OpenCL device override and backend selection via Environment Variable and system property

ClearVolume / clearvolume

ClearVolume is a real-time live 3D visualization library designed for high-end volumetric microscopes such as SPIM and DLSM microscopes. With ClearVolume you can see live on your screen the stacks acquired by your microscope instead of waiting for offline post-processing to give you an intuitive and comprehensive view on your data.

http://clearvolume.github.io

GNU Lesser General Public License v3.0

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OpenCL device override and backend selection via Environment Variable and system property #29

Closed skalarproduktraum closed 9 years ago

skalarproduktraum commented 9 years ago

This PR enables overriding the OpenCL device selection by CV.

CUDA or OpenCL may now be enforced by either setting the System Properties ClearVolume.disableOpenCL or ClearVolume.disableCUDA, or the env variables CV_DISABLE_OPENCL or CV_DISABLE_CUDA.
the OpenCL device to be used can now be selected by defining the env var CV_OPENCL_DEVICE=platformId,deviceId to force ClearVolume to use the respective device without taking this device's fitness into account.