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Vanishing Fermat Quotients (VFQ) happen when, for primes p and q, q2
divides pq-1. Pace Nielsen has many cases are simplified when the
VFQs have two large factors, and the simplest way to verify that is to show
two large factors. yoyo@home has found four new VFQ factors so far.
16 February 2009 OGR: new versions
All Cruncher versions are updated to the latest 509 version of distributed.net client. Read in the forum about the detailed changes.
15 February 2009 ECM: ElevenSmooth factor found
Stefan Ver3 found a P37 factor from 215120+1 on Valentine's day. Two small factors were previously known; this reduces the composite cofactor from C2063 to C2026.
14 February 2009 OGR-26: End Phase
OGR-26 processed more than 94% and will probably finish this month. Much thanks to all Boinc crunchers. The Boinc Community reached #3 in distributed.net's team stats.
09 February 2009 ECM: OddPerfect
The largest work units have been looking for 55 digit factors of OddPerfect's
Most Wanted Numbers. This weekend we finished a heavy duty pass
through these without success. We had a 30% chance of finding a 55 digit
factor; there is a 20% chance that we missed a 55 digit factor. We will be
revisiting these numbers often checking for 55 and 60 digit factors.
Although it is disappointing to have no Most Wanted Factors, it's exciting to
be this thoroughly tested already.
The smaller work units have been looking for 45 digit factors in a batch of
small residual composites left over from previously factored numbers.
We've had better luck with these, finding several factors already. Behind
this batch there are several special projects in the queue.
04 February 2009 ECM: new projects
The ECM application is now connected to OddPerfect, ElevenSmooth and XYYXF. The currently running factorizations can be seen on this page. I'm also working on a page with all found factors.
20 January 2009 ECM: a regular application
ECM is no test application any more. It's now a regular yoyo@home application. Additionaly the deadline is increased to 5 days for new work units. Now also work units for ElevenSmooth are in the queue.
18 January 2009 OGR: new win32 app
Cruncher 2.1 was updated to dnet version 508b which contains a new MMX assembler core. This improves performance by up to 30%. The progress indicator increases now by 14,3%.
17 January 2009 OGR: new PS3 app
Cruncher 2.10 runs OGR now also on all SPEs. This should drastically increase the performance of the PS3.
17 January 2009 ECM: numbers for OddPerfect
OddPerfect has many tasks that we work on from time to time. The variety of easy and hard tasks keeps things interesting. Yoyo@home's BOINC ecm has already pushed several tasks beyond where William expected to get in all of 2009. In addition we've had the fun of being major contributors to Paul Zimmermann's the Top 10 Factors of 2009.
Read the whole story ...
10 January 2009 ECM: test status
The ECM test runs quite good. 64 bit hosts are much faster than 32 bit hosts. Our test found already some factors and we are listed in the 2009 ECM Top 10.
If somebody is able to compile on Mac contact me. In this case we could release also a Mac version. The boinc lib, the wrapper, libgmp and ECM must be compiled and optimized.
07 January 2009 OGR-NG: status
OGR-26 made significant progress in the last month. Over 50% is completed. We will probably finish this project in March.
29 December 2008 ECM: new subproject
ECM is the next app which is wrapped. Ecm is a program for Elliptic Curve Factorization which is used by a couple of projects to find factors for different kind of numbers.
Some test wus for Linux 32/64 are currently running. To participate on the first tests you must enable test applications in your yoyo@home preferences. Please report problems, suggestions or even success in the forum.
03 December 2008 OGR-NG: small application update
Now are all old ogr wus, which contained only 2 ogr, are over. Therefore I update job.xml to now contain 4 tasks. The progress indicator increases now in 4 steps. To get closer to the PS3 needs I also increased the number of ogr contained in one boinc wu to 7.
30 November 2008 Badges
Since round about one week I'm collecting credits per user and sub project. You will be rewarded with a badge if you reach a certain level of credits per sub project. The following levels exists currently:
Bronze - 10.000 credits
Silver - 100.000 credits
Gold - 500.000 credits
Master - 1.000.000 credits.
Thanks to Rebirther for the work on the icons.
26 November 2008 Project Changes
In preparation to a PS3 version which uses also SPE I increased the amount of ogr which are in one Boinc wu. There are now 4 ogr in one Boinc wu instead of 2.
I also capture credits and number of wus per subproject for teams and user. If somebody want's to generate some nice statistics or signature pictures out if it these stats are exported here.
23 November 2008 OGR-NG: official relased
The OGR cruncher is now official released. I made also an update of the windows client to the latest version (507b) which was released by distributed.net.
21 November 2008 OGR-NG: Solaris Sparc64
I released also a Sparc64 beta client for OGR-NG. Please test and report in the forum if it runs.
20 November 2008 evolution@home
I created now all new evolution@home simulations. On the server status page you can now see how many workunits are available to finish the first basic goal of the new simulation series.
19 November 2008 muon: some statistic
We are providing a continous flow of results to Stephen Brooks Muon1 project. In total 2.77% are provided by the Boinc system. In the current running Linac900Removable6 simulation the Boinc system contributed 21.6%.
16 November 2008 evolution@home: new simulations
A new set of computing tasks is published today in order to further investigate how two different types of slightly harmful DNA changes interact with each other's evolutionary behaviour in a population. The new workunits are named 'evo_A....'. Runtime is up to 2 days (on our 500MHz Pentium reference system).
07 November 2008 OGR-NG: new beta apps
I added beta applications for OGR-NG (ogr next generation). You must enable test applications to get them.
The effective search rate is actually more efficient as these new applications are using an improved algorithm. The new algorithm is named FLEGE (Feiri-Levet Enhanced GARSP Engine). In technical terms, the number of elements in the 'choose lookup table' has been increased from 48K to 2M elements. This optimization will significantly reduce the number of nodes that we have to search through, sometimes a node improvement of ten-fold or more.
Distributed.net estimates that OGR-26 will take much less time to complete than
OGR-25 and will probably be more similar to OGR-24, in terms of
computational effort. Beyond that, distributed.net is looking forward to OGR-27 and
OGR-28 because the current solutions to at least one of the two is
very likely not optimal. OGR-26 is on the way and must be done first
since higher-order rulers depend on the proven optimality of previous
ones.
26 October 2008 OGR-25: Successfully Finished
The 8-year-old OGR-25 distributed computing project has just proven conclusively that the predicted shortest 25-mark Golomb ruler is optimal. 'The total length of the ruler is 480, with marks at positions: 0 12 29 39 72 91 146 157 160 161 166 191 207 214 258 290 316 354 372 394 396 431 459 467 480. (This ruler may alternatively be expressed in terms of the distance between those positions, which is how dnetc displays them: 12-17-10-33-19-...).' 124,387 people participated in the project and two people found the shortest ruler, one on October 10, 2007 and the other on March 24, 2008.
Yoyo@home user participated on this contest for 446 days, calculated 710,813,759 GNodes and reached together #6 in the team ranking.
Big thanks to all participiants.
yoyo
19 October 2008 What next?
In some days ogr will be over. I would enjoy to start the discussion which project should be included next. If you also have contact to the authors of some projects, leave me a message. And of course if somebody is interested to help in the integration, contact me.
I also have some projects on my radar, but will not start the discussion with these ;). So discussion is reopend, give your suggestions in our forum.
12 October 2008 OGR: 0.15% left
Only 0.15% ogr left and we are going to finish the project. Therfore I encourage all users to use only small buffers. Otherwise the OGR would already have been crunched by somebody else and the result does not help the project to finish.
Some weeks ago I changed already some settings for OGR Boinc WUs:
Last night we analysed the problem and decided that we need more memory and a separation of yoyo@home and the rest of the rechenkraft.net page. Thanks to the support which I got in chat and to the donations, we now ordered a new server for yoyo@home.
Our new server is installed and got the yoyo@home backup but is currently not yet online. I think that workunits which reached the server will get credits, but it seems that there are a couple of WUs which were not properly uploaded. For these no credits can be granted. We hope to be online very soon.
26 January 2008 Linux 32 bit 1.09
Version 1.09 of cruncher for Linux 32 bit contains now the newest distributed.net client version 2.9015-504.
14 January 2008 new evolution@home wus
I created some new evolution@home workunits, which are now twice as long as before.
13 January 2008 new PS3 Cruncher
A memory corruption problem was recently detected in the PS3 version of the cruncher. Read more about it in our forum and report problems or even that there are no problems.
06 January 2008 new evo wus
I will create new workunits for evolution@home. The new workunits runs longer than before. Because of missing checkpoints I will grant 30% more credits for all credits which are higher than 100.
06 January 2008 1.04 of evolution@home
Version 1.04 will no more crash if the work unit restarts. But it starts from the very beginning, it does not resume the work unit.
01 January 2008 Evolution@home now productive
The evolution@home application is now productive. By default you will get now workunits from both applications. You can change these settings in your preferences.
yoyo
27 December 2007 Fixed credits for evo
Fixed credits for evolution@home workunits are now in place. Report problems or questions in our forum.
26 December 2007 Best wishes
I wish you a merry christmas and a happy new year. Thank you for supporting yoyo@home and running to rank #25 in the distributed.net team stats.
yoyo
23 December 2007 Top 30 reached
The race between L'Alliance Francophone and SETI.Germany pushed yoyo@home in the top 30 of the overall distributed.net team stats. Thanks fellow crunchers for this christmas gift.
21 December 2007 evolution@home update
Short update information for evolution@home: In the last days I automated the sending of results to Laurence,
the author of evolutio@home. I sent round about 100MB of compressed data. He was on a conference and busy with preparations for it.
But now he reviews and imports the results. As next step I will work on fixed credits to aoid double computing.
I clarified the concept and have now an idea how it could be calculated. If both things are working I will switch from
beta to productive.
14 December 2007 7 times OGR output
Since some days a race between the #1 and #2 team is ongoing. Therefore the
OGR output povided to distributed.net
is now 7 times more than before. I keep a very close eye to the server to ensure everytime enough work units.
02 December 2007 Beta version of evolution@home for Mac
I released a beta version of evolution@home for Mac. Give feedback in the forum.
01 December 2007 Top 50 reached
yoyo@home reached the top 50 in the
overall distributed.net team stats.
25 November 2007 Server status page
I added information on the server status page
to see for which application work units are available.
23 November 2007 1.02 beta of evolution@home
Version 1.02 runs additional to Windows XP also on Windows 2000 and Vista. It has also a progress indicator.
But it is hard to estimate the time to complete a workunit and also the progress. So it may happen that the
workunit finishes already at 50%. But anyway better than no progress indicator.
22 November 2007 First beta of evolution@home
The first beta of evolution@home is running and
it runs better than expected. The results contains already
real usefull simulations which will be send back to the author.
Thanks to rebirther for the logo update.
BTW: If somebody wants to develop
a nice screensaver send me a mail.
20 November 2007 New versions for Mac and Linux
To get rid of the sometimes appearing endless loop at 87% of the wu I created new versions for Intel and PPC Mac
and for 32- and 64 bit Linux. This problem happened for round about 10% of the work units on Mac and Linux.
20 November 2007 Backup
I implemented a database backup and some cleanup of all the generated log and statistics.
The server runs smoothly without any manual intervention. More than 100 days OGR are crunched for distributed.net.
In total individual and team stats we are in the top 100. On daily basis we are in the top 5.
I started now phase III, wrapping the next project.
06 October 2007 Statistics
After two month providing OGR back to distributed.net the yoyo@home Boinc wrapper team is on the
overall rank 157 of all teams in
distributed.net statistic.
OGR has now completed more than 72%
of its search space, predicted end is mid of 2008.
02 October 2007 64 bit Linux version update
Some volunteers reported problems on 64 bit Ubuntu. I hope version 1.08 now fixes this issue. This version is now a native
64 bit version.
30 September 2007 Free BSD version
Added a Free BSD version for Intel.
29 September 2007 Additional clients
Thanks to Dotsch clients for PS3 and Sparc Solaris could be added.
Please test and report success and problems in our forum.
A Boinc 5.11.0 client for Solaris can be
downloaded here.
27 September 2007 OGR project status
OGR has now completed more than 70%
of its search space. Some predictions predict the end for the mid of 2008.
16 September 2007 New validator
A new validator is in operation which grants credits based on calculated GNodes.
Quorum is now set to 1 and credits are granted immediately.
07 September 2007 Statistics
After one month providing OGR back to distributed.net the yoyo@home Boinc wrapper team is on the
overall rank 651 of all teams in
distributed.net statistic.
06 September 2007 Version 1.08
Suspend / resume did not work properly on Windows. This version solves the problem. If there a problems with
this version report it in our forum.
02 September 2007 Parameter for WUs changed
I increased the estimated fpops for a workunit 20 times. This should avoid to many downloads which can not fit the deadline.
For new workunits the deadline is increased to 7 days.
31 August 2007 Version 1.07
Suspend, resume, exit should now works properly in version 1.07.
Thanx to Codemann and scsimodo.
Please report problems in our forum.
29 August 2007 Version 1.06
Version 1.06 contains checkpoints and a progress indicator. Progress bar will be increased every 1/8 of the WU.
Please report problems in the forum.
29 August 2007 64 bit version for Linux
I added a 64 bit version for Linux. Please report problems in
this thread.
14 August 2007 More clients?
If you are interested in clients for different platforms send me a mail (yoyo at mailueberfall dot de)
or post it in our forum.
13 August 2007 Version 1.05 Intel Mac / Linux
Linux version is now static linked and works also on systems with older gcc.
Intel Mac version should now also work. The execute flag on cruncher was missing.
12 August 2007 Profile picture
The problem storing the profile picture is now solved.
10 August 2007 Here we are
Here we are on a new server with fixed IP. Account creation is open.
03 August 2007 Windows version
Big thanks to Codemann who compiled the Windows wrapper and did a great support. The windows version is now also ready for testing and I released new OGR work units to celebrate it. The project now enters Beta state.
If you are interested in applications for other platforms write a mail to yoyo at mailueberfall dot de or use the forum.
If you have problems with the project reset it, it should work afterwards.
31 July 2007 Mac WUs
Big thanks to scsimodo and frost who compiled the Mac wrapper and did a great test. The Mac version is now ready for testing and I released also 100 work units to celebrate it. There is also progress developing the Windows version.
BTW: Account creation is open.
30 July 2007 Linux WUs
Created some work for Linux cruncher to test the work generator, validator and assimilator. The legacy application which is now integrated is the distributed.net client which runs OGR.
29 July 2007 Legacy Application
Integration of the legacy application started. I distributed some work for Linux. Some more will follow soon.
21 July 2007 Fixed Credits
Now fixed credits are granted. I also increased the runtime to 30 minutes. The server was updated to the latest version. Please report problems in the forum.
A big thanks to scsimodo providing the application for Mac.
21 July 2007 Logo
The project now has a logo, thanks to Rebirther.
20 July 2007 Fixed credits
Will test fixed credits this weekend. How many credits should be given for a WU? Send your suggestions to yoyo at mailueberfall.de or in the forum.
19 July 2007 Account creation
Account creation is now opened for the next days.
18 July 2007 Account creation
Account creation will be opened in the next days.
17 July 2007 Windows Applikation
Dank tutta55 vom Team Boinc.be gibt es jetzt auch eine Applikation für Windows.
16 July 2007 Änderungen an WU Verteilung
Es gibt jetzt nur noch 20 WU pro Tag und ein User sollte
jetzt nicht mehr die gleiche WU 2 Mal erhalten.
15 July 2007 update
Der Server läuft erstmal stabil. Ich lass ihn mal laufen. Forum und Wiki
sind auch vorbereitet und verlinkt. Herzlich Willkommen auch an die Yahoo und Google Bots, die sich inzwischen jede WU angesehen haben.
14 July 2007 yoyo@home started
yoyo@home aufgesetzt. Workunits dauern z.Z. ca. 10 Minuten.
Wer unter Linux rechnet und etwas testen will schreibt mir eine email.
Ich richte dann einen Account ein. Es wird Uppercase gerechnet.
Die Workgeneratoren, Feeder und Assimilatoren laufen.
Der Server wird nur gelegentlich mal Online sein, ich hoffe so immer von 20:00 - 22:00
oder auch öfter, mal sehen.
Nächste Schritte: