-1 there, and some received AIDs and other's didn't. An example is 31163663 and 31163729. The former got an AID while the latter didn't, even though they are immediately beside each other (in the list of candidates where stage two wasn't done).

The only difference I can tell between them is the first received additional TF'ing after the matching DC was submitted, while the second didn't. They're both TF'ed to 71 bits, and have the same B1.

Edit: Oh, also, to eliminate another possibility... 31164799 also didn't receive an AID, and *wasn't* DC'ed by me (31163729 was).

Last fiddled with by chalsall on 2018-08-02 at 23:39
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Old 2018-10-09, 19:15   #17
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Quote:
Originally Posted by petrw1 View Post
Toe avoidance can be achieved if we all note our P1 efforts here:

For me:
- 50-59M range
- For any .1M range that has more than 1999 unfactored
- For exponents that the current P1 has B1=B2 (and not excessively large)
I am running PMinus1 with B1=1000000 B2=20000000 (1M,20M)
I've done all the P-1 I want to do in the 5xM ranges.
I am moving all PCs over to 45-49M (plus 43.8M) over the next couple days.
Same rules as above plus only ranges already factored to 73Bits
Starting with: 48.6M, 48.7M, 46.7M, 48.3M. These will keep me busy for a few months.


P.S. I left LOTS in the 5xM ranges with B1=B2 for those who want them.
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Old 2018-10-10, 08:41   #18
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Quote:
Originally Posted by petrw1 View Post
I've done all the P-1 I want to do in the 5xM ranges.
I am moving all PCs over to 45-49M (plus 43.8M) over the next couple days.
Same rules as above plus only ranges already factored to 73Bits
Starting with: 48.6M, 48.7M, 46.7M, 48.3M. These will keep me busy for a few months.


P.S. I left LOTS in the 5xM ranges with B1=B2 for those who want them.
Having a 32GB system I might be interested in doing a dozen 5xM having B1=B2 if you have a list of them...
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Old 2018-10-10, 13:33   #19
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Quote:
Originally Posted by ET_ View Post
Having a 32GB system I might be interested in doing a dozen 5xM having B1=B2 if you have a list of them...
James' has a query for just this kind of thing....
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Old 2018-10-10, 13:54   #20
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Quote:
Originally Posted by chalsall View Post
James' has a query for just this kind of thing....
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Old 2021-01-16, 05:46   #21
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I noticed there's a "factor P-1 redo" work type that seems to have been added some time ago: https://mersenne.org/worktypes

However, no such option appears on the manual assignments page.
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Old 2021-01-24, 18:13   #22
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Quote:
Originally Posted by ixfd64 View Post
I noticed there's a "factor P-1 redo" work type that seems to have been added some time ago: https://mersenne.org/worktypes

However, no such option appears on the manual assignments page.
I'm not sure what the P-1 redo was originally for, but a regular P-1 (large) assignment does the trick anyway.
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