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  • Wildlife@Home: deleting spam accounts
    16.10.2014 19:06 Uhr
    Given the massive amount of spam accounts created recently, I need to write some scripts to go through and delete those spam accounts. It would be impossible to go through by hand and delete thousands of these.

    Right now my plan is to delete accounts with no attached computers, no credit (on CSG or any subproject), and no activity at wildlife@home. Anyone see any flaws in this, or anything I should change?
  • Wildlife@Home: dealing with spam profiles
    16.10.2014 16:33 Uhr
    I’ve added ReCAPTCHA to account creation on the site, so I’m hoping that this will stop a lot of the spam profile creation. I’m going to go through and try to clean up the mass of recent spam accounts that have been made.
  • Wildlife@Home: new test runs/more work units
    16.10.2014 15:44 Uhr
    We have some more data sets to analyze to test things here, and I’ve started up a run with one of them ‘test_hg19_10fa_1′. These should run a lot quicker than the previous batch of work units, but I wanted to check if my custom checkpointing frequency code is working (so they’re not checkpointing every second). If these are working I’ll add some other longer running runs.
  • GPUGRID: GPUGRID statistics graphs
    16.10.2014 01:17 Uhr
    Following up on the announcement to discontinue support for old hardware and the oldest application, here are two graphs showing the normalised throughput of GPUGRID broken down by compute capability and application version. The legends are messed up for some reason – the first graph is cc, {1.3, 2.0, 2.1, 3.0, 3.5, 5.0, 5.2 }, the second app version {42, 60, 65} These will update daily. Matt
  • The Lattice Project: GARLI 2.1 released
    15.10.2014 17:48 Uhr
    I have just released GARLI 2.1 for five platforms (32 and 64 bit Linux, 32 and 64 bit Windows, 64 bit OS X), and have deprecated the 32 bit OS X app version. This version should improve data set load times for large analyses, and may include other improvements that you would notice. Please post if you encounter any problems running the new version.
  • MilkyWay@Home: Server Reboot and Maintenance
    15.10.2014 12:55 Uhr
    Hey everyone,

    We will be doing a quick server reboot and some updating today. If you notice any issues please post them here.

    Jake W.
  • SIXTRACK: 17:00 CET, 15th October, Service back to "normal".
    14.10.2014 15:47 Uhr
    I believe we have finally resolved various issues as of about 16:00 today. Apologies for the downtime. Eric.
  • New publication about extreme summer rainfall in England and Wales
    14.10.2014 14:38 Uhr

    A new publication by our Science Coordinator, Dr Friederike Otto, has been published in Climatic Change about our recent research into extreme summer rainfall events in England and Wales as an example for probabilistic event attribution.

    In the summer of 2007 England and Wales experienced very heavy flooding. Summer precipitation and subsequently flooding are harder to model than winter or autumn rainfall and this recent publication highlights this again. We look at different possible drivers of high precipitation in summer and do not find a conclusive signal apart for the July precipitation which might have been exacerbated due to anthropogenic forcing. However, the focus of the paper is not so much the attribution of the extreme precipitation to external climate drivers but the quantification of the uncertainties involved in such a study. The paper is part of a special issue dedicated to exactly these issues which will soon be published in full.

    Read the full article, which is open source, here.

  • SAT@home: Version 2.02 of pdsat_crypto released
    14.10.2014 06:12 Uhr
    Выпущено приложение pdsat_crypto версии 2.02. Ускорен процесс решения на задачах криптоанализа Bivium примерно на 15 %.

    Version 2.02 of the application pdsat_crypto released. Performance on Bivium problem was increased by about 15%.
  • Live stream: IPCC AR5: Three numbers that matter, and numbers that matter less than you think
    13.10.2014 12:46 Uhr

    A talk by Professor Myles Allen, Tuesday 14 October, 9 am BST

    Watch it live. Tweet using #ecilive

    What the IPCC 5th Assessment Report has to say to the negotiators in Paris 2015

    “This lecture provides an overview of the climate change issue, highlighting what are, in my view, the most important findings of the latest IPCC report and their implications for climate negotiations under the United Nations Framework Convention on Climate Change (UNFCCC). We will focus on three numbers that matter a lot, and mention along the way some other numbers that matter rather less than you might think.

    The first important number is 95%, the level of confidence the climate science community now has that human influence is the dominant cause of the warming observed over the past 60 years. I will explain where this number comes from, with a quick (and colourful) introduction to the methods used for “detection and attribution” in the IPCC Working Group I report, and explain why the apparent “pause” in ocean surface warming over the past decade or so doesn’t really change the big picture.

    The second important number is 40.3 degrees C (105 degrees F), the national average temperature high over Australia on January 7th, 2013. While bad enough for Australia, the significance of that “Angry Summer” for the rest of the world is as an example of the kind of damaging weather event that, subsequent studies have shown, was made substantially more probable by human influence on climate. With the IPCC Working Group II finding that the impacts of climate change on human and natural systems are now evident on all continents and across the oceans, understanding the links between climate change and harmful weather events is becoming important for the UNFCCC’s new “Loss and Damage” agenda, and a key focus of Oxford’s project.

    The third number is the big one: one trillion tonnes. That is the total amount of fossil carbon that the IPCC estimates can be dumped into the atmosphere over the entire Anthropocene epoch while keeping the resulting warming to likely less than two degrees Celcius. Over half a trillion tonnes has already been emitted, and accounting for warming due to other forms of pollution cuts down the remaining “carbon budget” further still. This puts the mitigation challenge into perspective, and helps explain why the IPCC Working Group III report found such a pivotal role for carbon capture and storage in scenarios that have some chance of meeting the two degree goal.

    What are the numbers that matter less than you might think? One of them, although much tweeted, is “97% of scientists agree…” I’ll explain how this kind of opinion poll isn’t really relevant to how science, or the IPCC, actually works. Another over-rated number is the Equilibrium Climate Sensitivity (the subject of earlier experiments), which turns out to matter much less than people thought. Finally, if you are hoping for a purely scientific argument that two degrees is the threshold for dangerous anthropogenic interference in the climate system, you will be disappointed: the IPCC reports make it clear that the assessment of what is dangerous has an ethical and moral dimension and cannot be resolved by any purely technical assessment.”


  • GPUGRID: New CPU work units
    12.10.2014 11:53 Uhr
    I’m starting testing again on the “cpumd” multi-threaded CPU app. Please post observations here. Matt
  • SIXTRACK: CERN AFS problems
    10.10.2014 15:54 Uhr
    We seem to be having intermittent? problems with our local file system. Server running but…..will fix soonest.
  • yoyo@home: OWS: Deadline reduced to 5 days
    09.10.2014 22:00 Uhr
    The OWS project goes to it’s end. Therefore I reduced the deadline to 5 days.
  • Wildlife@Home: DNA@Home sending out more work
    08.10.2014 18:45 Uhr
    Looks like the assimilator had a hiccup. It’s back up and running now and should be generating work again.
  • Einstein@Home: Project downtime tomorrow
    07.10.2014 11:19 Uhr
    Einstein@Home will be shut down tomorrow (Wednesday Oct 8) morning (CEST) to perform some urgently necessary database work. We expect this to take a couple of hours. BM
  • MilkyWay@Home: New Separation Modfit Version 1.36
    06.10.2014 20:22 Uhr
    Hey Everyone,

    I released a new version of Separation Modfit today (v1.36). If you have any issues with it please post them here.

    Thank you for your continued support,

    Jake W.
  • GPUGRID: Important: hardware and app deprecation for 2015
    06.10.2014 13:56 Uhr
    Hi, With the arrival of Maxwell, we are now supporting 4 generations of hardware, and 6 separate builds of our application on 2 platforms. This is starting to tax our resources, so some rationalisation is required. I therefore propose the following: * Remove support for SM1.3 Geforce 200 series cards contribute rather less than 1% of our capacity and, furthermore, lack hardware features that we want to use in future development work. * Discontinue CUDA 4.2 We need CUDA 6 to properly support the new Maxwell, so I’ll be retiring the old CUDA 4.2 build. If you are still receiving version 4.2 WUs, please consider updating your driver to version 343 or above. These changes will take effect from January 2015 Matt
  • SIXTRACK: Service back; 5th October
    05.10.2014 13:01 Uhr
    I think we are back in business. Lots of work coming, I hope, once we sort out the disk space issue. Sorry for all the hassle and thank you for your continued support.
  • SIXTRACK: Re-enabled daemons
    04.10.2014 17:58 Uhr
    I have painfully cancelled all w-b3 WUs. According to doc they stay in the database but are marked as “not needed”. I have also disabled further WUs of this type until we sort it out. Hope to have saved some 65,000 valid WUs. We shall see tomorrow. Please post to this thread if further problems (I have restarted as root…). It will probably take some time to get back to normal. Report will follow in due course.
  • GPUGRID: CUDA 6.5 app for Linux now available on acemdbeta and acemdshort
    04.10.2014 13:58 Uhr
    Experiences here, please.
  • SIXTRACK: Service disabled
    04.10.2014 08:42 Uhr
    I have managed to stem the flood and disable the service. Apologies and will inform as soon as we are started again.
  • SIXTRACK: Disk Limit increased
    04.10.2014 00:02 Uhr
    I am unable to stop submission. I have upped the limit on disk space to 500MB. I can’t do anything about active WUs but I hope the new limit will suffice for new WUs. More news tomorrow.
  • SIXTRACK: Disk Limit exceeded w-b3
    03.10.2014 22:35 Uhr
    Drastic action being taken to delete the download WUs. This may crash the server…. Apologies for the wasted CPU.
  • OPTIMA@HOME: First experimental data set is submitted
    03.10.2014 16:00 Uhr
    We submitted a series of workunits (4096 wus). Each Wu runs local search for 32 times. So in total 131072 local searches are expected. The precision was set to 0.00001. 10 free parameters for Tersoff potential are fitted.

  • OPTIMA@HOME: Second experimental data set is submitted
    03.10.2014 16:00 Uhr
    We submitted a new series of workunits (12289 wus). Each Wu runs local search for 32 times. So in total 131072 local searches are expected. The precision was set to 0.00001. 10 free parameters for Tersoff potential are fitted.

  • OPTIMA@HOME: New application is deployed!
    03.10.2014 16:00 Uhr
    OPTIMA@home now hosts new application aimed at fitting parameters of the Tersoff potential. Molecular dynamics (MD) is often used for modeling various properties of crystals. The essence of this method consists in the numerical solution of the differential equations describing motion of atoms in the crystal lattice to determine the steady state. For molecular-dynamic computations, you must know the potential – a function that determines the interaction energy of atoms in the lattice. Modern potentials used in the simulations contain several parameters. Specific parameter values determine what concrete material is modeled. For example, for silicon, this will be one set, for diamond another etc. The project is aimed at fitting parameter values of the potential in order to achieve known material properties (energy of the lattice cell, the components of the elastic modulus etc.). Then this potential will be used for molecular dynamics simulation. To identify potential parameters we solve the problem of minimizing the variance of the values of the properties obtained by using the potential from known values. This task is to generate a large sequence of initial approximations, from which further methods local search is a (local) minimum. Next, from the obtained values we select tuples with objective values less than the specified precision.

  • GPUGRID: CUDA 6.5 app now on acemdlong
    02.10.2014 21:17 Uhr
  • GPUGRID: Important news for GTX980 owners
    02.10.2014 21:04 Uhr
    If you are crunching with a GTX980 on Windows, please update your driver to 344.16 I am seeing a very high error rate for 980s with the initial driver release, 344.11 Matt
  • GPUGRID: New acemdshort app 846
    30.09.2014 08:32 Uhr
    I’ve promoted the CUDA65 app version 846 from beta to short. You’ll only get this if you have a Kepler or Maxwell card, and have a CUDA 6.5-capable driver, in practice rev 343 or higher. Please post any problems or regressions here. Matt
  • Wildlife@Home: anyone else missing credits after the swap to the new boinc per-app credit system?
    30.09.2014 00:35 Uhr
    Please let me know. Also let me know if your accounts were linked or not. I’m trying to debug a potential problem here.

Autor: crille
Datum: Samstag, 7. Mai 2011 11:11
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