[petsc-dev] plex test examples give different partitionings than output file even with simple partitioner? WTF

[Matthew Knepley]

On Mon, Feb 6, 2017 at 6:30 PM, Barry Smith <bsmith at mcs.anl.gov> wrote:

>
>  Matt,
>
>    How come? I check and it is using the simple partitioner and no random
> number generator is called. How come when I run it it gives a different
> partitioning than in the output file? The vectors also have different
> partitionings. Are the output files out of date?
>

In my branch, ex15 has not had its partitioning replaced. It is still using
ParMetis.

I can do it.

   Matt


> ~/Src/petsc/src/dm/impls/plex/examples/tests (knepley/feature-plex-tests-new=)
> arch-double
> $ petscmpiexec -n 2 ./ex15 -verbose -globaltonatural_sf_view > joe
> ~/Src/petsc/src/dm/impls/plex/examples/tests (knepley/feature-plex-tests-new=)
> arch-double
> $ paste output/ex15_0.out joe | more
> PetscSF Object: 2 MPI processes PetscSF Object: 2 MPI processes
>   type not yet set        type not yet set
>   [0] Number of roots=6, leaves=6, remote ranks=1         [0] Number of
> roots=4, leaves=4, remote ranks=2
>   [0] 0 <- (1,0)          [0] 0 <- (0,0)
>   [0] 1 <- (1,1)          [0] 1 <- (0,1)
>   [0] 2 <- (1,2)          [0] 2 <- (1,0)
>   [0] 3 <- (1,3)          [0] 3 <- (1,1)
>   [0] 4 <- (1,4)          [1] Number of roots=14, leaves=14, remote ranks=2
>   [0] 5 <- (1,5)          [1] 0 <- (1,2)
>   [1] Number of roots=12, leaves=12, remote ranks=2       [1] 1 <- (1,3)
>   [1] 0 <- (1,6)          [1] 2 <- (0,2)
>   [1] 1 <- (1,7)          [1] 3 <- (0,3)
>   [1] 2 <- (1,8)          [1] 4 <- (1,4)
>   [1] 3 <- (1,9)          [1] 5 <- (1,5)
>   [1] 4 <- (0,0)          [1] 6 <- (1,6)
>   [1] 5 <- (0,1)          [1] 7 <- (1,7)
>   [1] 6 <- (1,10)         [1] 8 <- (1,8)
>   [1] 7 <- (1,11)         [1] 9 <- (1,9)
>   [1] 8 <- (0,2)          [1] 10 <- (1,10)
>   [1] 9 <- (0,3)          [1] 11 <- (1,11)
>   [1] 10 <- (0,4)         [1] 12 <- (1,12)
>   [1] 11 <- (0,5)         [1] 13 <- (1,13)
> ==== original V in global ordering. size==18    block size=2    ====
> original V in global ordering. size==18    block size=2
> Vec Object: V 2 MPI processes   Vec Object: V 2 MPI processes
>   type: mpi       type: mpi
> Process [0]     Process [0]
>
>
>


-- 
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
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