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EarthVM

EarthVM is a lightweight parallel framework for running and coupling weather, ocean, and wave models.

Getting started

Set up environment variables

Set these environment variables before building ESMF:

export ESMF_OS=Linux
export ESMF_DIR=$(pwd)/esmf-8.0.0
export ESMF_COMPILER=gfortran # change to other compiler if needed
export ESMF_ABI=64
export ESMF_BOPT=O
export ESMF_COMM=openmpi # change to other MPI library if needed
export ESMF_PTHREADS=OFF
export ESMF_OPENMP=OFF

Download and build ESMF

This will download esmf-8.0.0 and print the information about build parameters:

make download_esmf
cd esmf
make info 
make
make check

Build WRF

cd wrf-4.2-1
./configure
./compile em_real

Download and build UMWM

make download_umwm
make umwm

Build HYCOM

make hycom

Build EarthVM

make

Run tests

make test

Notes

  • Building with Intel compilers requires ESMF <= v8.0.0 due to unsupported C++ features.
  • Building WRF on ppc64 with at-12.0 (IBM Advanced Toolchain) requires passing -Uvector to cpp.
  • To build ESMF shared libraries with XL on IBM Power9, the following must be added to build_config/Linux.xlf.default/build_rules.mk:
ESMF_SL_LIBS_TO_MAKE = libesmf
ESMF_SL_SUFFIX = so
ESMF_SL_LIBLINKER = mpicxx
ESMF_SL_LIBOPTS = -qpic -shared
ESMF_SL_LIBLIBS =

Sample model dataset

You can download a sample output of a high-resolution EarthVM simulation of Hurricane Dorian (2019) from this Zenodo repository.

Acknowledgements

EarthVM development was supported by the National Science Foundation awards 1745384 and 2006295.