### PETSc MPI gather matrix

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Hello,

I generated a matrix from a bilinear form with PETSc as the linear-algebra backend. To run a solver that supports complex numbers, I want to collect this distributed matrix into a single matrix at node 0 and then convert it to scipy. Is there a routine to do so (I was checking PETSc Matrix routines but didnot find such)? Another option would be to use PETSc with support for complex numbers, can I do so with fenics?

Thanks in advance! Christopher

Community: FEniCS Project

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