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  • BOINC@TACC article

    Posted: June 26, 2019, 7:13am CEST
    Check out For the Love of Science, a new article about the BOINC@TACC project at the Texas Advanced Computing Center.
  • BOINC web server failure

    Posted: June 26, 2019, 5:09am CEST
    The machine hosting the BOINC web site, and Science United, failed last Friday, just after everyone had left for the weekend. Fortunately we were able to move the disks to another computer and we're back online as of this morning. We apologize for the inconvenience.

Universe@Home: News

  • Server upgrade

    Posted: June 24, 2019, 10:39pm CEST
    For next few days I will not generate more tasks as I'm preparing to server software update.
    The software will require few restarts and is planned later in this week - I will inform you when it happens exactly.

SRBase: News

  • preparing new bases

    Posted: June 24, 2019, 8:05pm CEST
    As some of you noticed there is a very short runtime on the Riesel Base -short app. This app has a higher priority to spread out enough work for all. Iam preparing more and more new unstarted bases from 1-2.5k range which are running locally with Win64PFGW and the new base script. The range from 2.5k-10k will also be sieved on the server. Its taking too long to run it on a single core (around 3-4 month) so I let it run on BOINC. To reduce the server load all other bases are running at the same time.


  • Planned Server Maintenance

    Posted: June 19, 2019, 4:40pm CEST
    Hi Everyone,

    The MilkyWay@home server will be shut down at noon tomorrow (6/20). We plan on bringing it back online shortly after. If there are any problems, we will post to our social media accounts.

    Thank you for your support!


WEP-M+2 Project

  • Oxford e-Research Centre teams up with ECMWF to enable scientists to run the OpenIFS weather model on thousands of people’s home computers.

    Posted: June 18, 2019, 11:07pm CEST by Sarah Sparrow

    The OpenIFShome project was launched on 18 June during this year’s OpenIFS user workshop at the University of Reading.

    Scientists will be able to study events such as tropical storm Karl, which developed in the Atlantic in September 2016, using the OpenIFShome project. (Image: NASA Visible Earth, LANCE/EOSDIS Rapid Response team)

    OpenIFShome brings together two powerful tools: OpenIFS, an easy-to-use, supported version of ECMWF’s Integrated Forecasting System (IFS) widely used in research and education; and (CPDN) at the University of Oxford, a highly successful volunteer computing project that has been running since 2003.

    “CPDN has benefited from the power provided by more than 600,000 home computers over the last 15 years and currently has about 32,000 active volunteers on board,” says Professor David Wallom, who oversees innovation at the Oxford e-Research Centre (Department of Engineering Science).

    “By exploiting the distributed computing power provided by tens of thousands of volunteers, CPDN can run weather and climate experiments that would be too computationally demanding even for supercomputers,” he points out.

    David explains that such computing power is required when scientists want to run thousands of slightly perturbed versions of a model for the same event.

    “Very large ensembles of weather and climate simulations are essential to study the predictability of extreme events,” says Antje Weisheimer, an ECMWF scientist who also works at the University of Oxford.

    Antje gives the example of Karl, a tropical storm that developed in the Atlantic in September 2016. The NAWDEX field campaign observed the storm as it interacted with the jet stream.

    “This storm attracted a lot of interest among researchers studying the reasons for weather forecast busts in Europe,” Antje says.

    “In order to study the predictability of such storms and their impact on subsequent weather in Europe, we need to run thousands of slightly perturbed simulations, and this is where CPDN comes in.”

    The OpenIFS workshop from 17 to 21 June is devoted to the impact of moist processes on weather forecasts and will include work on Karl.

    On 18 June, David opened an OpenIFS experiment on Karl to some 8,000 CPDN volunteers who have Linux capabilities on their computers.

    At the end of the week, the results will be compared with the outcome of a similar experiment run on ECMWF’s high-performance computing facility.

    OpenIFShome represents a new departure for both OpenIFS and CPDN.

    “The project offers unprecedented possibilities for users of OpenIFS,” says Glenn Carver, who leads the OpenIFS project at ECMWF.

    “If they have limited access to supercomputers or wish to carry out experiments with very large ensembles, OpenIFShome could be for them,” he says.

    Marcus Köhler of the OpenIFS team notes that currently OpenIFShome experiments are limited to a grid spacing of about 125 km.

    But he adds that the maximum horizontal resolution is expected to increase in the future. “As the computing power of home computers increases, it should become possible to carry out higher-resolution experiments using OpenIFShome,” he says.

    Dr Sarah Sparrow, the Programme Coordinator for the CPDN project, notes that OpenIFShome marks a significant expansion of the programme.

    “We had some discussions on the need to move towards a multi-model capability, and OpenIFS seemed like a good choice to expand the CPDN model portfolio.”

    She adds that there is a link with CPDN’s traditional focus on climate since in the future it will be possible to use OpenIFS for extreme event attribution studies. Such studies seek to determine how the probability of occurrence of specific weather events is affected by climate change.

    “Contact with the OpenIFS team at ECMWF was made through Antje, who is based in the Department of Physics at the University of Oxford as well as at ECMWF. The collaboration with ECMWF has been excellent and we look forward to OpenIFShome being put to good use for the benefit of cutting-edge weather and climate research.”

    ECMWF Director of Forecasts Florian Pappenberger welcomed the availability of OpenIFS on CPDN. He said: “I’d like to thank all those involved for the work that has gone into this project. OpenIFShome will facilitate vital research into the predictability of high-impact weather, which will ultimately lead to better weather forecasts for our Member and Co-operating States.”

    Scientists interested in using OpenIFS on CPDN should fill in the OpenIFShome new collaboration enquiry form on the CPDN website.


  • Citizen scientists use Foldit to successfully design synthetic proteins

    Posted: June 6, 2019, 9:04pm CEST

    Citizen scientists can now use Foldit to successfully design synthetic proteins. The initial results of this unique collaboration are described in Nature.

    Brian Koepnick, a recent PhD graduate in the Baker lab, led a team that worked on Foldit behind the scenes, introducing new features into the game that they believed would help players home in on better folded structures. Read more from the Baker Lab.

    Thanks to all Rosetta@home participants who helped in this study. Many of the designs were validated using forward folding on Rosetta@home.

    Read the full manuscript: [https:] PDF


  • NewER runs for Milkyway_nbody

    Posted: June 6, 2019, 6:30pm CEST
    Hey all,

    Sorry, there was a problem with the newest runs for nbody. I've taken them down and replaced them with these runs:

    I apologize for any inconvenience. Thank you once again for your support.

SRBase: News


  • New runs for Milkyway_nbody

    Posted: June 5, 2019, 6:40pm CEST
    Hello all,

    Just wanted to let you know that a new batch of runs for milkyway_nbody were just put on the server. The names of the runs are as follows:

    If you have any issues or questions about these runs, please let me know. Thank you all for your support.

  • News about links to publications

    Posted: June 5, 2019, 2:58pm CEST by Heather Waller

    We have some new webpages that link volunteers to the publications that their computing time has contributed to. They can be accessed via the following url 


    If you click on the paper titles it should take you to the full academic publication.

    We are still in the process of getting scientists to back fill publication information and will obviously make sure new publications are recorded going forwards.


  • Scheduled Maintenance

    Posted: June 4, 2019, 12:10am CEST
    We will be taking PrimeGrid offline for maintenance on Thursday, June 6th. If all goes well, the server will be down for less than an hour. I'm not sure yet exactly when this will be done, but it's unlikely to start before 10:00 UTC. While the server is down, you can keep up with status of the maintenance on our Discord server: [https:]] .


  • New Separation Runs

    Posted: May 31, 2019, 7:08pm CEST
    Hi everyone,

    I put up some new separation runs so that we wouldn't be wasting GPU cycles while I am analysing the results from the last runs. The names of these runs are:


    NOTE that these are very similar to the names of the previous runs, demarcated by only a "1" at the end instead of a "0". These runs have slightly different parameters, so it will be interesting to see whether or not they result in the same problems we were having at the end of the last runs.

    If you have any issues with these runs please don't hesitate to post about it here. There are lots of great people on these forums who try their hardest to help solve these problems.

    Thank you all for your continued support!

    - Tom

SETI@home: News

SRBase: News

  • base R951 proven / Megaprime

    Posted: May 25, 2019, 10:50am CEST
    On 04th of May, whizbang, a member of the team Ars Technica found the last prime for base R951.
    The prime 34*951^371834-1 has 1.107.391 digits and entered the TOP5000 in Chris Caldwell's The Largest Known Primes Database.


  • Hans Ivar Riesel's 90th Birthday Challenge starts May 24th 2019 00:00 UTC

    Posted: May 23, 2019, 11:29am CEST
    To celebrate Hans Ivar Riesel's birthday, PrimeGrid is having a 7 day challenge from May 24th 2019, 00:00 UTC until May 31st, 00:00 UTC. Work units from the TRP (LLR) project, which are downloaded and completed during the challenge will count towards your challenge score. Help us celebrate, maybe find a really big prime number eliminating one of the Riesel k's for Riesel's birthday and earn a cool new badge! Best estimate is 30% chance someone finds a prime during the challenge. For more information and discussion, please see the official challenge thread: []


  • Problems with Receiving Email for Resetting Passwords

    Posted: May 22, 2019, 6:49pm CEST
    Hello all,

    It has come to my attention that there are some people who are having trouble resetting their passwords. More specifically when requesting a link to reset their password, the email with the link to change their password never arrives in their inbox or spam. At the moment, I have been able to reproduce this problem with gmail accounts and some temporary email accounts. So far, I've only been able to get my university email account to receive a password reset link. While I will continue to troubleshoot this issue, I humbly request help in this matter. If you could request a password change and tell me whether or not you receive an email with the password reset link, as well as what email type you are using (gmail, hotmail, yahoo, edu, etc.), it will help me immensely with identifying the root of this problem. I am not asking for you to change your password; I only need to know if the email arrives.
    Thank you in advance for your assistance in this matter.

    -Eric Mendelsohn


  • AVX-512 Now Supported by LLR

    Posted: May 22, 2019, 2:22am CEST
    All of PrimeGrid's LLR applications now support AVX-512 on CPUs with that capability. Those of you that have been using app_info.xml/anonymous platform to run LLR 3.8.23 may now use the stock app if you wish, which is also LLR 3.8.23. UPDATE May 22nd: It has come to my attention that while CPUs with 2 AVX-512 execution units gain a substantial boost in performance, mid-range CPUs with only 1 AVX-512 execution unit may see a significant decrease in performance with the new LLR app. Obviously, this is not intended. For the time being there is no workaround for this. If you have a CPU that supports AVX-512, but has only a single AVX-512 execution unit, you may want to use the anonymous platform mechanism (app_info.xml) to run the older version of LLR. With a challenge starting tomorrow, we won't make changes to the app until at least a week. We apologize for any inconvenience this may cause. UPDATE May 23rd: I've included a list of single and dual unit AVX-512 CPUs here.

SRBase: News

  • base R875 proven

    Posted: May 19, 2019, 4:49pm CEST
    On 22th of April, whizbang, a member of the team Ars Technica found the last prime for base R875.
    The prime 38*875^256892-1 has 755780 digits and entered the TOP5000 in Chris Caldwell's The Largest Known Primes Database.