csc_matrix.py

Define the CSCmatrix class.

class openmdao.matrices.csc_matrix.CSCMatrix(comm, is_internal)

Bases: COOMatrix

Sparse matrix in Compressed Col Storage format.

Parameters:

commMPI.Comm or <FakeComm>

Communicator of the top-level system that owns the <Jacobian>.

is_internalbool

If True, this is the int_mtx of an AssembledJacobian.

__init__(comm, is_internal)

Initialize all attributes.

set_complex_step_mode(active)

Turn on or off complex stepping mode.

When turned on, the value in each subjac is cast as complex, and when turned off, they are returned to real values.

Parameters:

activebool

Complex mode flag; set to True prior to commencing complex step.