Hello Prof. Bangerth, Thank you for your response. The constraint matrix that I get from the above code is: 0 = 0 1 = 0 2 = 0 3 = 0 4 = 0 5 = 0 12 18: 1 13 19: 1 14 20: 1 15 21: 1 16 22: 1 17 23: 1 This includes the dirichlet bc on dofs 0-5. As you can see that the constraint matrix is according the to constraints i want to apply (refer the printed output of the code snippet in the previous message). But the sparsity pattern doesn't seem to be as per this.
Thanks Vinayak On Friday, June 23, 2023 at 9:14:32 AM UTC+5:30 Wolfgang Bangerth wrote: > On 6/12/23 02:35, Vinayak Vijay wrote: > > > > As per the output, I expect that columns 18-23 in rows 12-17 should be > > non-zero and vice versa. That is, the non-zero entries due to the above > > constraints should have been as highlighted in green in Image2.png. > However, > > clearly, in Image2.png I see that this isn't the case. Columns 18-23 are > > non-zero in rows 6-11 (instead of rows 12-17) and vice versa > (highlighted in > > blue). > > > > I am not able to figure out this discrepancy. Can someone help? > > Not being able to see the program that you used, it's hard to tell. But > can > you try and just output the constraints you get? AffineConstraints has a > print() function (perhaps named differently) that should help here. > > Best > W. > > -- > ------------------------------------------------------------------------ > Wolfgang Bangerth email: bang...@colostate.edu > www: http://www.math.colostate.edu/~bangerth/ > > > -- The deal.II project is located at http://www.dealii.org/ For mailing list/forum options, see https://groups.google.com/d/forum/dealii?hl=en --- You received this message because you are subscribed to the Google Groups "deal.II User Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to dealii+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/dealii/1481c877-b93d-4567-a5f5-082eb8abc077n%40googlegroups.com.
