- Moo! Wrapper: Unscheduled downtime due to disk problems
05.07.2015 23:29 Uhr
There was an unscheduled downtime on 5th of July from about 13:00 EEST+3 (that’s 10:00 UTC or 3:00 PDT-7) until about 1:30 EEST (22:30 UTC or 15:30 PDT) for a total of 12 hours 30 mins. There might have been problems with services for 2 hours or even longer before the start of downtime.
This was due to disk I/O failures on our main server that meant it had to be brought down for a disk check and temporary repairs. There was no critical data affected as the only file blocks permanently lost due to bad sectors were parts of log files. All other files were repaired successfully.
The affected disk will need to be replaced as it will most likely fail completely soon. This will require additional downtime in coming days.
For now, I’m bringing services back up slowly while the backlog gets processed.
- yoyo@home: Harmonious Tree
05.07.2015 22:00 Uhr
We need to rerun some Harmonious Tree workunits. If you need some points there, now is your chance to catch some.
- NFS@Home: 10,359- factored
04.07.2015 03:35 Uhr
10,359- has been factored by GNFS. It is the product of 101- and 108-digit prime numbers. We still have lots of sieving to do for 6,490+. Thanks for your help!
- NFS@Home: 16e status updated
02.07.2015 22:33 Uhr
The long neglected 16e status page has been updated with the
67 factorizations completed so far this year. We will shortly have an 8th completed. Thanks for all of your contributions!
- climateprediction.net: Climate Change Plays Significant Role in European Heat Wave
02.07.2015 13:27 Uhr
The ongoing heat wave dominating a large swath of Europe is being exacerbated by climate change, according to a new analysis by a team of international scientists using both observational data and climate models.
It is widely accepted that climate change will increase the frequency, intensity and duration of heat waves (Meehl and Tebaldi, 2004). In 2004, a paper published in Nature showed that climate change had at least doubled the risk of the record-breaking 2003 European summer heat wave that is believed to have killed more than 70,000 people.
In this case, as part of the world weather attribution project, our partners at Climate Central convened an international team of scientists from Oxford University, KNMI, Red Cross Red Crescent Climate Centre, along with regional partners from CNRS and MeteoSwiss in order to assess the potential role of global warming on a specific heat event – not just a record hot summer. The team defined the specific heat event for selected European cities (De Bilt, Madrid, Mannheim, Paris, and Zurich) using a reference of 3-day maximum temperature.
Using our large weather@home computing network, we simulated the likelihood of seeing days as hot as as those Europe is experiencing now. At the same time, we also simulated a summer where there is no human-influenced climate change. Comparing those two “worlds” we found that in the 5 cities analyzed, average 3-day high temperatures like those currently being observed and forecast have been made at least twice as likely in the world with climate change.
“The results we currently have should be viewed as preliminary,” said Friederike Otto, “because the observed sea surface temperatures are not yet available for this summer, we have simulated the summer of 2014 as a proxy. However, because it is well understood that the influence of the exact sea surface temperatures in Europe is small compared to the overall effect of global warming, these numbers provide a good first step towards answering the climate question.”
Using a combination of observed and forecast data, scientists from the team at KNMI computed the annual maximum of 3-day maximum temperature (observations up to July 1, forecasts up to July 5).
“There is a strong upward trend in 3-day maximum temperatures over the area affected by this heat wave,” said Geert Jan van Oldenborgh, a climate scientist at KNMI. “The trend is clear both in station data and in reanalysis data.” Because the heat wave is ongoing, the analysis partly relies on forecasts for the next few days. A statistical analysis of the observations shows that the probability of observing such a heat wave has more than doubled over the past 37 years in most of the affected region. In the selected cities the increase is even stronger.
The methodology used in these two approaches is drawn from peer reviewed literature. For more details on each approach please refer to the Methodology outlined for a previous analysis on the record heat in Europe in 2014.
- Meehl, G.A. and C. Tebaldi. 2004. More intense, more frequent, and longer lasting heatwaves in the 21st century. Science 305:994-997.
- Stott, P.A., Stone, D.A., and Allen, M.R. (2004) Human contribution to the European heatwave of 2003. Nature, 432(7017): 610N614
- climateprediction.net: climateprediction.net at Our Common Future Under Climate Change, Paris
02.07.2015 10:28 Uhr
Most of our science team will be in Paris next week for the international science conference, Our Common Future Under Climate Change.
If you’re going, here are the talks that climateprediction.net researchers are involved in:
Tue 07 July
1118 (a) – Attribution of extreme events: How are high impact extreme events changing and why, UNESCO Fontenoy
- 17:30 Attribution of record high daily temperatures in Australia in 2013, D. Karoly (University of Melbourne, University of Melbourne, VIC, Australia), M. Black (University of Melbourne, University of Melbourne, VIC, Australia), S. Lewis, (Australian National University,Canberra, Australia), A. King (University of Melbourne, Melbourne, Victoria, Australia), M. Allen (University of Oxford, Oxford, United Kingdom), F. Otto (University of Oxford, Oxford, United Kingdom), S. Rosier, (NIWA, Wellington, New Zealand)
- 17:40 Human influence on climate in the 2014 Southern England winter floods and their impacts, N. Schaller (University of Oxford, Oxford, United Kingdom), A. Kay (CEH, Wallingford, United Kingdom), R. Lamb (JBA, Skipton, United Kingdom), N. Massey (University of Oxford, Oxford, United Kingdom), G. J. Van Oldenborgh (KMNI, De Bilt, Netherlands), F. Otto (University of Oxford, Oxford, United Kingdom), S. Sparrow (University of Oxford, Oxford, United Kingdom), R. Vautard (Laboratoire des Sciences du Climat et de l’Environnement, Saclay, France), P. Yiou (Laboratoire des Sciences du Climat et de l’Environnement, Saclay, France), A. Bowery (University of Oxford, Oxford, United Kingdom), S. Crooks (CEH, Wallingford, United Kingdom), C. Huntingford (CEH, Wallingford, United Kingdom), W. Ingram (University of Oxford, Oxford, United Kingdom), R. Jones (Met Office, Exeter, United Kingdom), T. Legg (Met Office, Exeter, United Kingdom), J. Miller (University of Oxford, Oxford, United Kingdom), D. Wallom (University of Oxford, Oxford, United Kingdom), A. Weisheimer (University of Oxford, Oxford,United Kingdom), P. Stott (UK Meteorological Office, Exeter, United Kingdom), M. Allen (University of Oxford, Oxford, United Kingdom)
Wed 08 July
1114 – Global emissions and their implications for climate targets, UPMC Jussieu – Amphi 24
- 17:30 Short Lived Promise? Short-lived climate pollutants, cumulative carbon and emission metrics, M. Allen (University of Oxford, Oxford, United Kingdom)
1119 (b) – Extreme hydrological events: deciphering changes in hazard and risk at different time-scales, UPMC Jussieu – ROOM 207
- 17:30 Attribution of Hydrological Extreme Events and the Need for National Inventories of Loss and Damage, M. Allen (University of Oxford, Oxford, United Kingdom)
2240 – Perceptions of climate change, UPMC Jussieu – ROOM 101
- 18:30 Panel discussion, N. Pidgeon (Cardiff University, Cardiff, United Kingdom), F. Otto (University of Oxford, Oxford, United Kingdom)
1118 (b) – Attribution of extreme events: How are High impact extreme events changing and why? UPMC Jussieu – ROOM 307
- 18:25 Attributing regional effects of the 2014 Jordanian drought to external climate drivers, R. Zaaboul, (ICBA, Dubai, United Arab Emirates), D. Mitchell (University of Oxford, Oxford, United Kingdom), K. Bergaoui, (ICBA, Dubai, United Arab Emirates), F. Otto (University of Oxford, Oxford,United Kingdom), R. Mcdonnell, (ICBA, Dubai, United Arab Emirates), S. Dadson, (University of Oxford, Oxford, United Kingdom), M. Allen (University of Oxford, Oxford, United Kingdom)
- 18:35 Distinguishing natural and anthropogenic influences on extreme fire danger in Australia, M. Black (University of Melbourne, Melbourne, Australia), D. Karoly (University of Melbourne, Melbourne, Australia), T. Lane, (University of Melbourne, Melbourne, Australia), L. Alexander (University of New South Wales, Sydney, Australia)
- NFS@Home: BOINC code upgrade
02.07.2015 00:12 Uhr
I’m working on transitioning the project’s per-app credits from my custom code to the official BOINC code. Various credit- and badge-related displays may be a bit broken for a bit. Sorry for any inconvenience!
Edit: I think everything should be working now. Please let me know if you find anything broken by leaving a comment on this post. Thanks!
- SAT@home: New peak of performance!
01.07.2015 09:24 Uhr
New peak of the project performance (10,16 TFLOPs) was obtained! Thanks to all our crunchers! Special thanks to the mega-crunchers Alejandro V. Mena, Endurance, Grandpa, damotbe and [SG-FC] hl. Also thanks to the top-5 teams (by RAC during the period where the peak was obtained): Crystal Dream, L’Alliance Francophone, Russia Team, MENA_COMP_DIE_FI_UNAM, [H]ard|OCP.
Был получен новый рекорд производительности (10,16 TFLOPs)! Спасибо всем нашим кранчерам! Персональное спасибо мега-кранчерам Alejandro V. Mena, Endurance, Grandpa, damotbe и [SG-FC] hl. Также спасибо топ-5 команд (по RAC в течение получения рекорда): Crystal Dream, L’Alliance Francophone, Russia Team, MENA_COMP_DIE_FI_UNAM, [H]ard|OCP.
- SAT@home: 5 new solutions
01.07.2015 09:10 Uhr
5 new solutions were found by hawker from Russia, Endurance from Crystal Dream, fzs600 from L’Alliance Francophone, jan, Grandpa from [H]ard|OCP, Ungelovende from Team Norway, Andrey Fesenko (anfes) from Russia, [AF>EDLS]zOU from L’Alliance Francophone
5 новых решений нашли: hawker из Russia, Endurance из Crystal Dream, fzs600 из L’Alliance Francophone, jan, Grandpa из [H]ard|OCP, Ungelovende из Team Norway, Andrey Fesenko (anfes) из Russia, [AF>EDLS]zOU из L’Alliance Francophone
- climateprediction.net: New Experiment Launched: weather@home 2015: Western US Drought
30.06.2015 08:54 Uhr
We’ve just launched a new experiment looking at the causes of the ongoing drought in California, Oregon and Washington.
Has climate change made the drought more likely? Or is it the “blob”, the giant patch of unusually warm water off the West Coast in the northeast Pacific Ocean?
We’ve just put out over 20,000 models to study this phenomenon – you can read more about the drought in the Western US and how our experiment will help answer these questions on the weather@home pages on our website:
We’ll be posting results up on our website as soon as we get the first models back, probably in about a week from now, so watch this space!
The drought in the Western US over the period covered by this experiment,
from US Drought Monitor.
- CAS@home: LHC@home Test4Theory passed 2 Trillion events
29.06.2015 08:31 Uhr
The Test4Theory application of LHC@home just announced that they have reached the total of 2 Trillion events simulated since 2011 by volunteers for the CERN PH-TH project MCPlots.
The original news can be found here
- GPUGRID: Update to QC CPU application
27.06.2015 12:30 Uhr
Hello Crunchers! Things have been a bit quiet on the GPUGRID development front for a while as we have concentrated on our scientific projects. I’m now doing a spot of work on our new CPU quantum chemistry application, with a view to significantly increasing its use in the near future. Expect a flurry of updates (the first, version 101, is live now) – these are aimed at improving the platform support and performance. Please note that this app is Linux only. It’s unlikely that we’ll be able to get a Windows version of this software built. Matt
- FiND@Home: server_status updated
26.06.2015 12:22 Uhr
Due to an XSS issues in server_status.php, I updated it.
PyAssimilator.py (vina) works well, do not mind the red warning.
I’m a little bit stupid, I forgot to backup my code for the progress bar… I’ll do it again but maybe not today.
- MilkyWay@Home: Nbody Status Update
25.06.2015 16:28 Uhr
Just a quick update on the status of Nbody. I discovered that the hanging that people were experiencing were due to the Newton Raphson root finding algorithm which would get stuck in an infinite loop. After looking for why this occurred for sometime, I decided to switch to a bisection method which is insured not to get stuck.
The slow nature of the initialization of the plummer was found to be an error in the calculation of one of the limits of integration in a crucial integral that was being calculated. What a time it was finding that! With that limit fixed, it seems that the initialization takes a few seconds!
I am currently unit testing the code and hopefully should get a lovely new version in a couple of weeks.
- MilkyWay@Home: Updates
25.06.2015 15:59 Uhr
Jake Weiss and I will be making fairly regular updates on the status of the project under the Application Code Discussion part of the forum.
- SETI@home: Questions and Answers
23.06.2015 21:51 Uhr
We put out a call on Twitter and Facebook for questions for our scientists and engineers. We picked seven of the submissions and had our team give short answers.
Follow us on Twitter: http://twitter.com/setiathome
- WEP-M+2 Project: 12-digit factor of P2203 has now been found by the project…
19.06.2015 10:52 Uhr
- GPUGRID: Urgent PhD position at GPUGRID in Barcelona (please forward)
18.06.2015 08:07 Uhr
hi guys, do you know anybody interested in doing a PhD with us. We have a fellowship but we need to find a candidate within a week. Please forward it on if you know somebody interested http://multiscalelab.org/Jobs/PhD_intrinsically_disordered_proteins_barcelona Best, gdf
- Collatz Conjecture: Planned Outage 6/18/2015 @ 8:00am CDT
18.06.2015 00:00 Uhr
Tomorrow morning at 8:00am central daylight savings time, the power will be out. It is expected to be back on around 12:00pm.
- Sixtrack: Brief Interruption, Thursday 18th June,2015
17.06.2015 16:22 Uhr
There will be a hopefully brief interruption to the service tomorrow
Thursday at 10:30 CST to provide separate NFS servers for SixTrack
and Atlas. The WWW pages should still be accessible and a further
message will be posted when the operation is complete. Eric and Nils.
- Collatz Conjecture: Planned Outage Today
16.06.2015 13:32 Uhr
The circuit breaker panel will be replaced today which will require all power to be shut off for an extended period today. Unfortunately, I have been given no specific start time or finish time. So, load up on your work units now.
- POEM@HOME: Intel GPU Support
16.06.2015 12:03 Uhr
We are currently running a version of POEM++ for Intel GPUs on our Test Server. We only have a very limited amount of machines for testing this, so it would be great to find some volunteers with Intel GPU hardware to connect to the Test Project.
To do so, use the “Add project” wizard of your BOINC client and paste the Project URL “http://int-boinctest.int.kit.edu/poem/” into the corresponding text field, as our test server is not listed as an official BOINC project. We appreciate every help for testing, but please keep the following in mind:
- Test server results will not be used for scientific publications.
- Credits will not be listed in the BOINC cross-project statistics.
- Test server applications may crash your system, so be sure to save any valuable data beforehand.
Best practice is to return a few tasks, and immediately detach from the POEM@TEST project.
Thanks in advance,
- World Community Grid News: In 10 years, 'crowdsourced computing' has changed the world; now it's tackling Ebola
15.06.2015 19:12 Uhr
An article on TheIndependent.com detailing the past 10 successful years of World Community Grid.
- Rosetta@home: Project News Jun 15, 2015
15.06.2015 07:00 Uhr
The minirosetta application has been updated to 3.59. To report bugs, go to this thread.
- SETI@home: Eric Korpela on UFOs and Conspiracy Theories
12.06.2015 18:20 Uhr
Berkeley SETI Research Center Project Scientist Eric Korpela talks about giant red aliens, sky queens, and what we’ll do when we make contact. Check out our latest video profile at https://youtu.be/skhDicuJCwk
- Sixtrack: Project down due to a server issue
11.06.2015 09:42 Uhr
Due to a problem with an NFS server backend at CERN, the Sixtrack and ATLAS BOINC projects are down. A fix is underway.
- Collatz Conjecture: Sieve Application Testing
11.06.2015 00:18 Uhr
As some may have noticed on the server status page, there are daemons running for the new Collatz Sieve application. Work units are available for when the apps ready for testing. If you are a glutton for punishment, set your preferences to allow test applications and when the apps are ready, you can join in the testing. I know the credit calulation used by the old apps has to change because while the average steps has increased because of the sieve, the total steps has decreased. Also, the WUs are probably too large (a day or two or more??? on a very fast GPU). The sieve apps will come and go while testing the various platforms and plan classes. As they are determined to be stable they will be added to the list of production apps and, if all goes well, eventually the v6 apps will be deprecated.
- yoyo@home: Muon update
10.06.2015 22:00 Uhr
Check the forum entry from the author for an update of the project. I’ll keep the project running with a lower weight.
- Collatz Conjecture: She Needs More Power, Capt'n
10.06.2015 17:09 Uhr
After replacing the power supply, the Collatz server is back online. The database checked out OK so everything appears normal. As usual, if you find any quirks, please let me know.
- RALPH@home: Project News June 10, 2015
10.06.2015 07:00 Uhr
The minirosetta_beta application has been updated to version 3.59. Please post bugs/issues in the 3.56 thread. This update fixes a corrupted Mac application.