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Search: Posts Made By: Prime95
Forum: Software 2021-12-02, 03:05
Replies: 63
Views: 704
Posted By Prime95
Build 2 is no different than build 1. I'm pretty...

Build 2 is no different than build 1. I'm pretty sure there is a deadlocking/mutex issue in there that I have not found (I suck at writing good locking code). Your output may provide a clue. ...
Forum: Software 2021-12-02, 03:03
Replies: 63
Views: 704
Posted By Prime95
If you are expecting 2 workers to share stage 2...

If you are expecting 2 workers to share stage 2 memory in 30.8 you could be in trouble. If worker 1 is in stage 2 and worker 2 wants to enter stage 2 by "taking" some of worker 1's memory, then...
Forum: Data 2021-12-02, 00:35
Replies: 966
Views: 124,122
Posted By Prime95
I had wanted to keep 30.8 out of the general...

I had wanted to keep 30.8 out of the general public's eye, but someone created a 30.8 thread.
I've moved all the 30.8 posts there: https://www.mersenneforum.org/showthread.php?t=27366

We now...
Forum: Software 2021-11-30, 19:24
Replies: 63
Views: 704
Posted By Prime95
30.8 is not ready for prime-time! I made...

30.8 is not ready for prime-time!

I made this version available much earlier than normal because it has significant improvements for P-1 stage 2 on "smaller" exponents. This version is only for...
Forum: Marin's Mersenne-aries 2021-11-29, 03:13
Replies: 15
Views: 58,493
Posted By Prime95
The software won't let you go that low. This...

The software won't let you go that low. This only happens when proof uploading stops (and does not resume) for some reason. This is a 3 month old proof where not much of the proof file made it to...
Forum: Software 2021-11-29, 00:36
Replies: 63
Views: 704
Posted By Prime95
That will be a problem for a while. Optimal B2...

That will be a problem for a while. Optimal B2 uses a cost function which I have not worked on much. There's little point working on the cost function while the stage 2 code is still being...
Forum: Software 2021-11-28, 22:56
Replies: 148
Sticky: Prime95 30.7
Views: 12,806
Posted By Prime95
30.7 is now the official release. I'm not sure...

30.7 is now the official release. I'm not sure it is important enough to merit front page coverage.
Forum: Software 2021-11-28, 21:36
Replies: 63
Views: 704
Posted By Prime95
You are correct

You are correct
Forum: Software 2021-11-28, 20:32
Replies: 63
Views: 704
Posted By Prime95
Let's try again. It turns out I did not fully...

Let's try again. It turns out I did not fully understand (and still don't) the roundoff behavior of the new polymult code. Couple that with several issues recovering from excessive roundoff error...
Forum: Software 2021-11-26, 06:16
Replies: 63
Views: 704
Posted By Prime95
Thanks everyone! You've given me several bugs to...

Thanks everyone! You've given me several bugs to hunt down. Please stop using 30.8 for now.

Edit: 30.8 removed from the server.
Forum: Software 2021-11-25, 23:33
Replies: 63
Views: 704
Posted By Prime95
This looks fine. Yes, time estimates will be...

This looks fine. Yes, time estimates will be wildly off the mark. Tidying up the incorrect 0.0% stage 2 messages and these time estimates have not been worked on -- part of why I call this an...
Forum: Lone Mersenne Hunters 2021-11-25, 23:14
Replies: 18
Views: 13,445
Posted By Prime95
Stop! Investigate v30.8. Wait for a future...

Stop! Investigate v30.8. Wait for a future version before trying P+1.
Forum: Software 2021-11-25, 22:31
Replies: 63
Views: 704
Posted By Prime95
I found a bug in P-1 stage 2 init that may or may...

I found a bug in P-1 stage 2 init that may or may not have affected my previous runs. I'm rerunning all my v30.8 stage 2 work. When using 30.8, I recommend saving your completed P-1 save files...
Forum: Software 2021-11-25, 15:37
Replies: 63
Views: 704
Posted By Prime95
The new stage 2 selects a D value (330330 in this...

The new stage 2 selects a D value (330330 in this case) and then does batches of D values with a single polynomial multiplication. The new code completes the full batch that is larger than the...
Forum: Software 2021-11-25, 06:31
Replies: 63
Views: 704
Posted By Prime95
Yes. That was just my complete-shot-in-the-dark...

Yes. That was just my complete-shot-in-the-dark guess as to ECM's equivalent TF.

I upped B1 to 250M, fixed the 999x cap. B2 = 4.45 trillion in an hour and a half.


[Work thread Nov 24 23:42]...
Forum: Software 2021-11-25, 04:16
Replies: 63
Views: 704
Posted By Prime95
Exclamation Prime95 30.8 (pre-beta) (FOR P-1 USERS ONLY; SMALL EXPONENTS ONLY)

For giggles, I tried P-1 on M80071, B1=200M It appears that the code that caps B2 at 999*B1 needs to change.
B2 = 76 billion in under 2 minutes!


[Work thread Nov 24 22:56] M80071 stage 1...
Forum: Software 2021-11-24, 15:01
Replies: 63
Views: 704
Posted By Prime95
1) The algorithm requires "spare bits" in each...

1) The algorithm requires "spare bits" in each FFT word. Should you decide to run the pre-beta, turn on round-off checking to make sure I've not made a mistake in estimating the correct number of...
Forum: Software 2021-11-24, 12:21
Replies: 63
Views: 704
Posted By Prime95
Exclamation Prime95 30.8 (pre-beta) (FOR P-1 USERS ONLY; SMALL EXPONENTS ONLY)

On my quad core, 8GB machine:

version 30.7:

[Work thread Nov 23 11:19] P-1 on M26899799 with B1=1000000, B2=30000000
[Work thread Nov 23 11:19] Using FMA3 FFT length 1440K, Pass1=320,...
Forum: Data 2021-11-23, 06:08
Replies: 966
Views: 124,122
Posted By Prime95
Can you give me two similar exponents to P-1...

Can you give me two similar exponents to P-1 please. I'll run one on 30.7 and play with the other in 30.8.
Forum: Data 2021-11-23, 02:51
Replies: 966
Views: 124,122
Posted By Prime95
A recommendation for all users. Concentrate your...

A recommendation for all users. Concentrate your P-1 efforts on larger exponents. 30.8 has some exciting P-1 developments coming. The smaller the exponent, the more P-1 will benefit from the new...
Forum: Software 2021-11-19, 15:51
Replies: 22
Views: 703
Posted By Prime95
Keep the save file. Version 30.8 may be able to...

Keep the save file. Version 30.8 may be able to complete stage 2.
Forum: Software 2021-11-18, 23:37
Replies: 22
Views: 703
Posted By Prime95
Prime95 is the wrong tool for the job. Use...

Prime95 is the wrong tool for the job. Use GMP-ECM.
Forum: Software 2021-11-18, 20:16
Replies: 148
Sticky: Prime95 30.7
Views: 12,806
Posted By Prime95
Before embarking on huge P-1 bounds, consider...

Before embarking on huge P-1 bounds, consider using GMP-ECM or waiting for version 30.8.
Forum: Software 2021-11-15, 06:13
Replies: 148
Sticky: Prime95 30.7
Views: 12,806
Posted By Prime95
Build 9 available.

Build 9 available.
Forum: Software 2021-11-13, 23:49
Replies: 148
Sticky: Prime95 30.7
Views: 12,806
Posted By Prime95
Dobri's TF problem is already fixed. I'll upload...

Dobri's TF problem is already fixed. I'll upload a new build in a few days.
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