wrf-wrf_wps

Versions Currently Available

• 3.5.1-em_real-basic_nesting-dm+sm-cray

Default Version History

----------- Module Specific Help for 'wrf-wrf_wps/3.5.1-em_real-basic_nesting-dm+sm-cray' ---------------------------

WRF and WPS
===========

This module provides the WRFV3 and WPS packages of the Weather
Research and Forecasting model.  This is version 3.5.1, with the
patches up to February 2014 applied.

See the online manual

http://www.mmm.ucar.edu/wrf/users/docs/user_guide_V3/contents.html

for more information about WRF.

The ARW model is provided (em_real) with basic nesting and distributed
memory (MPI) + shared memory (OpenMP) parallelism.  WPS has been built
with GRIB2 support, and with distributed memory parallism.  Both
packages have been compiled with the Cray compiler, and will run on
the compute nodes only.

Run all of the WPS and WRF executables with aprun, e.g.

aprun -n 8 geogrid.exe
aprun -n 1 ungrib.exe
aprun -n 8 metgrid.exe
aprun -n 8 real.exe
aprun -n 24 wrf.exe

and set the OMP_NUM_THREADS variable to 1 if you are not wanting to
use multiple OpenMP threads.  You should experiment with combinations
of OMP_NUM_THREADS and the aprun '-n', '-N' and '-d' options to find
an optimum for your particular simulation.  ungrib.exe is serial, and
requires

aprun -n 1 ungrib.exe

The packages are in

$WRF_WRF_WPS_DIR/WRFV3
$WRF_WRF_WPS_DIR/WPS

with the executables in

$WRF_WRF_WPS_DIR/WRFV3/run
$WRF_WRF_WPS_DIR/WPS

You may have scripts that are written to run in the WRFV3 directory,
and use relative pathnames (e.g. ../WPS/geogrid.exe).  These scripts
will need to be modified to use the variable $WRF_WRF_WPS_DIR (see
below for an example).


Geographical data
-----------------

The geographical data is in

$WRF_GEOG

Note that this data has the updated Iceland land use files.  The old
Iceland files are in the copy in $WRF_GEOG-unupdated_Iceland_LU


Utilities
---------

Only one WRF utility has been provided, wrfout_to_cf.ncl, in

$WRF_WRF_WPS_DIR/util


Simple example
--------------

The default test case from the WRF online tutorial
(http://www.mmm.ucar.edu/wrf/OnLineTutorial/CASES/JAN00/index.html) is
available in

$WRF_WRF_WPS_DIR/online_tutorial_test

You can copy this to your own /work directory and test WRF and WPS, as
follows (you will need an X11 connection to see the graphical output):

qsub -IVXl select=1,walltime=0:10:0 -A 
export OMP_NUM_THREADS=1

# cd to your /work/..../online_tutorial_test directory

# Load the module
module load wrf-wrf_wps

# Test the grid with
module load ncl
ncl $WRF_WRF_WPS_DIR/WPS/util/plotgrids.ncl
module unload ncl
# (click on the image to exit ncl)

# geogrid
ln -sf $WRF_WRF_WPS_DIR/WPS/geogrid .
aprun -n 8 $WRF_WRF_WPS_DIR/WPS/geogrid.exe

$WRF_WRF_WPS_DIR/WPS/util/g1print.exe JAN00/2000012412.AWIPSF

# ungrib
ln -sf $WRF_WRF_WPS_DIR/WPS/ungrib/Variable_Tables/Vtable.AWIP Vtable
$WRF_WRF_WPS_DIR/WPS/link_grib.csh JAN00/2000012
aprun -n 1 $WRF_WRF_WPS_DIR/WPS/ungrib.exe >& ungrib_data.log 
$WRF_WRF_WPS_DIR/WPS/util/rd_intermediate.exe FILE:2000-01-24_12

# metgrid
ln -sf $WRF_WRF_WPS_DIR/WPS/metgrid .
aprun -n 8 $WRF_WRF_WPS_DIR/WPS/metgrid.exe
module load cray-netcdf
ncdump -h met_em.d01.2000-01-24_12:00:00.nc
module unload cray-netcdf

# real
mkdir em_real
cd em_real
ln -sf $WRF_WRF_WPS_DIR/WRFV3/test/em_real/* .
ln -sf ../met_em.d01.2000-01* .
aprun -n 8 real.exe

# wrf
aprun -n 24 wrf.exe

module load cray-netcdf
ncdump -h wrfout_d01_2000-01-24_12:00:00
ncdump -v Times wrfout_d01_2000-01-24_12:00:00 
module unload cray-netcdf

module load ncview
ncview wrfout_d01_2000-01-24_12:00:00
module unload ncview


Maintained by: Mark Filipiak, EPCC