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World Community Grid Forums
Category: Support
Forum: BOINC Agent Support
Thread: How to use BOINC Cross Project ID? |
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Thread Status: Active Total posts in this thread: 18
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Sekerob
Ace Cruncher Joined: Jul 24, 2005 Post Count: 20043 Status: Offline |
Think your problem is most likely related to a client that is not attached to multiple active projects.
----------------------------------------The client does not generate the critical CPID, nor has any relation whatsoever to the nick. It's the email address entered at each project that generates it there, the client merely finding the oldest amongst the projects it's attached to.
WCG
----------------------------------------Please help to make the Forums an enjoyable experience for All! [Edit 2 times, last edit by Sekerob at Jan 26, 2009 9:03:13 PM] |
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rilian
Veteran Cruncher Ukraine - we rule! Joined: Jun 17, 2007 Post Count: 1460 Status: Offline Project Badges: 
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http://stats.free-dc.org/stats.php?page=userb...602d6dade8ee661252d106d2d
----------------------------------------http://stats.free-dc.org/stats.php?page=userb...0d20684189c5a56dd46c34159 one of my computers that rarely goes online connected this eveninig... and now all is messed up again  |
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Sekerob
Ace Cruncher Joined: Jul 24, 2005 Post Count: 20043 Status: Offline |
Read what we write. That 5 hour client has how many active projects attached?
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WCG
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rilian
Veteran Cruncher Ukraine - we rule! Joined: Jun 17, 2007 Post Count: 1460 Status: Offline Project Badges:
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Read what we write. That 5 hour client has how many active projects attached? only WCG the problem is that i have several computers in several places and i have no physical access to them. ps: yes i've read all ps2: why when this rare client connects to the server, it does not get and cache new CPID ? well, i think all this stuff will end when i reinstall boincs everywhere ---------------------------------------- [Edit 2 times, last edit by rilian at Jan 26, 2009 9:12:44 PM] |
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Sekerob
Ace Cruncher Joined: Jul 24, 2005 Post Count: 20043 Status: Offline |
That client only gets the one CPID from WCG thus has nothing to compare it against to determine the oldest one. Why don't you just attach it to a second/third active project of yours? Run manually an update against each project, whilst having the fetch work set to No.
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WCG
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rilian
Veteran Cruncher Ukraine - we rule! Joined: Jun 17, 2007 Post Count: 1460 Status: Offline Project Badges:
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this may take some time... i have computers in 7 different places :))
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Hi again, rilian.
As I said earlier, the actual mechanism is fiendishly complicated, both in concept and in execution. The rule is this: your CPID is only guaranteed to be stable if you have at least one host attached to ALL your projects. Otherwise, you can get a situation where your CPID ping-pongs between values from different hosts, based on different "oldest projects". This bug was reported to BOINC two years ago (!), and as far as I know has never been fixed. http://boinc.berkeley.edu/trac/ticket/353 |
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rilian
Veteran Cruncher Ukraine - we rule! Joined: Jun 17, 2007 Post Count: 1460 Status: Offline Project Badges:
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http://boinc.berkeley.edu/trac/ticket/353 This will require a few changes: a CPID timestamp field in the database, which must be passed in the scheduler request and response, so that the server can compare the age of the provided CPID against the age of the stored CPID. yeah, you suggested a good solution. too bad it has minor priority i guess this topic may get [resolved] ? |
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