1 /* Copyright (c) 2014-2016. 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 #include "src/kernel/routing/AsClusterDragonfly.hpp"
7 #include "src/kernel/routing/NetCard.hpp"
8 #include "src/surf/network_interface.hpp"
9 #include "src/surf/xml/platf.hpp" // FIXME: move that back to the parsing area
11 #include <boost/algorithm/string/split.hpp>
12 #include <boost/algorithm/string/classification.hpp>
14 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route_cluster_dragonfly, surf_route_cluster, "Dragonfly Routing part of surf");
20 AsClusterDragonfly::AsClusterDragonfly(As* father, const char* name) : AsCluster(father, name)
24 AsClusterDragonfly::~AsClusterDragonfly() {
25 if(this->routers_ != nullptr){
26 for (unsigned int i=0; i<this->numGroups_*this->numChassisPerGroup_*this->numBladesPerChassis_;i++)
32 unsigned int *AsClusterDragonfly::rankId_to_coords(int rankId)
34 //coords : group, chassis, blade, node
35 unsigned int *coords = (unsigned int *) malloc(4 * sizeof(unsigned int));
36 coords[0] = rankId/ (numChassisPerGroup_*numBladesPerChassis_*numNodesPerBlade_);
37 rankId=rankId%(numChassisPerGroup_*numBladesPerChassis_*numNodesPerBlade_);
38 coords[1] = rankId/ (numBladesPerChassis_*numNodesPerBlade_);
39 rankId=rankId%(numBladesPerChassis_*numNodesPerBlade_);
40 coords[2] = rankId/ numNodesPerBlade_;
41 coords[3]=rankId%numNodesPerBlade_;
46 void AsClusterDragonfly::parse_specific_arguments(sg_platf_cluster_cbarg_t cluster) {
47 std::vector<std::string> parameters;
48 std::vector<std::string> tmp;
49 boost::split(parameters, cluster->topo_parameters, boost::is_any_of(";"));
51 // TODO : we have to check for zeros and negative numbers, or it might crash
52 if (parameters.size() != 4){
54 "Dragonfly are defined by the number of groups, chassis per groups, blades per chassis, nodes per blade");
57 // Blue network : number of groups, number of links between each group
58 boost::split(tmp, parameters[0], boost::is_any_of(","));
60 surf_parse_error("Dragonfly topologies are defined by 3 levels with 2 elements each, and one with one element");
63 this->numGroups_=xbt_str_parse_int(tmp[0].c_str(), "Invalid number of groups: %s");
64 this->numLinksBlue_=xbt_str_parse_int(tmp[1].c_str(), "Invalid number of links for the blue level: %s");
66 // Black network : number of chassis/group, number of links between each router on the black network
67 boost::split(tmp, parameters[1], boost::is_any_of(","));
69 surf_parse_error("Dragonfly topologies are defined by 3 levels with 2 elements each, and one with one element");
72 this->numChassisPerGroup_=xbt_str_parse_int(tmp[0].c_str(), "Invalid number of groups: %s");
73 this->numLinksBlack_=xbt_str_parse_int(tmp[1].c_str(), "Invalid number of links for the black level: %s");
76 // Green network : number of blades/chassis, number of links between each router on the green network
77 boost::split(tmp, parameters[2], boost::is_any_of(","));
79 surf_parse_error("Dragonfly topologies are defined by 3 levels with 2 elements each, and one with one element");
82 this->numBladesPerChassis_=xbt_str_parse_int(tmp[0].c_str(), "Invalid number of groups: %s");
83 this->numLinksGreen_=xbt_str_parse_int(tmp[1].c_str(), "Invalid number of links for the green level: %s");
86 // The last part of topo_parameters should be the number of nodes per blade
87 this->numNodesPerBlade_ = xbt_str_parse_int(parameters[3].c_str(), "Last parameter is not the amount of nodes per blade: %s");
88 this->cluster_ = cluster;
92 * Generate the cluster once every node is created
94 void AsClusterDragonfly::seal(){
95 if(this->numNodesPerBlade_ == 0) {
99 this->generateRouters();
100 this->generateLinks();
103 DragonflyRouter::DragonflyRouter(int group, int chassis, int blade):group_(group),chassis_(chassis),blade_(blade){ }
105 DragonflyRouter::~DragonflyRouter(){
106 if(this->myNodes_!=nullptr)
108 if(this->greenLinks_!=nullptr)
109 xbt_free(greenLinks_);
110 if(this->blackLinks_!=nullptr)
111 xbt_free(blackLinks_);
112 if(this->blueLinks_!=nullptr)
113 xbt_free(blueLinks_);
117 void AsClusterDragonfly::generateRouters() {
118 this->routers_=static_cast<DragonflyRouter**>(xbt_malloc0(this->numGroups_*this->numChassisPerGroup_*this->numBladesPerChassis_*sizeof(DragonflyRouter*)));
120 for(unsigned int i=0;i<this->numGroups_;i++){
121 for(unsigned int j=0;j<this->numChassisPerGroup_;j++){
122 for(unsigned int k=0;k<this->numBladesPerChassis_;k++){
123 DragonflyRouter* router = new DragonflyRouter(i,j,k);
124 this->routers_[i*this->numChassisPerGroup_*this->numBladesPerChassis_+j*this->numBladesPerChassis_+k]=router;
130 void AsClusterDragonfly::createLink(char* id, int numlinks, Link** linkup, Link** linkdown){
133 s_sg_platf_link_cbarg_t linkTemplate;
134 memset(&linkTemplate, 0, sizeof(linkTemplate));
135 linkTemplate.bandwidth = this->cluster_->bw * numlinks;
136 linkTemplate.latency = this->cluster_->lat;
137 linkTemplate.policy = this->cluster_->sharing_policy; // sthg to do with that ?
138 linkTemplate.id = id;
139 sg_platf_new_link(&linkTemplate);
140 XBT_DEBUG("Generating link %s", id);
143 if (this->cluster_->sharing_policy == SURF_LINK_FULLDUPLEX) {
144 tmpID = std::string(linkTemplate.id) + "_UP";
145 link = Link::byName(tmpID.c_str());
146 *linkup = link; // check link?
147 tmpID = std::string(linkTemplate.id) + "_DOWN";
148 link = Link::byName(tmpID.c_str());
149 *linkdown = link; // check link ?
152 link = Link::byName(linkTemplate.id);
157 free((void*)linkTemplate.id);
161 void AsClusterDragonfly::generateLinks() {
163 static int uniqueId = 0;
168 unsigned int numRouters = this->numGroups_*this->numChassisPerGroup_*this->numBladesPerChassis_;
170 if (this->cluster_->sharing_policy == SURF_LINK_FULLDUPLEX)
173 //Links from routers to their local nodes.
174 for(unsigned int i=0; i<numRouters;i++){
175 //allocate structures
176 this->routers_[i]->myNodes_=static_cast<Link**>(xbt_malloc0(numLinksperLink_*this->numNodesPerBlade_*sizeof(Link*)));
177 this->routers_[i]->greenLinks_=static_cast<Link**>(xbt_malloc0(this->numBladesPerChassis_*sizeof(Link*)));
178 this->routers_[i]->blackLinks_=static_cast<Link**>(xbt_malloc0(this->numChassisPerGroup_*sizeof(Link*)));
180 for(unsigned int j=0; j< numLinksperLink_*this->numNodesPerBlade_; j+=numLinksperLink_){
181 id = bprintf("local_link_from_router_%d_to_node_%d_%d", i, j/numLinksperLink_, uniqueId);
182 this->createLink(id, 1, &linkup, &linkdown);
183 if (this->cluster_->sharing_policy == SURF_LINK_FULLDUPLEX) {
184 this->routers_[i]->myNodes_[j] = linkup;
185 this->routers_[i]->myNodes_[j+1] = linkdown;
188 this->routers_[i]->myNodes_[j] = linkup;
194 //Green links from routers to same chassis routers - alltoall
195 for(unsigned int i=0; i<this->numGroups_*this->numChassisPerGroup_;i++){
196 for(unsigned int j=0; j<this->numBladesPerChassis_;j++){
197 for(unsigned int k=j+1;k<this->numBladesPerChassis_;k++){
198 id = bprintf("green_link_in_chassis_%d_between_routers_%d_and_%d_%d", i%numChassisPerGroup_, j, k, uniqueId);
199 this->createLink(id, this->numLinksGreen_, &linkup, &linkdown);
200 this->routers_[i*numBladesPerChassis_+j]->greenLinks_[k] = linkup;
201 this->routers_[i*numBladesPerChassis_+k]->greenLinks_[j] = linkdown;
207 //Black links from routers to same group routers - alltoall
208 for(unsigned int i=0; i<this->numGroups_;i++){
209 for(unsigned int j=0; j<this->numChassisPerGroup_;j++){
210 for(unsigned int k=j+1;k<this->numChassisPerGroup_;k++){
211 for(unsigned int l=0;l<this->numBladesPerChassis_;l++){
212 id = bprintf("black_link_in_group_%d_between_chassis_%d_and_%d_blade_%d_%d", i, j, k,l, uniqueId);
213 this->createLink(id, this->numLinksBlack_,&linkup, &linkdown);
214 this->routers_[i*numBladesPerChassis_*numChassisPerGroup_+j*numBladesPerChassis_+l]->blackLinks_[k] = linkup;
215 this->routers_[i*numBladesPerChassis_*numChassisPerGroup_+k*numBladesPerChassis_+l]->blackLinks_[j] = linkdown;
223 //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.
224 //FIXME: in reality blue links may be attached to several different routers
225 for(unsigned int i=0; i<this->numGroups_;i++){
226 for(unsigned int j=i+1; j<this->numGroups_;j++){
227 unsigned int routernumi=i*numBladesPerChassis_*numChassisPerGroup_+j;
228 unsigned int routernumj=j*numBladesPerChassis_*numChassisPerGroup_+i;
229 this->routers_[routernumi]->blueLinks_=static_cast<Link**>(xbt_malloc0(sizeof(Link*)));
230 this->routers_[routernumj]->blueLinks_=static_cast<Link**>(xbt_malloc0(sizeof(Link*)));
231 id = bprintf("blue_link_between_group_%d_and_%d_routers_%d_and_%d_%d", i, j, routernumi,routernumj, uniqueId);
232 this->createLink(id, this->numLinksBlue_, &linkup, &linkdown);
233 this->routers_[routernumi]->blueLinks_[0] = linkup;
234 this->routers_[routernumj]->blueLinks_[0] = linkdown;
240 void AsClusterDragonfly::getLocalRoute(NetCard* src, NetCard* dst, sg_platf_route_cbarg_t route, double* latency)
242 //Minimal routing version.
243 // TODO : non-minimal random one, and adaptive ?
245 if (dst->isRouter() || src->isRouter())
248 XBT_VERB("dragonfly getLocalRout from '%s'[%d] to '%s'[%d]", src->name().c_str(), src->id(), dst->name().c_str(),
251 if ((src->id() == dst->id()) && hasLoopback_) {
252 std::pair<Link*, Link*> info = privateLinks_.at(src->id() * linkCountPerNode_);
254 route->link_list->push_back(info.first);
256 *latency += info.first->latency();
260 unsigned int *myCoords = rankId_to_coords(src->id());
261 unsigned int *targetCoords = rankId_to_coords(dst->id());
262 XBT_DEBUG("src : %u group, %u chassis, %u blade, %u node", myCoords[0], myCoords[1], myCoords[2], myCoords[3]);
263 XBT_DEBUG("dst : %u group, %u chassis, %u blade, %u node", targetCoords[0], targetCoords[1], targetCoords[2], targetCoords[3]);
265 DragonflyRouter* myRouter = routers_[myCoords[0]*(numChassisPerGroup_*numBladesPerChassis_)+myCoords[1] * numBladesPerChassis_+myCoords[2]];
266 DragonflyRouter* targetRouter = routers_[targetCoords[0]*(numChassisPerGroup_*numBladesPerChassis_)+targetCoords[1] *numBladesPerChassis_ +targetCoords[2]];
267 DragonflyRouter* currentRouter=myRouter;
269 //node->router local link
270 route->link_list->push_back(myRouter->myNodes_[myCoords[3]*numLinksperLink_]);
272 *latency += myRouter->myNodes_[myCoords[3] * numLinksperLink_]->latency();
274 if (hasLimiter_) { // limiter for sender
275 std::pair<Link*, Link*> info = privateLinks_.at(src->id() * linkCountPerNode_ + hasLoopback_);
276 route->link_list->push_back(info.first);
279 if(targetRouter!=myRouter){
281 //are we on a different group ?
282 if(targetRouter->group_ != currentRouter->group_){
283 //go to the router of our group connected to this one.
284 if(currentRouter->blade_!=targetCoords[0]){
285 //go to the nth router in our chassis
286 route->link_list->push_back(currentRouter->greenLinks_[targetCoords[0]]);
288 *latency += currentRouter->greenLinks_[targetCoords[0]]->latency();
289 currentRouter=routers_[myCoords[0]*(numChassisPerGroup_*numBladesPerChassis_)+myCoords[1] * numBladesPerChassis_+targetCoords[0]];
292 if(currentRouter->chassis_!=0){
293 //go to the first chassis of our group
294 route->link_list->push_back(currentRouter->blackLinks_[0]);
296 *latency += currentRouter->blackLinks_[0]->latency();
297 currentRouter=routers_[myCoords[0]*(numChassisPerGroup_*numBladesPerChassis_)+targetCoords[0]];
300 //go to destination group - the only optical hop
301 route->link_list->push_back(currentRouter->blueLinks_[0]);
303 *latency += currentRouter->blueLinks_[0]->latency();
304 currentRouter=routers_[targetCoords[0]*(numChassisPerGroup_*numBladesPerChassis_)+myCoords[0]];
308 //same group, but same blade ?
309 if(targetRouter->blade_ != currentRouter->blade_){
310 route->link_list->push_back(currentRouter->greenLinks_[targetCoords[2]]);
312 *latency += currentRouter->greenLinks_[targetCoords[2]]->latency();
313 currentRouter=routers_[targetCoords[0]*(numChassisPerGroup_*numBladesPerChassis_)+targetCoords[2]];
316 //same blade, but same chassis ?
317 if(targetRouter->chassis_ != currentRouter->chassis_){
318 route->link_list->push_back(currentRouter->blackLinks_[targetCoords[1]]);
320 *latency += currentRouter->blackLinks_[targetCoords[1]]->latency();
321 currentRouter=routers_[targetCoords[0]*(numChassisPerGroup_*numBladesPerChassis_)+targetCoords[1]*numBladesPerChassis_+targetCoords[2]];
325 if (hasLimiter_) { // limiter for receiver
326 std::pair<Link*, Link*> info = privateLinks_.at(dst->id() * linkCountPerNode_ + hasLoopback_);
327 route->link_list->push_back(info.first);
330 //router->node local link
331 route->link_list->push_back(targetRouter->myNodes_[targetCoords[3]*numLinksperLink_+numLinksperLink_-1]);
333 *latency += targetRouter->myNodes_[targetCoords[3] * numLinksperLink_ + numLinksperLink_ - 1]->latency();
336 xbt_free(targetCoords);