GPU gather command clarification and GPU memory usage
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Dear All,
1. If x is a gpuarray, and y its cpu correspondent, after the command
y=gather(x)
is x still on the GPU or is cleared (by being gathered on the cpu)?
2. Also, is there a way to see memory usage just on GPU at a certain time point, and not combined with the cpu memory usage?
3. Can x be saved on the hard drive without first being passed as y on the cpu?
Thank you,
Octavian.
1 个评论
James Tursa
2015-4-2
编辑：James Tursa
2015-4-2
According to the sqrt(G) example in the doc, the gpuArray G still exists after the gather function, so that implies that your x above still exists as a gpuArray after the gather function.
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Edric Ellis
2015-4-2
0 个投票
- In this case, x still exists on the GPU - in general, input arguments to functions are not modified in MATLAB (some exceptions exist where the objects are handle types).
- Yes, look at the AvailableMemory field of the GPUDevice object returned by the function gpuDevice. See the documentation for more about this object
- Yes.
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