One small issue which I noticed is the way how dealii constructs the
Constraint Matrix has probably changed. In order to illustrate this
thing, I have prepared an example (code along with input attached to the
mail for reference ) where I read a triangulation, Mark PBC Boundary
IDs, add periodicity, mark periodic faces and then print the constraint
matrix info.
For code if compiled with dealii 9.0.1. the output is :
Periodic Constraints info:
0 8: 1
1 9: 1
4 10: 1
5 11: 1
12 16: 1
13 17: 1
Periodic Constraints info:
0 12: 1
1 13: 1
2 14: 1
3 15: 1
8 16: 1
9 17: 1
whereas same code compiled with dealii 9.2.0 and ran with same example
gave the following output:
Periodic Constraints info:
8 0: 1
9 1: 1
10 4: 1
11 5: 1
16 12: 1
17 13: 1
Periodic Constraints info:
12 0: 1
13 1: 1
14 2: 1
15 3: 1
16 8: 1
17 9: 1
The order in which Periodic info is received for plus and and minus
faces has reversed, May I know if this behavior was desired or is just a
bug ?
Aditya:
The end result of the two should be the same, right? I don't know
whether anyone remembers what specific patch changed this, but unless
you have concrete reasons to believe that one way is correct and the
other is wrong, it seems to me that it doesn't matter which way around
constraints are built.
Or maybe I don't quite understand why you worry about the change?
Best
W.
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Wolfgang Bangerth email: [email protected]
www: http://www.math.colostate.edu/~bangerth/
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