+
+#include "network_ib.hpp"
+#include "simgrid/sg_config.h"
+#include "maxmin_private.hpp"
+
+XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_network);
+
+double Bs=0.925;
+double Be=0.965;
+double ys=1.35;
+
+
+static void IB_create_host_callback(sg_platf_host_cbarg_t t){
+
+ static int id=0;
+// pour t->id -> rajouter une nouvelle struct dans le dict, pour stocker les comms actives
+ if(((NetworkIBModel*)surf_network_model)->active_nodes==NULL)
+ ((NetworkIBModel*)surf_network_model)->active_nodes=xbt_dict_new();
+
+ IBNode* act = new IBNode(id);
+
+ id++;
+ xbt_dict_set(((NetworkIBModel*)surf_network_model)->active_nodes, t->id, act, NULL);
+
+}
+
+static void IB_action_state_changed_callback(NetworkActionPtr action, e_surf_action_state_t statein, e_surf_action_state_t stateout){
+ if(statein!=SURF_ACTION_RUNNING|| stateout!=SURF_ACTION_DONE)
+ return;
+ std::pair<IBNode*,IBNode*> pair = ((NetworkIBModel*)surf_network_model)->active_comms[action];
+ XBT_VERB("action %p finished", action);
+
+ ((NetworkIBModel*)surf_network_model)->updateIBfactors(action, pair.first, pair.second, 1);
+
+ ((NetworkIBModel*)surf_network_model)->active_comms.erase(action);
+
+}
+
+
+static void IB_action_init_callback(NetworkActionPtr action,RoutingEdgePtr src, RoutingEdgePtr dst, double size, double rate){
+ if(((NetworkIBModel*)surf_network_model)->active_nodes==NULL)
+ xbt_die("IB comm added, without any node connected !");
+
+ IBNode* act_src= (IBNode*) xbt_dict_get_or_null(((NetworkIBModel*)surf_network_model)->active_nodes, src->getName());
+ if(act_src==NULL)
+ xbt_die("could not find src node active comms !");
+ //act_src->rate=rate;
+
+ IBNode* act_dst= (IBNode*) xbt_dict_get_or_null(((NetworkIBModel*)surf_network_model)->active_nodes, dst->getName());
+ if(act_dst==NULL)
+ xbt_die("could not find dst node active comms !");
+ // act_dst->rate=rate;
+
+ ((NetworkIBModel*)surf_network_model)->active_comms[action]=make_pair<IBNode*,IBNode*>(act_src, act_dst);
+ //post the action in the second dist, to retrieve in the other callback
+ XBT_VERB("action %p init", action);
+
+ ((NetworkIBModel*)surf_network_model)->updateIBfactors(action, act_src, act_dst, 0);
+
+}
+
+
+
+/*********
+ * Model *
+ *********/
+
+/************************************************************************/
+/* New model based on MPI contention model for Infiniband platforms */
+/************************************************************************/
+/* @Inproceedings{mescal_vienne_phd, */
+/* author={Jérôme Vienne}, */
+/* title={prédiction de performances d’applications de calcul haute performance sur réseau Infiniband}, */
+/* address={Grenoble FRANCE}, */
+/* month=june, */
+/* year={2010} */
+/* } */
+void surf_network_model_init_IB(void)
+{
+
+ if (surf_network_model)
+ return;
+ surf_network_model = new NetworkIBModel();
+ net_define_callbacks();
+ xbt_dynar_push(model_list, &surf_network_model);
+ surf_callback_connect(networkActionStateChangedCallbacks, IB_action_state_changed_callback);
+ surf_callback_connect(networkCommunicateCallbacks, IB_action_init_callback);
+
+ sg_platf_host_add_cb(IB_create_host_callback);
+ xbt_cfg_setdefault_double(_sg_cfg_set, "network/weight_S", 8775);
+}
+
+NetworkIBModel::NetworkIBModel()
+ : NetworkSmpiModel() {
+ m_haveGap=false;
+ active_nodes=NULL;
+}
+
+NetworkIBModel::~NetworkIBModel()
+{
+ xbt_dict_cursor_t cursor = NULL;
+ IBNode* instance = NULL;
+ char *name = NULL;
+ xbt_dict_foreach(active_nodes, cursor, name, instance)
+ delete instance;
+ xbt_dict_free(&active_nodes);
+}
+
+void NetworkIBModel::computeIBfactors(IBNode *root) {
+ double penalized_bw=0.0;
+ double num_comm_out = (double) root->ActiveCommsUp.size();
+ double max_penalty_out=0.0;
+ //first, compute all outbound penalties to get their max
+ for (std::vector<ActiveComm*>::iterator it= root->ActiveCommsUp.begin(); it != root->ActiveCommsUp.end(); ++it) {
+ double my_penalty_out = 1.0;
+
+ if(num_comm_out!=1){
+ if((*it)->destination->nbActiveCommsDown > 2)//number of comms sent to the receiving node
+ my_penalty_out = num_comm_out * Bs * ys;
+ else
+ my_penalty_out = num_comm_out * Bs;
+ }
+
+ max_penalty_out = max(max_penalty_out,my_penalty_out);
+ }
+
+ for (std::vector<ActiveComm*>::iterator it= root->ActiveCommsUp.begin(); it != root->ActiveCommsUp.end(); ++it) {
+
+ //compute inbound penalty
+ double my_penalty_in = 1.0;
+ int nb_comms = (*it)->destination->nbActiveCommsDown;//total number of incoming comms
+ if(nb_comms!=1)
+ my_penalty_in = ((*it)->destination->ActiveCommsDown)[root] //number of comm sent to dest by root node
+ * Be
+ * (*it)->destination->ActiveCommsDown.size();//number of different nodes sending to dest
+
+ double penalty=max(my_penalty_in,max_penalty_out);
+
+ double rate_before_update = (*it)->action->getBound();
+ //save initial rate of the action
+ if((*it)->init_rate==-1)
+ (*it)->init_rate= rate_before_update;
+
+ penalized_bw= ! num_comm_out ? (*it)->init_rate : (*it)->init_rate /penalty;
+
+ if (!double_equals(penalized_bw, rate_before_update, sg_surf_precision)){
+ // XBT_VERB("%d->%d action %p penalty updated : in %f, out %f, final %f, before %f , initial rate %f", root->id,(*it)->destination->id,(*it)->action,my_penalty_in,my_penalty_out,penalized_bw, (*it)->action->getBound(), (*it)->init_rate );
+ lmm_update_variable_bound(p_maxminSystem, (*it)->action->getVariable(), penalized_bw);
+ }/*else{
+ // XBT_VERB("%d->%d action %p penalty not updated : in %f, out %f, final %f, initial rate %f", root->id,(*it)->destination->id,(*it)->action,my_penalty_in,my_penalty_out,penalized_bw, (*it)->init_rate );
+ }*/
+
+ }
+ XBT_VERB("Finished computing");
+}
+
+void NetworkIBModel::updateIBfactors_rec(IBNode *root, bool* updatedlist) {
+ if(updatedlist[root->id]==0){
+ XBT_VERB("Updating rec %d", root->id);
+ computeIBfactors(root);
+ updatedlist[root->id]=1;
+ for (std::vector<ActiveComm*>::iterator it= root->ActiveCommsUp.begin(); it != root->ActiveCommsUp.end(); ++it) {
+ if(updatedlist[(*it)->destination->id]!=1)
+ updateIBfactors_rec((*it)->destination, updatedlist);
+ }
+ for (std::map<IBNode*, int>::iterator it= root->ActiveCommsDown.begin(); it != root->ActiveCommsDown.end(); ++it) {
+ if(updatedlist[it->first->id]!=1)
+ updateIBfactors_rec(it->first, updatedlist);
+ }
+ }
+}
+
+
+void NetworkIBModel::updateIBfactors(NetworkActionPtr action, IBNode *from, IBNode * to, int remove) {
+ if (from == to)//disregard local comms (should use loopback)
+ return;
+
+ bool* updated=(bool*)xbt_malloc0(xbt_dict_size(active_nodes)*sizeof(bool));
+ ActiveComm* comm=NULL;
+ if(remove){
+ if(to->ActiveCommsDown[from]==1)
+ to->ActiveCommsDown.erase(from);
+ else
+ to->ActiveCommsDown[from]-=1;
+
+ to->nbActiveCommsDown--;
+ for (std::vector<ActiveComm*>::iterator it= from->ActiveCommsUp.begin();
+ it != from->ActiveCommsUp.end(); ++it) {
+ XBT_VERB("inside vector");
+ if((*it)->action==action){
+ comm=(*it);
+ from->ActiveCommsUp.erase(it);
+ XBT_VERB("action deleted");
+ break;
+ }
+ }
+ action->unref();
+ /*from->ActiveCommsUp.erase(
+ std::remove(from->ActiveCommsUp.begin(),
+ from->ActiveCommsUp.end(), make_pair(to, action)),
+ from->ActiveCommsUp.end());*/
+
+ }else{
+ //from->ActiveCommsUp.push_back(std::make_pair(to, action));
+ action->ref();
+
+ ActiveComm* comm=new ActiveComm();
+ comm->action=action;
+ comm->destination=to;
+ from->ActiveCommsUp.push_back(comm);
+
+ to->ActiveCommsDown[from]+=1;
+ to->nbActiveCommsDown++;
+ }
+ XBT_VERB("Updating %d", from->id);
+ updateIBfactors_rec(from, updated);
+ XBT_VERB("Finished updating %d", from->id);
+ if(comm)delete comm;
+ xbt_free(updated);
+}
