Merge computer problem/question

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Profile Fred G
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Message 260096 - Posted: 10 Mar 2006, 14:57:26 UTC
Last modified: 10 Mar 2006, 14:58:33 UTC

I was tweaking this computer http://setiweb.ssl.berkeley.edu/show_host_detail.php?hostid=2211961 and it crashed. When I booted it back up it had reset the project. My client_state.xml/client_state_prev.xml and projects folder were empty of all WU's. This has happened twice since I built this computer. Anyway my problem is I have two of the same computer listed in my "Computers on this account" page. The one above and this one. http://setiweb.ssl.berkeley.edu/show_host_detail.php?hostid=2244651 Yesterday I was able to merge the last one and it said that the merge was complete, however the second computer still shows up. When I click on either it doesn't show anything to merge to. The only difference I can see is they have different benchmarks. One optimized and the other one is not. My question is can the different benchmarks be causing Boinc to see these as different computers?

>Fred

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Darren
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Message 260113 - Posted: 10 Mar 2006, 15:42:30 UTC - in response to Message 260096.  

When I click on either it doesn't show anything to merge to. The only difference I can see is they have different benchmarks. One optimized and the other one is not. My question is can the different benchmarks be causing Boinc to see these as different computers?


The different benchmarks are not the cause, the rpc times are. 2211961 made contact with the server as recently as 9:39 UTC on 10 March when it downloaded new work. 2244651 was created at 8:48 UTC on 9 March. Since boinc had contact with the older system after the creation time of the newer system, it will consider this to mean that they must be different machines, and therefore won't allow them to be merged. The best you can do is wait until all the work 2211961 cycles off the database and then just delete it from the list.


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Message 260147 - Posted: 10 Mar 2006, 16:56:13 UTC

I was able to merge them once but it didn't take. I wondering if I could reinstall Boinc, creating another new computer, then merge the three?

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Message 260151 - Posted: 10 Mar 2006, 17:16:17 UTC - in response to Message 260147.  

I was able to merge them once but it didn't take. I wondering if I could reinstall Boinc, creating another new computer, then merge the three?


I don't know for sure, but my guess would be that it probably wouldn't work. It would likely do the same thing again that it did before. Bruce posted the section of code on the einstein board that determines what can and can't be merged, but I don't know exact details of how it works. From the code, though, it only compares 2 systems at a time. When you asked it what could be merged, it would show you your newly created host and then it would show you both of your others - as they could each be merged with the new host, however, if you selected all to be merged when it compared to 2 older hosts only with each other it would fail the criteria set out in the code. I would guess that's why it showed you all three, but then only accepted 2 when it actually did the merge.

That said, it seems that it would work if you did it in steps. I'm trying to picture how the rpc's would carry, but it seems that you could create a new host and merge only the oldest one with it, which might eliminate the overlapping rpc's. If it did, then you could merge the current new host with the newly created host. It might even take one additional step to make another completely new host for the final merge. And you would have to do it with detach and reattach to ensure that each host was really dead and didn't create any new rpc's as you go. A lot of work - and their's really no benefit in doing it - but it might work that way.


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Message 260184 - Posted: 10 Mar 2006, 18:26:20 UTC

Thanks for the help. I guess I just like things orderly. I wouldn't have this problem it it hadn't reset on a crash. I still don't know why it does that on this computer. I had others crash without any problems with the Boinc or Seti client. Thanks again!

>Fred

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Message boards : Number crunching : Merge computer problem/question


 
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