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Szip is an implementation of the extended-Rice lossless compression algorithm. The Consultative Committee on Space Data Systems (CCSDS) has adopted the extended-Rice algorithm for international standards for space applications.

Szip compression software, providing lossless compression of scientific data, has been provided with HDF software products as of HDF5 Release 1.6.0 and HDF4 Release 2.0.

More information is available on the SZIP web site.


First you need to decide on the version of the software you want to use. Use

module avail szip

to check what versions are available. We normally recommend using the latest version available. For example, to load the 2.1 version of SZIP use

module load szip/2.1

For more details on using modules see our modules help guide.