On 7/17/25 12:19, Md Mahmudul Islam wrote:
Thank you again, Professor, for your kind reply. I hope I have solved the
ghost element problem. But now I am encountering a new error of
[0]PETSC ERROR: Argument out of range
[0]PETSC ERROR: Inserting a new nonzero at (6,7) in the matrix
I have reviewed the previous messages and found it challenging to pinpoint the
exact problem.
Mahmudul:
as before, I think that the error is actually quite clear: You are adding an
entry to the matrix in a place where it is not allowed to add one. I assume
this is a sparse matrix and that you need to make sure that the sparsity
pattern knows that this is an entry you want to write into.
Best
W.
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