1 /* Copyright (c) 2016-2021. The SimGrid Team. All rights reserved. */
3 /* This program is free software; you can redistribute it and/or modify it
4 * under the terms of the license (GNU LGPL) which comes with this package. */
6 #ifndef SIMGRID_S4U_NETZONE_HPP
7 #define SIMGRID_S4U_NETZONE_HPP
9 #include <simgrid/forward.h>
10 #include <simgrid/s4u/Link.hpp>
11 #include <xbt/graph.h>
12 #include <xbt/signal.hpp>
16 #include <unordered_map>
23 /** @brief Networking Zones
25 * A netzone is a network container, in charge of routing information between elements (hosts) and to the nearby
26 * netzones. In SimGrid, there is a hierarchy of netzones, with a unique root zone (that you can retrieve from the
29 class XBT_PUBLIC NetZone {
31 friend kernel::routing::NetZoneImpl;
34 kernel::routing::NetZoneImpl* const pimpl_;
37 explicit NetZone(kernel::routing::NetZoneImpl* impl) : pimpl_(impl) {}
40 /** @brief Retrieves the name of that netzone as a C++ string */
41 const std::string& get_name() const;
42 /** @brief Retrieves the name of that netzone as a C string */
43 const char* get_cname() const;
45 NetZone* get_parent() const;
46 NetZone* set_parent(const NetZone* parent);
47 std::vector<NetZone*> get_children() const;
49 std::vector<Host*> get_all_hosts() const;
50 int get_host_count() const;
52 kernel::routing::NetZoneImpl* get_impl() const { return pimpl_; }
54 /** Get the properties assigned to a netzone */
55 const std::unordered_map<std::string, std::string>* get_properties() const;
56 /** Retrieve the property value (or nullptr if not set) */
57 const char* get_property(const std::string& key) const;
58 void set_property(const std::string& key, const std::string& value);
59 /** @brief Get the netpoint associated to this netzone */
60 kernel::routing::NetPoint* get_netpoint();
63 XBT_ATTRIB_DEPRECATED_v331("Please use get_parent()") NetZone* get_father() const;
64 XBT_ATTRIB_DEPRECATED_v332("Please use set_parent() to manage NetZone's relationship") NetZone* add_child(
68 void extract_xbt_graph(const s_xbt_graph_t* graph, std::map<std::string, xbt_node_t, std::less<>>* nodes,
69 std::map<std::string, xbt_edge_t, std::less<>>* edges);
71 /* Add content to the netzone, at parsing time. It should be sealed afterward. */
72 unsigned long add_component(kernel::routing::NetPoint* elm); /* A host, a router or a netzone, whatever */
75 * @brief Add a route between 2 netpoints
78 * - route between 2 hosts/routers in same netzone, no gateway is needed
79 * - route between 2 netzones, connecting 2 gateways.
81 * @param src Source netzone's netpoint
82 * @param dst Destination netzone' netpoint
83 * @param gw_src Netpoint of the gateway in the source netzone
84 * @param gw_dst Netpoint of the gateway in the destination netzone
85 * @param link_list List of links and their direction used in this communication
86 * @param symmetrical Bi-directional communication
88 void add_route(kernel::routing::NetPoint* src, kernel::routing::NetPoint* dst, kernel::routing::NetPoint* gw_src,
89 kernel::routing::NetPoint* gw_dst, const std::vector<LinkInRoute>& link_list, bool symmetrical = true);
92 XBT_ATTRIB_DEPRECATED_v332("Please use add_route() method which uses s4u::LinkInRoute instead of "
93 "LinkImpl") void add_route(kernel::routing::NetPoint* src, kernel::routing::NetPoint* dst,
94 kernel::routing::NetPoint* gw_src,
95 kernel::routing::NetPoint* gw_dst,
96 const std::vector<kernel::resource::LinkImpl*>& link_list,
99 XBT_ATTRIB_DEPRECATED_v332("Please use add_bypass_route() method which uses s4u::LinkInRoute instead of "
100 "LinkImpl") void add_bypass_route(kernel::routing::NetPoint* src,
101 kernel::routing::NetPoint* dst,
102 kernel::routing::NetPoint* gw_src,
103 kernel::routing::NetPoint* gw_dst,
104 std::vector<kernel::resource::LinkImpl*>& link_list,
105 bool /*symmetrical*/);
108 void add_bypass_route(kernel::routing::NetPoint* src, kernel::routing::NetPoint* dst,
109 kernel::routing::NetPoint* gw_src, kernel::routing::NetPoint* gw_dst,
110 const std::vector<LinkInRoute>& link_list);
113 /*** Called on each newly created regular route (not on bypass routes) */
114 static xbt::signal<void(bool symmetrical, kernel::routing::NetPoint* src, kernel::routing::NetPoint* dst,
115 kernel::routing::NetPoint* gw_src, kernel::routing::NetPoint* gw_dst,
116 std::vector<kernel::resource::LinkImpl*> const& link_list)>
117 on_route_creation; // XBT_ATTRIB_DEPRECATED_v332 : should not be used by users, used by ns3.. if necessary,
118 // signal shouldn't use LinkImpl*
121 static xbt::signal<void(NetZone const&)> on_creation;
122 static xbt::signal<void(NetZone const&)> on_seal;
125 * @brief Create a host
127 * @param name Host name
128 * @param speed_per_pstate Vector of CPU's speeds
130 s4u::Host* create_host(const std::string& name, const std::vector<double>& speed_per_pstate);
131 s4u::Host* create_host(const std::string& name, double speed);
133 * @brief Create a Host (string version)
135 * @throw std::invalid_argument if speed format is incorrect.
137 s4u::Host* create_host(const std::string& name, const std::vector<std::string>& speed_per_pstate);
138 s4u::Host* create_host(const std::string& name, const std::string& speed);
141 * @brief Create a link
143 * @param name Link name
144 * @param bandwidths Link's speed (vector for wifi links)
145 * @throw std::invalid_argument if bandwidth format is incorrect.
147 s4u::Link* create_link(const std::string& name, const std::vector<double>& bandwidths);
148 s4u::Link* create_link(const std::string& name, double bandwidth);
150 /** @brief Create a link (string version) */
151 s4u::Link* create_link(const std::string& name, const std::vector<std::string>& bandwidths);
152 s4u::Link* create_link(const std::string& name, const std::string& bandwidth);
155 * @brief Create a split-duplex link
157 * In SimGrid, split-duplex links are a composition of 2 regular (shared) links (up/down).
159 * This function eases its utilization by creating the 2 links for you. We append a suffix
160 * "_UP" and "_DOWN" to your link name to identify each of them.
162 * Both up/down links have exactly the same bandwidth
164 * @param name Name of the link
165 * @param bandwidth Speed
167 s4u::SplitDuplexLink* create_split_duplex_link(const std::string& name, const std::string& bandwidth);
168 s4u::SplitDuplexLink* create_split_duplex_link(const std::string& name, double bandwidth);
170 kernel::resource::NetworkModelIntf* get_network_model() const;
173 * @brief Make a router within that NetZone
175 * @param name Router name
177 kernel::routing::NetPoint* create_router(const std::string& name);
179 /** @brief Seal this netzone configuration */
184 /** @brief XBT_ATTRIB_DEPRECATED_v332 Auxiliary function to convert types */
185 static std::vector<LinkInRoute> convert_to_linkInRoute(const std::vector<kernel::resource::LinkImpl*>& link_list);
189 // External constructors so that the types (and the types of their content) remain hidden
190 XBT_PUBLIC NetZone* create_full_zone(const std::string& name);
191 XBT_PUBLIC NetZone* create_star_zone(const std::string& name);
192 XBT_PUBLIC NetZone* create_dijkstra_zone(const std::string& name, bool cache);
193 XBT_PUBLIC NetZone* create_empty_zone(const std::string& name);
194 XBT_PUBLIC NetZone* create_floyd_zone(const std::string& name);
195 XBT_PUBLIC NetZone* create_vivaldi_zone(const std::string& name);
196 XBT_PUBLIC NetZone* create_wifi_zone(const std::string& name);
198 // Extra data structure for complex constructors
200 /** @brief Aggregates the callbacks used to build clusters netzones (Torus/Dragronfly/Fat-Tree) */
201 struct ClusterCallbacks {
203 * @brief Callback used to set the netpoint and gateway located at some leaf of clusters (Torus, FatTree, etc)
205 * The netpoint can be either a host, router or another netzone.
206 * Gateway must be non-null if netpoint is a netzone
208 * @param zone: The newly create zone, needed for creating new resources (hosts, links)
209 * @param coord: the coordinates of the element
210 * @param id: Internal identifier of the element
211 * @return pair<NetPoint*, NetPoint*>: returns a pair of netpoint and gateway.
213 using ClusterNetPointCb = std::pair<kernel::routing::NetPoint*, kernel::routing::NetPoint*>(
214 NetZone* zone, const std::vector<unsigned long>& coord, unsigned long id);
216 * @brief Callback used to set the links for some leaf of the cluster (Torus, FatTree, etc)
218 * The coord parameter depends on the cluster being created:
219 * - Torus: Direct translation of the Torus' dimensions, e.g. (0, 0, 0) for a 3-D Torus
220 * - Fat-Tree: A pair (level in the tree, id), e.g. (0, 0): first leaf and (1,0): first switch at level 1.
221 * - Dragonfly: a tuple (group, chassis, blades/routers, nodes), e.g. (0, 0, 0, 0) for first node in the cluster.
222 * Important: To identify the router inside a "group, chassis, blade", we use MAX_UINT in the last parameter (e.g. 0,
225 * @param zone: The newly create zone, needed for creating new resources (hosts, links)
226 * @param coord: the coordinates of the element
227 * @param id: Internal identifier of the element
228 * @return Pointer to the Link
230 using ClusterLinkCb = Link*(NetZone* zone, const std::vector<unsigned long>& coord, unsigned long id);
232 std::function<ClusterNetPointCb> netpoint;
233 std::function<ClusterLinkCb> loopback = {};
234 std::function<ClusterLinkCb> limiter = {};
235 explicit ClusterCallbacks(const std::function<ClusterNetPointCb>& set_netpoint)
236 : netpoint(set_netpoint){/*nothing to do */};
237 ClusterCallbacks(const std::function<ClusterNetPointCb>& set_netpoint,
238 const std::function<ClusterLinkCb>& set_loopback, const std::function<ClusterLinkCb>& set_limiter)
239 : netpoint(set_netpoint), loopback(set_loopback), limiter(set_limiter){/*nothing to do */};
242 * @brief Create a torus zone
244 * Torus clusters are characterized by:
245 * - dimensions, eg. {3,3,3} creates a torus with X = 3 elements, Y = 3 and Z = 3. In total, this cluster have 27
247 * - inter-node communication: (bandwidth, latency, sharing_policy) the elements are connected through regular links
248 * with these characteristics
249 * More details in: <a href="https://simgrid.org/doc/latest/Platform_examples.html?highlight=torus#torus-cluster">Torus
252 * Moreover, this method accepts 3 callbacks to populate the cluster: set_netpoint, set_loopback and set_limiter .
254 * Note that the all elements in a Torus cluster must have (or not) the same elements (loopback and limiter)
256 * @param name NetZone's name
257 * @param parent Pointer to parent's netzone (nullptr if root netzone). Needed to be able to create the resources inside
259 * @param dimensions List of positive integers (> 0) which determines the torus' dimensions
260 * @param set_callbacks Callbacks to set properties from cluster elements (netpoint, loopback and limiter)
261 * @param bandwidth Characteristics of the inter-nodes link
262 * @param latency Characteristics of the inter-nodes link
263 * @param sharing_policy Characteristics of the inter-nodes link
264 * @return Pointer to new netzone
266 XBT_PUBLIC NetZone* create_torus_zone(const std::string& name, const NetZone* parent,
267 const std::vector<unsigned long>& dimensions,
268 const ClusterCallbacks& set_callbacks, double bandwidth, double latency,
269 Link::SharingPolicy sharing_policy);
271 /** @brief Aggregates the parameters necessary to build a Fat-tree zone */
272 struct XBT_PUBLIC FatTreeParams {
274 std::vector<unsigned int> down;
275 std::vector<unsigned int> up;
276 std::vector<unsigned int> number;
277 FatTreeParams(unsigned int n_levels, const std::vector<unsigned int>& down_links,
278 const std::vector<unsigned int>& up_links, const std::vector<unsigned int>& links_number);
281 * @brief Create a Fat-Tree zone
283 * Fat-Tree clusters are characterized by:
284 * - levels: number of levels in the cluster, e.g. 2 (the final tree will have n+1 levels)
285 * - downlinks: for each level, how many connections between elements below them, e.g. 2, 3: level 1 nodes are connected
286 * to 2 nodes in level 2, which are connected to 3 nodes below. Determines the number total of leaves in the tree.
287 * - uplinks: for each level, how nodes are connected, e.g. 1, 2
288 * - link count: for each level, number of links connecting the nodes, e.g. 1, 1
290 * The best way to understand it is looking to the doc available in: <a
291 * href="https://simgrid.org/doc/latest/Platform_examples.html#fat-tree-cluster">Fat Tree Cluster</a>
293 * Moreover, this method accepts 3 callbacks to populate the cluster: set_netpoint, set_loopback and set_limiter .
295 * Note that the all elements in a Fat-Tree cluster must have (or not) the same elements (loopback and limiter)
297 * @param name NetZone's name
298 * @param parent Pointer to parent's netzone (nullptr if root netzone). Needed to be able to create the resources inside
300 * @param parameters Characteristics of this Fat-Tree
301 * @param set_callbacks Callbacks to set properties from cluster elements (netpoint, loopback and limiter)
302 * @param bandwidth Characteristics of the inter-nodes link
303 * @param latency Characteristics of the inter-nodes link
304 * @param sharing_policy Characteristics of the inter-nodes link
305 * @return Pointer to new netzone
307 XBT_PUBLIC NetZone* create_fatTree_zone(const std::string& name, const NetZone* parent, const FatTreeParams& parameters,
308 const ClusterCallbacks& set_callbacks, double bandwidth, double latency,
309 Link::SharingPolicy sharing_policy);
311 /** @brief Aggregates the parameters necessary to build a Dragonfly zone */
312 struct XBT_PUBLIC DragonflyParams {
313 std::pair<unsigned int, unsigned int> groups;
314 std::pair<unsigned int, unsigned int> chassis;
315 std::pair<unsigned int, unsigned int> routers;
317 DragonflyParams(const std::pair<unsigned int, unsigned int>& groups,
318 const std::pair<unsigned int, unsigned int>& chassis,
319 const std::pair<unsigned int, unsigned int>& routers, unsigned int nodes);
322 * @brief Create a Dragonfly zone
324 * Dragonfly clusters are characterized by:
325 * - groups: number of groups and links between each group, e.g. 2,2.
326 * - chassis: number of chassis in each group and the number of links used to connect the chassis, e.g. 2,3
327 * - routers: number of routers in each chassis and their links, e.g. 3,1
328 * - nodes: number of nodes connected to each router using a single link, e.g. 2
330 * In total, the cluster will have groups * chassis * routers * nodes elements/leaves.
332 * The best way to understand it is looking to the doc available in: <a
333 * href="https://simgrid.org/doc/latest/Platform_examples.html#dragonfly-cluster">Dragonfly Cluster</a>
335 * Moreover, this method accepts 3 callbacks to populate the cluster: set_netpoint, set_loopback and set_limiter .
337 * Note that the all elements in a Dragonfly cluster must have (or not) the same elements (loopback and limiter)
339 * @param name NetZone's name
340 * @param parent Pointer to parent's netzone (nullptr if root netzone). Needed to be able to create the resources inside
342 * @param parameters Characteristics of this Dragonfly
343 * @param set_callbacks Callbacks to set properties from cluster elements (netpoint, loopback and limiter)
344 * @param bandwidth Characteristics of the inter-nodes link
345 * @param latency Characteristics of the inter-nodes link
346 * @param sharing_policy Characteristics of the inter-nodes link
347 * @return Pointer to new netzone
349 XBT_PUBLIC NetZone* create_dragonfly_zone(const std::string& name, const NetZone* parent,
350 const DragonflyParams& parameters, const ClusterCallbacks& set_callbacks,
351 double bandwidth, double latency, Link::SharingPolicy sharing_policy);
354 } // namespace simgrid
356 #endif /* SIMGRID_S4U_NETZONE_HPP */