mod_mpi_radiation Module

MPI infrastructure for the radiation solver.

This module manages the parallel execution of the radiation transport solver. Unlike the flow solver which uses a replicated mesh, the radiation solver can be configured with its own communicator and task decomposition logic (e.g., distributing rays or discrete ordinates).

Derived Types

type, public ::  radiation_mpi_t

MPI context for radiation operations.

Components

Type	Visibility	Attributes		Name		Initial
type(MPI_Comm),	public		::	comm	=	MPI_COMM_NULL
integer,	public		::	first_task	=	0
integer,	public		::	last_task	=	-1
integer,	public		::	nlocal_tasks	=	0
integer,	public		::	nprocs	=	0
integer,	public		::	rank	=	-1

Subroutines

public subroutine radiation_mpi_finalize(rad)

Releases radiation MPI resources.

Arguments

Type	Intent	Optional	Attributes		Name
type(radiation_mpi_t),	intent(inout)			::	rad

public subroutine radiation_mpi_initialize(rad, comm_parent, n_tasks)

Initializes the radiation MPI context by duplicating a parent communicator.

Arguments

Type	Intent	Optional	Attributes		Name
type(radiation_mpi_t),	intent(inout)			::	rad	The radiation context to initialize.
type(MPI_Comm),	intent(in)			::	comm_parent	The parent communicator (usually MPI_COMM_WORLD).
integer,	intent(in),	optional		::	n_tasks	Optional total number of tasks to decompose immediately.

public subroutine radiation_task_bounds(rad, n_tasks)

Performs contiguous task decomposition for the radiation solver.

Arguments

Type	Intent	Optional	Attributes		Name
type(radiation_mpi_t),	intent(inout)			::	rad	The radiation context to update.
integer,	intent(in)			::	n_tasks	Total number of discrete tasks (e.g., rays).

private subroutine check_mpi(ierr, where)

Internal helper for MPI error checking.

Arguments

Type	Intent	Optional	Attributes		Name
integer,	intent(in)			::	ierr
character(len=*),	intent(in)			::	where