GSI/EnKF WRFIO library

Build under the hpc-stack umbrella

This can be built under the NOAA hpc-stack (https://github.com/NOAA-EMC/hpc-stack).

• If the only goal is to build GSI/EnKF, one can clone the hpc-stack code from this fork https://github.com/comgsi/hpc-stack where customized config_comgsi.sh and stack_comgsi.sh are provided to build only those libraries required by GSI/EnKF.

• To use the authoritative NOAA hpc-stack and add the gsiwrfio libary, you can follow changes shown here https://github.com/comgsi/hpc-stack/compare/f53255a..a639980

Once completed, you can follow the hpc-stack practices to use module load gsiwrfio/1.0.0 to set gsiwrfio related environmental variables.

Build independently

You can also elect to build the gsiwrfio library independently as follows and set the GSIWRFIO_LIB environmental variable to let GSI/EnKF know where to find the gsiwrfio library.

git clone https://github.com/comgsi/gsiwrfio.git
(... make sure your environment has a valid compiler, mpi and netcdf ...)
cd gsiwrfio
mkdir build
cd build
cmake ..
make -j2

Once completed, you will find libgsiwrfio.a under build/src/

Run the following command to set the GSIWRFIO_LIB environmental variable before build GSI/EnKF:

export GSIWRFIO_LIB="/path/to/libgsiwrfio.a" # use setenv for csh-type shells

NOTE: You will need latest GSI/EnKF code (after 05/16/2021) to use the gsiwrfio library.