A module to manage the process grid. More...

Functions/Subroutines
subroutine, public	constructprocessgrid (world_comm_, process_rows_, process_columns_, process_slices_, be_verbose_in)
	Construct the process grid. More...

logical function, public	isroot ()
	Check if the current process is the root process. More...

integer function, public	getmyslice ()
	Get the slice of the current process. More...

integer function, public	getmycolumn ()
	Get the column of the current process. More...

integer function, public	getmyrow ()
	Get the row of the current process. More...

subroutine, public	destructprocessgrid ()
	Destruct the process grid.

Variables
integer, public	total_processors
	total processors in the grid.

integer, public	num_process_rows
	number of rows in the grid.

integer, public	num_process_columns
	number of columns in the grid.

integer, public	num_process_slices
	number of 2D slices in the grid.

integer, public	slice_size
	the slice of a 2D slice. Identiy current process

integer, public	my_slice
	which slice is the current process in.

integer, public	my_row
	which row is the current process in.

integer, public	my_column
	which column is the current process in. Ranks for communication

integer, public	global_rank
	current process's rank amongst processes.

integer, public	within_slice_rank
	rank for within slice communication.

integer, public	between_slice_rank
	rank for between slice communication.

integer, public	column_rank
	rank for within column communication.

integer, public	row_rank
	rank for within row communication. Communicators for communication

integer, public	global_comm
	communicator with every other process.

integer, public	row_comm
	communicator within a row.

integer, public	column_comm
	communicator within a column.

integer, public	within_slice_comm
	communicator within a slice.

integer, public	between_slice_comm
	communicator between slices.

integer, public	grid_error
	stores errors from MPI calls.

integer, public	rootid = 0
	Which rank is root? Blocked communication.

integer, public	block_multiplier
	Block scaling factor.

integer, public	number_of_blocks_columns
	number of column blocks.

integer, public	number_of_blocks_rows
	number of row blocks.

integer, dimension(:), allocatable, public	blocked_row_comm
	blocked communicator within a row.

integer, dimension(:), allocatable, public	blocked_column_comm
	blocked communicator within a column.

integer, dimension(:,:), allocatable, public	blocked_within_slice_comm
	blocked communicator within a slice.

integer, dimension(:,:), allocatable, public	blocked_between_slice_comm
	blocked communicator between slices.

Detailed Description

A module to manage the process grid.

Function/Subroutine Documentation

◆ constructprocessgrid()

subroutine, public processgridmodule::constructprocessgrid	(	integer(kind=c_int), intent(in)	world_comm_,
		integer(kind=c_int), intent(in)	process_rows_,
		integer(kind=c_int), intent(in)	process_columns_,
		integer(kind=c_int), intent(in)	process_slices_,
		logical(kind=c_bool), intent(in), optional	be_verbose_in
	)

Construct the process grid.

Parameters

[in]	world_comm_	a communicator that every process in the grid is a part of.
[in]	process_rows_	number of grid rows.
[in]	process_columns_	number of grid columns.
[in]	process_slices_	number of grid slices.
[in]	be_verbose_in	set true to print process grid info.

◆ getmycolumn()

integer function, public processgridmodule::getmycolumn ( )

Get the column of the current process.

Returns: column number of the current process.

◆ getmyrow()

integer function, public processgridmodule::getmyrow ( )

Get the row of the current process.

Returns: row number of the current process.

◆ getmyslice()

integer function, public processgridmodule::getmyslice ( )

Get the slice of the current process.

Returns: slice number of the current process.

◆ isroot()

logical function, public processgridmodule::isroot ( )

Check if the current process is the root process.

Returns: true if the current process is root.

Functions/Subroutines