bempp.api.linalg.direct_solvers

Bempp direct solver interface.

Module Contents

Functions

compute_lu_factors(A)	Precompute the LU factors of a dense operator A.
lu(A, b[, lu_factor])	Perform an LU solve.

bempp.api.linalg.direct_solvers.compute_lu_factors(A)

Precompute the LU factors of a dense operator A.

This function returns a tuple of LU factors of A. This tuple can be used in the lu_factor attribute of the lu function so that the LU decomposition is not recomputed at each call to lu.

bempp.api.linalg.direct_solvers.lu(A, b, lu_factor=None)

Perform an LU solve.

This function takes an operator and a grid function, converts the operator into a dense matrix and solves the system via LU decomposition. The result is again returned as a grid function.

Parameters

Abempp.api.BoundaryOperator

The left-hand side boundary operator

bbempp.api.GridFunction

The right-hand side grid function

lu_decomptuple

Optionally pass the tuple (lu, piv) obtained by the scipy method scipy.linalg.lu_factor