README.md

Elmer/Ice dummy

This code demonstrates how the basic YAC calls could be implemented in an Elmer/Ice component.

Building

In root directory:

make

This will download a paritioned MESH covering Greenland and build the Elmer/Ice and ICON dummy.

Usage

In root directory:

mpirun \
  -n 1 ./src/icon_dummy.x \
    ./mesh/icon_grid_0054_R02B08_G.nc \
    ./data/mbe3064_atm_elmer_monmean_1979.nc \
    ./data/varlist_elmerfile : \
  -n $N ./src/elmer_dummy.x \
    ./mesh/MESH/partitioning.128 \
    128 \
    ./config/coupling.yaml

(where $N is the number of Elmer/Ice-dummy processes)

The single ICON process will read in its grid and register all available variables in YAC. During the timestepping it will provide all fields that are requested from the Elmer/Ice-dummy component (data is available at 6h intervals).

All Elmer/Ice-dummy processes will read in a part of the mesh and execute all YAC calls required for coupling. During the timestepping, this component will receive the requested fields from the ICON-dummy component at the coupling intervals defined in the coupling.yaml.