About the derivation and work flow of the algorithm, see comments in enkf.f
How to compile:
I. using PGI compiler
---------------------
Make sure you have pgi compiler, mpich and netcdf correctly configured in your environment.
We recommend you having the mpich platform and netcdf compiled by pgi as well.
The environment variables PATH should have the search paths of PGI, NETCDF, and MPICH binaries.
and LD_LIBRARY_PATH should have the search paths of PGI, NETCDF, and MPICH shared libraries.
The following is a sample .cshrc file configured for using pgi, mvapich2 and netcdf (on mc1.met.psu.edu):
setenv PGI /usr/global/pgi
setenv PATH $PGI/linux86-64/10.6/bin:$PATH
setenv MPICH /usr/mpi/pgi/mvapich2-1.5.1
setenv PATH $MPICH/bin:$PATH
setenv NETCDF /usr/global/netcdf
setenv PATH $NETCDF/bin:$PATH
setenv LD_LIBRARY_PATH $NETCDF/lib:$LD_LIBRARY_PATH
To compile:
cd src
cp Makefile.pgi Makefile
make clean
make
II. using Intel compiler
------------------------
Similar with PGI compiler, the environment should be correctly configured for intel, mpich and netcdf.
The following is a sample .bashrc file configured for using intel, mvapich2 and netcdf (on stampede.tacc.utexas.edu):
export NETCDF="/opt/apps/intel13/netcdf/3.6.3"
export PATH="$NETCDF/bin:$PATH"
export LD_LIBRARY_PATH="$NETCDF/lib:$LD_LIBRARY_PATH"
export INTEL="/opt/apps/intel/13/composer_xe_2013.1.117"
export PATH="$INTEL/bin/intel64:$PATH"
export LD_LIBRARY_PATH="$INTEL/tbb/lib/intel64:$INTEL/mkl/lib/intel64:$INTEL/ipp/lib/intel64:$INTEL/mpirt/lib/intel64:/opt/intel/mic/myo/lib:/opt/intel/mic/coi/host-linux-release/lib:$INTEL/compiler/lib/intel64:$LD_LIBRARY_PATH"
export MPICH="/opt/apps/intel13/mvapich2/1.9"
export PATH="$MPICH/bin:$PATH"
export LD_LIBRARY_PATH="$MPICH/lib:$MPICH/lib/shared:$LD_LIBRARY_PATH"
To compile:
cd src
cp Makefile.intel Makefile
make clean
make
Executables:
------------
If build is successful, you can find the following executables:
enkf.mpi - the main program of EnKF
Also some utility programs:
enkf_gfs_hybrid_inflation.exe
replace_perturbationmean_by_initial.exe
replace_geo_by_initial.exe
replace_xfmean_with_gfs.exe
soairborne_to_3dvar.exe
so_to_3dvar.exe
If you only need enkf.mpi, simply use "make clean; make enkf.mpi"