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Planned Server Maintenance
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!
killing extremely long SixTrack tasks
we had to kill ~10k WUs named:
due to a mismatch between the requested disk space and that actually necessary to the job.
These tasks would anyway be killed by the BOINC manager at a certain point with an EXIT_DISK_LIMIT_EXCEEDED message - please see:
for further info.
These tasks cover 10^7 LHC turns, a factor 10 larger than usual, with files building up in dimension until the limit is hit.
The killing does not involve all tasks with such names - I have killed only those that should cover the stable part of the beam; these tasks are expected to last long and hence reach the limit in disk usage. The other WUs should see enough beam losses that the limit is not reached - please post in this thread if this is not the case. The cherry-picking killing was done in the effort of preserving as much as possible tasks already being crunched or pending validation.
As soon as you update the LHC@project on your BOINC manager you should see the task being killed.
We will resubmit soon the same tasks, with appropriate disk requirements.
Apologies for the disturbance, and thanks for your understanding.
Subfield 5 almost complete
As you may have noticed, subfield 5 is nearing completion. In the next few hours the last of the work units will be sent out. Of course it will still take ~2weeks for the final results to trickle in before it's officially complete.
This is a huge milestone! This subfield was originally estimated to take over a year to complete. Due to the new optimized apps (including GPU apps), this was completed in just several months.
We will be moving on to subfield 4. But first we will make a short detour and finish off subfield 6 DS7. Don't let the ~2.5mil work units scare you. These were generated for the old apps, and would have taken about 2 hours a pop, but with the newer apps they should be about 10x faster. That means we should blow through about 350k work units per day. If this turns out to be too much of a strain on the server, then we will jump straight to subfield 4 (and run sf6 DS7 in parallel).
Thanks everyone for your contributions! We couldn't have done this without our volunteers.
Using a local proxy to reduce network traffic for CMS
Thanks to computezrmle, with additional work from Laurence and a couple of CMS experts (and my adding one line to the site-local-config file) there is now a way to set up a local caching proxy to greatly reduce your network traffic. Each job instance that runs within s CMS BOINC task must retrieve a lot of set-up data from our database. This data doesn't change very often, so if you keep a local copy the job can access that rather than going over the network every time.
Instructions on how to do this are available at [Link] https://lhcathomedev.cern.ch/lhcathome-dev/forum_thread.phpp?id=475&postid=6396 or [Link] https://lhcathome.cern.ch/lhcathome/forum_thread.php?id=5052&postid=39072
Citizen scientists use Foldit to successfully design synthetic proteins
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 [Link] 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://doi.org/10.1038/s41586-019-1274-4 [Link] PDF
NewER runs for Milkyway_nbody
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.
New runs for Milkyway_nbody
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.
new exes for SixTrack 5.02.05
we are pleased to announce the release to production (SixTrack app) of new exes for the current pro version (v5.02.05). We have new exes for FreeBSD (avx/sse2), an exe for XP hosts (32bits), an aarch64 executable for Linux, and one for Android. Many thanks to James, Kyrre and Veronica for finding the time to produce them.
Distributing an exe compatible with XP hosts is not a way to encourage people to stay with unsupported OSs, but rather a trial to have a smooth transition to more recent OSs. In this way, people with XP hosts do not miss the possibility to contribute to the present wave of SixTrack tasks (expected to be quite long) while considering options for upgrading their hosts. At the same time, we are looking into preparing 32bits Linux exes. It should be noted that all Win exes are distributed without targeting specific kernel versions - hence, XP hosts may receive tasks with regular Windows exes immediately failing, but the BOINC server should quickly learn that the XP-compatible exe is the appropriate one.
We are also very happy to start involving freeBSD and Android users in our production chain. For the latter platform, the present exe won't run on Android versions >=8 - James is still looking into this. Since the android version filtering needs a fix on the scheduler side:
we labelled the Android exe as beta. Hence, Sixtrack beta users with Android 8 and later should not request tasks for that host or untick the tes...
New Separation Runs
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!
base R951 proven / Megaprime
On 04th of May, whizbang, a member of the team Ars Technica found the last prime for base R951.
The prime 38*875^256892-1 has 1.107.391 digits and entered the TOP5000 in Chris Caldwell's The Largest Known Primes Database.