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End of April Report (Apr 29 2010)
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Matt Lebofsky Send message Joined: 1 Mar 99 Posts: 1444 Credit: 957,058 RAC: 0 |
Okay it's been a while and nobody else is chiming in so here are some general random updates. Sorry these are so few and far between. Not my fault. We did successfully, finally, split the informix databases up. Instead of both redundantly housing SETI@home and Astropulse, one is specifically running SETI@home, and the other Astropulse. We lost our redundancy, but we back these systems up weekly and in a pinch can always regenerate lost data by splitting it again and sending it out to y'all. What we gained was a massive amount of i/o. Actually more like the Astropulse i/o isn't clobbering normal SETI@home day-to-day operations anymore. Like all things, this procedure took far longer than expected - mostly due to one of the SETI@home tables being strangely hard to drop off the one server that no longer needed it - something about a user-defined type in that table causing informix to crash when the deletes were done en masse. There are still the usual set of other systems projects or problems waiting for our time and attention. Our master mysql server, mork, has been stable but may reboot itself unexpected at any point. Luckily when this happens recovery has been short and painless. We'd replace this system, but need another system with similar drive space and cpus and 64GB RAM which we don't have. Even worse is our main file server (which, among other things, houses our web site and home accounts) is slow and also prone to unwarranted random crashes. Some systems still need an OS upgrade. I also want to rebuild the RAID on thumper... In brighter news, the gigabit link project got a kick in the right direction. Short story: turns out the whole lab wants a gbit connection to campus and suddenly has some discretionary funds for this. So we might partially piggy-back on that bandwidth. Anyway, the increased-bandwidth patient still has a pulse. Of course, we haven't really our own 100Mbit ceiling too much lately, so this is hardly an emergency at the moment. Also... our data drive bay down at Arecibo was broken. We finally shipped them our bay working here at Berkeley just so they could continue to collect data, but that meant we could read new disks, only process data already on disk (or in our archives, i.e. old stuff that had yet to be properly processed). Anyway, we got the broken bay sent up here last week and Jeff found it was just a bent pin in the cable that connects to the power supply, so we have two functioning bays again in the two separate locations, and are reading newer data off drives for the first time in a while. Other than that (and the usual set of minor tweaks and crashes that require a few minutes here and there) we've been running fairly well in a steady state. Dan continues to mostly work on CASPER stuff. Dave is working entirely on BOINC development. Jeff and Bob are manning the general data pipeline. Jeff and Eric are working on NTPCkr stuff - mostly RFI analysis/excision and candidate rescoring. While I seem to be part of all projects around here (like everybody) I've been forcing myself away from systems stuff except as needed - another reason why I've had little motivation to write tech news reports. I've been mostly working on data quality stuff - one program that injects fake signals into raw data to test various parts of our blanking/analysis suite, and a bunch of other programs to test basic data integrity. Stuff that should have been done years ago, but better late than never. In short, the results are pretty much all good, but there are several database corrections of varying magnitude which need to be carried about before we can truly reduce the data even more. Stuff like pointing corrections, or general rescoring. The basic game plan, as it has been, is to rally behind the NTPCkr suite once the RFI/scoring stuff is working and the science database can handle the full analysis load in earnest. If you're frustrated by lack of advancement on this front, maybe it'll help to think of all the previous NTPCkr pieces made public part of a "proof of concept beta test." We do hope to have this rolling, complete with volunteer analysis and input, sooner than later. It's funny the SETI institute is working on their own volunteer analysis project. Basically just another thing that gets the public confused about who actually manages SETI@home. Anyway, you know how little labor resources we have, so we do what we can. By the way, that NASA balloon project that crashed and burned this morning involved the great efforts by several of our lab mates here at Berkeley. Many years of planning/production lost in an instant. Total bummer. - Matt -- BOINC/SETI@home network/web/science/development person -- "Any idiot can have a good idea. What is hard is to do it." - Jeanne-Claude |
perryjay Send message Joined: 20 Aug 02 Posts: 3377 Credit: 20,676,751 RAC: 0 |
Hi Matt, Great to see you back and posting even if it is only a one off until someone else gets conned.....uhh, volunteers to keep us informed. Just a note, one of the servers are having download problems again, I think it's Vader but I'm not sure. I guess the right person already knows that but worth a mention. PROUD MEMBER OF Team Starfire World BOINC |
Gary Charpentier Send message Joined: 25 Dec 00 Posts: 31012 Credit: 53,134,872 RAC: 32 |
Thanks for ANY update. Too bad about the balloon going up and the payload going down. Who didn't put in the cotter pin? |
Dirk Sadowski Send message Joined: 6 Apr 07 Posts: 7105 Credit: 147,663,825 RAC: 5 |
Matt, thanks for update! Just a note.. DL server 'http://208.68.240.18' is online. DL server 'http://208.68.240.13' is since a few days not available. ____________ [Optimized project applications, for to increase your PC performance (double RAC)!][Overview of abbreviations, which are used often in forum and their meaning.] |
Matt Lebofsky Send message Joined: 1 Mar 99 Posts: 1444 Credit: 957,058 RAC: 0 |
Try the download servers again... I think I just fixed it. - Matt -- BOINC/SETI@home network/web/science/development person -- "Any idiot can have a good idea. What is hard is to do it." - Jeanne-Claude |
Dirk Sadowski Send message Joined: 6 Apr 07 Posts: 7105 Credit: 147,663,825 RAC: 5 |
Many thanks! The last few days we could read a lot of messages because of not possible DL. ____________ [Optimized project applications, for to increase your PC performance (double RAC)!][Overview of abbreviations, which are used often in forum and their meaning.] |
ront Send message Joined: 25 Aug 01 Posts: 77 Credit: 386,336 RAC: 0 |
Hello Matt. Welcome back. You were sorely missed. Eric did an admirable job in your absence. Thanks for the detailed update. I am certain we will see its effect shortly. I do look forward to that. My "rac" is in the basement. Again, welcome back. ront |
KB7RZF Send message Joined: 15 Aug 99 Posts: 9549 Credit: 3,308,926 RAC: 2 |
Thanks for the update's Matt. |
edjcox Send message Joined: 20 May 99 Posts: 96 Credit: 5,878,353 RAC: 0 |
Matt Missed having some idea what is going on. Whoever is assigned ought to realize how important keeping us informed is. I appreciate your comments and efforts. Never engage stupid people at their level, they then have the home court advantage..... |
Geek@Play Send message Joined: 31 Jul 01 Posts: 2467 Credit: 86,146,931 RAC: 0 |
Thanks for the news Matt. I see your band has a new guitar player. Probably works for cat food only! Boinc....Boinc....Boinc....Boinc.... |
kittyman Send message Joined: 9 Jul 00 Posts: 51478 Credit: 1,018,363,574 RAC: 1,004 |
Matt........ Thank you so much for the informational update. I am sure I am joined by many others in saying that I miss your daily updates dearly. But I do understand it can get tedious after awhile. Please do continue to chime in when you feel it is not a bother. Your info has been missed. Meow meow. "Time is simply the mechanism that keeps everything from happening all at once." |
[B^S] madmac Send message Joined: 9 Feb 04 Posts: 1175 Credit: 4,754,897 RAC: 0 |
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tullio Send message Joined: 9 Apr 04 Posts: 8797 Credit: 2,930,782 RAC: 1 |
It's funny the SETI institute is working on their own volunteer analysis project. Basically just another thing that gets the public confused about who actually manages SETI@home. Anyway, you know how little labor resources we have, so we do what we can. This is the point I have tried to clarify, without offending any one, in the SETI@home in the news thread of SETI@Home Science Section but I was silenced because it looks like I am too old to treat this subject. Maybe you can have more luck. Tullio |
Don Hiebert Send message Joined: 8 Jun 00 Posts: 1 Credit: 12,452,890 RAC: 18 |
Thanks for the note. I know it's hard to do your work, plus juggle sysop emergencies AND write diary entries as well. Know that it is appreciated by those of us toiling away in the background. Don't underestimate it's importance. This project has more of a TEAM feel than any other I've worked on, because you keep us in the loop. Don Hiebert |
rebest Send message Joined: 16 Apr 00 Posts: 1296 Credit: 45,357,093 RAC: 0 |
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Bill Bryan Send message Joined: 14 May 99 Posts: 21 Credit: 9,164,019 RAC: 11 |
Thanks, Matt, for the update. You are missed. |
FrostKing9 Send message Joined: 20 Oct 01 Posts: 39 Credit: 23,815,960 RAC: 0 |
Matt... Thanks for the great update. You've been sorely missed. I DONATE money to SETI@home.... DO YOU? I'm just slowly BOINC'ing along. Hey... ET... you have a sister who likes earthlings? |
Dirk Sadowski Send message Joined: 6 Apr 07 Posts: 7105 Credit: 147,663,825 RAC: 5 |
SETI@home crew, just a note.. No new work available. ____________ [Optimized project applications, for to increase your PC performance (double RAC)!][Overview of abbreviations and smilies and their meaning.] |
Link Send message Joined: 18 Sep 03 Posts: 834 Credit: 1,807,369 RAC: 0 |
... although there are still some tapes/channels not splitted. Whatever the splitters are doing (they are "running"), it's not what they are supposed to do. |
Dirk Sadowski Send message Joined: 6 Apr 07 Posts: 7105 Credit: 147,663,825 RAC: 5 |
A friendly person did something.. ;-) After a few 10 thousands of fresh prepared WUs.. My BOINCs got only a few.. Now again no new work available. ____________ [Optimized project applications, for to increase your PC performance (double RAC)!][Overview of abbreviations and smilies and their meaning.] |
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SETI@home and Astropulse are funded by grants from the National Science Foundation, NASA, and donations from SETI@home volunteers. AstroPulse is funded in part by the NSF through grant AST-0307956.