Guidance Needed: CLM Coupling Issue Despite Successful Spinup/Parking Lot Runs

[Kelli Rajani]

Hello everyone, 

I'm encountering a segmentation fault when running my ParFlow-CLM coupled simulation, though my parking lot and spinup tests (using the same solid file) complete successfully. This suggests the issue is specific to CLM integration.

Details:

• Solid File: Works perfectly for non-CLM runs (attached: solidv2.txt)

• Error: Segmentation fault during CLM initialization (MPI signal 11)

• Environment: ParFlow 3.10.0, CLM coupling enabled

• Attempted Fixes: Adjusted NZ layers, VariableDz settings, and CLM soil layer configurations

Request: Could you help me identify why the solid file works for standalone ParFlow but fails with CLM? I’m happy to share:

1. The solid file (solidv2.txt)

2. My run scripts (TCL/Python)

3. Full error logs
   Thank you for your support!
   Hoping for a positive response 
   
   https://drive.google.com/drive/folders/11cFr86fkwi_4InEdh4xFF8Y0pfnlGfCc?usp=sharing
   
   

[Kelli Rajani]

Hello everyone,

I appreciate your time and support. I’m still facing the segmentation fault issue and waiting for your insights to resolve it. Please let me know if you need any additional details.

Looking forward to your help!