OS X Yosemite GPU problems

Defender

Defender

Joined: 17 Jul 12

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17 Oct 2014 14:26:29 UTC

Topic 197755

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Hi guys,

today I updated to OS X 10.10 without problems. Only BOINC said it wasn't able to detect a GPU. My CUDA was on 6.0 so I chose to update it to 6.5. Now the GPU is detected, work is requested but they all run into errors "output file absent".

| CUDA: NVIDIA GPU 0: GeForce GT 650M (driver version 6.5.18, CUDA version 6.5, compute capability 3.0, 1024MB, 869MB available, 691 GFLOPS peak)
| Einstein@Home | Output file PB0051_00771_296_0_1 for task PB0051_00771_296_0 absent

What has to be done to make it work again?

Thank you for the support. Btw: We are talking about the 2012 MacBook Pro Retina and my BOINC-Version is 7.4.19.

Proud member of SETI.Germany

Richard Haselgrove

Joined: 10 Dec 05

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OS X Yosemite GPU problems

17 Oct 2014 16:14:01 UTC

Message 124164

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Looking deeper, it says

dyld: Library not loaded: /usr/local/cuda/lib/libcuda.dylib
  Referenced from: /Library/Application Support/BOINC Data/slots/6/../../projects/einstein.phys.uwm.edu/einsteinbinary_BRP5_1.39_i686-apple-darwin__BRP5-cuda32-OSX
  Reason: no suitable image found.  Did find:
	/usr/local/cuda/lib//libcuda.dylib: no matching architecture in universal wrapper
	/usr/local/cuda/lib/libcuda.dylib: no matching architecture in universal wrapper

Wasn't there a problem about the latest OS X only supporting 64-bit CUDA?

Your BOINC v7.4.19 should have

Quote:

client: Build Mac client as an x86_64 application rather than 32-bit, for compatibility with CUDA version 6.5 drivers. BOINC for the Mac now requires a 64-bit Intel Mac running at least OS 10.5.

but I don't know about the einsteinbinary.

Andrew Dicker

Joined: 6 Apr 13

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http://einstein.phys.uwm.edu/

18 Oct 2014 22:24:09 UTC

Message 124165

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http://einsteinathome.org/node/197721
and
http://einsteinathome.org/node/197707

CUDA 6 CAN be loaded on Yosemite, but requires kernel boot args to allow unsigned kexts to load, then for the user to manually load the kext post-boot (this is what i'm doing).

I have managed to compile a 64-bit app, but have no idea if it works.
I had to up the min compute capability to do so, as the 6.5 libraries drop support for very old cards.