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Grant (SSSF)
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Message 1740101 - Posted: 6 Nov 2015, 9:08:00 UTC
Last modified: 6 Nov 2015, 9:09:10 UTC

While hunting for resends on the automatic Invalids, I've come across a lot of resends, mostly _2 (some _3) due to computation errors from Mac systems.

eg
Computation error

Most of them seem to be due to too old hardware, but I have seen some where the message was too many restarts, all within a few seconds. From what I can remember, they are all opencl_ati5_mac related.
Grant
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Richard Haselgrove Project Donor
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Message 1740120 - Posted: 6 Nov 2015, 11:08:03 UTC - in response to Message 1740101.  

This problem is being extensively debated by the developers - including Eric - in the thread OpenCL onATI Radeon HD 4670 worked. Once.
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Message 1740132 - Posted: 6 Nov 2015, 13:02:40 UTC - in response to Message 1740101.  

and the mac in my list worked as is on Yosemite and now El Capitan, though the newer series radeon was a tad sluggish when crunched with, so I put a 780 to crunch on and left the radeon for display only. Maybe there're some clues in that.

Seems to be even trickier to look under the hood on these things than the Linux machine. I suspect that's by design, and so Mac apps need to be a fair bit smarter, so as to remove cognitive load from the users.
"Living by the wisdom of computer science doesn't sound so bad after all. And unlike most advice, it's backed up by proofs." -- Algorithms to live by: The computer science of human decisions.
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Grant (SSSF)
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Message 1740251 - Posted: 6 Nov 2015, 21:41:06 UTC - in response to Message 1740120.  

This problem is being extensively debated by the developers - including Eric - in the thread OpenCL onATI Radeon HD 4670 worked. Once.

Ok, known issue.
Thanks.
Grant
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Message boards : Number crunching : Errors from some Mac systems.


 
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