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Team OcUK BOINC Crunchathon weekend *** DISCUSSION ***

Discussion in 'TOSAH Archive' started by Berserker, Apr 19, 2005.

  1. bam0

    Soldato

    Joined: Oct 28, 2002

    Posts: 5,014

    Its not quite a 4 way opteron, but both machines i'm putting up are dual HT xeon boxes, so i'll be dumping 8 einstein WUs every 11 or so hours, they still going to be legit for this comp?
     
  2. Berserker

    Man of Honour

    Joined: Nov 4, 2002

    Posts: 15,431

    Location: West Berkshire

    OK, it looks like people are trying to find me out on the multiprocessors, so I'll have to separate them. I'll amend the rules later today when I've worked out the best way of handling things. ;)
     
  3. sparemips

    Gangster

    Joined: Jan 5, 2005

    Posts: 273

    Maybe some sort of averaging out based on the boinc reported ops/sec, or a maximum that counts as one machine ?
     
  4. Berserker

    Man of Honour

    Joined: Nov 4, 2002

    Posts: 15,431

    Location: West Berkshire

    Dual CPU machines tend to get lower ops/sec than singles (with the exception of Opterons). I also notice that 4.2x-4.3x clients appear to benchmark all CPUs simultaneously.
     
  5. tolien

    Caporegime

    Joined: May 16, 2003

    Posts: 25,368

    Location: ::1

    As a point to note, it would seem (from looking at BOINCStats and TeamOcUK, and the CPDN site itself) that the CPDN stats are screwed.
     
  6. Berserker

    Man of Honour

    Joined: Nov 4, 2002

    Posts: 15,431

    Location: West Berkshire

    Mine, or theirs? :confused:
     
  7. tolien

    Caporegime

    Joined: May 16, 2003

    Posts: 25,368

    Location: ::1

    The issue would appear to be at the CPDN end.

    The CPDN site itself seems to have stopped showing trickles from sometime on Monday morning, as well as not showing an increased total credit.
    Both BOINCstats and yourself show that there's been no new credit since then (indeed, yours says there's been no update to the stats since the 18th).
     
  8. rich99million

    Sgarrista

    Joined: Dec 26, 2002

    Posts: 9,348

    Location: Derbyshire

    Anyone? :confused:


    I've started my two machines on Einstein already so it's all ready anyway - race on!!!! :D
     
  9. Stan_Lite

    Man of Honour

    Joined: Apr 27, 2004

    Posts: 107,331

    Location: In bed with your sister

    Validation dosen't seem to be a problem just now. I only re-started BOINC at about 01.00 this morning and I have already gained 206 cobblestones on my previous total (9 out of 14 results validated so far).

    Assuming the validators don't break, everything should be hunky dory by the time the comp starts :cool:

    Stan :)
     
  10. MDPlatts

    Man of Honour

    Joined: Oct 18, 2002

    Posts: 4,422

    Location: 2nd City - Manchester.

    not 100% sure its possible to tell, but the 4.2x clients benchmark much lower than the earlier ones - by approx 20% or so - 4.25 should be minimum - though I guess self compiled clients are ok if thats possible to tell as well.
     
  11. Berserker

    Man of Honour

    Joined: Nov 4, 2002

    Posts: 15,431

    Location: West Berkshire

    OK - How's this for dealing with multiprocessors...

    Hosts with two or more processors are permitted, but will have a handicap applied to their outputs. This will be applied by multiplying the reported credit by a handicap factor once for each reported CPU. The handicap will be: 0.89 for Xeon systems showing more than 2 CPUs with speed of 2.0GHz or more, 1.00 for Pentium 4 systems showing up to 2 CPUs, 0.71 for Opteron-based systems, and 0.85 in all other cases.

    Just to show how this works, let's take a Dual Opteron, Dual Athlon MP, and Dual Xeon HT, all with 1,000 credit:

    Opteron: 1000 * 0.71 * 0.71 = 504.1
    Xeon: 1000 * 0.89 * 0.89 * 0.89 * 0.89 = 627.4
    Athlon MP: 1000 * 0.85 * 0.85 = 722.5
    Single CPU: 1000 (no handicap)

    The weightings may still need a bit more tweaking, so I'm open to suggestions on those. The Xeon weightings are intended for the Nocoma core. I can't tell the difference between, for example, Nocoma and Prestonia, so older Xeons will be at a disadvantage.

    The other alternative is to keep the multiprocessors completely separate.
     
  12. Gojira

    Wise Guy

    Joined: Aug 7, 2004

    Posts: 1,778

    Location: Sandwell UK

    Just to confirm, my single HT P4 stil only counts as one processor?

    If not, I'll have to take the T-bird off the list.

    Alan Woodford
     
  13. Berserker

    Man of Honour

    Joined: Nov 4, 2002

    Posts: 15,431

    Location: West Berkshire

    The restriction is two hosts (i.e. computers) per project, not two CPUs. :)

    HT only counts as one CPU anyway.
     
  14. RogueTLDW

    Gangster

    Joined: Nov 7, 2004

    Posts: 391

    Location: Hastings UK

    Guys - unfortunately I'm going to be out of work as of next friday - contract ends and found out today I'm not getting an extension this time round, been there two years so it had to end sooner or later .. wont be long before I'm back on track but it does mean I may have to De-Boinc what PC's I do have running there - even if thats the case I will be leaving at least two of them up for the crunchathon though i'm not sure if they will last long before they get spotted etc.
     
  15. rich99million

    Sgarrista

    Joined: Dec 26, 2002

    Posts: 9,348

    Location: Derbyshire

    unlucky mister rogue sir - i do hope those two will be running einstein so i can pound you into submission


    muwahahahahahahha - errr sorry it's late and i'm sleepy :p

    oh sorry to hear about the job - hope you get something else sorted soon :)
     
  16. RobOC

    Hitman

    Joined: Nov 11, 2004

    Posts: 522

    Come on all your pussies, sign up :D your hardware not up to it?
     
  17. MGP

    Mobster

    Joined: Oct 24, 2004

    Posts: 2,576

    Location: Surrey

    That's very bad news :( Hope you get another job soon. On the other hand, maybe I finally get the chance to catch you up :p

    As for this compo, unfortunately I'm not going to be around enough to massage my PCs, as I'll be buried in exams. Maybe next time.
     
  18. Berserker

    Man of Honour

    Joined: Nov 4, 2002

    Posts: 15,431

    Location: West Berkshire

    OK - update on the stats. I'm going to start a reload of SETI@home stats sometime tomorrow. Hopefully that'll be done inside 24 hours, but time will tell. Other projects take a few hours each.

    Then I just need to do the stats page. Hopefully Tuesday/Wednesday for that.

    So, here's hoping I can get it all done in time. :eek:
     
  19. Stan_Lite

    Man of Honour

    Joined: Apr 27, 2004

    Posts: 107,331

    Location: In bed with your sister

    Loads of Pro-Plus washed down with Red Bull and you'll be fine :D

    I'm sure we all appreciate your sterling efforts in organizing and running this competition (as well as the TeamOcUK stats site) and if we ever happen to wind up at the same OcUK meet, I will buy you a pint (or two).

    Stan :)
     
  20. Berserker

    Man of Honour

    Joined: Nov 4, 2002

    Posts: 15,431

    Location: West Berkshire

    At the moment, I'm trying to prevent the Team OcUK website from dieing for upwards of an hour during SETI@home updates (yes, it does - page load times of 20 minutes plus have been experienced personally).

    As for meets, just don't think I'd cope on the BBQ/camping weekend, otherwise I'd be there in a flash. MB-organised events for the w1n. :(