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Final data is in the splitter queue.

SETI@Home - Ut, 31.03.2020 - 18:23
As promised, we've stopped the process that puts new data into the queue today. Data distribution will continue until the files shown on the status pages are done. We'll be accepting results and resending results that didn't validate for a while.
Kategórie: Novinky z projektov

And Another SR5 Mega Prime!

PrimeGrid - Ut, 31.03.2020 - 16:55
On 16 March 2020, 08:21:46, PrimeGrid’s Sierpinski/Riesel Base 5 Problem project eliminated k=207494 by finding the mega prime: 207494*5^3017502-1 The prime is 2,109,149 digits long and enters Chris Caldwell's “The Largest Known Primes Database” ranked 75th overall and is the largest known base 5 prime. 63 k’s now remain in the Riesel Base 5 problem. The discovery was made by Todd Pickering (EXT64) of Germany using an the United States using an AMD EPYC 7601 32-Core Processor with 126GB RAM, running Linux Ubuntu. This computer took about 1 day, 17 hours, 59 minutes to complete the primality test using LLR. Todd Pickering is a member of the [H]ard|OCP team. The prime was verified internally using an Intel(R) Core(TM) i7-7700K CPU @ 4.20GHz with 32GB RAM, running Linux Debian. For more details, please see the official announcement.
Kategórie: Novinky z projektov

Another SR5 Mega Prime!

PrimeGrid - Ut, 31.03.2020 - 16:49
On 12 March 2020, 19:16:51 UTC, PrimeGrid’s Sierpinski/Riesel Base 5 Problem project eliminated k=238694 by finding the mega prime: 238694*5^2979422-1 The prime is 2,082,532 digits long and enters Chris Caldwell's “The Largest Known Primes Database” ranked 76th overall and is the largest known base 5 prime. 64 k’s now remain in the Riesel Base 5 problem. The discovery was made by Chris Howell (Khali) of the United States using an Intel(R) Core(TM) i9-9900K CPU @ 3.60GHz with 32GB RAM, running Microsoft Windows 10 Professional x64 Edition. This computer took about 5 hours, 56 minutes to complete the primality test using LLR. Chris Howell is a member of the Crunching@EVGA team. The prime was verified on 13 March 2020, 21:25:52 UTC by Yuki Yoshigoe (SAKAGE@AMD@jisaku) of Japan using an AMD Ryzen Threadripper 3970X 32-Core Processor with 128GB RAM, running Microsoft Windows 10 Professional x64 Edition. This computer took about 1 day, 5 hours, 24 minutes to complete the primality test using LLR. Yuki Yoshigoe is a member of the Team 2ch team. For more details, please see the official announcement.
Kategórie: Novinky z projektov

SR5 Mega Prime!

PrimeGrid - Ut, 31.03.2020 - 16:40
On 9 March 2020, 21:32:46, PrimeGrid’s Sierpinski/Riesel Base 5 Problem project eliminated k=146264 by finding the mega prime: 146264*5^2953282-1 The prime is 2,064,261 digits long and enters Chris Caldwell's “The Largest Known Primes Database” ranked 74th overall and is the largest known base 5 prime. 65 k’s now remain in the Riesel Base 5 problem. The discovery was made by Wolfgang Schwieger (DeleteNull) of Germany using an Intel(R) Core(TM) i5-8600K CPU @ 3.60GHz with 8GB RAM, running Microsoft Windows 10 Professional x64 Edition. This computer took about 6 hours, 25 minutes to complete the primality test using LLR. Wolfgang Schwieger is a member of the SETI.Germany team. The prime was verified internally using an Intel(R) Core(TM) i7-7700K CPU @ 4.20GHz with 32GB RAM, running Linux Debian. For more details, please see the official announcement.
Kategórie: Novinky z projektov

4 entries in ECMNET top 10 for year 2020

yoyo@home - Po, 30.03.2020 - 00:00
Congratulations to user Crashtest, Henric and nenym. Their found prime numbers are in the ECMNET top 10 for year 2020.
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Jim_S has passed away.

SETI@Home - Ne, 29.03.2020 - 03:58
We are saddened to report that former moderator and long-term friend of SETI@home Jim Scott passed away unexpectedly this morning. Angela has started a thread where people can post their memories of Jim and offer condolences.
Kategórie: Novinky z projektov

Rosetta version 4.12 released for testing. Protocols for COVID-19 and Linux ARM platform added.

RALPH@home - Pi, 27.03.2020 - 23:37
This version contains updated protocols for protein interface design necessary for COVID-19 research among many additional updates and protocols added to Rosetta since the last update.

We are also happy to announce the addition of the aarch64 platform for running Rosetta on linux ARM devices like Raspberry Pi. This was made possible with the tremendous help from a team of volunteer ARM developers and specialists who reached out to the lab and took on the project to successfully port Rosetta for the linux ARM platform. We will post an official announcement as soon as this goes into production on R@h.

Please post issues/bugs regarding this app version in this thread.
Kategórie: Novinky z projektov

SETI@home and COVID-19

SETI@Home - Po, 23.03.2020 - 23:33
SETI@home will stop distributing tasks soon, but we encourage you to continue donate computing power to science research - in particular, research on the COVID-19 virus. The best way to do this is to join Science United and check the "Biology and Medicine" box.
Kategórie: Novinky z projektov

Doubled number of hosts

GPUGRID - Po, 23.03.2020 - 14:43
If I am not missing anything, GPUGRID volunteers doubled the number of active hosts in the last month. It may have been either due to the closing of seti@home, or a consequence of folding at home’s covid effort. (Credits: Boincstats)
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Server disk full being addressed

GPUGRID - Ne, 22.03.2020 - 22:48
I'm working to resolve. Thanks for the support :) -T
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New Runs for MilkyWay@home N-Body (3/20/2020)

Milkyway@Home - Pi, 20.03.2020 - 18:59
Hello,

I am writing to let you all know that we have just put some new runs up:
-de_nbody_03_20_2020_v176_40k__sim__1
-de_nbody_03_20_2020_v176_40k__sim__2
-de_nbody_03_20_2020_v176_40k__sim__3

Thank you all for your support,

-Eric
Kategórie: Novinky z projektov

New SETI Perspectives: "How did life begin on Earth and elsewhere?"

SETI@Home - Pi, 20.03.2020 - 00:49
Richard Lawn has posted a new SETI Perspective entitled How did life begin on Earth and elsewhere?.
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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