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'Expected One Child' error while creating new case

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'Expected One Child' error while creating new case

What I have done:

1) Cloning the git repository: git clone my_cesm_sandbox

2) Ran git tag

3) Ran git checkout cesm2_2_alpha02b

4) Ran ./manage_externals/checkout_externals

5) Ran cd my_cesm_sandbox/cime/scripts

6) Ran ./create_newcase --case case1 --compset B1850 --res f09_g17_gl4

Got the following output with error:


Compset specification file is /home/stardust/cesm/cesm-new1/my_cesm_sandbox/cime/../cime_config/config_compsets.xml

Compset forcing is 1850

Com forcing is Biogeochemistry intercomponent  with diagnostic CO2

ATM component is CAM cam6 physics:

LND component is clm5.0:BGC (vert. resol. CN and methane) with prognostic crop:

ICE component is Sea ICE (cice) model version 5

OCN component is POP2 Ecosystem

ROF component is MOSART: MOdel for Scale Adaptive River Transport

GLC component is cism2 (default, higher-order, can run in parallel):cism ice evolution turned off (this is the standard configuration unless you're explicitly interested in ice evolution):

WAV component is Wave Watch

ESP component is 

Pes     specification file is /home/stardust/cesm/cesm-new1/my_cesm_sandbox/cime/../cime_config/config_pes.xml

Compset specific settings: name is RUN_STARTDATE and value is 0001-01-01

Compset specific settings: name is RUN_REFDATE and value is 0130-01-01

Compset specific settings: name is RUN_TYPE and value is hybrid

Compset specific settings: name is RUN_REFCASE and value is b.e20.B1850.f09_g17.pi_control.all.297

Compset specific settings: name is RUN_REFDIR and value is cesm2_init

Machine is stardust-cosmos

Pes setting: grid match    is a%0.9x1.25.+l%0.9x1.25.+oi%gx1 

Pes setting: grid          is a%0.9x1.25_l%0.9x1.25_oi%gx1v7_r%r05_g%gland4_w%ww3a_m%gx1v7 

Pes setting: compset       is 1850_CAM60_CLM50%BGC-CROP_CICE_POP2%ECO_MOSART_CISM2%NOEVOLVE_WW3_BGC%BDRD 

Pes setting: tasks       is {'NTASKS_ATM': -8, 'NTASKS_LND': -4, 'NTASKS_ROF': -4, 'NTASKS_ICE': -4, 'NTASKS_OCN': -1, 'NTASKS_GLC': -8, 'NTASKS_WAV': -8, 'NTASKS_CPL': -8} 

Pes setting: threads     is {'NTHRDS_ATM': 1, 'NTHRDS_LND': 1, 'NTHRDS_ROF': 1, 'NTHRDS_ICE': 1, 'NTHRDS_OCN': 1, 'NTHRDS_GLC': 1, 'NTHRDS_WAV': 1, 'NTHRDS_CPL': 1} 

Pes setting: rootpe      is {'ROOTPE_ATM': 0, 'ROOTPE_LND': 0, 'ROOTPE_ROF': 0, 'ROOTPE_ICE': -4, 'ROOTPE_OCN': -8, 'ROOTPE_GLC': 0, 'ROOTPE_WAV': 0, 'ROOTPE_CPL': 0} 

Pes setting: pstrid      is {} 

Pes other settings: {}

Pes comments: none


 Grid is: a%0.9x1.25_l%0.9x1.25_oi%gx1v7_r%r05_g%gland4_w%ww3a_m%gx1v7 

 Components in compset are: ['cam', 'clm', 'cice', 'pop', 'mosart', 'cism', 'ww3', 'sesp', 'drv', 'dart'] 


This is a CESM scientifically supported compset at this resolution.


Using project from config_machines.xml: vulcan

Using charge_account from config_machines.xml: vulcan

cesm model version found: cesm2.1-alpha

Batch_system_type is slurm


ERROR: Expected one child

I am running ubuntu system with gnu and intel compilers. mpirun is available.

Please help me out with this error. What does 'Expected one child' error mean? Have been stuck with this for a long time. Any help is appreciated.

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