SimGrid  3.21
Versatile Simulation of Distributed Systems
simgrid::kernel::routing::DragonflyZone Class Reference

Detailed Description

NetZone using a Dragonfly topology.

Generate dragonfly according to the topology asked for, according to: Cray Cascade: a Scalable HPC System based on a Dragonfly Network Greg Faanes, Abdulla Bataineh, Duncan Roweth, Tom Court, Edwin Froese, Bob Alverson, Tim Johnson, Joe Kopnick, Mike Higgins and James Reinhard Cray Inc, Chippewa Falls, Wisconsin, USA or http://www.cray.com/sites/default/files/resources/CrayXCNetwork.pdf

We use the same denomination for the different levels, with a Green, Black and Blue color scheme for the three different levels.

Description of the topology has to be given with a string of type : "3,4;4,3;5,1;2"

Last part : "2" : 2 nodes per blade Third part : "5,1" : five blades/routers per chassis, with one link between each (green network) Second part : "4,3" = four chassis per group, with three links between each nth router of each chassis (black network) First part : "3,4" = three electrical groups, linked in an alltoall pattern by 4 links each (blue network)

LIMITATIONS (for now):

  • Routing is only static and uses minimal routes.
  • When n links are used between two routers/groups, we consider only one link with n times the bandwidth (needs to be validated on a real system)
  • All links have the same characteristics for now
  • Blue links are all attached to routers in the chassis n°0. This limits the number of groups possible to the number of blades in a chassis. This is also not realistic, as blue level can use more links than a single Aries can handle, thus it should use several routers.

#include <DragonflyZone.hpp>

Inherits simgrid::kernel::routing::ClusterZone.

Public Member Functions

 DragonflyZone (NetZoneImpl *father, std::string name, resource::NetworkModel *netmodel)
 
 ~DragonflyZone () override
 
void get_local_route (NetPoint *src, NetPoint *dst, RouteCreationArgs *into, double *latency) override
 Probe the routing path between two points that are local to the called NetZone. More...
 
void parse_specific_arguments (ClusterCreationArgs *cluster) override
 
void seal () override
 Seal your netzone once you're done adding content, and before routing stuff through it. More...
 
void rankId_to_coords (int rank_id, unsigned int coords[4])
 
- Public Member Functions inherited from simgrid::kernel::routing::ClusterZone
 ClusterZone (NetZoneImpl *father, std::string name, resource::NetworkModel *netmodel)
 
void get_graph (xbt_graph_t graph, std::map< std::string, xbt_node_t > *nodes, std::map< std::string, xbt_edge_t > *edges) override
 
virtual void create_links_for_node (ClusterCreationArgs *cluster, int id, int rank, unsigned int position)
 
unsigned int node_pos (int id)
 
unsigned int node_pos_with_loopback (int id)
 
unsigned int node_pos_with_loopback_limiter (int id)
 
- Public Member Functions inherited from simgrid::kernel::routing::NetZoneImpl
s4u::NetZoneget_iface ()
 
simgrid::s4u::Hostcreate_host (const char *name, std::vector< double > *speed_per_pstate, int core_count, std::map< std::string, std::string > *props)
 Make an host within that NetZone. More...
 
virtual void add_bypass_route (NetPoint *src, NetPoint *dst, NetPoint *gw_src, NetPoint *gw_dst, std::vector< resource::LinkImpl *> &link_list, bool symmetrical)
 Creates a new route in this NetZone. More...
 
virtual int add_component (kernel::routing::NetPoint *elm)
 
virtual void add_route (kernel::routing::NetPoint *src, kernel::routing::NetPoint *dst, kernel::routing::NetPoint *gw_src, kernel::routing::NetPoint *gw_dst, std::vector< kernel::resource::LinkImpl *> &link_list, bool symmetrical)
 
unsigned int get_table_size ()
 
std::vector< kernel::routing::NetPoint * > get_vertices ()
 
NetZoneImplget_father ()
 
std::vector< NetZoneImpl * > * get_children ()
 
const std::string & get_name () const
 Retrieves the name of that netzone as a C++ string. More...
 
const char * get_cname () const
 Retrieves the name of that netzone as a C string. More...
 
std::vector< s4u::Host * > get_all_hosts ()
 
int get_host_count ()
 

Additional Inherited Members

- Public Types inherited from simgrid::kernel::routing::NetZoneImpl
enum  RoutingMode { RoutingMode::unset = 0, RoutingMode::base, RoutingMode::recursive }
 
- Static Public Member Functions inherited from simgrid::kernel::routing::NetZoneImpl
static void get_global_route (routing::NetPoint *src, routing::NetPoint *dst, std::vector< resource::LinkImpl *> &links, double *latency)
 
- Public Attributes inherited from simgrid::kernel::routing::ClusterZone
std::unordered_map< unsigned int, std::pair< kernel::resource::LinkImpl *, kernel::resource::LinkImpl * > > private_links_
 
void * loopback_ = nullptr
 
kernel::resource::LinkImpl * backbone_ = nullptr
 
NetPointrouter_ = nullptr
 
bool has_limiter_ = false
 
bool has_loopback_ = false
 
unsigned int num_links_per_node_ = 1
 
- Public Attributes inherited from simgrid::kernel::routing::NetZoneImpl
resource::NetworkModel * network_model_
 
RoutingMode hierarchy_ = RoutingMode::unset
 
- Protected Member Functions inherited from simgrid::kernel::routing::NetZoneImpl
 NetZoneImpl (NetZoneImpl *father, std::string name, resource::NetworkModel *network_model)
 
virtual ~NetZoneImpl ()
 
bool get_bypass_route (routing::NetPoint *src, routing::NetPoint *dst, std::vector< resource::LinkImpl *> &links, double *latency)
 retrieves the list of all routes of size 1 (of type src x dst x Link) More...
 

Constructor & Destructor Documentation

◆ DragonflyZone()

simgrid::kernel::routing::DragonflyZone::DragonflyZone ( NetZoneImpl father,
std::string  name,
resource::NetworkModel *  netmodel 
)
explicit

◆ ~DragonflyZone()

simgrid::kernel::routing::DragonflyZone::~DragonflyZone ( )
override

Member Function Documentation

◆ get_local_route()

void simgrid::kernel::routing::DragonflyZone::get_local_route ( NetPoint src,
NetPoint dst,
RouteCreationArgs *  into,
double *  latency 
)
overridevirtual

Probe the routing path between two points that are local to the called NetZone.

Parameters
srcwhere from
dstwhere to
intoContainer into which the traversed links and gateway informations should be pushed
latencyAccumulator in which the latencies should be added (caller must set it to 0)

Reimplemented from simgrid::kernel::routing::ClusterZone.

◆ parse_specific_arguments()

void simgrid::kernel::routing::DragonflyZone::parse_specific_arguments ( ClusterCreationArgs *  cluster)
overridevirtual

◆ seal()

void simgrid::kernel::routing::DragonflyZone::seal ( )
overridevirtual

Seal your netzone once you're done adding content, and before routing stuff through it.

Reimplemented from simgrid::kernel::routing::NetZoneImpl.

◆ rankId_to_coords()

void simgrid::kernel::routing::DragonflyZone::rankId_to_coords ( int  rank_id,
unsigned int  coords[4] 
)

The documentation for this class was generated from the following file: