[petsc-users] How to pick up MPI implementation in PETSc

[Barry Smith]

  Matt,

     Don't pickle them up just json them up and they will be portable to all tools.

  Barry


> On Jan 9, 2025, at 2:15 PM, Matthew Knepley <knepley at gmail.com> wrote:
> 
> On Thu, Jan 9, 2025 at 1:44 PM Mark Adams <mfadams at lbl.gov <mailto:mfadams at lbl.gov>> wrote:
>> I would probably add: 'grep Implementation:  ${PETSC_DIR}/${PETSC_ARCH}/llib/petsc/conf/configure.log'
>> to your run script.
>> Or something that greps on MPI: and prints the next 4 lines.
> 
> Hi Randy,
> 
> PETSc gets this info from
> 
>   ${PETSC_ARCH}/lib/petsc/conf/RDict.db
> 
> which is a pickled Python dictionary of all the configure output. I wrote an example
> of pulling that data out, and _someone_ deleted it:
> 
>   https://urldefense.us/v3/__https://gitlab.com/petsc/petsc/-/blob/v3.0.0/bin/configVars.py?ref_type=tags__;!!G_uCfscf7eWS!b1k1pgJX4H1uOHy4TcFuL4oglueaBVrhpS6YZLQYhGVtTU70Ll3NTY9lm2x3WXvaRZDGg4Id3Aw2n3l_X6ZiKFo$  <https://urldefense.us/v3/__https://gitlab.com/petsc/petsc/-/blob/v3.0.0/bin/configVars.py?ref_type=tags__;!!G_uCfscf7eWS!YHzfvx7POQpHGF3pPcyxIv7p4vYMjCf5LGpy_6AcyuuK8zKOIFBdFBi6ZTqOdqxqQiIA-tAS7HGoZaoqRNeq$>
> 
>   Thanks,
> 
>      Matt
>  
>> Would that work?
>> Mark
>> 
>> On Thu, Jan 9, 2025 at 12:23 PM Randall Mackie <rlmackie862 at gmail.com <mailto:rlmackie862 at gmail.com>> wrote:
>>> Dear PETSc team:
>>> 
>>> At the bottom of the configuration file, various things are printed out, like the MPI implementation:
>>> 
>>> MPI:
>>>   Version:    3
>>>   mpiexec: /state/std2/openmpi-5.0.3-oneapi/bin/mpiexec
>>>   Implementation: openmpi
>>>   OMPI_VERSION: 5.0.3
>>>  
>>> We would like to pick these up and write them to our own output files.
>>> 
>>> What PETSc variables have this information? 
>>> 
>>> Especially the implementation.
>>> 
>>> 
>>> Thank you,
>>> 
>>> Randy M.
> 
> 
> 
> --
> What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.
> -- Norbert Wiener
> 
> https://urldefense.us/v3/__https://www.cse.buffalo.edu/*knepley/__;fg!!G_uCfscf7eWS!b1k1pgJX4H1uOHy4TcFuL4oglueaBVrhpS6YZLQYhGVtTU70Ll3NTY9lm2x3WXvaRZDGg4Id3Aw2n3l_mlRHFe0$  <https://urldefense.us/v3/__http://www.cse.buffalo.edu/*knepley/__;fg!!G_uCfscf7eWS!YHzfvx7POQpHGF3pPcyxIv7p4vYMjCf5LGpy_6AcyuuK8zKOIFBdFBi6ZTqOdqxqQiIA-tAS7HGoZTlw8ELe$>

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