rootbeer and Nvidia Optimus

Question

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.

Answer 1

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.