[petsc-users] Global matrix from global sub-matrices

[Bikash Kanungo]

Hi,

I have four global matrices: A (mxm), B (mxn), C (nxm) and D (nxn). All of
these are of type MATMPIAIJ (sparse parallel matrix) created using number
of global rows and columns. I want to construct an (m+n)x(m+n) global
matrix called M which would have A, B, C and D as its sub-matrices in
clockwise fashion starting from A at the upper-left. What can be the best
way to construct M from A, B, C and D sub-matrices?

Thanks,
Bikash

-- 
Bikash S. Kanungo
PhD Student
Computational Materials Physics Group
Mechanical Engineering
University of Michigan
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