X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/8c272bc83bed049c84b9eb1155edbc1d01baaafb..831de10adaaf8910940aa280e2ac2dd075b5ffe5:/src/kernel/routing/AsClusterDragonfly.cpp

diff --git a/src/kernel/routing/AsClusterDragonfly.cpp b/src/kernel/routing/AsClusterDragonfly.cpp
new file mode 100644
index 0000000000..0a2f42f59a
--- /dev/null
+++ b/src/kernel/routing/AsClusterDragonfly.cpp
@@ -0,0 +1,345 @@
+/* Copyright (c) 2014-2016. The SimGrid Team. All rights reserved.          */
+
+/* This program is free software; you can redistribute it and/or modify it
+ * under the terms of the license (GNU LGPL) which comes with this package. */
+
+#include "src/kernel/routing/AsClusterDragonfly.hpp"
+#include "src/surf/network_interface.hpp"
+#include "src/surf/xml/platf.hpp" // FIXME: move that back to the parsing area
+
+#include <boost/algorithm/string/split.hpp>
+#include <boost/algorithm/string/classification.hpp>
+
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route_cluster_dragonfly, surf_route_cluster, "Dragonfly Routing part of surf");
+
+namespace simgrid {
+namespace routing {
+
+AsClusterDragonfly::AsClusterDragonfly(const char*name)
+  : AsCluster(name) {
+}
+
+AsClusterDragonfly::~AsClusterDragonfly() {
+  if(this->routers_ != nullptr){
+    for (unsigned int i=0; i<this->numGroups_*this->numChassisPerGroup_*this->numBladesPerChassis_;i++)
+        delete(routers_[i]);
+    xbt_free(routers_);
+  }
+}
+
+unsigned int *AsClusterDragonfly::rankId_to_coords(int rankId)
+{
+  //coords : group, chassis, blade, node
+  unsigned int *coords = (unsigned int *) malloc(4 * sizeof(unsigned int));
+  coords[0] = rankId/ (numChassisPerGroup_*numBladesPerChassis_*numNodesPerBlade_);
+  rankId=rankId%(numChassisPerGroup_*numBladesPerChassis_*numNodesPerBlade_);
+  coords[1] = rankId/ (numBladesPerChassis_*numNodesPerBlade_);
+  rankId=rankId%(numBladesPerChassis_*numNodesPerBlade_);
+  coords[2] = rankId/ numNodesPerBlade_;
+  coords[3]=rankId%numNodesPerBlade_;
+
+  return coords;
+}
+
+void AsClusterDragonfly::parse_specific_arguments(sg_platf_cluster_cbarg_t cluster) {
+  std::vector<std::string> parameters;
+  std::vector<std::string> tmp;
+  boost::split(parameters, cluster->topo_parameters, boost::is_any_of(";"));
+
+  // TODO : we have to check for zeros and negative numbers, or it might crash
+  if (parameters.size() != 4){
+    surf_parse_error("Dragonfly are defined by the number of groups, chassiss per groups, blades per chassis, nodes per blade");
+  }
+
+  // Blue network : number of groups, number of links between each group
+  boost::split(tmp, parameters[0], boost::is_any_of(","));
+  if(tmp.size() != 2) {
+    surf_parse_error("Dragonfly topologies are defined by 3 levels with 2 elements each, and one with one element");
+  }
+
+  this->numGroups_=xbt_str_parse_int(tmp[0].c_str(), "Invalid number of groups: %s");
+  this->numLinksBlue_=xbt_str_parse_int(tmp[1].c_str(), "Invalid number of links for the blue level: %s");
+
+ // Black network : number of chassiss/group, number of links between each router on the black network
+  boost::split(tmp, parameters[1], boost::is_any_of(","));
+  if(tmp.size() != 2) {
+    surf_parse_error("Dragonfly topologies are defined by 3 levels with 2 elements each, and one with one element");
+  }
+
+  this->numChassisPerGroup_=xbt_str_parse_int(tmp[0].c_str(), "Invalid number of groups: %s");
+  this->numLinksBlack_=xbt_str_parse_int(tmp[1].c_str(), "Invalid number of links  for the black level: %s");
+
+
+ // Green network : number of blades/chassis, number of links between each router on the green network
+  boost::split(tmp, parameters[2], boost::is_any_of(","));
+  if(tmp.size() != 2) {
+    surf_parse_error("Dragonfly topologies are defined by 3 levels with 2 elements each, and one with one element");
+  }
+
+  this->numBladesPerChassis_=xbt_str_parse_int(tmp[0].c_str(), "Invalid number of groups: %s");
+  this->numLinksGreen_=xbt_str_parse_int(tmp[1].c_str(), "Invalid number of links for the green level: %s");
+
+
+  // The last part of topo_parameters should be the number of nodes per blade
+  this->numNodesPerBlade_ = xbt_str_parse_int(parameters[3].c_str(), "Last parameter is not the amount of nodes per blade: %s");
+  this->cluster_ = cluster;
+}
+
+/*
+* Generate the cluster once every node is created
+*/
+void AsClusterDragonfly::seal(){
+  if(this->numNodesPerBlade_ == 0) {
+    return;
+  }
+
+  this->generateRouters();
+  this->generateLinks();
+}
+
+DragonflyRouter::DragonflyRouter(int group, int chassis, int blade):group_(group),chassis_(chassis),blade_(blade){ }
+
+DragonflyRouter::~DragonflyRouter(){
+  if(this->myNodes_!=nullptr)
+    xbt_free(myNodes_);
+  if(this->greenLinks_!=nullptr)
+    xbt_free(greenLinks_);
+  if(this->blackLinks_!=nullptr)
+    xbt_free(blackLinks_);
+  if(this->blueLinks_!=nullptr)
+    xbt_free(blueLinks_);
+}
+
+
+void AsClusterDragonfly::generateRouters() {
+  this->routers_=static_cast<DragonflyRouter**>(xbt_malloc0(this->numGroups_*this->numChassisPerGroup_*this->numBladesPerChassis_*sizeof(DragonflyRouter*)));
+
+  for(unsigned int i=0;i<this->numGroups_;i++){
+    for(unsigned int j=0;j<this->numChassisPerGroup_;j++){
+      for(unsigned int k=0;k<this->numBladesPerChassis_;k++){
+        DragonflyRouter* router = new DragonflyRouter(i,j,k);
+        this->routers_[i*this->numChassisPerGroup_*this->numBladesPerChassis_+j*this->numBladesPerChassis_+k]=router;
+      }
+    }
+  }
+}
+
+void AsClusterDragonfly::createLink(char* id, int numlinks, Link** linkup, Link** linkdown){
+  *linkup=nullptr;
+  *linkdown=nullptr;
+  s_sg_platf_link_cbarg_t linkTemplate;
+  memset(&linkTemplate, 0, sizeof(linkTemplate));
+  linkTemplate.bandwidth = this->cluster_->bw * numlinks;
+  linkTemplate.latency = this->cluster_->lat;
+  linkTemplate.policy = this->cluster_->sharing_policy; // sthg to do with that ?
+  linkTemplate.id = id;
+  sg_platf_new_link(&linkTemplate);
+  XBT_DEBUG("Generating link %s", id);
+  Link* link;
+  std::string tmpID;
+  if (this->cluster_->sharing_policy == SURF_LINK_FULLDUPLEX) {
+    tmpID = std::string(linkTemplate.id) + "_UP";
+    link =  Link::byName(tmpID.c_str());
+    *linkup = link; // check link?
+    tmpID = std::string(linkTemplate.id) + "_DOWN";
+    link = Link::byName(tmpID.c_str());
+    *linkdown = link; // check link ?
+  }
+  else {
+    link = Link::byName(linkTemplate.id);
+    *linkup = link;
+    *linkdown = link;
+  }
+
+  free((void*)linkTemplate.id);
+}
+
+
+void AsClusterDragonfly::generateLinks() {
+
+  static int uniqueId = 0;
+  char* id = nullptr;
+  Link* linkup;
+  Link *linkdown;
+
+  unsigned int numRouters = this->numGroups_*this->numChassisPerGroup_*this->numBladesPerChassis_;
+
+  if (this->cluster_->sharing_policy == SURF_LINK_FULLDUPLEX)
+    numLinksperLink_=2;
+
+  //Links from routers to their local nodes.
+  for(unsigned int i=0; i<numRouters;i++){
+  //allocate structures
+    this->routers_[i]->myNodes_=static_cast<Link**>(xbt_malloc0(numLinksperLink_*this->numNodesPerBlade_*sizeof(Link*)));
+    this->routers_[i]->greenLinks_=static_cast<Link**>(xbt_malloc0(this->numBladesPerChassis_*sizeof(Link*)));
+    this->routers_[i]->blackLinks_=static_cast<Link**>(xbt_malloc0(this->numChassisPerGroup_*sizeof(Link*)));
+
+    for(unsigned int j=0; j< numLinksperLink_*this->numNodesPerBlade_; j+=numLinksperLink_){
+      id = bprintf("local_link_from_router_%d_to_node_%d_%d", i, j/numLinksperLink_, uniqueId);
+      this->createLink(id, 1, &linkup, &linkdown);
+      if (this->cluster_->sharing_policy == SURF_LINK_FULLDUPLEX) {
+        this->routers_[i]->myNodes_[j] = linkup; 
+        this->routers_[i]->myNodes_[j+1] = linkdown; 
+      }
+      else {
+        this->routers_[i]->myNodes_[j] = linkup;
+      }
+      uniqueId++;
+    }
+  }
+
+  //Green links from routers to same chassis routers - alltoall
+  for(unsigned int i=0; i<this->numGroups_*this->numChassisPerGroup_;i++){
+    for(unsigned int j=0; j<this->numBladesPerChassis_;j++){
+      for(unsigned int k=j+1;k<this->numBladesPerChassis_;k++){
+        id = bprintf("green_link_in_chassis_%d_between_routers_%d_and_%d_%d", i%numChassisPerGroup_, j, k, uniqueId);
+        this->createLink(id, this->numLinksGreen_, &linkup, &linkdown);
+        this->routers_[i*numBladesPerChassis_+j]->greenLinks_[k] = linkup;
+        this->routers_[i*numBladesPerChassis_+k]->greenLinks_[j] = linkdown; 
+        uniqueId++;
+      }
+    }
+  }
+
+  //Black links from routers to same group routers - alltoall
+  for(unsigned int i=0; i<this->numGroups_;i++){
+    for(unsigned int j=0; j<this->numChassisPerGroup_;j++){
+      for(unsigned int k=j+1;k<this->numChassisPerGroup_;k++){
+        for(unsigned int l=0;l<this->numBladesPerChassis_;l++){
+          id = bprintf("black_link_in_group_%d_between_chassis_%d_and_%d_blade_%d_%d", i, j, k,l, uniqueId);
+          this->createLink(id, this->numLinksBlack_,&linkup, &linkdown);
+          this->routers_[i*numBladesPerChassis_*numChassisPerGroup_+j*numBladesPerChassis_+l]->blackLinks_[k] = linkup;
+          this->routers_[i*numBladesPerChassis_*numChassisPerGroup_+k*numBladesPerChassis_+l]->blackLinks_[j] = linkdown; 
+          uniqueId++;
+        }
+      }
+    }
+  }
+
+
+  //Blue links between groups - Not all routers involved, only one per group is linked to others. Let's say router n of each group is linked to group n.
+//FIXME: in reality blue links may be attached to several different routers
+  for(unsigned int i=0; i<this->numGroups_;i++){
+    for(unsigned int j=i+1; j<this->numGroups_;j++){
+      unsigned int routernumi=i*numBladesPerChassis_*numChassisPerGroup_+j;
+      unsigned int routernumj=j*numBladesPerChassis_*numChassisPerGroup_+i;
+      this->routers_[routernumi]->blueLinks_=static_cast<Link**>(xbt_malloc0(sizeof(Link*)));
+      this->routers_[routernumj]->blueLinks_=static_cast<Link**>(xbt_malloc0(sizeof(Link*)));
+        id = bprintf("blue_link_between_group_%d_and_%d_routers_%d_and_%d_%d", i, j, routernumi,routernumj, uniqueId);
+        this->createLink(id, this->numLinksBlue_, &linkup, &linkdown);
+        this->routers_[routernumi]->blueLinks_[0] = linkup;
+        this->routers_[routernumj]->blueLinks_[0] = linkdown; 
+        uniqueId++;
+    }
+  }
+}
+
+void AsClusterDragonfly::getRouteAndLatency(NetCard * src, NetCard * dst, sg_platf_route_cbarg_t route, double *latency) {
+  //Minimal routing version.
+  // TODO : non-minimal random one, and adaptive ?
+
+  if (dst->isRouter() || src->isRouter())
+    return;
+
+  XBT_VERB("dragonfly_get_route_and_latency from '%s'[%d] to '%s'[%d]", src->name(), src->id(), dst->name(), dst->id());
+
+  if ((src->id() == dst->id()) && hasLoopback_) {
+     s_surf_parsing_link_up_down_t info = xbt_dynar_get_as(privateLinks_, src->id() * linkCountPerNode_, s_surf_parsing_link_up_down_t);
+
+     route->link_list->push_back(info.linkUp);
+     if (latency)
+       *latency += info.linkUp->getLatency();
+     return;
+  }
+
+  unsigned int *myCoords = rankId_to_coords(src->id());
+  unsigned int *targetCoords = rankId_to_coords(dst->id());
+  XBT_DEBUG("src : %u group, %u chassis, %u blade, %u node", myCoords[0], myCoords[1], myCoords[2], myCoords[3]);
+  XBT_DEBUG("dst : %u group, %u chassis, %u blade, %u node", targetCoords[0], targetCoords[1], targetCoords[2], targetCoords[3]);
+
+  DragonflyRouter* myRouter = routers_[myCoords[0]*(numChassisPerGroup_*numBladesPerChassis_)+myCoords[1] * numBladesPerChassis_+myCoords[2]];
+  DragonflyRouter* targetRouter = routers_[targetCoords[0]*(numChassisPerGroup_*numBladesPerChassis_)+targetCoords[1] *numBladesPerChassis_ +targetCoords[2]];
+  DragonflyRouter* currentRouter=myRouter;
+
+  //node->router local link
+  route->link_list->push_back(myRouter->myNodes_[myCoords[3]*numLinksperLink_]);
+  if(latency) {
+    *latency += myRouter->myNodes_[myCoords[3]*numLinksperLink_]->getLatency();
+  }
+
+  if (hasLimiter_) {    // limiter for sender
+    s_surf_parsing_link_up_down_t info;
+    info = xbt_dynar_get_as(privateLinks_, src->id() * linkCountPerNode_ + hasLoopback_, s_surf_parsing_link_up_down_t);
+    route->link_list->push_back(info.linkUp);
+  }
+
+  if(targetRouter!=myRouter){
+
+    //are we on a different group ?
+    if(targetRouter->group_ != currentRouter->group_){
+      //go to the router of our group connected to this one.
+      if(currentRouter->blade_!=targetCoords[0]){
+        //go to the nth router in our chassis
+        route->link_list->push_back(currentRouter->greenLinks_[targetCoords[0]]);
+        if(latency) {
+          *latency += currentRouter->greenLinks_[targetCoords[0]]->getLatency();
+        }
+        currentRouter=routers_[myCoords[0]*(numChassisPerGroup_*numBladesPerChassis_)+myCoords[1] * numBladesPerChassis_+targetCoords[0]];
+      }
+
+      if(currentRouter->chassis_!=0){
+        //go to the first chassis of our group
+        route->link_list->push_back(currentRouter->blackLinks_[0]);
+        if(latency) {
+          *latency += currentRouter->blackLinks_[0]->getLatency();
+        }
+        currentRouter=routers_[myCoords[0]*(numChassisPerGroup_*numBladesPerChassis_)+targetCoords[0]];
+      }
+
+      //go to destination group - the only optical hop 
+      route->link_list->push_back(currentRouter->blueLinks_[0]);
+      if(latency) {
+        *latency += currentRouter->blueLinks_[0]->getLatency();
+      }
+      currentRouter=routers_[targetCoords[0]*(numChassisPerGroup_*numBladesPerChassis_)+myCoords[0]];
+    }
+
+    
+    //same group, but same blade ?
+    if(targetRouter->blade_ != currentRouter->blade_){
+      route->link_list->push_back(currentRouter->greenLinks_[targetCoords[2]]);
+      if(latency) {
+        *latency += currentRouter->greenLinks_[targetCoords[2]]->getLatency();
+      }
+      currentRouter=routers_[targetCoords[0]*(numChassisPerGroup_*numBladesPerChassis_)+targetCoords[2]];
+    }
+
+    //same blade, but same chassis ?
+    if(targetRouter->chassis_ != currentRouter->chassis_){
+      route->link_list->push_back(currentRouter->blackLinks_[targetCoords[1]]);
+      if(latency) {
+        *latency += currentRouter->blackLinks_[targetCoords[1]]->getLatency();
+      }
+      currentRouter=routers_[targetCoords[0]*(numChassisPerGroup_*numBladesPerChassis_)+targetCoords[1]*numBladesPerChassis_+targetCoords[2]];
+    }
+  }
+
+  if (hasLimiter_) {    // limiter for receiver
+    s_surf_parsing_link_up_down_t info;
+    info = xbt_dynar_get_as(privateLinks_, dst->id() * linkCountPerNode_ + hasLoopback_, s_surf_parsing_link_up_down_t);
+    route->link_list->push_back(info.linkUp);
+  }
+
+  //router->node local link
+  route->link_list->push_back(targetRouter->myNodes_[targetCoords[3]*numLinksperLink_+numLinksperLink_-1]);
+  if(latency) {
+    *latency += targetRouter->myNodes_[targetCoords[3]*numLinksperLink_+numLinksperLink_-1]->getLatency();
+  }
+
+  xbt_free(myCoords);
+  xbt_free(targetCoords);
+
+  
+}
+  }
+}