Notes on CDMS install

The CDMS module is part of the CDAT distribution available from the PCMDI software portal (http://www2-pcmdi.llnl.gov/cdat/).

You can either install the entire CDAT distribution or alternatively use the CDAT-lite package.

Notes on UDUNITS-2 install

The UDUNITS-2 package can be obtained from the unidata website (http://www.unidata.ucar.edu/software/udunits)

To run the CF checker

Once you have both UDUNITS-2 and CDMS installed you need to complete the following steps in order to run the CF Checker.

1. Make sure that the location of the cdms library is in your PYTHONPATH

   E.g. export PYTHONPATH=/home/rsh/software/CDAT-5.2-cdms/lib/python2.5/site-packages

2. Make sure that the path to the udunits libraries are in the system library path or alternatively set the environment variable LD_LIBRARY_PATH

   E.g. export LD_LIBRARY_PATH=$PREFIX/lib

   where $PREFIX is the --prefix option you passed to the configure script when installing udunits.

3. Depending on the platform you are installing on, you may need to edit the name of the udunits2 library in the cfchecks.py script. If the name of the library is anything other than libudunits2.so then you will need to modify, as appropriate, the line

   udunits=CDLL("libudunits2.so")

4. You may also need to modify the path to the python interpreter at the top of the cfchecks.py script.

5. Run the checker by typing:

   cfchecks.py <netCDF_file.nc>

If you have any problems or comments please contact Rosalyn Hatcher (r.s.hatcher@reading.ac.uk)