Network Common Data Form
Documentation
NetCDF is a suite of libraries for system and machine independent generation, access and exchange of array oriented scientific data. The NetCDF libraries contain the interface for C, FORTRAN77, FORTRAN90 and C++. The libraries come with some binaries to access, and reformat netcdf-formatted data.
Visit the unidata netcdf web page for detailed documention.
Versions
The NetCDF library is available for several compilers. It is linked dynamically to the threadsafe hdf5- and szip libraries build with the same compiler.
| Version | compiler | hdf5 | Serial/Parallel | Remarks |
|---|---|---|---|---|
| 4.7.3 | gcc/4.5.8 | 1.10.5 | serial | fortran-4.5.2, cxx-4.3.1 |
| gcc/7 | 1.10.5 | serial | fortran-4.5.2, cxx-4.3.1 | |
| gcc/8.3.0 | 1.10.5 | serial | fortran-4.5.2, cxx-4.3.1 | |
| intel/18.0.6 | 1.10.5 | serial | fortran-4.5.2, cxx-4.3.1 | |
| intel/18.0.6 , impi/2018.5 | 1.10.5 (impi) | parallel | fortran-4.5.2, cxx-4.3.1 | |
| 4.7.4 | gcc/8.3.0 | 1.12.0 | serial | fortran-4.5.3, cxx-4.3.1 |
| gcc/9.2.0, opmi/3.1.5 | 1.10.6 (ompi) | parallel | fortran-4.5.3, cxx-4.3.1 | |
| intel/18.0.6, opmi/3.1.6 | 1.10.6 (ompi) | parallel | fortran-4.5.3, cxx-4.3.1 | |
| intel/19.0.5 | 1.12.0 | serial | fortran-4.5.2, cxx-4.3.1 |
Modulefiles and environmental variables
Loading a NetCDF modulefile extends PATH with the path to the NetCDF binaries. This includes nc_config and nf_config, which can be used to gain information on the path to include files and libraries in compiler scripts and makefiles. Use
module show netcdf/<version>
module help netcdf/<version>
to investigate details on exported environment variables.
LD_RUN_PATH is extended when a netcdf-module is loaded. It can be used to define rpath in the binarues.
The netcdf-modules are not needed to run programs linked to a netcdf library!
Example to compile smp-programs using the netcdf library
Here we demonstrate the usage of environmental variables to find the netcdf - include files and to link the netcdf libraries.
Installing netcdf at HLRN
We discuss the installation of serial and parallel netcdf at HLRN