[Users] Problems with output in CarpetX

[Javiera Hernández Morales]

Hi all,

I am starting to learn the use of CarpetX and for this I started using the WaveToyX thorn. I wanted to ask for guidance for three problems that I have encountered so far, all of them related to the output data:

1) I wanted to get 3D data, for example in .tsv format. Here I realised that there is an ambiguous definition in the documentation for the parameter “out_tsv”, which in section 12.1 it says to control TSV output and have default value “yes”, but in section 14 it says to control the 3D output in TSV and have default value “no”. This last behaviour is the one that I encounter when running the parfiles. 

2) When I set up “out_tsv" to “yes” and “out_tsv_every” to a number, for example = 16, I get 1D output every 16 iterations, but 3D output in every iteration, therefore I suspect that “out_tsv_every” is only controlling the frequency of the 1D output, and I cannot find a way to control the frequency of 3D output.

3) I attempted to output data in HDF5 format but I did not succeed. I first set the parameter “openpmd_format” to “HDF5” and also set “out_openpmd_vars” to the variables that I wanted, but I got an error in the first iteration:

INFO (CarpetX): OutputGH: iteration 0, time 0.000000, run time 1 s
INFO (CarpetX): OutputOpenPMD...
INFO (CarpetX): Creating openPMD object...
INFO (CarpetX):   options: 
  {
    "adios2": {
      "dataset": {
        "operators": [
        ]
      }
    }
  }

[et-juphub:699479] *** An error occurred in MPI_Comm_create_keyval
[et-juphub:699479] *** reported by process [211877889,2]
[et-juphub:699479] *** on communicator MPI_COMM_WORLD
[et-juphub:699479] *** MPI_ERR_ARG: invalid argument of some other kind
[et-juphub:699479] *** MPI_ERRORS_ARE_FATAL (processes in this communicator will now abort,
[et-juphub:699479] ***    and potentially your MPI job)
[et-juphub:699473] PMIX ERROR: UNREACHABLE in file ../../../src/server/pmix_server.c at line 2193
[et-juphub:699473] 3 more processes have sent help message help-mpi-errors.txt / mpi_errors_are_fatal
[et-juphub:699473] Set MCA parameter "orte_base_help_aggregate" to 0 to see all help / error messages
Simfactory Done at date: Thu 26 Jun 2025 09:19:08 AM UTC
And I did not know how to move on from there.
I am working on the ETK Tutorial server, in case that is important.
Thanks in advance to anyone who took the time to read until here, I will be looking forward to any piece of advice :)
Best,
Javiera H.M. 
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