- climateprediction.net: Explaining Extreme Weather Events of 2013 from a Climate Perspective
29.09.2014 15:28 Uhr
The annual Bulletin of the American Meteorological Society (BAMS) special issue on the attribution of last year’s extreme weather events is published today. This year’s issue “explaining extreme events of 2013 – from a climate perspective” includes two papers led by researchers from our climateprediction.net team.
This is a highly-cited and influential annual publication coined in 2012 asking whether and to what extent anthropogenic climate change altered the risk of major extreme weather events of the past year to occur.
The first of these papers, led by Dr Nathalie Schaller, looked at the heavy rainfall last summer in the Upper Danube and Elbe Basins in central Germany.
Nathalie explains her research: “Using the weather@home project, we performed two types of experiments to investigate the effect of human influence on the heavy precipitation event that occurred in May-June 2013 in Central Europe and led to floods along the Elbe and Danube rivers. Comparing extreme rainfall amounts in the Elbe and Danube catchments in simulations of the ‘world as it happened’ and of the ‘world that might have been’ shows that human influence did not affect the risk of such an event happening.
An attribution study that was based only on observations came to the same conclusion. This paper shows that despite the fact that in a warming world we do expect and observe more extreme precipitation on average, this is not true for all regions and all types of events.”
The second paper, by Dr Juan Añel Cabanelas and colleagues, looked at the extreme snow in the western Spanish Pyrenees during the winter and spring of 2013.
Juan explains his research: “We analyzed a phenomenon of extreme snow accumulation in the Pyrenees for several months of 2013 using different techniques. The phenomenon was extreme and rare. However results from weather@Home simulations were not able to find a conclusive fingerprint of climate change on it. If anything, the results suggest a slight decrease of the likelihood of such an accumulation of snow occurring in a warming world but this decrease is not scientifically significant.”
The special issue comprises of 22 studies of 16 events that occurred in 2013 all over the world. A particular focus of 5 studies was the extreme heat in Australia, which forced the local meteorological services to design a new colour for the weather maps to display unprecedented heat. All found a strong increase in the risk of such record-breaking heat waves occurring in a warming world, with Knutson et al. showing that the annual mean temperatures in Australia in 2013 are impossible to simulate without global warming.
The studies of extreme precipitation and cyclones show that our understanding of how the probability of their occurrence changes in a warming world is less complete, however, as the report concludes, a “failure to find anthropogenic signals for several events examined in this report does not prove anthropogenic climate change had no role to play. Rather, an anthropogenic contribution to these events that is distinguishable from natural climate variability could not be detected by these analyses. Thus, there may have been an anthropogenic role, but these particular analyses did not find one.”
In compiling different methods to answer the same research question and highlighting the strengths and weaknesses in these methods and gaps in our understanding these annual reports add considerably to the body of evidence of climate change.
- SAT@home: Six a5_1_114_* instances were solved
29.09.2014 14:12 Uhr
Instance a5_1_114_5 solved by toest from TSC! Russia, Winer from BOINC RUSSIA
Instance a5_1_114_6 solved by Lavoler from Russia Team, ChertseyAl
Instance a5_1_114_7 solved by Crystal Spirit from Crystal dream, mi5rys from Crystal Dream
Instance a5_1_114_8 solved by morgan from Team Norway, Igo Centrical from Russia Team
Instance a5_1_114_9 solved by Shurale from Astronomy.Ru forum, Shaman from Czech National Team
Instance a5_1_114_10 solved by Grey from Russia, Mixa from Russia Team, Владимир from TSC! Russia, plumbum from Russia Team.
- GPUGRID: New CUDA65 beta app
29.09.2014 09:49 Uhr
Dear all, please give the new acemdbeta app, ver 845, a work out. This supports all GPUs now. It’s Windows only – if you don’t get WUs, you’ll need to update your driver. Matt
- GPUGRID: Changes to scheduling policy
29.09.2014 08:09 Uhr
Hi all, In attempt to rationalise the rules for assigning WUS to crunchers, I’ve made some changes to the underlying scheduler program. Here are the new rules: * If you have driver >= 343.00 and sm >= 2.0 you will get a CUDA 6.5 * If you have driver >= 334.21 and < 343.00 and sm >= 2.0 you will get a CUDA 6.0 * If you have driver >= 295.30 and< 334.21 and sm >= 2.0 and < 5.0, you'll get a CUDA 4.2 * If you have driver >= 295.30 and sm == 1.3 you’ll only get CUDA 4.2 Matt
- Wildlife@Home: [dna] updated linux 64 bit to 0.47
28.09.2014 22:01 Uhr
Removed some of the static linking, hoping this version will work. Let me know how it’s crunching.
- Wildlife@Home: [dna] updated linux 64 bit to version 0.46
28.09.2014 19:18 Uhr
Looks like 0.45 got added to the server incorrectly (due to my trying to hack the update versions script). I’ve re-added it with the fixed update_versions script from BOINC so hopefully it will download successfully now.
- Wildlife@Home: [dna] added badges for DNA@Home
28.09.2014 19:05 Uhr
I’ve added a set of badges for DNA@Home, you can check them out at the Badges webpage, and they should be showing up in the forums as well. Badges for DNA@home and Wildlife@Home are being exported to: http://volunteer.cs.und.edu/csg/download/badges.xml if any stats sites want to track them.
- Wildlife@Home: per-app top lists
28.09.2014 17:43 Uhr
I’ve added per-app top lists for the sub projects. Unfortunately given the way things are in the database it’s a little tricky to add per-sub project top lists, but I’ve got that on the to do list. But anyways, if you go to Top Lists in the navbar, you can check out the per-app top lists for the three sub projects.
- Wildlife@Home: [dna] updated linux 64 bit application
28.09.2014 16:22 Uhr
I’ve updated the 64 bit linux application to 0.45, libgcc should be linked statically now, which I believe should fix the errors people have been seeing. Let me know if it’s working.
- Wildlife@Home: [dna] credit loss fixed
28.09.2014 15:56 Uhr
Conan had noted that his DNA@Home credit had dropped a bit when I made the swap over to BOINC’s new per-app credit system. Turns out I had put the credit from the old DNA@Home database into the new system, as opposed to the credit from the old DNA@Home database + new DNA@Home credit gained here on CSG. This should be fixed now.
- Wildlife@Home: stats export now working with BOINC per-app credit
27.09.2014 22:07 Uhr
Hit a couple snags, but I think everything is working now. CSG should be exporting statistics using BOINC’s new per-app credit. Credit from DNA@Home and SubsetSum@Home from linked accounts should be added to the per-app credit for export. Linking should still work (and will update per-app credit in the new system). Let me know if you’re having any problems!
- Wildlife@Home: please check your teams
27.09.2014 21:41 Uhr
I had a minor issue upgrading things to use the new credit system, and some of your teams might have been un-set. I think this only will happen to users with no credit on any project. I’ve put in a request to get a backup of this information from the database, but for the time being you might want to double check that you have joined the right team — as I probably won’t get it until monday. Very very sorry about this!
- Wildlife@Home: disregard previous stats export message
27.09.2014 20:41 Uhr
I’m updating things to use the new boinc per-app credit system. Should have it done soon-ish.
- Wildlife@Home: [dna] updated applications
27.09.2014 20:14 Uhr
I noticed something was going wrong with the DNA@Home applications where they were not using the input file correctly to determine their starting values. I’ve upgraded all the applications to 0.44 to fix this.
This might cause some work units calculated with application versions 0.42 or 0.43 to not validate against 0.44 applications, so feel free to cancel any tasks running on version 0.42 and 0.43.
While I was at it, I also updated the 64 bit linux application with a statically compiled (and somewhat optimized) version of BOINC. So this should hopefully speed it’s performance up a bit (as some users were noticing the 32 bit linux app was faster than the 64 bit app).
Let me know if you are having any issues with the new binaries!
- Wildlife@Home: CSG now exporting stats
27.09.2014 19:02 Uhr
Looks like I have the updated stats export working.
the user, team and host files now contain additional XML for the per-project credit.
< name>Travis Desell< / name> < country>United States< / country> < create_time>1326744021< / create_time> < total_credit>1008951.056735< / total_credit> < expavg_credit>103.127181< / expavg_credit> < expavg_time>1411308097.997700< / expavg_time> < dna_total_credit>279427.000000< / dna_total_credit> < dna_expavg_credit>103.000000< / dna_expavg_credit> < dna_expavg_time>1411308097.000000< / dna_expavg_time> < sss_total_credit>343868.000000< / sss_total_credit> < sss_expavg_credit>0.000000< / sss_expavg_credit> < sss_expavg_time>1372797001.000000< / ss_expavg_time> < wildlife_total_credit>385655.000000< / wildlife_total_credit> < wildlife_expavg_credit>25.000000< / wildlife_expavg_credit> < wildlife_expavg_time>1407964455.000000< / wildlife_expavg_time>
(note the spaces in the XML are only so they show up in the forum post).
The total_credit, expavg_credit, expavg_time are the combined stats for all the sub projects. Each subproject has it’s own set of xml for total_credit, expavg_credit and expavg_time.
The xml is the same for users, hosts and teams. Hope this works — let me know if there are any issues importing this, or if any changes need to be made.
- MilkyWay@Home: New Nbody version
24.09.2014 18:00 Uhr
I put out a new version of Nbody, version 1.44. This should fix some library issues people were having. If any issues arise, let me know.
- Wildlife@Home: account linking
24.09.2014 17:03 Uhr
Account linking should be working again. If you want to link your Citizen Science Grid account to your old DNA@Home or SubsetSum@Home account, please visit the Link Accounts webpage. Let me know if you have any issues.
- MilkyWay@Home: back up and running
23.09.2014 20:34 Uhr
Looks like everything is back up and running. Let me know if there are any issues!
- MilkyWay@Home: Updating BOINC server code
23.09.2014 19:51 Uhr
Some updates were made to the applications which broke our feeder. We need to update and recompile the BOINC server code, and I’m working on this right now. I hope to have things fixed by the end of the night. Sorry for everything being broken!
- MilkyWay@Home: New Version of Separation Modfit 1.34
22.09.2014 20:04 Uhr
I just released a new version of separation today that is compiled against older glibc versions. The actual version number is 2.11 for glibc. This is the oldest that Ubuntu currently has on an active LTS. Users who experience errors due to the fact that their glibc versions are older than this should send me a message and I will give them instructions on how to compile the program for their own machines using their version of glibc. Otherwise, I changed the plan class we are using for our GPU versions to enforce a minimum OpenCL version. This will keep CAL cards from getting GPU work units from the server and reduce error rates and thus validation issues.
Sorry for the wall of text but essentially we have an older glibc and a new method for sending out GPU work units.
If there are any issues with this release please post them here and I will try to get back to you quickly.
Thank you all for your continued support,
- Wildlife@Home: more travel
22.09.2014 17:46 Uhr
I’m traveling to Baltimore for yet another conference, and will be back thursday. If I’m slow in responding this week, that’s why! I will be checking in periodically to make sure things are running smoothly (and hopefully no spammers attack).
- Wildlife@Home: [dna] lots of new work units
21.09.2014 14:56 Uhr
As it looks like things are progressing rather smoothly with the new binaries, I’ve stated up a larger batch of work units to really start doing some analysis on the human genome data from regions related to the SNAIL and SLUG transcription factors. We’re really excited to see what comes out of this!
- Wildlife@Home: [dna] added 32 bit linux binary
21.09.2014 14:53 Uhr
Let me know how it’s working!
- Wildlife@Home: [dna] assimilator back up and going
20.09.2014 23:13 Uhr
Assimilator is working with the new binary changes as well now, and should be generating more work units as it assimilates things. Let me know if you run across any problems.
I’m still working on getting a 32 bit binary for linux compiled (been fiddling around getting a virtual machine working). Hopefully have it by the end of the day or tomorrow.
- Wildlife@Home: [dna] validator up and going
20.09.2014 20:43 Uhr
Got the validator back up and running given the new binaries. The first few work units have been validated. Looks like around 30 credit a work unit for these longer batches. Let me know if there are any issues. On to updating the assimilator.
- Wildlife@Home: [dna] new 32 and 64 bit windows binaries
20.09.2014 19:57 Uhr
Let me know how these are doing. Think I found the error.
edit: i’ve generated another batch of work units to test these with.
- Wildlife@Home: [dna] added 32 and 64 bit windows binaries
20.09.2014 16:10 Uhr
Going to add another set of work units, let me know how the new binaries work.
- Wildlife@Home: [dna] added a linux 64 bit binary
20.09.2014 15:18 Uhr
Let me know how it’s working.
- Wildlife@Home: [dna] testing new binaries
20.09.2014 14:58 Uhr
I’ve updated the OSX binaries (and deprecated the rest) to check my updates and make sure that they’ll correctly validate and grant credit. Will be compiling linux binaries next. After they’re verified I’ll get on to the rather painful task of compiling them in windows. Test work units will be trickling out as I work on these.
- Wildlife@Home: well that was a mess
20.09.2014 13:23 Uhr
Looks like all the spam is cleaned up now. I’ve set things so that if a user wants to post in our forums, they either need to have some credit, or to have gone to the wildlife video selection page and clicked on one of the watch video buttons (you won’t have to actually watch one, you just need to visit the page). I’m hoping this is unique enough to confuse whatever spam script bots are out there. It also should be very easy, just two clicks so hopefully it won’t keep anyone from posting whose having issues crunching work units or doing anything on wildlife@home. Let me know if you have any issues!