Hi All,


I have a question about resolving chains of constraints in a 
ConstraintMatrix class object after calling close() in a parallel 
distributed case:


I created a ConstraintMatrix with both periodic and hanging node 
constraints, and called close().

Then I picked a constrained degree of freedom, lets say with global dof id 
= “i” and printed the constraint equation pairs (j,a_ij) corresponding to 
“i” on the processor for which “i” is locally owned as well as the 
processors for which “i” is a ghost. I expected the constraint equation to 
be the same for owning processor and the ghost processor, however we have 
encountered a case where printing the constraint equation entries shows 
different 
“j” for owning and ghost processorsalthough a_ij are same. When we printed 
the coordinates of “j” which were different, we found that those two nodes 
to be periodic images of each other.


Should I except the constraint equation to be the same for the owning 
processor and the ghost processors?


Thank you,

Sambit

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