[petsc-users] Values of a column in a parallel matrix

[Daralagodu Dattatreya Jois, Sathwik Bharadw]

Hey all,


 I am using  AIJ matrix to solve Laplace problem in finite element framework. To apply Neumann boundary conditions I need to obtain values of first and last few columns and subtract it with the corresponding right hand side vector. I understand that MatGetColumnVector and MatGetValues are not collective. Is there any other alternative petsc calls to achieve this in parallel?



Thanks,

Sathwik
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