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Novinky z projektov

PrimeGrid and BOINC are looking for experienced Macintosh Developers

PrimeGrid - Ut, 19.02.2019 - 13:35
PrimeGrid is currently looking for a volunteer developer to build, test and maintain Mac apps. The current developer of PrimeGrid (and other applications that are used in the mathematics/prime search world) is no longer able to help us maintain the applications, which means that we may need to drop support for Macs over time (no such changes are planned right now or in the immediate future). If you are able to help us, please don't hesitate to get in touch. Moreover, the Berkeley Open Infrastructure for Network Computing (BOINC) open source project, which is the software infrastructure used by PrimeGrid and many other volunteer distributed computing projects, is also looking for volunteers to develop and maintain the BOINC client on Macintosh. The BOINC Client and Manager are C++ cross-platform code supporting MS Windows, Mac, Linux, and several other operating systems. BOINC currently has a number of volunteer developers supporting Windows and Linux, but their main Mac developer is winding down his involvement after many years. He is prepared to help a few new Mac developers get up to speed. If you have Mac development experience and are interested in volunteering time to help support and maintain the BOINC Mac client please have a look at the more detailed description here: ​https://boinc.berkeley.edu/trac/wiki/MacDeveloper If you are not a Mac developer, but have other skills and are interested in contributing to BOINC, the link above also has more general information.
Kategórie: Novinky z projektov

BOINC Open Source Project Looking for Experienced macOS Developers

Einstein@Home - Št, 14.02.2019 - 12:38

The Berkeley Open Infrastructure for Network Computing (BOINC) system is the software infrastructure used by Einstein@Home and many other volunteer distributed computing projects. The BOINC Open Source Project is looking for volunteers to develop and maintain the BOINC client on macOS. The BOINC Client and Manager are C++ cross-platform code supporting Microsoft Windows, macOS, Linux, and several other operating systems. We currently have a number of volunteer developers supporting Windows and Linux, but our main macOS developer is winding down his involvement after many years.

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Kategórie: Novinky z projektov

BOINC Open Source Project Looking for Experienced Macintosh Developers

Milkyway@Home - St, 13.02.2019 - 18:46
Hey Everyone,

The Berkeley Open Infrastructure for Network Computing (BOINC) system is the software infrastructure used by MilkyWay@home and many other volunteer distributed computing projects. The BOINC Open Source Project is looking for volunteers to develop and maintain the BOINC client on Macintosh. The BOINC Client and Manager are C++ cross-platform code supporting MS Windows, Mac, Linux, and several other operating systems. We currently have a number of volunteer developers supporting Windows and Linux, but our main Mac developer is winding down his involvement after many years. He is prepared to help a few new Mac developers get up to speed.

If you have Mac development experience and are interested in volunteering time to help support and maintain the BOINC Mac client please have a look at the more detailed description here: ​https://boinc.berkeley.edu/trac/wiki/MacDeveloper

If you are not a Mac developer, but have other skills and are interested in contributing to BOINC, the link above also has more general information.

Best,
Jake
Kategórie: Novinky z projektov

Storage machine crash....

SETI@Home - Pi, 08.02.2019 - 23:34
A machine that was holding 15% of our outgoing workunits has crashed and refuses to start back up. Short term it means that attempts to access those workunits will cause an error until the workunit is marked as bad.

Sorry for the incovenience.
Kategórie: Novinky z projektov

Tips for faster forums

PrimeGrid - Št, 07.02.2019 - 22:33
If you find that loading forum messages is slow, there are two settings you can change on the Community Preferences page: * Check the "Hide Badges" box. If you're not in Europe you probably have a ping time above 100 ms, and loading all those little badge images that everyone earns takes a while. Have you seen how many different badges people have? A tenth of a second for each one adds up. * Check the "Show images as links" box. If a forum post contains an image from a third party site, including all badge or credit signature images, and that site is down or slow, it will significantly slow down loading the forum message page. You can leave avatars and signatures turned on if you wish. They don't affect forum speed significantly.
Kategórie: Novinky z projektov

Thanks for supporting SixTrack at LHC@Home and updates

LHC@home - Ut, 23.01.2018 - 19:08
Dear volunteers,

All members of the SixTrack team would like to thank each of you for supporting our project at LHC@Home. The last weeks saw a significant increase in work load, and your constant help did not pause even during the Christmas holidays, which is something that we really appreciate!

As you know, we are interested in simulating the dynamics of the beam in ultra-relativistic storage rings, like the LHC. As in other fields of physics, the dynamics is complex, and it can be decomposed into a linear and a non-linear part. The former allows the expected performance of the machine to be at reach, whereas the latter might dramatically affect the stability of the circulating beam. While the former can be analysed with the computing power of a laptop, the latter requires BOINC, and hence you! In fact, we perform very large scans of parameter spaces to see how non-linearities affect the motion of beam particles in different regions of the beam phase space and for different values of key machine parameters. Our main observable is the dynamic aperture (DA), i.e. the boundary between stable, i.e. bounded, and unstable, i.e., unbounded, motion of particles.

The studies mainly target the LHC and its upgrade in luminosity, the so-called HL-LHC. Thanks to this new accelerator, by ~2035, the LHC will be able to deliver to experiments x10 more data than what is foreseen in the first 10/15y of operation of LHC in a comparable time. We are in full swing in designing the upgraded machine, and the present operation of the LHC is a unique occasion to benchmark our models and simulation results. The deep knowledge of the DA of the LHC is essential to properly tune the working point of the HL-LHC.

If you have crunched simulations named "workspace1_hl13_collision_scan_*" (Frederik), then you have helped us in mapping the effects of unavoidable magnetic errors expected from the new hardware of the HL-LHC on dynamic aperture, and identify the best working point of the machine and correction strategies. Tasks named like "w2_hllhc10_sqz700_Qinj_chr20_w2*" (Yuri) focus the attention onto the magnets responsible for squeezing the beams before colliding them; due to their prominent role, these magnets, very few in number, have such a big impact on the non-linear dynamics that the knobs controlling the linear part of the machine can offer relevant remedial strategies.

Many recent tasks are aimed at relating the beam lifetime to the dynamic aperture. The beam lifetime is a measured quantity that tells us how long the beams are going to stay in the machine, based on the current rate of losses. A theoretical model relating beam lifetime and dynamic aperture was developed; a large simulation campaign has started, to benchmark the model against plenty of measurements taken with the LHC in the past three years. One set of studies, named "w16_ats2017_b2_qp_0_ats2017_b2_QP_0_IOCT_0" (Pascal), considers as main source of non-linearities the unavoidable multipolar errors of the magnets, whereas tasks named as "LHC_2015*" (Javier) take into account the parasitic encounters nearby the collision points, i.e. the so called "long-range beam-beam effects".

One of our users (Ewen) is carrying out two studies thanks to your help. In 2017 DA was directly measured for the first time in the LHC at top energy, and nonlinear magnets on either side of ATLAS and CMS experiments were used to vary the DA. He wants to see how well the simulated DA compares to these measurements. The second study seeks to look systematically at how the time dependence of DA in simulation depends on the strength of linear transverse coupling, and the way it is generated in the machine. In fact, some previous simulations and measurements at injection energy have indicated that linear coupling between the horizontal and vertical planes can have a large impact on how the dynamic aperture evolves over time.

In all this, your help is fundamental, since you let us carry out the simulations and studies we are interested in, running the tasks we submit to BOINC. Hence, the warmest "thank you" to you all!
Happy crunching to everyone, and stay tuned!

Alessio and Massimo, for the LHC SixTrack team.
Kategórie: Novinky z projektov

LHC@home down-time due to system updates

LHC@home - Ut, 23.01.2018 - 11:19
Tomorrow Wednesday 24/1, the LHC@home servers will be unavailable for a short period while our storage backend is taken down for a system update.

Today, Tuesday 23/1, some of the Condor servers that handle CMS, LHCb and Theory tasks will be down for a while. Regarding the on-going issues with upload of files, please refer to this thread.

Thanks for your understanding and happy crunching!
Kategórie: Novinky z projektov
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