ARGOMENTO:

Tra pochi giorni il team attuale su PrimeGrid sarà reso ufficiale, Ghz ne assumerà il controllo come per tutti gli altri progetti!

Controllo del team preso!
Ho corretto il nome e i dettagli (logo, descrizione, link!). Appena posso lo aggiungo alle stats e nel menù sul portale, così possiamo inserirci la descrizione

Ciao,
GHz

GHz ha scritto:

lo aggiungo alle stats e nel menù sul portale, così possiamo inserirci la descrizione

NOOO! UN'ALTRA???
ma quando finiscono ste descrizioni??

GHz ha scritto:

Controllo del team preso!
Ho corretto il nome e i dettagli (logo, descrizione, link!). Appena posso lo aggiungo alle stats e nel menù sul portale, così possiamo inserirci la descrizione

Ciao,
GHz

EVIVAAAA!!!!!
Grande GHz!!
Finalmente il team su PrimeGrid è ufficialeeee!!!!

Grazieee!!!

2008-05-07 15:45 UTC Problems saving preferences
We are aware of the issues saving your preferences (the message states that the changes have been saved, which doesn't actually happen), and are working to resolve the issue. It has been reported that logging out and in again helps, so you might try that as a workaround.
UPDATE: as of 16:00 UTC preferences saving should work.

Benva ha scritto:

2008-05-07 15:45 UTC Problems saving preferences
We are aware of the issues saving your preferences (the message states that the changes have been saved, which doesn't actually happen), and are working to resolve the issue. It has been reported that logging out and in again helps, so you might try that as a workaround.
UPDATE: as of 16:00 UTC preferences saving should work.

Grazie della news Benva!

Ultimamente ho un pò da fare e ogni tanto mi perdo qualche cosa... sorry!

No problem

2008-05-09 01:40 UTC
PrimeGrid's Challenge series continues. Please come join our effort to reach n=5 million in the 321 Prime Search (3*2^n-1). The Challenge will begin 00:00 UTC, 15 May 2008. For more information, please see this forum thread .

Si ma qui dice che per le wu di 321 ci vogliono circa 6.5 ore su un C2Q @2.4GHz e su un Athlon64 3200 @2 GHz ce ne vorranno circa 15-16 e forse anche qualcosina in più:

Message 8988 - Posted 9 May 2008 21:35:19 UTC
Last modified: 10 May 2008 14:06:59 UTC
Welcome to the "Drive for Five" Challenge

PrimeGrid is attempting to reach n=5 million for 321 Search (currently at n~4.4M).

321 Search began in February 2003 by Paul Underwood and grew into a distributed prime search effort for the form 3*2^n-1. The initial goal was to build upon the completed work at Proth Search and extend the list of known primes to an exponent of 1 million (n=1M). That was quickly achieved so they advanced their goal to finding a mega prime for which they sieved up to n=5M.

As seen on PrimeGrid’s front page, that goal was achieved on 23 Mar 2008, 7:57:28 UTC, when Dylan Bennett of Canada returned a positive result for n=4235414 (3*2^4235414-1). official announcement | decimal representation

Now all that’s left is to complete the sieved work up to n=5M. Thus the name “Drive for Five”. There’s still a chance that a mega prime exists between now and n=5M.

The Challenge will begin 15 May 2008 00:00 UTC and end 1 June 2008 00:00 UTC or until all WU’s have been completed, whichever comes first. Application builds are available for Linux 32 bit and Windows 32 bit. These applications will be sent to 64 bit clients. Unlike the “Ides of March” Challenge, there is no advantage of 64 bit over 32 bit this time.

ATTENTION: This Challenge is not for the weak of heart. WU’s will take a minimum of 6.5 hours on fast computers (C2Q 2.4GHz) and upwards of 15 hours on slower computers (Athlon64 2.1GHz). It is HIGHLY RECOMMENDED that your systems be stable as the primality program LLR does not tolerate "even the slightest of errors." Please see this post for more details on how you can "stress test" your computer: www.primegrid.com/forum_thread.php?id=857&nowrap=true#8317

Scores will be kept for individuals and teams. Only WU’s that are issued and returned with a valid result during the Challenge dates will be counted. We will use the “prime score” method which is based on the n value (3*2^n-1) to score the challenge. The only difference is that the primary and double checker of a WU will receive the same score.

Therefore, each completed WU will earn a unique score based on its n value. The higher the n, the higher the score. For more information on scoring, see this thread: www.primegrid.com/forum_thread.php?id=895&nowrap=true#8728.

Please come join the challenge and help 321 Search complete a GREAT journey.

Best of Luck in wrapping up the initial stage of the 321 Search AND to hopefully finding another MEGA PRIME!!!

Additional Information
The “Drive for Five” is part of PrimeGrid’s Challenge series.

Once 321 Prime Search has been completed to n=5M, we will switch over to the +1 form (3*2^n+1). Currently, that prime search is in the Project Staging Area and is ready to enter BOINC as soon as -1 is complete to 5M. WU's are availabe now in LLRNet if you are interested in testing.

We will then take +1 to n=5M. Afterwards, we'll combine 32-1 and 32+1 together and take both up to n=10M. In that range, we expect another 4-6 Mega Primes!

Dice anche che ogni wu avrà un suo tot di crediti che dipende pure dal valore n trovato. Più è grande n più crediti verranno assegnati. Se 2 utenti trovano lo stesso valore (double-checkers) ad entrambi verranno assegnati i crediti corrispondenti.

Ho trovato un Twin Prime:winner:

38739483675*2^333333-1

2008-05-11 14:10 UTC Updated application for TPS subproject - now has a screensaver!
New application version for TPS subproject has been released. If it behaves correctly, I will release it for other subprojects.
For the first time, it also features a screensaver!

A me questo screensaver fa venire il mal di testa, comunque meglio di niente...

user01 ha scritto:

Ho trovato un Twin Prime:winner:

38739483675*2^333333-1

Complimenti!

Ricordo a tutti gli interessati che è partita la "Five Challenge".. ormai già da ieri ma è meglio tardi che mai.. sorry!

cos'è che è partita???

Ducati 749 ha scritto:

cos'è che è partita???

La nuova gara consiste nel trovare n=5000000 per il progetto "3*2^n-1 Search" che cerca i Mega numeri primi. Avevo messo delle news poco sopra che descrivevano il tutto...

ah scusa!
non seguo il progetto e non avevo visto i post sopra

sorry

Ducati 749 ha scritto:

ah scusa!
non seguo il progetto e non avevo visto i post sopra

sorry

Tranquillo!

2008-06-07 14:15 UTC PrimeGrid's Birthday Challenge
PrimeGrid's Challenge series continues with the Birthday Challenge. Please come join us in celebrating PrimeGrid's 3rd Birthday. A 24 hour Challenge is being offered on PrimeGrid's oldest active application, the Twin Prime Search. Hopefully we'll be able to give PrimeGrid a good present by finding the twin during the Challenge. For more information, please see this forum thread.
( www.primegrid.com/forum_thread.php?id=942 )

Dal forum:

Welcome to PrimeGrid's Birthday Challenge

PrimeGrid’s Challenge series continues with the Birthday Challenge. Please come join us in celebrating PrimeGrid’s 3rd Birthday. A 24 hour Challenge is being offered on PrimeGrid’s oldest active application, the Twin Prime Search. Hopefully we’ll be able to give PrimeGrid a good present by finding the twin during the Challenge.

To participate, please select only the TPS LLR project in your PrimeGrid preferences section. The challenge will begin 12 June 2008 00:00 UTC and end 13 June 2008 00:00 UTC. Application builds are available for Linux 32 bit and Windows 32 bit. These applications will be sent to 64 bit clients. As with all LLR application projects, there is no advantage of 64 bit over 32 bit.

Scoring Information
Scores will be kept for individuals and teams. Only work units issued AFTER 12 June 2008 00:00 UTC and received BEFORE 13 June 2008 00:00 UTC will be considered for credit. Since this is a fixed n as well as a fixed credit project, we’ll be using cobblestones for scoring.

Best of Luck in finding the twin primes.

P.S. Please take a look at the next post and learn about PrimeGrid’s evolution.

This is a “fluid” description based on bits and pieces I gathered in the forum. For those who have excellent memories or deft detective skills, please PM me with your suggestions, improvements, corrections, etc.

Introduction

PrimeGrid is a volunteer computing project searching for world record prime numbers. It is built on the Berkeley Open Infrastructure for Network Computing (BOINC) platform. It utilizes the spare CPU cycles of your computer that would otherwise go unused. Combine your CPU power with that of thousands of other computers around the world, and you have a very powerful prime finding “computer”. Anyone with a computer and an Internet connection can participate.

PrimeGrid's primary goal is to bring the excitement of prime finding to the “everyday” computer user. By simply downloading/installing BOINC and attaching to the PrimeGrid project, users can choose from a variety of prime forms to search. With a little patience, you may find a large prime or even a record prime and enter into Chris Caldwell's The Largest Known Primes Database as a Titan!

History

On 12 June 2005, at approximately 14:00 UTC, Message@Home (now PrimeGrid) opened account creation to 50 users. It was being run on Rytis’ home laptop. :)

Message@Home was developed as a test project for PerlBOINC, an attempt to implement the BOINC server system in the Perl programming language in order to bring BOINC server software to Windows. With the primary focus on PerlBOINC, a project was needed that provided a short WU with a standard consistent result.

The first project was Message7, and it attempted by “brute-force” to recover a message encoded with the md5 algorithm. The message was split into parts of 7 symbols of length, and each part was encoded with md5.

In August 2005, the RSA 640 Factoring Challenge application was added. Similar to Message7, this was an attempt by “brute-force” to factor the 640 digit RSA number. The Message7 application was discontinued.

On 1 September 2005, after a short contest to select a new project name, the PrimeGrid name was chosen from a variation of PrimeGrid@Home submitted by Heffed. He was awarded 999 cobblestones for his submission. :)

By November 2005, another effort factored the RSA 640 Challenge so PrimeGrid moved on to the RSA 768 Factoring Challenge. While the chances of solving the challenge remained infinitesimally small, it allowed for further development of PerlBOINC.

In March 2006, RSA 768 Factoring was abandoned for a new application, primegen. It was an attempt to build a sequential prime number database bring PrimeGrid for the first time to the “prime finding” arena. The secondary goal was to also use this to help with the RSA Factoring Challenges. However, it was soon revealed that this effort too had an infinitesimally small chance of succeeding. Nevertheless, it “provided a short WU with a standard consistent result” which “allowed for further development of PerlBOINC”. However, the search for a “computing-time worthy” application was started.

In June 2006, dialog started with Riesel Sieve to bring their project to the BOINC community. Rytis provided PerlBOINC support and RS was successful in implementing their sieve as well as a prime finding (LLR) application. With collaboration from RS, PrimeGrid was able to implement the LLR application in partnership with another prime finding project, Twin Prime Search. In November 2006, the TPS LLR application was officially released at PrimeGrid. Less than two months later, January 2007, the record twin was found by the original manual project. PrimeGrid and TPS then advanced their search for even larger twin primes.

The summer of 2007 was very active as the Cullen and Woodall prime searches were launched. In the Fall, more prime searches were add through partnerships with the Prime Sierpinski Problem and 321 projects. Additionally, two sieves were added: the Prime Sierpinski Problem combined sieve which includes supporting the Seventeen or Bust sieve; and the combined Cullen/Woodall sieve.

Also in the Fall, PrimeGrid migrated some of its systems from PerlBOINC to standard BOINC software. However, many of the services are still remain based on PerlBOINC.

To date, PrimeGrid has directly found two Mega Primes. Additionally, it has advanced the PSP and SoB combined sieve by several years. PrimeGrid has also added a Challenge Series which is proving to be quite fun and exciting to watch.

The immediate future direction of PrimeGrid involves adding more variety to its prime searches as can be seen in the Project Staging Area: Sophie Germain Search (on a quad sieve), 32+1, Proth Prime Search, and generalized Cullen/Woodall searches. Additionally, an Arithmetic Progression (AP26) of length 26 is being investigated. As for the long term future, that remains to be seen.

Timeline of Events and Milestones
(We would like to create an extensive timeline. Again, please PM me with your suggestions, improvements, corrections, etc.)

12 June 2005 – Message@Home goes live with the Message7 application by opening account creation to 50 users
30 Jul 2005 – Rytis buys his first car, a 1997 Renault Megane
August 2005 - the RSA 640 Factoring Challenge application is added and the Message7 application is discontinued
01 September 2005 - Message@Home changes name to PrimeGrid
November 2005 - the RSA 768 Factoring Challenge application is added and the RSA 640 Factoring Challenge application is discontinued
March 2006 - the primegen application is added and the RSA 768 Factoring Challenge application is discontinued
26 November 2006 – TPS LLR application is added
15 January 2007 - Eric Vautier of France finds a record twin prime through the manual TPS effort (2003663613*2^195000-1 and 2003663613*2^195000+1)
July 2007 - Woodall LLR application is added
August 2007 - Cullen LLR application is added
04 Aug 2007 - Lasse Mejling Andersen of Denmark finds a record Woodall Prime (2013992*2^2013992-1)
13 Aug 2007 - Stephen Kohlman of Canada finds a record Woodall Prime (2367906*2^2367906-1)
29 September 2007 – Combined Cullen/Woodall sieve application is added
13 October 2007 – PSP sieve application is added
18 November 2007 – 321 LLR application is added
11 December 2007 – PSP LLR application is added
21 Dec 2007 - Matthew J. Thompson of the United States finds a record Woodall Mega Prime (3752948*2^3752948-1)
29 January 2008 – Rytis buys his second car, 2002 Peugeot 307 2.0HDi, 79kw engine
23 Mar 2008 – Dylan Bennett of Canada finds a 321 Mega Prime (3*2^4235414-1)
13 April 2008 – Project Staging Area added to help facilitate new prime searches into BOINC production
* 10 May 2008 - the primegen application is archived

Milestones

Users

June 2005 - 50 users
July 2005 - 100 users
October 2005 - 500 users
December 2005 - 1000 users
July 2006 - 2000 users
May 2007 - 5000 users
December 2007 - 10,000 users

BOINC Credit

July 2005 - 100,000 cobblestones
August 2005 - 200,000 cobblestones
September 2005 - 500,000 cobblestones
October 2005 - 1,000,000 cobblestones
November 2005 - 2,000,000 cobblestones
December 2005 - 5,000,000 cobblestones
May 2006 - 10,000,000 cobblestones
November 2006 - 20,000,000 cobblestones
July 2007 - 50,000,000 cobblestones
December 2007 - 100,000,000 cobblestones
May 2008 - 200,000,000 cobblestones

2008-06-13 03:00 UTC PrimeGrid's Birthday Challenge
The Birthday Party is over and all the candles have been blown out. Over 200,000 WU's were completed by 84 teams and 374 individuals. Congratulations to L'Alliance Francophone as the top team and Banshee as the top individual. For more stats and information, please see this forum post page.