[petsc-users] DMPlex Distribution

[Mohammad Hassan]

Thanks for suggestion. I am going to use a block-based amr. I think I need to know exactly the mesh distribution of blocks across different processors for implementation of amr.

And as a general question, can we set block size of vector on each rank?

Thanks

Amir

 

From: Matthew Knepley [mailto:knepley at gmail.com] 
Sent: Tuesday, September 17, 2019 11:04 PM
To: Mohammad Hassan <mhbaghaei at mail.sjtu.edu.cn>
Cc: PETSc <petsc-users at mcs.anl.gov>
Subject: Re: [petsc-users] DMPlex Distribution

 

On Tue, Sep 17, 2019 at 9:27 AM Mohammad Hassan via petsc-users <petsc-users at mcs.anl.gov <mailto:petsc-users at mcs.anl.gov> > wrote:

Hi

I am using DMPlexCreateFromDAG() to construct my DM. Is it possible to set the distribution across processors manually. I mean, how can I set the share of dm on each rank (local)?

 

You could make a Shell partitioner and tell it the entire partition:

 

  https://www.mcs.anl.gov/petsc/petsc-master/docs/manualpages/DMPLEX/PetscPartitionerShellSetPartition.html

 

However, I would be surprised if you could do this. It is likely that you just want to mess with the weights in ParMetis.

 

  Thanks,

 

    Matt

 

Thanks

Amir




 

-- 

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://www.cse.buffalo.edu/~knepley/ <http://www.cse.buffalo.edu/~knepley/> 

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