The butterfly class Encapsulates a butterfly topology as described in "High Performance Datacenter Networks" by Abts and Kim. More...

#include <butterfly.h>

Inheritance diagram for sstmac::hw::butterfly:

Collaboration diagram for sstmac::hw::butterfly:

Public Member Functions
virtual std::string	to_string () const

virtual void	init_factory_params (sprockit::sim_parameters *params)

virtual	~butterfly ()

virtual int	num_switches () const

void	minimal_route_to_coords (const coordinates &src_coords, const coordinates &dest_coords, structured_routable::path &path) const
	Workhorse function for implementing minimal_route_to_switch and #minimal_route_to_node. More...

int	minimal_distance (const coordinates &src_coords, const coordinates &dest_coords) const
	The function accepts either source or node coordinates. More...

switch_id	switch_number (const coordinates &coords) const

virtual void	connect_objects (internal_connectable_map &switches)
	Given a set of connectables, connect them appropriately. More...

switch_id	endpoint_to_ejection_switch (node_id nodeaddr, int &switch_port) const

virtual int	convert_to_port (int dim, int dir) const

int	ndimensions () const
	Each level in a kary-nfly counts as a dimension. More...

std::vector< node_id >	nodes_connected_to_injection_switch (switch_id swaddr) const

std::vector< node_id >	nodes_connected_to_ejection_switch (switch_id swaddr) const

void	productive_paths (structured_routable::path_set &paths, const coordinates &current, const coordinates &dst)

Public Member Functions inherited from sstmac::hw::abstract_butterfly
virtual	~abstract_butterfly ()

int	kary () const
	kary More...

int	nfly () const
	nfly More...

int	num_switches_per_col () const
	num_switches_per_col The butterfly is physically laid out as a 2D-graid of cols and rows More...

virtual int	num_leaf_switches () const
	num_switches_per_col The butterfly is physically laid out as a 2D-graid of cols and rows. More...

int	diameter () const

virtual void	productive_path (int dim, const coordinates &src, const coordinates &dst, structured_routable::path &path) const

void	configure_vc_routing (std::map< routing::algorithm_t, int > &m) const

Public Member Functions inherited from sstmac::hw::structured_topology
virtual	~structured_topology ()

virtual void	build_internal_connectables (internal_connectable_map &connectables, sprockit::factory< connectable > factory, partition part, int my_rank, sprockit::sim_parameters params, connectable dummy)

virtual void	build_endpoint_connectables (end_point_connectable_map &connectables, sprockit::factory< connectable > factory, partition part, int my_rank, sprockit::sim_parameters *params)

virtual void	build_interface_connectables (int conc, end_point_connectable_map &connectables, sprockit::factory2< connectable > nic_factory, partition part, int my_rank, sprockit::sim_parameters params, sprockit::factory_type interconnect)

virtual void	minimal_routes_to_coords (const coordinates &src_coords, const coordinates &dest_coords, structured_routable::path &current_path, structured_routable::path_set &paths) const

virtual int	endpoints_per_switch (switch_id addr) const
	Given a switch address, return number of nodes connected to it. More...

virtual int	num_nodes () const

virtual int	num_endpoints () const

coordinates	switch_coords (switch_id swid) const
	Compute coordinates (e.g. More...

virtual coordinates	node_coords (node_id nid) const
	Compute coordinates (e.g. More...

coordinates	endpoint_coords (node_id nid) const

virtual switch_id	endpoint_to_injection_switch (node_id nodeaddr, int &switch_port) const

virtual int	endpoint_to_ejection_port (node_id addr) const

virtual int	endpoint_to_injection_port (node_id addr) const

virtual int	endpoint_to_switch_port (node_id nid) const

void	finalize_init ()

std::string	label (node_id nid) const

std::string	label (switch_id sid) const

virtual void	minimal_route_to_switch (switch_id current_sw_addr, switch_id dest_sw_addr, structured_routable::path &path) const
	Implementation of topology::minimal_route_to_switch. More...

virtual void	minimal_routes_to_switch (switch_id current_sw_addr, switch_id dest_sw_addr, structured_routable::path &current_path, structured_routable::path_set &paths) const

virtual void	eject_paths_on_switch (node_id dest_addr, switch_id sw_addr, structured_routable::path_set &paths) const

virtual int	num_hops_to_node (node_id src, node_id dst) const

virtual coordinates	neighbor_at_port (switch_id sid, int port) const

virtual node_id	node_addr (const coordinates &coords) const

virtual node_id	node_addr (const coordinates &sw_coords, int port) const

virtual void	send_partners (traffic_pattern::type_t ty, node_id src_node, std::vector< node_id > &partners) const

virtual void	recv_partners (traffic_pattern::type_t ty, node_id src_node, std::vector< node_id > &partners) const

Private Member Functions
virtual void	compute_switch_coords (switch_id uid, coordinates &coords) const
	Compute coordinates (e.g. More...

int	last_col_index_start () const

Private Attributes
long	last_col_index_start_

Additional Inherited Members
Public Types inherited from sstmac::hw::abstract_butterfly
enum	dimension_t { up_dimension = 0, down_dimension = 1 }

Protected Member Functions inherited from sstmac::hw::structured_topology
void	configure_injection_geometry (std::vector< int > &redundancies)

virtual std::vector< node_id >	nodes_connected_to_switch (switch_id swaddr) const

	structured_topology ()

void	partners (bool get_send_partner, traffic_pattern::type_t ty, node_id src, std::vector< node_id > &partner_list) const

virtual void	nearest_neighbor_partners (const coordinates &src_sw_coords, int port, std::vector< node_id > &partners) const

virtual void	tornado_recv_partners (const coordinates &src_sw_coords, int port, std::vector< node_id > &partners) const

virtual void	tornado_send_partners (const coordinates &src_sw_coords, int port, std::vector< node_id > &partners) const

virtual void	bit_complement_partners (const coordinates &src_sw_coords, int port, std::vector< node_id > &partners) const

Protected Attributes inherited from sstmac::hw::abstract_butterfly
int	kary_

int	nfly_

long	nswitches_per_col_

Protected Attributes inherited from sstmac::hw::structured_topology
int	eject_geometric_id_

int	injection_redundancy_

bool	outputgraph_

Detailed Description

The butterfly class Encapsulates a butterfly topology as described in "High Performance Datacenter Networks" by Abts and Kim.

Definition at line 117 of file butterfly.h.

Constructor & Destructor Documentation

virtual sstmac::hw::butterfly::~butterfly ( )

inlinevirtual

Definition at line 130 of file butterfly.h.

Member Function Documentation

virtual void sstmac::hw::butterfly::compute_switch_coords	(	switch_id	swid,
		coordinates &	coords
	)		const

privatevirtual

Compute coordinates (e.g.

X,Y,Z for 3D torus)

Parameters

swid	The unique index defining a switch location
coords	[inout] The unique coordinates of the switch

Reimplemented from sstmac::hw::abstract_butterfly.

virtual void sstmac::hw::butterfly::connect_objects ( internal_connectable_map & objects )

virtual

Given a set of connectables, connect them appropriately.

Parameters

objects	The set of objects to connect
cloner	If in parallel mode, not all objects may exist. The factory creates missing objects.

Exceptions

value_error If invalid switchid is passed to cloner

Implements sstmac::hw::structured_topology.

virtual int sstmac::hw::butterfly::convert_to_port	(	int	dim,
		int	dir
	)		const

virtual

switch_id sstmac::hw::butterfly::endpoint_to_ejection_switch	(	node_id	nodeaddr,
		int &	switch_port
	)		const

virtual

Reimplemented from sstmac::hw::structured_topology.

virtual void sstmac::hw::butterfly::init_factory_params ( sprockit::sim_parameters * params )

virtual

Reimplemented from sstmac::hw::abstract_butterfly.

int sstmac::hw::butterfly::last_col_index_start ( ) const

inlineprivate

Definition at line 187 of file butterfly.h.

int sstmac::hw::butterfly::minimal_distance	(	const coordinates &	src_coords,
		const coordinates &	dest_coords
	)		const

virtual

The function accepts either source or node coordinates.

This gives the minimal distance counting the number of hops between switches. If node coordinates are given, the last coordinate is just ignored.

Parameters

src_coords.	The source coordinates. This can be either switch or node coordinates.
dest_coords.	The destination coordinates. This can be either switch or node coordinates.

Returns: The number of hops to final destination

Implements sstmac::hw::structured_topology.

void sstmac::hw::butterfly::minimal_route_to_coords	(	const coordinates &	src_coords,
		const coordinates &	dest_coords,
		structured_routable::path &	path
	)		const

virtual

Workhorse function for implementing minimal_route_to_switch and #minimal_route_to_node.

Given source/dest coordinates, find the minimal path.

Parameters

current_sw_addr	The addr of the current switch
dest_sw_addr	The addr of the destination switch
path	[inout] A complete path descriptor to the destination switch

Implements sstmac::hw::structured_topology.

int sstmac::hw::butterfly::ndimensions ( ) const

inlinevirtual

Each level in a kary-nfly counts as a dimension.

Implements sstmac::hw::structured_topology.

Definition at line 166 of file butterfly.h.

References sstmac::hw::abstract_butterfly::compute_switch_coords(), sstmac::hw::abstract_butterfly::nfly_, sstmac::hw::structured_topology::nodes_connected_to_ejection_switch(), sstmac::hw::structured_topology::nodes_connected_to_injection_switch(), and sstmac::hw::structured_topology::productive_paths().

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