
608 Accelerating MATLAB
®
Performance
les (saved via the hdf and hdf5 set of functions, for HDF4 and HDF5 formats, respec-
tively), and v7.3-format MAT les. Note that MATLAB’s HDF5 implementation is generally
suboptimal, both in terms of performance
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and compression.
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For these reasons, I suggest to ensure that the default preference is for save to use -v7,
even on new releases that support -v7.3. This preference can be changed in MATLAB’s
Preferences/General window, or we could always specify the -v7/-v7.3 switch directly
when using save:
Over the years, MathWorks has xed several inefciencies when reading HDF5 les.
Some of these xes ...