Good news for the CMS@Home application
Source:  vLHCathome-dev
vendredi 27 janvier 2017 22:03

We've now demonstrated that we can perform all the steps required to bring CMS@Home into a production tool for CMS Monte-Carlo data production. Please see this announcement at LHC@Home for more details.

Good news for the CMS@Home application
Source:  LHC@Home Classic : SIXTRACK
vendredi 27 janvier 2017 21:59

This afternoon we demonstrated the final link in the chain of producing Monte Carlo data for CMS using this project (and the -dev project too, of course), namely the transfer of result files from the temporary Data Bridge storage to a CMS Tier 2 site's storage element (SE). To summarise, the steps are:

o Creating a configuration script defining the process(es) to be simulated
o Submitting a batch of jobs of duration and result-file size suitable for running by volunteers
o Having those jobs picked up by volunteers running BOINC and the CMS@Home application, and the result files returned to the Data Bridge
o Running "merge" jobs on a small cluster at CERN to collect the smaller files into larger files (~2.2 GB) -- this step has to be done at CERN as most volunteers will not have the bandwidth (or data plan!) to handle the data volumes required. This step also serves to a large extent as the verification step required to satisfy CMS of the result files' integrity.
o Transferring the merged files into the Grid environment where they are then readily available to CMS researchers around the world

Thanks, everybody. From here on it gets more political, but we've been garnering support as the project progressed. We now need to move into a more "production" environment and convince central powers-that-be to take over the responsibility of submitting suitable workflows and collecting the results. You will still see some changes in the future, especially as we bring some of the more-advanced features across here from the -dev project.

Outsmart Ebola Together Approaches Completion of Initial Phase
Source:  World Community Grid News and Updates
jeudi 26 janvier 2017 18:43

The Outsmart Ebola Together research team has conducted an enormous number of virtual docking experiments, and they are now ready to embark on a new stage of their research.

Evolution of a black hole ULX
Source:  Universe@Home
lundi 23 janvier 2017 16:02

The investigation of ULX's nature is still in progress and currently we are
waiting for feedback from our collaborators. Meanwhile, I want to share with you
a figure of the evolution of a typical ULX with black hole accretor.

To make the long story short, two massive stars bore in a binary. One which is
heavier expands as a result of its nuclear evolution and starts to shed mass
onto its companion.This mass transfer is dynamically unstable and the second
star becomes engulfed with the primary star's matter. We call this phase a
common envelope and it happens typically when the system's age is between 4 and
5 million years.

If the companion has enough orbital energy, the common envelope is rejected and
the stars' separation shrinks significantly. The primary needs now less than
100,000 years to collapse and form a black hole.

The system's orbital energy is constantly emitted in gravitational waves, which
results in further separation shrinkage. Simultaneously, the secondary star
expands. If it manages to commence the mass transfer onto the black hole within
the first 500 million years (typically during the first 10-20 million years),
the flow will be strong enough to power a ULX.


Nadal trwa badanie właściwości ULX, a obecnie czekamy na informacje zwrotną od
naszych współpracowników. W międzyczasie chcielibyśmy podzielić się z Wami
rysunkiem ewolucji typowego ULXa z akreującą czarną dziurą.

W skrócie, w układzie podwójnym powstały dwie masywne gwiazdy. Cięższa z nich
rozrasta się w skutek ewolucji nuklearnej i zaczyna przelewać masę na gwiazdę
towarzyszącą. Ten transfer masy jest dynamicznie niestabilny i druga gwiazda
zostaje otoczona przez zewnętrzne warstwy pierwszej. Nazywamy tę fazę wspólną
otoczką i zazwyczaj ma ona miejsce, gdy system jest w wieku pomiędzy 4 a 5
milionów lat.

Jeśli towarzysząca gwiazda ma wystarczająco dużo energii orbitalnej, otoczka
zostaje odrzucona, a odległość między gwiazdami znacząco się kurczy. Gwiazda
główna potrzebuje teraz mniej niż 100,000 lat, żeby zapaść się grawitacyjnie i
utworzyć czarną dziurę.

Energia orbitalna systemu jest stale tracona na skutek emisji fal
grawitacyjnych, co skutkuje dalszym kurczeniem się orbity. Jednocześnie druga
gwiazda zwiększa swój promień. Jeśli zdoła rozpocząć transfer masy na czarną
dziurę w ciągu pierwszych 500 milionów lat (zwykle podczas pierwszych 10-20
milionów lat), przepływ będzie wystarczająco silny, żeby zasilić ULXa.

ATLAS/LHC@Home consolidation
Source:  ATLAS@Home
lundi 23 janvier 2017 12:55

Hi all,

As you may know we are working on putting all LHC-related projects under the combined LHC@Home project. The idea is to provide a single entry point for everyone who wants to participate in helping CERN research.

We have now set up a beta app for ATLAS on LHC@Home so we invite you to try it and provide feedback on the ATLAS message board. You need to enable beta apps in your project preferences to get these WU.

Currently the WU there are just for tests and we don't use the results but soon we will proceed with real WU. Once everything is working well there we will ask everyone to migrate over to LHC@Home and stop sending work to the ATLAS@Home project.

Credit will not be lost! We will move all the credit accumulated here to LHC@Home once all the remaining tasks are finished. To make this easier it would be very helpful if your email address you register with is the same on both projects, since this is the only way to match the accounts on each project.

Happy continued crunching,
The ATLAS@Home team

Source:  Gerasim@home
dimanche 22 janvier 2017 15:18

 Запущен новый короткий эксперимент, целью которого является анализ комбинаторных характеристик диагональных латинских квадратов порядка 8.

The new short experiment was started. It is aimed to investigate some values of combinatorial characteristics for diagonal Latin squares of order 8.

Project News Jan 20, 2017
Source:  Rosetta@home
vendredi 20 janvier 2017 09:00

Journal post from David BakerHi Everybody! this has been a good week with papers in this and last weeks Science magazine. your contributions were essential for both breakthroughs! here is some of the press you might find interesting: thank you again for your invaluable contributions to this research!! David

SETI@home volunteer parent and child in SF Bay area wanted for TV interview.
Source:  SETI@Home
jeudi 19 janvier 2017 22:31

We have been approached by the producer of a Japanese television documentary about SETI which will feature SETI@home. They are hoping to interview some SETI@home volunteers in early February in the bay area. If possible they would like to interview a parent and young child who are both excited about science and SETI. If that describes you and you are willing to be interviewed, please contact me either by private message or by email ( korpela at ).

Meet a World Community Grid Team Member: Jonathan Armstrong
Source:  World Community Grid News and Updates
jeudi 19 janvier 2017 18:24

This Texan's role with World Community Grid focuses on helping the researchers' work run smoothly, and he's just as focused outside of work. Meet Jonathan!

12-digit factor of P2203 has now been found by the project...
Source:  WEP-M+2 Project
jeudi 19 janvier 2017 12:52

...103782 times