Milkyway@Home uses the BOINC platform to harness volunteered computing resources, creating a highly accurate three dimensional model of the Milky Way galaxy using data gathered by the Sloan Digital Sky Survey. This project enables research in both astroinformatics and computer science.
In computer science, the project is investigating different optimization methods which are resilient to the fault-prone, heterogeneous and asynchronous nature of Internet computing; such as evolutionary and genetic algorithms, as well as asynchronous newton methods. While in astroinformatics, Milkyway@Home is generating highly accurate three dimensional models of the Sagittarius stream, which provides knowledge about how the Milky Way galaxy was formed and how tidal tails are created when galaxies merge.
Milkyway@Home is a joint effort between Rensselaer Polytechnic Institute's departments of Computer Science and Physics, Applied Physics and Astronomy. Feel free to contact us via our forums, or email astro[at]cs.lists.rpi[dot]edu.
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Milkway@home is funded through a grant from the National Science Foundation (NSF). Any opinions, findings, and conclusions or recommendtions expressed in this material are those of the author(s) and do not necessarily reflect the views of the NSF.
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Nbody WU Flush
I'm going to turn the project off for a little while to cancel a bunch of WUs. There's no easy way to cancel only Nbody WUs (unless I want to sit and cancel them 999 at a time, because of how BOINC servers are set up), so I'm just going to cancel ~75% of the currently available jobs. This will reduce the enormous Nbody backlog and hopefully get things flowing more smoothly.
14 Apr 2022, 18:04:27 UTC · Discuss
Server Downtime March 28, 2022 (12 hours starting 00:00 UTC)
I will be turning off the mysql DB for the server at midnight UTC (8PM EDT) for 12 hours. Last time I kept some processes running, but turned off the WU generators in order to give things time to catch up from the drive failure (they are currently still off). I don't think that the server finished rebuilding then, so I will be turning all MW processes completely off for 12 hours, and then hopefully by the time I turn things back on again, the drive will have rebuilt.
If you only tune in to the BOINC notices, apologies for the massive drops in RAC lately. These are related to a hard drive failure that we are still in the process of recovering from.
Thanks for your patience. I know that this has been very frustrating for all of you, and it has been frustrating for me as well.
27 Mar 2022, 19:35:05 UTC · Discuss
Server Downtime March 25, 2022 (24 hours starting 17:00 UTC)
I'm going to be turning the project off for roughly 24 hours starting at 1 PM EST (17:00 UTC) on March 25th. This time will do three things: 1) It will allow me to clear the transitioner backlog, 2) It will temporarily stop generating new WUs, so we can work on the backlog of WUs waiting for validation, and 3) It will help the server rebuild the replacement drive that we put into the machine on Monday.
There will probably be at least 12 hours of downtime during this where you will not be able to contact the upload or download servers.
23 Mar 2022, 21:31:59 UTC · Discuss
Server Downtime 3/21 1PM EST
We will be taking the server down at 1PM NY time to do a reboot and ensure that the replacement drive is rebuilding correctly. We plan on being out for a couple hours at most.
21 Mar 2022, 15:40:07 UTC · Discuss
The server appears to be having some connectivity issues. Additionally, one of the drives on the server appears to have failed - luckily things are mirrored so we haven't lost any data. However, I need to make a backup of things, which could take several hours. Once everything is backed up I'll try to clear out this transitioner/validator backlog and get things up to speed again.
21 Feb 2022, 19:44:42 UTC · Discuss
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