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World Community Grid Forums
Category: Support
Forum: BOINC Agent Support
Thread: You can't open the application wcg_hcc1_img_6.40_powerpc-apple-darwin |
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Thread Status: Active Total posts in this thread: 15
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knreed
Former World Community Grid Tech Joined: Nov 8, 2004 Post Count: 4504 Status: Offline Project Badges: 
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This change has been released. Intel macs will no longer be sent the powerpc binary.
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
OSX 10.7.x removed legacy support for PPC applications. Apple removed the Rossetta subsystem. This feature had been listed as obsolete for the last version of the OSX 10.6.x. PPC applications are supported on OSX 10.0-10.6. PPC chip systems have not been made since 2006 if I remember correctly. The last OSX version to boot on PPC systems is 10.5 and the last version to support the Rosetta translation layer system is 10.6.
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
My interpretation of what you say is, this problem is because upgraders have these legacy references, whereas those that did a [clean] OS-X install [on an Intel Mac] haven't? Does that /alt platform line exist in your copy of the sched_request_www.worldcommunitygrid.org? [probably not]
Appreciate your eludation. --//-- |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
I have not upgraded to 10.7.x because I still use some PPC software so I am still on 10.6.8. I am not able to tell you if BOINC still would include the alt platform message saying I could run PPC on a 10.7 at this time. I don't know how BOINC tests for the presence of Rosetta on an OSX system of if it just assumes that Rosetta is alway present in OSX Intel versions. OSX has always had Rosetta present since the introduction of Intel based Macs. Rosetta was present in late generation of 10.4.x till 10.6.8. Just for a bit of a historical oddity when the Intel based macs where introduced they had special versions of OSX 10.4.x until 10.5 was released the code trees where not totally merged until that version of the OS.
----------------------------------------Edit I suspect that BOINC would include the alt platform message because I suspect it is a hard code message that Intel Macs have Rosetta. To tell whether Rosetta is present you would need to Parse the Darwin kernel version and just never send PPC science apps to any OSX machine with a Darwin kernel version higher than 11.0 I think the current kernel is 11.3 for OSX 10.7.3 My machine on other BOINC projects reports a Darwin Kernel version of 10.8 which corresponds to OSX version 10.6.8. 10.6.0 shipped with a Kernal version of 10.0; 10.5.o has kernel 9.0 ; 10.4.0 has kernel 8.0. [Edit 1 times, last edit by Former Member at Mar 9, 2012 7:26:37 PM] |
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knreed
Former World Community Grid Tech Joined: Nov 8, 2004 Post Count: 4504 Status: Offline Project Badges:
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From my conversations with BOINC about this issue, it is hard coded in the 6.10 client (I haven't checked the source code myself). The hard coding has been removed in more recent versions (I do not know if the newer versions detect rosetta or not). I was given the advice to simply remove the powerpc versions so I suspect that BOINC has declared support for the powerpc versions deprecated.
----------------------------------------We will continue to support the platform with the existing app versions we have as long as there is a group of computers large enough to keep the work moving through the system. [Edit 1 times, last edit by knreed at Mar 9, 2012 9:33:59 PM] |
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