Technical News, and SETI@home daily stats for 15.06.2007.

[Rattledagger]

Horizontal Hold (Jun 14 2007)

We are quite pleased with the BOINC database performance since the swap yesterday. In fact, it recovered quite nicely even though we lost our large backlog of results to send. When that queue reaches zero, that puts a little extra strain on the whole system as that increases the number of users reconnecting trying to get work. In any case, that queue is growing, and so far everything is running lickety split, relatively speaking. Bob is going to optimize some of the other non-feeder queries in the meantime to squeeze extra performance from MySQL.

Oddly enough, yesterday afternoon I noted one of the lights on the 3510 (jocelyn's external RAID array) was amber. Turns out during the moving and power cycling the previous day we must have pushed an ailing drive over the dark edge into death. Fair enough - the array pulled in a spare and sync'ed it up before we realized what happened. So we'll replace that drive in due time - Meanwhile we have another spare at the ready in the system.

Dell replaced the bad CPU in isaac, which fixed one problem, but we were still having unexplained crashes when using the latest xen kernel. However a new kernel came out and we upgraded to that this morning and so far so good. One theory is the bad CPU screwed up the previous kernel, which might explain why it suddenly had problems when it was fine for weeks before that. Then again.. how does a bad CPU permanently screw up a kernel image?

Also in good news I got a solaris version of the multibeam splitter compiled today. I was slowed by lots of problems which, on hindsight, were kinda stupid though not my fault or anybody else's. As stated elsewhere this was more of an exercise to get used to the programming environment Jeff and Eric have been mired in for a while now, so I had to learn the ropes. Anyway.. it's running now and will take a while before we get any results. Basically this whole step is to give us the warm fuzzy feeling that, when we move splitters to off solaris and onto linux, there aren't any endian issues we haven't yet addressed.

- Matt

#____Total Work Done____Todays WD_____AWD________overtake_______Team-name
01______277.011.692______664.454______670.552______impossible______SETI.USA
02______239.700.823______357.414______335.402______impossible______SETI.Germany
03______100.617.044______105.548_______94.367______impossible______BroadbandReports.com Team Starfire
04_______96.492.802______223.073______207.695______impossible______L'Alliance Francophone
05_______85.639.999______144.112______139.403______impossible______BOINC Synergy
06_______83.057.421______113.691_______97.442______impossible______Czech National Team
07_______72.417.773______122.119______115.635______impossible______SETI@Netherlands
08_______50.787.150______195.098______184.195______impossible______The Knights Who Say Ni!
09_______43.948.045________3.700________5.339______impossible______OcUK - Overclockers UK
10_______32.338.775________1.365_________-955_____33.863 days______BOINC.Italy
11_______31.866.439_______51.207_______46.355______impossible______Overclockers.com
12_______31.581.935_______78.355_______81.175______impossible______Team Art Bell
13_______27.866.009_______60.831_______63.138______impossible______Team 2ch
14_______22.887.969_______53.119_______48.148______impossible______The Planetary Society
15_______16.656.116_______95.310______102.094______impossible______Team MacNN
16_______16.419.366________6.078_______12.570______impossible______Ars Technica
17________3.397.821_______21.609_______25.218______impossible______Universe Examiners
18_______51.988.831_______66.283_______63.733______notanoption_____TeAm AnandTech
19_______-1.635.180_______20.946_______24.135_________68 days______Phoenix Rising
20_______-4.311.314_______56.565_______43.268________100 days______SETI@Taiwan
21_______-9.526.045_______65.652_______61.750________154 days______Team Starfire World BOINC
22_______-9.847.631________1.730________5.167______1.906 days______Hewlett-Packard
23______-10.430.481_______-1.441_______-8.613______impossible______Amateur Radio Operators
24______-10.834.390_______48.459_______42.554________255 days______SETI@China
25______-11.275.828________2.522________2.140______5.269 days______PC Perspective Killer Frogs
26______-11.865.884_______13.641________8.144______1.457 days______Canada
27______-12.194.860______-39.809______-33.358______impossible______Planet 3DNow!
28______-13.089.441_______52.038_______47.156________278 days______Dutch Power Cows
29______-13.568.392______-27.289______-29.180______impossible______2CPU.com
30______-15.013.347_______-8.017_______-2.606______impossible______Team MacAddict
31______-16.199.738_______-1.365_______-1.064______impossible______Team NIPPON
32______-18.247.205______-15.354______-14.129______impossible______BOINC SETI@home RUSSIA
33______-18.510.360______-13.508______-15.515______impossible______BOINC@Denmark
34______-19.215.034______-29.226______-30.167______impossible______Portugal@Home
35______-19.381.897__________545_______-3.282______impossible______Hungary
36______-20.616.079______-52.129______-47.477______impossible______Picard
37______-20.923.953_______20.704_______16.472______1.270 days______UK BOINC Team
38______-21.852.454______-42.282______-41.420______impossible______LittleWhiteDog
39______-22.419.339_______19.399_______23.490________954 days______US NAVY
40______-24.048.324________2.021_______-1.604______impossible______BOINC@AUSTRALIA
41______-24.165.611_______-8.611______-10.551______impossible______U.S.Air Force
42______-24.229.236______-16.931______-20.455______impossible______SETI@klamm.de
43______-24.750.559______-25.235______-26.322______impossible______Team EDGE
44______-25.074.291_______10.244_______-2.881______impossible______SETI.hr
45______-25.198.914______-25.495______-23.346______impossible______HispaSeti & BOINC
46______-26.792.501______-33.485______-33.090______impossible______SETI Sverige [Sweden]
47______-28.276.920______-24.406______-26.761______impossible______BOINC UK
48______-29.476.630________4.543_______-1.760______impossible______AUSTRIA - NATIONAL - TEAM
49______-29.615.182______-33.321______-33.499______impossible______SETI@Home Poland
50______-29.623.274_______-7.029______-15.603______impossible______BOINC.SK

Appart for Anandtech's stats, it shows how much more/less than Anandtech.
Also shows based on Average Work Done how many days for Anandtech to overtake the team, or be overtaken by a team behind

 

[petrusbroder]

Wow, thats some great news! :sun:
Thanks for the news and the stats, Rattledagger!

 

[BlackMountainCow]

Indeed, good news!

Thx RD!