Compilation and Installation

Procedure

1. Use PuTTY to log in to the server as the root user.
2. Decompress the WRF installation package.

   tar -vxf WRF-4.2.tar.gz

3. Go to the directory generated after the decompression.

   cd WRF-4.2

4. Modify the arch/configure.defaults file.
   1. Open the arch/configure.defaults file.

      vi arch/configure.defaults

   2. Press i to enter the edit mode and add the following content to the end of line 1978:

      ################################################## #########
      #ARCH   Linux   aarch64,clang HYPERMPI#serial smpar dmpar dm+sm
      DESCRIPTION     =       CLANG ($SFC/$SCC)
      DMPARALLEL      =        1
      OMPCPP          =        -D_OPENMP
      OMP             =        -fopenmp
      OMPCC           =        -fopenmp
      SFC             =       flang
      SCC             =       clang
      CCOMP           =       clang
      DM_FC           =       mpif90 -f90=$(SFC)
      DM_CC           =       mpicc -cc=$(SCC) -DMPI2_SUPPORT
      FC              =       CONFIGURE_FC
      CC              =       CONFIGURE_CC
      LD              =       $(FC)
      RWORDSIZE       =       CONFIGURE_RWORDSIZE
      PROMOTION       =       #-fdefault-real-8
      ARCH_LOCAL      =       -DNONSTANDARD_SYSTEM_SUBR  -DWRF_USE_CLM
      CFLAGS_LOCAL    =      -mcpu=native -w -O3 -c -march=armv8.2-a
      LDFLAGS_LOCAL   =
      CPLUSPLUSLIB    =
      ESMF_LDFLAG     =      $(CPLUSPLUSLIB)
      FCOPTIM         =       -O3 -funroll-loops -march=armv8.2-a
      FCREDUCEDOPT    =       $(FCOPTIM)
      FCNOOPT         =       -O0
      FCDEBUG         =      -g # -fbacktrace -ggdb-fcheck=bounds,do,mem,pointer -ffpe-trap=invalid,zero,overflow
      FORMAT_FIXED    =       -ffixed-form
      FORMAT_FREE     =       -ffree-form -ffree-line-length-0
      FCSUFFIX        =
      BYTESWAPIO      =       -fconvert=big-endian
      FCBASEOPTS_NO_G =       -w $(FORMAT_FREE) $(BYTESWAPIO)
      FCBASEOPTS      =       -mcpu=native $(OMP) $(FCBASEOPTS_NO_G)
      MODULE_SRCH_FLAG =
      TRADFLAG        =      -traditional
      CPP             =      /lib/cpp -P
      AR              =      ar
      ARFLAGS         =      ru
      M4              =      m4 -G
      RANLIB          =      ranlib
      RLFLAGS         =
      CC_TOOLS        =      $(SCC)

      

      After performing 4.a, press Esc, type :set nu, and press Enter to display the line number.

   3. Press Esc, type :wq!, and press Enter to save the file and exit.
5. Modify the phys/module_mp_SBM_polar_radar.F file.
   1. Open the phys/module_mp_SBM_polar_radar.F file.

      vi phys/module_mp_SBM_polar_radar.F

   2. Press i to go to the edit mode and add the following content to line 452 of the file:

      external :: derf

      

      After performing 5.a, press Esc, type :set nu, and press Enter to display the line number.

   3. Press Esc, type :wq!, and press Enter to save the file and exit.
6. Perform the compilation and installation.

   echo 4 | ./configure
   ./compile  em_real 2>&1 | tee -a compile.log

   If the following information is displayed, the WRF program is installed successfully.