Does Java use the GPU

Posted by Robert Dougherty on May 09, 2021; 7:13pm
URL: http://imagej.273.s1.nabble.com/Does-Java-use-the-GPU-tp5024656.html

Dear All,
I've been asked a question about selecting a computer: is the speed of the CPU or the GPU more important?  In this case the plugins to be executed are very compute intensive and only make images of the results at the end.  So the the first thought is CPU.  But a colleague suggested that maybe Java is using the GPU for numerics behind the scene.  Clearly this could be made to happen by calling a library that finds and uses a GPU on purpose.  Is ImageJ doing this explicitly or somehow implicitly, apart from displaying graphics? I think probably not, since using the the FPU on the CPU would be faster than setting up a call to the GPU unless a lot of operations were queued up.

Bob

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