[petsc-users] Global Numbering

[Mohammad Hassan Baghaei]

I am trying to fill a vector based on global coordinate. As I am trying to use VecGetValues() on the global coordinate, I find it that argument goes out of range, since I am using global numbering rather than local numbering.

 

From: Matthew Knepley [mailto:knepley at gmail.com] 
Sent: Wednesday, March 21, 2018 10:38 PM
To: Mohammad Hassan Baghaei <mhbaghaei at mail.sjtu.edu.cn>
Cc: PETSc <petsc-users at mcs.anl.gov>
Subject: Re: [petsc-users] Global Numbering

 

On Wed, Mar 21, 2018 at 8:18 AM, Mohammad Hassan Baghaei <mhbaghaei at mail.sjtu.edu.cn <mailto:mhbaghaei at mail.sjtu.edu.cn> > wrote:

Hello

I am trying to create a global vector of coordinates based on the parallelized dm. I find it really hard to work with the local numbering, how can I manage to create a kind of numbering on global level so that I could easily access to the nodes based on the new numbering. Thanks for your time.

 

DMGetCoordinates() gives you a global vector.

DMGetCoordinatesLocal() gives you a local vector.

 

What are you trying to do?

 

  Thanks,

 

     Matt

 

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.caam.rice.edu/~mk51/> 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20180322/77b9baad/attachment.html>