PPS-Mega Prime!
Source:  PrimeGrid
mercredi 15 mars 2017 14:42

On 12 March 2017 18:28:04 UTC, PrimeGrid’s PPS Mega Prime Search project found the Mega Prime: 861*2^3377601+1 The prime is 1,016,763 digits long and will enter Chris Caldwell's The Largest Known Primes Database ranked 205th overall. The discovery was made by Mike Kinney (Mektacular) of the United States using an Intel(R) Core(TM) i5-6500 @ 3.20GHz with 16GB RAM, running Microsoft Windows 10 Professional Edition. This computer took about 53 minutes to complete the primality test using LLR. Mike is a member of the Crunching@EVGA team. The prime was verified on 12 March 2017 18:47:34 UTC by Stefan Geiger (Steve) of Austria using an Intel(R) Core(TM) i7-6700K CPU @ 4.00GHz with 16GB RAM, running Microsoft Windows 10 Professional Edition. This computer took about 52 minutes to complete the primality test using LLR. Stefan is a member of the Aggie The Pew team. For more details, please see the official announcement.


DENIS Subproject: REPLICA
Source:  DENIS@Home
mercredi 15 mars 2017 11:22

Abstract: The main objective of this subproject is to measure the performance of DENIS@Home replicating real studies previously published and comparing our results with the time needed in other computer systems. Compare DENIS@Home against real studies will help the scientific community to see exactly in which situations is more useful to use a Volunteer Computing approach over other alternatives.

General Information

Researchers: Joel Castro, Violeta Monasterio, Jesús Carro.
DENIS version: DENIS Natrium (version 1)
App in DENIS: DENIS REPLICA

Description

This subproject has been created to analyze the performance of DENIS with the aim of show it to the scientific community. To do this, we will replicate two real studies previously published that represent the most tipycall experiments that need a high computational capacity.

We have selected two experiments:

  • The experiment performed by Gemmell et al. (2014) uses the Shannon et al. (2004) model and the Mahajan et al. (2008) model. For each model, it runs 15,625 simulations of each Cycle Length.

Application Information

This application will use more models that DENIS Natrium default version. The models added to this project are (this list could increase):

Phases

  • Replication of the simulations performed by Gemmell et al. with the model of Shannon et al. (2004). In progress
  • Replication of the simulations performed by Gemmell et al. with the model of Mahajan et al. (2008). In progress
  • Evaluation of the results. To do



Meet a World Community Grid Team Member: Al Seippel
Source:  World Community Grid News and Updates
mardi 14 mars 2017 16:36

This team member was an experienced coder by the time he was in his teens, and began working for IBM while still in college. Meet Al Seippel in this article.


Network interruptions 15th of March
Source:  vLHCathome
mardi 14 mars 2017 10:58

Due to a network upgrade in the CERN computer centre, connections to LHC@home servers will intermittently time out tomorrow Wednesday morning between 4 and 7am UTC.

BOINC clients will retry later as usual, so this should be mostly transparent.


Network interruptions 15th of March
Source:  LHC@Home Classic : SIXTRACK
mardi 14 mars 2017 10:58

Due to a network upgrade in the CERN computer centre, connections to LHC@home servers will intermittently time out tomorrow Wednesday morning between 4 and 7am UTC.

BOINC clients will retry later as usual, so this should be mostly transparent.


Gerasim@home:
Source:  Gerasim@home
mardi 14 mars 2017 05:28

В проекте начат новый эксперимент, целью которого является наполнение базы канонических форм (КФ) ортогональных диагональных латинских квадратов (ОДЛК). Подробнее об этом можно почитать здесь: http://forum.boinc.ru/default.aspx?g=posts&m=86752#post86752

The project launched a new experiment aimed to fill the base of canonical forms (CF) of orthogonal diagonal Latin squares (ODLS). More details about this can be found here: http://forum.boinc.ru/default.aspx?g=posts&m=86752#post86752




Upcoming Maintenance
Source:  Collatz Conjecture
lundi 13 mars 2017 23:45

The current firewall keeps randomly rebooting and after it restarts, I have to reboot the Comcast modem in order for it to link up. A new firewall should arrive Wednesday and if all goes well, will replace the old one the same day.


GFN-262144 Mega Prime!
Source:  PrimeGrid
lundi 13 mars 2017 13:23

On 11 March 2017, 18:07:33 UTC, PrimeGrid’s Generalized Fermat Prime Search found the Generalized Fermat mega prime: 2611204^262144+1 The prime is 1,682,141 digits long and enters Chris Caldwell's The Largest Known Primes Database ranked 5th for Generalized Fermat primes and 52nd overall. The discovery was made by Roman Vogt (Tabaluga) of Germany using an NVIDIA GeForce GTX 580 in an Intel(R) Core(TM) i7-2700K CPU @ 3.50GHz with 8GB RAM, running Microsoft Windows 10 Professional Edition. This GPU took about 46 minutes to probable prime (PRP) test with GeneferOCL4. Roman is a member of the Sicituradastra. team. The prime was verified on 12 March 2017, 12:13:28 UTC by Markus Tervooren (mtervooren) of Germany using an AMD Ellesmere GPU in an AMD Phenom(tm) II X6 1090T with 8GB RAM, running Linux. This computer took about 29 minutes to complete the probable prime (PRP) test. The PRP was confirmed prime by an Intel(R) Core(TM) i7-7700K CPU @ 4.20GHz with 16GB RAM, running Windows 10 Professional Edition. This computer took about 7 hours 28 minutes to complete the primality test using LLR. For more details, please see the official announcement.


SSL support
Source:  WUProp@Home
dimanche 12 mars 2017 13:17

I installed a SSL certificate on server. Most of hosts can attach via the secure url: https://wuprop.boinc-af.org/.
If you use an old version (before 7.2) or an old OS, I recommend you use old URL: http://wuprop.boinc-af.org/


Server is running again
Source:  Asteroids@home
vendredi 10 mars 2017 18:10

Server unfortunately run out of free space. It has been dealt with it and now it is running again.
I am sorry for very late response, I'll inform you as soon as possible next time.

Radim Vančo (FoxKyong)