Changes between Version 6 and Version 7 of PDAF_debugging


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Timestamp:
Feb 20, 2023, 5:54:54 PM (4 years ago)
Author:
lnerger
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  • PDAF_debugging

    v6 v7  
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    74 == Activating Debugging Output ==
    75 
    76 The debug output prints information on configuration parameter values inside PDAF, dimensions and the values of actual arrays inside PDAF. Here, it depends for which routine or part of a data assimilation method the debugging is activated. We discuss a few options here for ensemble filters based on output obtain when activating debug output in the case `/tutorial/offline_2D_serial`. In addition, we discuss the debug output obtained for 3D-Var based on output obtain when activating debug output in the case `/tutorial/3dvar/offline_2D_serial`
     74== Understanding the Debugging Output ==
     75
     76The debug output prints information on configuration parameter values inside PDAF, dimensions and the values of actual arrays inside PDAF. Here, it depends for which routine or part of a data assimilation method the debugging is activated. We discuss a few options here for ensemble filters based on output obtain when activating debug output in the case `/tutorial/offline_2D_serial`. In addition, we discuss the debug output obtained for 3D-Var based on output obtain when activating debug output in the case `/tutorial/3dvar/offline_2D_serial`. WE discuss the debug output for an implementation using PDAF-OMI. However, its use is analogous for the case of the implementation not using PDAF-OMI.
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    7878Generally all debug output lines start with `PDAF-debug`, thus one can use `grep PDAF-debug` when running the data assimilation or on a text file containing the output to see only the debug output. Each line also shows the name of the PDAF routine from which the debug output is written.
    … …  
    8080Here we discuss some aspects of the debug output from different typical cases:
    8181- [wiki:PDAF_debugging#DebugoutputfromPDAF_init Debug output from PDAF_init]
    82 - [wiki:PDAF_debugging#DebugoutputfromPDAFomi_assimilate_global Debug output from PDAFomi_assimilate_global]
    83 - [wiki:PDAF_debugging#DebugoutputfromPDAFomi_assimilate_local Debug output from PDAFomi_assimilate_local]
     82- [wiki:PDAF_debugging#Debugoutputforglobalensemblefilters Debug output from for global ensemble filters]
     83- [wiki:PDAF_debugging#Debugoutputforlocalensemblefilters Debug output from for local ensemble filters]
    8484- [wiki:PDAF_debugging#Debugoutputfor3D-Var Debug output for 3D-Var]
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    … …  
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    112 === Debug output from `PDAFomi_assimilate_global` ===
     112=== Debug output for global ensemble filters ===
    113113
    114114To demonstrate the typical output from a global ensemble Kalman filter we use the debug output from the ESTKF.
    … …  
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    181 === Debug output from `PDAFomi_assimilate_local` ===
     181=== Debug output for local ensemble filters ===
    182182
    183183To demonstrate the typical output from a local ensemble Kalman filter we use the debug output from the LESTKF. In this case we do not activate the PDAF debug output in assimilation_pdaf_offline.F90. Instead we activate the debug output in `init_dim_l_pdaf` for domain_p=4 as shown in the example on activating debug output above (we omit the check for `mype_filter` since the example is run using a single process). Then we run `./PDAF_offline -dim_ens 3 -filtertype 7 -cradius 4|grep debug`. In this case we obtain 40 lines of output.