etol

Note

Some versions of this command have been ported to the new APBS syntax (see YAML- and JSON-format input files):

• For a boundary element calculation, see boundary_element.BoundaryElement.error_tolerance().
• For a finite difference calculation, see finite_difference.FiniteDifference.error_tolerance().
• For a finite element calculation, see finite_element.FiniteElement.error_tolerance().

Specifies the tolerance for iterations of the partial differntial equation solvers: The syntax is:

etol { tol }

where tol is the (floating point) numerical value for the error tolerance.

For finite difference solvers, this keyword is optional and is intended for mg-manual, mg-auto, and mg-para calculation types.

For finite element solvers, this keyword specifies the tolerance for error-based adaptive refinement during the solve-estimate-refine iterations of the finite element solver (fe-manual), where tol is the (floating point) numerical value for the error tolerance.