mersenneforum.org  

Go Back   mersenneforum.org > Search Forums

Showing results 1 to 23 of 23
Search took 0.01 seconds.
Search: Posts Made By: error
Forum: Software 2019-07-27, 06:54
Replies: 7
Views: 762
Posted By error
What was the problem? PRP tests with earlier...

What was the problem?
PRP tests with earlier versions still good?
Forum: Software 2019-07-19, 20:16
Replies: 7
Views: 762
Posted By error
p-1 issue with Prime95

There seems to be a problem with p-1 test on certain numbers by Prime95.
I'm testing numbers of the form 2*3^n+1 (Williams numbers MP 3).
p-1 test by Prime95 fails to find most of the smooth...
Forum: Software 2018-10-15, 13:09
Replies: 441
Views: 60,257
Posted By error
Do you still have the savefile there? If you do,...

Do you still have the savefile there? If you do, it will cause the crash. That happens to me too. I use 28.5 on Win7.
Forum: Software 2018-10-15, 11:30
Replies: 441
Views: 60,257
Posted By error
There is something funny with your save file. ...

There is something funny with your save file.

This job runs just fine:

[Worker #1]
ECM2=1,3,34961,-1,50000,5000000,1,4898604651034280,"2"
resulting in

[Oct 15 14:14] ECM on 3^34961-1:...
Forum: PrimeNet 2018-03-22, 14:34
Replies: 2,041
Views: 163,115
Posted By error
Known factors should be put in between quotation...

Known factors should be put in between quotation marks: ...,"known,factors"
Forum: GPU Computing 2017-08-15, 13:29
Replies: 293
Views: 38,430
Posted By error
Your idea seems like a great concept. Now we...

Your idea seems like a great concept.

Now we mostly need a change in the general attitude - that a 99.9% correct PRP-test is better than a 97% (or 98.5%) correct P-test.

Perhaps all future...
Forum: GPU Computing 2017-08-10, 07:18
Replies: 293
Views: 38,430
Posted By error
Not exactly. The scanario applies to the case...

Not exactly. The scanario applies to the case where, after an indication of failure, you decide to start all over from the beginning but already have interim residues at some intervals saved. You go...
Forum: GPU Computing 2017-08-09, 09:16
Replies: 293
Views: 38,430
Posted By error
This would probably depend on the frequency of...

This would probably depend on the frequency of the errors caught.

If single errors are observed only during a few complete tests and there are many (at least apparently) good tests in between,...
Forum: GPU Computing 2017-08-09, 08:53
Replies: 293
Views: 38,430
Posted By error
Nice presentation! But I did not understand...

Nice presentation!

But I did not understand why it is a problem if r < 0

Since (a*b|n) = (a|n)(b|n) and (-1|n) = (-1)^((n-1)/2), isn't (-r|n) = (r|n)(-1)^((n-1)/2) so that the negative value...
Forum: GPU Computing 2017-08-08, 10:33
Replies: 293
Views: 38,430
Posted By error
If I understand that right, sumin = sumout check...

If I understand that right, sumin = sumout check can only find errors in one individual iteration, where it is made.

"Jacobi-flip" sustains in subsequent iterations as well.

If more than one...
Forum: GPU Computing 2017-08-08, 08:23
Replies: 293
Views: 38,430
Posted By error
At the beginning R0 = 4 This is always...

At the beginning R0 = 4

This is always (R0+2/Mp) = -1 and (R0-2/Mp) = 1

The next residue is R1 = R0^2-2

This computes as (R1+2/Mp) = (R0^2/Mp) = 1 and (R1-2/Mp) = (R0^2-4/Mp) =...
Forum: GPU Computing 2017-08-08, 05:56
Replies: 293
Views: 38,430
Posted By error
Ah, OK. See...

Ah, OK. See https://en.wikipedia.org/wiki/Jacobi_symbol

Basically you check the numbers mod 4 or 8, swap them around, take the remainder, and repeat until you end up with 1 or 2.
Forum: GPU Computing 2017-08-08, 05:33
Replies: 293
Views: 38,430
Posted By error
You mean it is too tedious? You could do...

You mean it is too tedious?

You could do that at every 10^6 iterations or whatever with marginal overall cost and still save a lot of time potentially. If it flips anywhere in between, you have a...
Forum: GPU Computing 2017-08-07, 17:50
Replies: 293
Views: 38,430
Posted By error
It is possible to make a very simple check at any...

It is possible to make a very simple check at any iteration by computing the Jacobi symbol of the residue minus 2 (Res-2/Mp).

All valid LL-residues for Mp will have (Res-2/Mp) = -1

If you make...
Forum: PrimeNet 2017-05-08, 13:22
Replies: 2,041
Views: 163,115
Posted By error
Works. Thanks.

Works. Thanks.
Forum: PrimeNet 2017-05-08, 11:53
Replies: 2,041
Views: 163,115
Posted By error
Manual results submission problem

There is another problem with manual submissions -

For some exponents I get a message like this:
processing: TF factor 15750471591088124777 for M17086021 (https://www.mersenne.org/M17086021)...
Forum: Hardware 2016-11-21, 18:18
Replies: 35
Views: 3,212
Posted By error
There is power but it is not stable enough - DC...

There is power but it is not stable enough - DC filtering has failed because of a bad capacitor.

At least that was the case with my device and the symptoms were just like yours.
Forum: Hardware 2016-11-20, 12:27
Replies: 35
Views: 3,212
Posted By error
Could be a problem with the power supply (bad...

Could be a problem with the power supply (bad capacitor).
I had similar issue and found solution from this link:
https://www.techpowerup.com/forums/threads/my-gigabit-switch.46452/

I replaced...
Forum: PrimeNet 2015-01-22, 14:11
Replies: 497
Views: 50,545
Posted By error
Check http://www.mersenne.org/M989965729......

Check http://www.mersenne.org/M989965729... mersenne.ca is not up to-date.
Forum: PrimeNet 2014-09-13, 16:40
Replies: 2,041
Views: 163,115
Posted By error
Works now. Many thanks!

Works now. Many thanks!
Forum: PrimeNet 2014-09-13, 11:59
Replies: 2,041
Views: 163,115
Posted By error
ECM factors are not accepted as manual...

ECM factors are not accepted as manual submission. Asks for a checksum which is not there.
"Factor found" is not accompanied by a checksum (presumably because factors can not be faked).
Forum: PrimeNet 2014-09-12, 15:14
Replies: 2,041
Views: 163,115
Posted By error
Originally Posted by error...

Originally Posted by error http://www.mersenneforum.org/images/buttons/viewpost.gif (http://www.mersenneforum.org/showthread.php?p=382881#post382881)
Manual results form does not...
Forum: PrimeNet 2014-09-12, 08:36
Replies: 2,041
Views: 163,115
Posted By error
Manual results form does not recognize ECM factor...

Manual results form does not recognize ECM factor found. It responds with

Notice: Undefined variable: b2 in C:\inetpub\www\manual_result\manual_result.inc.php on line 282
Error: Missing checksum....
Showing results 1 to 23 of 23

 
All times are UTC. The time now is 22:49.

Thu Dec 3 22:49:59 UTC 2020 up 19:01, 1 user, load averages: 1.37, 1.43, 1.68

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.

This forum has received and complied with 0 (zero) government requests for information.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.
A copy of the license is included in the FAQ.