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

[Satish Balay]

On Thu, 9 Jan 2025, Matthew Knepley wrote:

> On Thu, Jan 9, 2025 at 1:44 PM Mark Adams <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
> 
>   ${PETSC_ARCH}/lib/petsc/conf/RDict.db
> 
> which is a pickled Python dictionary of all the configure output. I wrote
> an example
> of pulling that data out, and _someone_ deleted it:
> 
> 
> https://urldefense.us/v3/__https://gitlab.com/petsc/petsc/-/blob/v3.0.0/bin/configVars.py?ref_type=tags__;!!G_uCfscf7eWS!YHzfvx7POQpHGF3pPcyxIv7p4vYMjCf5LGpy_6AcyuuK8zKOIFBdFBi6ZTqOdqxqQiIA-tAS7HGoZaoqRNeq$ 


rdict might be broken due to changes for python-3.13 https://urldefense.us/v3/__https://gitlab.com/petsc/petsc/-/merge_requests/7790__;!!G_uCfscf7eWS!c_-5Epc3IAK8_BPh93_6ptggEhLaET8BJuATxS4i93keUU9jR_OW7v_7lRCnwShL_NEe4FolruHscu0DiLNPvrt36aY$ 

Satish

> 
>   Thanks,
> 
>      Matt
> 
> 
> > Would that work?
> > Mark
> >
> > On Thu, Jan 9, 2025 at 12:23 PM Randall Mackie <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.
> >>
> >
> 
>