csc_matrix.py

Define the CSCmatrix class.

class openmdao.matrices.csc_matrix.CSCMatrix(comm, is_internal)[source]

Bases: openmdao.matrices.coo_matrix.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)[source]

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.