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Does the Java CUDA tool rootbeer work with Nvidia Optimus on Linux when the laptop does not have a BIOS switch for the graphics system? In other words, does it work where the graphics system is always a hybrid.

H2ONaCl
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You can get it to run if you use bumblebee and optirun. I did this from within Eclipse. Threads will run to completion and in my tests, the computed results are the expected results. Whether numberOfJobs * elapsedTimePerJob / elapsedTime > 1.0 is a matter of experimentation and I found that often it is far less than 1.0.

H2ONaCl
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  • See [here](http://stackoverflow.com/questions/13284881/rootbeer-cuda-example-code-quantified-throughput-gain) for details on how to get good speedups. Or email me at pcpratts@trifort.org – pcpratts Apr 03 '13 at 20:55