Information about SZIP can be found on the SZIP website. From the SZIP home page:
"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. 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 "
The SZIP source code is available from the SZIP website referenced above. You may want to check there for recent updates.
SZIP can be used as a compression component in HDF5
Untar the SZIP package:
tar -xvzf szip-2.1.tar.gz cd szip-2.1
env CC=pgcc ./configure --prefix=/usr/local
Build the code:
make >& make.log make check >& make_check.log
Finally, install the results.
sudo make install