Get the WRFDA zipped tar file from /wrfhelp/SOURCE_CODE
cd /data1/${USER}/DA
cp /wrfhelp/SOURCE_CODE/WRFDA_V3.5.tar.gz .
Unzip and untar the file:
tar -zxvf WRFDA_V3.5.tar.gz
To reduce compilation time you can compile in parallel (this is a separate process from deciding to run WRFDA in serial or parallel mode). You can do this by setting the environment variable J="-j #", where "#" is the number of processors.
setenv J "-j 6"
Configure and compile
cd /data1/${USER}/DA/WRFDA
./clean -a
setenv BUFR 1
Only one radiative transfer model is necessary, but WRFDA can be compiled with both, so set the CRTM and/or RTTOV environment variables as below
setenv CRTM 1
setenv RTTOV /wrfhelp/WRFDA/external/rttov10/pgi
./configure wrfda
Choose 17 for pgf90/pgcc, dmpar
./compile all_wrfvar >&! compile_3dvar.log &
WRFPLUS contains both the non-linear and the tangent-linear/adjoint WRF code. It is needed for 4DVAR and Forecast Sensitivity to Observations (FSO).
Get the WRFPLUS zipped tar file from /wrfhelp/SOURCE_CODE
cd /data1/$USER/DA
cp /wrfhelp/SOURCE_CODE/WRFPLUS_V3.5.tar.gz .
Set "J" to compile in parallel
setenv J "-j 6"
Unzip and untar the file
tar -zxvf WRFPLUS_V3.5.tar.gz
Configure
cd /data1/$USER/DA/WRFPLUS
./configure wrfplus
Choose 10 for pgf90/pgcc, dmpar
IMPORTANT NOTE FOR TUTORIAL ATTENDEES: On the classrooom computers, the PGI compiler has a bug which can cause problems with WRFPLUS compilation. The following steps will ensure successful compilation of WRFPLUS:
1. Manually set the machine to use PGI version 13.6 with the following environment variables:
setenv PGI /usr/local/pgi-13.6
setenv PATH $PGI/bin:/usr/local/mpich-3.0.4-pgi13.6/bin:$PATH
2. Manually edit the "configure.wrf" file, changing the following line:
FCOPTIM = -O3 #-fastsse ...
to
FCOPTIM = -O1 #-fastsse ...
Note that this is the letter "O", not a zero, following the dash
Compile WRFPLUS
./compile em_real >&! compile_wrfplus.log &
To compile WRFDA for 4DVAR, you should have already compiled WRFPLUS (see above).
Get the WRFDA zipped tar file from /wrfhelp/SOURCE_CODE
cd /data1/$USER/DA
cp /wrfhelp/SOURCE_CODE/WRFDA_V3.5.tar.gz .
Unzip and untar the file
tar -zxvf WRFDA_V3.5.tar.gz
Configure and Compile
cd /data1/${USER}/DA/WRFDA
./clean -a
Only one radiative transfer model is necessary, but WRFDA can be compiled with both, so set the CRTM and/or RTTOV environment variables as below
setenv BUFR 1
setenv CRTM 1
setenv RTTOV /wrfhelp/WRFDA/external/rttov10/pgi
Set the environment variable WRFPLUS_DIR to point to the WRFPLUS build you just installed
setenv WRFPLUS_DIR /data1/$USER/DA/WRFPLUS
./configure 4dvar
Choose 8 for PGI/gcc, dmpar
./compile all_wrfvar >&! make.log &
