[petsc-users] Matrix Decomposition

[Eda Oktay]

Hello,

I am trying to divide a matrix into unequal sized parts into different
processors (for example I want to divide 10*10 matrix into 4*4 and 6*6
submatrix in two processors). When my program reads a matrix from file, it
automatically divides it into equal parts and then I can't change local
sizes.

How can I decompose a matrix that is read from a file?

Thanks,

Eda
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