petsc4py.PETSc

Portable, Extensible Toolkit for Scientific Computation.

Basic constants:

DECIDE

Use a default value for an int or float parameter.

DEFAULT

Use a default value chosen by PETSc.

DETERMINE

Compute a default value for an int or float parameter. For tolerances this uses the default value from when the object’s type was set.

CURRENT

Do not change the current value that is set.

UNLIMITED

For a parameter that is a bound, such as the maximum number of iterations, do not bound the value.

More constants:

INFINITY

Very large real value.

NINFINITY

Very large negative real value.

PINFINITY

Very large positive real value, same as INFINITY.

Classes

AO	Application ordering object.
Comm	Communicator object.
DM	An object describing a computational grid or mesh.
DMComposite	A DM object that is used to manage data for a collection of DMs.
DMDA	A DM object that is used to manage data for a structured grid.
DMInterpolation	Interpolation on a mesh.
DMLabel	An object representing a subset of mesh entities from a DM.
DMPlex	Encapsulate an unstructured mesh.
DMPlexTransform	Mesh transformations.
DMPlexTransformType	Transformation types.
DMShell	A shell DM object, used to manage user-defined problem data.
DMStag	A DM object representing a "staggered grid" or a structured cell complex.
DMSwarm	A DM object used to represent arrays of data (fields) of arbitrary type.
DS	Discrete System object.
Device	The device object.
DeviceContext	DeviceContext object.
DualSpace	Dual space to a linear space.
FE	A PETSc object that manages a finite element space.
IS	A collection of indices.
InsertMode	Insertion mode.
KSP	Abstract PETSc object that manages all Krylov methods.
LGMap	Mapping from a local to a global ordering.
Log	Logging support.
LogClass	Logging support.
LogEvent	Logging support.
LogStage	Logging support for different stages.
Mat	Matrix object.
MatPartitioning	Object for managing the partitioning of a matrix or graph.
NormType	Norm type.
NullSpace	Nullspace object.
Object	Base class wrapping a PETSc object.
Options	The options database object.
PC	Preconditioners.
Partitioner	A graph partitioner.
Quad	Quadrature rule for integration.
Random	The random number generator object.
SF	Star Forest object for communication.
SNES	Nonlinear equations solver.
Scatter	Scatter object.
ScatterMode	Scatter mode.
Section	Mapping from integers in a range to unstructured set of integers.
Space	Function space object.
Sys	System utilities.
TAO	Optimization solver.
TAOLineSearch	TAO Line Search.
TS	ODE integrator.
Vec	A vector object.
Viewer	Viewer object.
ViewerHDF5	Viewer object for HDF5 file formats.

Exceptions

Error

PETSc Error.

Functions

garbage_cleanup([comm])	Clean up unused PETSc objects.
garbage_view([comm])	Print summary of the garbage PETSc objects.

Attributes

DECIDE	Constant DECIDE of type int
DEFAULT	Constant DEFAULT of type int
DETERMINE	Constant DETERMINE of type int
CURRENT	Constant CURRENT of type int
UNLIMITED	Constant UNLIMITED of type int
INFINITY	Object INFINITY of type float
NINFINITY	Object NINFINITY of type float
PINFINITY	Object PINFINITY of type float
COMM_NULL	Object COMM_NULL of type Comm
COMM_SELF	Object COMM_SELF of type Comm
COMM_WORLD	Object COMM_WORLD of type Comm