Page Comparison

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1. TempestRemap
   

   
   a. Clone repository: `git clone https://github.com/ClimateGlobalChange/tempestremap.git tempestremap`
   b. Create build dir: cd tempestremap && mkdir build
   c. Generate configure script: autoreconf -fi
   d. Go to build dir: cd build
   e. Configure: ../configure --prefix=$INSTALL_PREFIX/tempestremap --with-netcdf=$NETCDF_DIR --with-hdf5=$HDF5_DIR CC=$CC CXX=$CXX CXXFLAGS="-g -O2"
   f. Build and install: make all && make install
   
   At the end of this series of steps, the TempestRemap libraries and tools (GenerateCSMesh, GenerateICOMesh, GenerateOverlapMesh, GenerateOfflineMap among others) will be installed in $INSTALL_PREFIX/tempestremap directory.
   
   
2. MOAB
   
   a. Clone repository:  git `git clone https://bitbucket.org/fathomteam/moab.git moab moab` 
   b. Checkout feature branch: git checkout vijaysm/tempest-master-API
   c. Create build dir: cd moab && mkdir build
   cd. Generate configure script: autoreconf -fi
   de. Go to build dir: cd build
   ef. Configure: ../configure --prefix=$INSTALL_PREFIX/moab --with-mpi --with-tempestremap=$INSTALL_PREFIX/tempestremap --with-netcdf=$NETCDF_DIR --with-hdf5=$HDF5_DIR CC=$CC FC=$FC F77=$FC CXX=$CXX CXXFLAGS="-g -O2" --with-eigen3=$INSTALL_PREFIX/eigen3
   fg. Build and install: make all && make install
   
   If steps (a)-(fg) pass successfully, the MOAB libraries and tools, along with interfaces for TempestRemap will be installed in $INSTALL_PREFIX/moab directory. The offline remapping weight computation tool, mbtempest, will also be installed during this process and can then be used standalone to generate the weight files as needed.

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The mbtempest tool can be used to generate CS (cubed-sphere), RLL (lat/lon), ICO (triangular) and polygonal (MPAS-like) meshes through appropriate invocation with the -t [--type] argument in combination with -r [--res] option. Note that these mesh generation workflows are only run in serial and a handoff to TempestRemap through its public API is done internally. Some examples for these runs are provided below.

Cubed-Sphere meshes

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Generating intersection meshes

Run Once we have a source and target grid that is to be used to compute the remapping weights, mbtempest can be used in a similar fashion to GenerateOverlapMesh/GenerateOfflineMap in TempestRemap or the ESMF_RegridWeightGen tool with ESMF to create the field projection weights. Note that unlike ESMF, there is no need to create a dual of the higher-order Spectral Element (SE) mesh using the TempestRemap workflow. Some examples with different options are provided below.

1. mpiexec -n 1 tools/mbtempest -t 5 -l outputCSMesh.exo -l outputICOMesh.exo -f moab_mbtempest_remap_csico_fvfv.h5m -i moab_intx_file2.exo -w 
2. mpiexec -n 2 tools/mbtempest -t 5 -l $MOAB_SRC_DIR/MeshFiles/unittest/wholeATM_T.h5m -l $MOAB_SRC_DIR/MeshFiles/unittest/recMeshOcn.h5m  -f moab_mbtempest_remap_fvfv.h5m -i moab_intx_file2.exo -w -m fv -m fv 
3. mpiexec -n 4 tools/mbtempest -t 5 -l $MOAB_SRC_DIR/MeshFiles/unittest/wholeATM_T.h5m -l $MOAB_SRC_DIR/MeshFiles/unittest/recMeshOcn.h5m  -f moab_mbtempest_remap_sefv.h5m -i moab_intx_file2.exo -w -m cgll -m fv -o 4 -o 1 -g GLOBAL_DOFS -g GLOBAL_ID