NEMS configuration generation

Project description

NEMSpy

NEMSpy generates configuration files (nems.configure, config.rc, model_configure, atm_namelist.rc) for coupled modeling applications run with a compiled NEMS binary (not included).

NEMS implements the National Unified Operational Prediction Capability (NUOPC), and configuration files built for NEMS will also work for most NUOPC applications.

Usage:

from datetime import datetime, timedelta

from nemspy import ModelingSystem
from nemspy.model import (
    ADCIRCEntry,
    AtmosphericMeshEntry,
    WaveMeshEntry,
)

# model run time
start_time = datetime(2020, 6, 1)
duration = timedelta(days=1)

# returning interval of main run sequence
interval = timedelta(hours=1)

# directory to which configuration files should be written
output_directory = '~/nems_configuration/'

# model entries
ocean_model = ADCIRCEntry(processors=11, verbose=True, DumpFields=False)
atmospheric_mesh = AtmosphericMeshEntry('~/wind_atm_fin_ch_time_vec.nc')
wave_mesh = WaveMeshEntry('~/ww3.Constant.20151214_sxy_ike_date.nc')

# instantiate model system with model entries
nems = ModelingSystem(
    start_time, duration, interval, ocn=ocean_model, atm=atmospheric_mesh, wav=wave_mesh,
)

# form connections between models
nems.connect('ATM', 'OCN')
nems.connect('WAV', 'OCN')

# define execution order
nems.sequence = [
    'ATM -> OCN',
    'WAV -> OCN',
    'ATM',
    'WAV',
    'OCN',
]

# write configuration files to the given directory
nems.write(output_directory, overwrite=True)

Output:

nems.configure

#############################################
####  NEMS Run-Time Configuration File  #####
#############################################

# EARTH #
EARTH_component_list: ATM WAV OCN
EARTH_attributes::
  Verbosity = min
::

# ATM #
ATM_model:                      atmesh
ATM_petlist_bounds:             0 0
ATM_attributes::
  Verbosity = min
::

# WAV #
WAV_model:                      ww3data
WAV_petlist_bounds:             1 1
WAV_attributes::
  Verbosity = min
::

# OCN #
OCN_model:                      adcirc
OCN_petlist_bounds:             2 12
OCN_attributes::
  Verbosity = max
  DumpFields = false
::

# Run Sequence #
runSeq::
  @3600
    ATM -> OCN   :remapMethod=redist
    WAV -> OCN   :remapMethod=redist
    ATM
    WAV
    OCN
  @
::

config.rc

 atm_dir: ~
 atm_nam: wind_atm_fin_ch_time_vec.nc
 wav_dir: ~
 wav_nam: ww3.Constant.20151214_sxy_ike_date.nc

model_configure

total_member:            1
print_esmf:              .true.
namelist:                atm_namelist
PE_MEMBER01:             13
start_year:              2020
start_month:             6
start_day:               1
start_hour:              0
start_minute:            0
start_second:            0
nhours_fcst:             24
RUN_CONTINUE:            .false.
ENS_SPS:                 .false.

Project details

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Mar 29, 2022

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