What is different between AvailableMemory and FreeMemory?

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Matlab seems that there are two properties of gpuDece, "FreeMemory" and "AvailableMemory".
gd = gpuDevice;
gd.FreeMemory
gd.AvailableMemory
"AvailableMemory" is explained in the docmentation, but "Freememory" is not.
I want to know if this is simply overlooked by me or deprecated by matlab
There may be differences between the two results.
I want to know the difference between the two.
Thank you!

Answers (1)

Joss Knight
Joss Knight on 28 Nov 2021
Edited: Joss Knight on 28 Nov 2021
Both are valid and supported, but FreeMemory was replaced many years ago by AvailableMemory as the documented way to determine how much space there is left in device memory.
Because MATLAB pools memory for performance reasons, some memory is allocated by MATLAB (not 'free') but can be released if needed (and therefore 'available').
Only FreeMemory is accessible by other applications.

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