SubSystemsManager

class dolfin.cpp.common.SubSystemsManager(*args, **kwargs)

Bases: object

This is a singleton class which manages the initialisation and finalisation of various sub systems, such as MPI and PETSc.

static finalize(*args)

Finalize subsytems. This will be called by the destructor, but in special cases it may be necessary to call finalize() explicitly.

static init_mpi(*args)

Overloaded versions

• init_mpi()

  Initialise MPI

• init_mpi(argc, argv[], required_thread_level)

  Initialise MPI with required level of thread support

static init_petsc(*args)

Overloaded versions

• init_petsc()

  Initialize PETSc without command-line arguments

• init_petsc(argc, argv[])

  Initialize PETSc with command-line arguments. Note that PETSc command-line arguments may also be filtered and sent to PETSc by parameters.parse(argc, argv).

static mpi_finalized(*args)

Check if MPI has been finalized (returns true if MPI has been finalised)

static mpi_initialized(*args)

Check if MPI has been initialised (returns true if MPI has been initialised, even if it is later finalised)

static responsible_mpi(*args)

Return true if DOLFIN intialised MPI (and is therefore responsible for finalization)

static responsible_petsc(*args)

Return true if DOLFIN intialised PETSc (and is therefore responsible for finalization)

thisown

The membership flag