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SETI on Mac

SETI@home Weekly Update

May 26, 2000 - Dan Knight

Team Art Bell should pass the one million mark in the next two weeks. They will be the first club team to do so, although three corporate teams (SGI, Sun, and Compaq) have already done so.

A lot of teams changed places this week, mostly due to members defecting - several teams had one or more days when they actually lost work units because of members leaving.

We are color coding changes: red text for hot teams that have climbed in the standings, blue for those that have cooled and dropped in the standings.

Team 6100, the slowest part of Team Mac Observer (it's only for unaccelerated Power Mac 6100s) has grown to six members. We've now completed 30 units (15 in the past week!) and are averaging about 75 hours per unit. That means each computer can do about 2.3 units per week, assuming they are running SETI@home full time (mine is). It's not a huge contribution to the effort, but we're adding about 2 units per day.

Key tools in this anaysis are the SETI@home team statistics page, the SETI Checker program (which visually graphs recent weeks for team performance), and Dave's Stats, which cover the whole SETI@home project, as well as the team he's part of, The Knights Who Say Ni! Unfortunately, because of Dave's current mathematical model, his current projections are skewed by the large defections of the past week.

In the following analysis, data in the second column comes from the SETI statistics page. Information in the third column comes from my analysis and Dave's Stats, which is my source for the average recent work units per day (because the page has not yet been updated for Friday, we're using Thursday's averages). Note that this is a volatile figure which can change a fair bit from day to day, especially as members join or leave a team and bring their work units with them.

You can also view weekly reports from April 14, April 21, April 28, May 5, May 12, and May 19.

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1. Team Art Bell. The undisputed leader among club teams, Lamb Chop should overtake them this summer.

986,322 units
12,552 members
2,978 years
avg. 26:27
+8,535 units
+7 members
Avg. 1,023 units per day

2. Team Ars Technica Lamb Chop has the second best average time per unit among the Top 25. They are gaining on Team Art Bell and should overtake them this summer.

876,154 units
2,283 members
1,295 years
avg. 12:57
+29,304 units
+26 members
Avg. 4,027 units per day

3. Team MacAddict is the top Mac team. They grew by 25,525 units in a single day thanks to some new member, but they are not crunching enough units every day to climb in the standings.

756,113 units
3,651 members
1,242 years
avg. 14:24
+40,541 units
+26 members
Avg. 5,770 units per day

4. The Knights Who Say Ni! are moving up in the standings - they were 9 in late March and 6 last week. They should reach 3 by the end of the year.

471,386 units
581 members
678 years
avg. 12:36
+21,370 units
+20 members
Avg. 3,024 units per day

5. The Planetary Society remains at #5.

387,198 units
1,117 members
818 years
avg. 18:30
+8,676 units
+8 members
Avg. 1,258 units per day

6. Team Slashdot had some defection this week, including one day with a negative number of work units.

367,088 units
2,119 members
739 years
avg. 17:38
+2,519 units
-2 members
Avg. 365 units per day

7. SETI.Germany has a pretty firm hold on 7th place for now. They could pass Team Slashdot this summer.

338,157 units
1,268 members
577 years
avg. 14:57
+16,186 units
+30 members
Avg. 1,085 units per day

8. O'Grady's Go2Mac.com Team is the second highest Mac team and not expected to rise in the standings.

286,907 units
1,210 members
541 years
avg. 16:32
+4,428 units
+1 member
Avg. 640 units per day

9. Canada lost a lot of work units this week, but remains at 9. Dave's stats project them passing O'Grady's team in July.

247,206 units
928 members
526 years
avg. 18:38
+5,366 units
+8 members
Avg. 747 units per day

10. Rounding out the Top 10 is Linux, had one day where they lost over 1,000 work units.

240,819 units
427 members
404 years
avg. 14:43
+2,994 units
+8 members
Avg. 673 units per day

11. SETI@Netherlands, took a week off from passing other teams. Dave's stats incdicate they should pass the Linux team by the end of the month.

217,951 units
766 members
371 years
avg. 14 :55
+8,126 units
+21 members
Avg. 1,015 units per day

12. OS/2 Warp climbed past SETI Switzerland.

200,669 units
600 users
447 years
avg. 19:40
+4,272 units
+4 members
Avg. 611 units per day

13. SETI Switzerland dropped due to member defection, which cost them over 22,500 work units in a single day.

183,627 units
374 members
309 years
avg. 14:43
-17,524 units
+9 members
Avg. -2,454 units per day

14. Team User Friendly, composed of fans of the comic strip, has the slowest average time among the Top 15. They passed Team NIPPON due to defection on the Japanese team.

166,996 units
817 members
374 years
avg. 19:36
+2,881 units
-2 members
avg. 237 units per day

15. Team NIPPON was passed by Team User Friendly due to a defection which cost them over 7,500 units in one day.

172,019 units
561 members
275 years
avg. 14:38
-7,228 units
+2 members
avg. -1,024 units per day

16. Team Mac Observer remains at 16 this week. They should catch Team User Friendly in early June.

159,760 units
646 members
277 years
avg. 15:12
+4,760 units
+6 members
Avg. 689 units per day

17. FreeBSD had a large infusion of work units on Thursday and moved up to 16. They may pass Team User Friendly in June.

154,548 units
306 members
269 years
avg. 15:15
+1,767 units
+3 members
Avg. 249 units per day

18. Team Lockergnome has the slowest average time in the Top 20, yet managed to get past SETI@Home Poland.

153.530 units
1,312 members
400 years
avg. 22:48
+5,657 units
+2 members
Avg. 442 units per day

19. SETI@Home Poland was passed by the FreeBSD team on Thursday due to a defection that cost them almost 4,700 units.

149,944 units
318 members
261 years
avg. 15:14
+1,059 units
+1 member
Avg. -344 units per day

20. Team BeOS rounds out the Top 20, trailing SETI@Home Poland by over 10,000 units.

138,740 units
636 members
250 years
avg. 15:49
+2,657 units
+9 members
Avg. 381 units per day

Just below the Top 20 we have:

21. Yahoo SETI Club Team does not appear to be a threat to any team in the Top 20.

120,969 units
289 members
233 years
avg. 16:53
+1,886 units
+2 members
Avg. 270 units per day

22. The Amateur Radio Operators team should pass the Yahoo SETI Club, probably in June.

120,368 units
288 members
272 years
avg. 19:47
+5,008 units
+4 members
avg. 432 units per day

23. Matrox Users passed both Quebec and the Amateur Radio Operators this week.

117,240 units
453 members
174 years
avg. 13:01
+4,512 units
+10 members
avg. 441 units per day
24. Team AnandTech was doing so well, but dropped a notch when a defector cost them over 9,700 units in one day.
116,765 units
310 members
177 years
avg. 13:11
+2,038 units
+3 members
avg. 302 units per day

25. Quebec finishes out the Top 25.

113,204 units
400 members
235 years
avg. 17:42
+2,948 units
+3 members
avg. 430 units per day

This week, nothing below the Top 25 looks to be moving into the Top 20 in the near future.

Possible future contenders for Top 25 spots:

  • Team EDGE is currently at 27. Dave projects them at 13 within a month, but that seems overly optimistic.
  • Forum Hardware.FR Team, 37, will reach 22, according to Dave's stats.

Remember all this is based on a fairly simple mathematical model that is thrown off by significant defections or additions to a team's stats. Dave and I have been corresponding to develop a model that will create more reliable predictions.

That's how the top team standings look this week on the SETI@home club team page. Come back next Friday for another update. (And if you'd like to join a team, I'd like to see you join Team Mac Observer.) LEM

Recent articles about SETI@home

  • Team 6100 Update, 2001.12.20. We've completed over 500 units and donated over 5 years of CPU time to SETI@home since May 2000.
  • Team 6100 @300 units, SETIonMac, 2001.08.14. Team using old Power Macs has passed the 300 unit mark running SETI@home.
  • SETI@home monthly update, 2001.08.01. Sad news - Team Mac Observer has fallen to #26 in the team standings.
  • A look at SETI Checker, 2000.04.25. This freeware program lets you follow your favorite SETI@home teams.


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