Re: Mersenne: P-1 Credit

2000-09-11 Thread Scott Kurowski

Hi Eric,

Eric Hahn [EMAIL PROTECTED] wrote:
 Terry S. Arnold wrote:
Does anyone have any skinny on when we will start getting credit for
1.  doing P-1 testing?
2.  finding a factor during P-1 testing?

AFAIK, from what George has said, credit will eventually be given
after BOTH v21 comes out, and the Scott has time to do some
modifications to the PrimeNet server...  Time Frame?  ...??...

Changes to support this are being designed.  Mostly we needed to first get
the next-generation Entropia network deployed to support v21 and other
applications.  This has been happening for a while now, so we will be
resuming a focus on GIMPS soon.

Regards,
scott kurowski

Entropia, Inc.

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Re: Mersenne: P-1 Credit

2000-09-11 Thread Scott Kurowski

Hi Eric,

Eric Hahn [EMAIL PROTECTED] wrote:
 Terry S. Arnold wrote:
Does anyone have any skinny on when we will start getting credit for
1.  doing P-1 testing?
2.  finding a factor during P-1 testing?

AFAIK, from what George has said, credit will eventually be given
after BOTH v21 comes out, and the Scott has time to do some
modifications to the PrimeNet server...  Time Frame?  ...??...

Changes to support this are being designed.  Mostly we needed to first get
the next-generation Entropia network deployed to support v21 and other
applications.  This has been happening for a while now, so we will be
resuming a focus on GIMPS soon.

Regards,
scott kurowski

Entropia, Inc.

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Mersenne: P-1 Credit

2000-09-07 Thread Terry S. Arnold

Does anyone have any skinny on when we will start getting credit for
1.  doing P-1 testing?
2.  finding a factor during P-1 testing?

Terry

Terry S. Arnold 2975 B Street San Diego, CA 92102 USA
[EMAIL PROTECTED] (619) 235-8181 (voice) (619) 235-0016 (fax)

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Re: Mersenne: P-1 Credit

2000-09-07 Thread Steve

I've found 2 factors so far during P-1 testing and received 0.001 years
(about 8 or 9 hours) credit for each. Not much consolation as it 'cost'
upwards of 100 P90 hours each to find them, but it beats getting no credit
for spending the same amount of time not finding any.

Steve "binarydigits" Harris
[EMAIL PROTECTED]

-Original Message-
From: Terry S. Arnold [EMAIL PROTECTED]
To: [EMAIL PROTECTED] [EMAIL PROTECTED]
Date: Thursday, September 07, 2000 1:46 AM
Subject: Mersenne: P-1 Credit


Does anyone have any skinny on when we will start getting credit for
1.  doing P-1 testing?
2.  finding a factor during P-1 testing?

Terry

Terry S. Arnold 2975 B Street San Diego, CA 92102 USA
[EMAIL PROTECTED] (619) 235-8181 (voice) (619) 235-0016 (fax)

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Re: Mersenne: P-1 Credit

2000-09-07 Thread Eric Hahn

Terry S. Arnold wrote:
Does anyone have any skinny on when we will start getting credit for
1.  doing P-1 testing?
2.  finding a factor during P-1 testing?

AFAIK, from what George has said, credit will eventually be given
after BOTH v21 comes out, and the Scott has time to do some 
modifications to the PrimeNet server...  Time Frame?  ...??...

Eric



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Re: Mersenne: P-1 Credit

2000-09-07 Thread Brian J. Beesley

On 7 Sep 00, at 9:27, Steve wrote:

 I've found 2 factors so far during P-1 testing and received 0.001 years
 (about 8 or 9 hours) credit for each. Not much consolation as it 'cost'
 upwards of 100 P90 hours each to find them, but it beats getting no credit
 for spending the same amount of time not finding any.

You always did get a small amount of credit for finding a factor 
(using trial factoring) compared with the effort that went in i.e. 
you got about 10x as much credit for running trial factoring 
unsuccessfully than for finding the "largest possible" factor in the 
range you were searching.

I think PrimeNet credits factors found using P-1 as though they were 
found using trial factoring.

However there is, as yet, no credit given for unsuccessful P-1 
factoring effort.

Don't lose sight of the fact that the purpose of running P-1 is to 
save time overall by avoiding running LL tests on those exponents 
which happen to be susceptible to P-1 factoring effort.

Also, if you're running LL tests, you're certainly spending not more 
than 5% of your total effort running P-1 (significantly less than 
that if you're running double-checks), which is more than offset by 
the efficiency improvement between v18 and v19.


Regards
Brian Beesley
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