NetCDF

Machine-independent libraries for representing scientific data

Homepage Version(s): 4.8.0 (GNU GCC/Intel), 4.3.1 (netcdf-cXX), 4.5.3 (Fortran)

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NetCDF requires an environment module

In order to use NetCDF, you must first load the appropriate environment module:

module load gnu netcdf

From the NetCDF FAQ page:

"NetCDF (network Common Data Form) is a set of interfaces for array-oriented data access and a freely distributed collection of data access libraries for C, Fortran, C++, Java, and other languages. The NetCDF libraries support a machine-independent format for representing scientific data. Together, the interfaces, libraries, and format support the creation, access, and sharing of scientific data."

Using NetCDF on RCC Resources

Below is an example of using the GNU implementation of NetCDF to compile a simple two-dimensional array from the Example NetCDF programs page on the HPC:

## Load the correct compiler module
$ module load gnu netcdf # substitute 'intel' for 'gnu' if using that compiler

## Download example code XY array source code from NCAR
$ wget https://www.unidata.ucar.edu/software/netcdf/examples/programs/simple_xy_wr.c

## Compile it with GCC
$ gcc -c simple_xy_wr.c -I/opt/rcc/gnu/include
$ gcc -o simple_xy_wr.x simple_xy_wr.o -L/opt/rcc/gnu/lib64 -lnetcdf

## You can now use the following executable in your Slurm submit script
./simple_xy_wr.x

NetCDF is also available for the Intel compiler. Link and include a different path using the following commands:

-I/opt/rcc/intel/include
-L/opt/rcc/intel/lib64

In-Depth

For a more in-depth discussion, please refer to the NetCDF tutorial on the UCAR website.