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Document the OSX problem with OpenCL kernel header files.
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@magnumripper
magnumripper committed Mar 17, 2013
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Expand Up @@ -17,7 +17,13 @@ Many OpenCL formats fail at runtime on Mac OS X (whereas CUDA ones work
fine). We've seen these fail on Mac OS X 10.8.1: bf-opencl,
mscash2-opencl, nt-opencl, rar, raw-sha512-opencl, sha512crypt-opencl,
wpapsk-opencl, and xsha512-opencl. We suspect that this may be caused
by driver bugs. The same formats work fine on Linux.
by driver bugs. The same formats work fine on Linux using the same
hardware.

OS X also has a problem with run-time compile of kernels that include
header files. A workaround is to cd to the src directory and run each
OpenCL format once. After that, the kernel binary is cached so you can
move away from the src directory.

In GPU-enabled builds, running "john --test" (with no --format
restriction) will eventually fail (before it has a chance to test all
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