41) Message boards : Cafe SETI : It's Angela's birthday! (Message 1995046) Posted 24 May 2019 by Eric Korpela Post: And she's only slightly older than SETI@home. (good cake)

42) Message boards : News : 20 years and counting! (Message 1994115) Posted 18 May 2019 by Eric Korpela Post: The screen saver is still there. But since nobody uses CRT display any more, the operating systems don't really prioritize keeping screen savers functioning. And as operating systems have gotten more security conscious they don't seems to want to put in the effort to support 3rd party screen savers that they fear may do dangerous things. I find that on my home Windows 10 box, the screen saver works about half the time. The next update may break it entirely. On Macintosh, we made an update a while back that was supposed to fix the screen saver. I've heard from some people that it does, and others that it doesn't. If you use the BOINC Manager, the "show graphics" menu item (or button in the advanced view) still seems to work if you are jonesing for graphics.

43) Message boards : News : 20 years and counting! (Message 1994043) Posted 17 May 2019 by Eric Korpela Post: Happy Anniversary! On this date in 1999, SETI@home came online. Since then millions of our volunteers have helped us sift through petabytes of data from multiple radio telescopes. ET still hasn't shown up to the party. We're not discouraged. We're able to examine less than a tenth of a percent of the radio spectrum, over only 1/3 of the sky and a limited number of additional stars. But our capabilities are increasing every day. In 1999 it took up to a week to process a single workunit on a home PC. Now, on a machine with a GPU, it might only take a few minutes to do a far more detailed and more sensitive analysis. Who knows what the next 20 years will bring?

44) Message boards : News : SETI Perspectives article "Coming of Age for Optical SETI" (Message 1993347) Posted 10 May 2019 by Eric Korpela Post: Richard Lawn has written a new article, this one on the Panoramic Optical SETI effort, PANOSETI. As a bonus he includes a bit of an update on 'Oumuamua.

45) Message boards : News : The Drake Equation Revisited (Message 1988771) Posted 4 Apr 2019 by Eric Korpela Post: Richard Lawn has given us a new SETI Perspectives article to think about. This one is about the Drake Equation.

46) Message boards : News : Another crash (Message 1988485) Posted 3 Apr 2019 by Eric Korpela Post: This time the primary database machine crashed and hasn't automatically recovered. We've fallen back to the replica machine, and the only symptom should be a few extra hours of outage. I'm glad we have the replica.

47) Message boards : Number crunching : Panic Mode On (115) Server Problems? (Message 1987462) Posted 27 Mar 2019 by Eric Korpela Post: We slowly climbing out of the ditch, but we still don't have a cause. It started suddenly at 7am Monday, so we're guessing that there was a change in hardware/software/DNS or routing at that point. We've got a trouble ticket in with campus networking and they are looking into it. (My workaround was just to not let connection attempts sit in the local queues for long periods of time. Quick drops are often much better than those that hang around and prevent other connections. That seems to have fixed the log jam, but there may still be people who can't connect.)

48) Message boards : News : New SETI Perspectives article (Message 1984816) Posted 12 Mar 2019 by Eric Korpela Post: Richard M Lawn has posted another interesting article to the SETI Perspectives forum. This one is about the mysteries of Fast Radio Burst (aka FRBs), possibly some of the most distant explosions ever seen.

49) Message boards : News : We're back up. (Message 1983711) Posted 7 Mar 2019 by Eric Korpela Post: Hopefully there won't be any further problem. Our attempt to upgrade the memory on Oscar (the BOINC database machine) and Carolyn (the replica database) took a bit of DIMM swapping to find pairs of DIMMs that worked. Carolyn is still short two DIMMs (32 GB), but we didn't want to extend the outage any further to try to get it up to the full 192 GB. We might try to max out Carolyn during the outage next week. [edit]And as is usual after a long outage, we've got a large number of hosts out there starving for work. It'll take a little while before "no work" messages start to get less frequent.[/edit]

50) Message boards : News : Download server glitch (Message 1983293) Posted 4 Mar 2019 by Eric Korpela Post: The servers always seem to know when I'm going to be away. :( I think I found and fixed the remaining problem.

51) Message boards : News : Download server glitch (Message 1982953) Posted 1 Mar 2019 by Eric Korpela Post: We had a problem with one of our download servers that was slowing down downloads and slowing down work generation. We've fixed the problem, but there are lots of people out there trying to download. It'll probably be a while before our downloads aren't swamped with requests. Work ready to send has started trending back up, so we shouldn't end up with a work shortage.

52) Message boards : News : New forum, and a new contributor. (Message 1981932) Posted 23 Feb 2019 by Eric Korpela Post: We have added a new forum called SETI Perspectives that will showcase thoughts on SETI and related topics from people not directly connected with the Berkeley SETI group. Richard Lawn, Ph.D is our first contributor with an article about 'Oumuamua, the first object we've seen that convincingly originates from outside from outside the solar system. We hope have a long collaboration with Richard. Please welcome him into the SETI@home family.

53) Message boards : News : Setizen Gordon Lowe has passed away (Message 1981517) Posted 21 Feb 2019 by Eric Korpela Post: I'm sad to report that we've lost another long time SETI@home volunteer and moderator Gordon MacKenzie Lowe. A remembrance thread has been started here. Gordon will be greatly missed.

54) Message boards : News : BOINC Open Source Project looking for experienced MacOS developers (Message 1981331) Posted 20 Feb 2019 by Eric Korpela Post: The Berkeley Open Infrastructure for Network Computing (BOINC) system is the software infrastructure used by Einstein@Home and many other volunteer distributed computing projects. The BOINC Open Source Project is looking for volunteers to develop and maintain the BOINC client on macOS. The BOINC Client and Manager are C++ cross-platform code supporting Microsoft Windows, macOS, Linux, and several other operating systems. We currently have a number of volunteer developers supporting Windows and Linux, but our main macOS developer is winding down his involvement after many years. He is prepared to help a few new macOS developers get up to speed. If you have macOS development experience and are interested in volunteering time to help support and maintain the BOINC macOS client please have a look at the more detailed description here: https://boinc.berkeley.edu/trac/wiki/MacDeveloper If you want to help, please sign up to the BOINC Developer email list here: ​https://groups.google.com/a/ssl.berkeley.edu/forum/#!forum/boinc_dev. If you are not a macOS developer, but have other skills and are interested in contributing to BOINC, the link above also has more general information. Thank you!

55) Message boards : News : Storage machine crash.... (Message 1980557) Posted 15 Feb 2019 by Eric Korpela Post: We're working on a couple of large papers right now. We'll certainly post them when we're done.

56) Message boards : News : Storage machine crash.... (Message 1980347) Posted 14 Feb 2019 by Eric Korpela Post: 3rd consecutive day of no boinc stats update Not sure why that would be. Our stats files are in place and have current timestamps. https://setiathome.berkeley.edu/stats/

57) Message boards : News : Storage machine crash.... (Message 1980206) Posted 14 Feb 2019 by Eric Korpela Post: Sorry for the late notice. The problems we had bloated the result table to about double its normal size. Hopefully it will be back down to normal next week.

58) Message boards : News : Storage machine crash.... (Message 1979678) Posted 10 Feb 2019 by Eric Korpela Post: The system eventually came back up and we're getting the missing workunits back online as quickly as we can. There will still be some download errors as things will be out of synchronization for a while. Some workunits that exist in the database may not have been flushed to disk before the system went down (although in theory our disk controllers shouldn't allow that to happen).

59) Message boards : News : Storage machine crash.... (Message 1979420) Posted 8 Feb 2019 by Eric Korpela Post: A machine that was holding 15% of our outgoing workunits has crashed and refuses to start back up. Short term it means that attempts to access those workunits will cause an error until the workunit is marked as bad. Sorry for the incovenience.

60) Message boards : News : Slow server for the next 8 hours or so... (Message 1978208) Posted 2 Feb 2019 by Eric Korpela Post: Definitely climate controlled. We have several rack in the UC Data Center. The workunit storage array is an external SuperMicro SAS box attached to georgem. We try to keep our arrays to a single manufacturer. The georgem arrays are Seagate, a combination of ST2000DM001 and ST2000DM009. For older Hitachi/HGST arrays it's getting difficult to find drives with 512 byte sectors, so those arrays will probably to mixed manufacturer at some point. For kicks I looked at the age of files in the workunit storage (based upon a sample of 0.1%). As you can see, half our files get deleted within a couple days, but some hang out for up to 60.

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