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/surf/AsClusterDragonfly.hpp"
7 #include "src/surf/network_interface.hpp"
8 #include "src/surf/xml/platf.hpp" // FIXME: move that back to the parsing area
10 #include <boost/algorithm/string/split.hpp>
11 #include <boost/algorithm/string/classification.hpp>
13 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route_cluster_dragonfly, surf_route_cluster, "Dragonfly Routing part of surf");
20 AsClusterDragonfly::AsClusterDragonfly(const char*name)
24 AsClusterDragonfly::~AsClusterDragonfly() {
26 if(this->routers_!=nullptr){
28 for (i=0; i<this->numGroups_*this->numChassisPerGroup_*this->numBladesPerChassis_;i++)
34 unsigned int *AsClusterDragonfly::rankId_to_coords(int rankId)
37 //coords : group, chassis, blade, node
38 unsigned int *coords = (unsigned int *) malloc(4 * sizeof(unsigned int));
39 coords[0] = rankId/ (numChassisPerGroup_*numBladesPerChassis_*numNodesPerBlade_);
40 rankId=rankId%(numChassisPerGroup_*numBladesPerChassis_*numNodesPerBlade_);
41 coords[1] = rankId/ (numBladesPerChassis_*numNodesPerBlade_);
42 rankId=rankId%(numBladesPerChassis_*numNodesPerBlade_);
43 coords[2] = rankId/ numNodesPerBlade_;
44 coords[3]=rankId%numNodesPerBlade_;
49 void AsClusterDragonfly::parse_specific_arguments(sg_platf_cluster_cbarg_t cluster) {
50 std::vector<std::string> parameters;
51 std::vector<std::string> tmp;
52 boost::split(parameters, cluster->topo_parameters, boost::is_any_of(";"));
54 // TODO : we have to check for zeros and negative numbers, or it might crash
55 if (parameters.size() != 4){
56 surf_parse_error("Dragonfly are defined by the number of groups, chassiss per groups, blades per chassis, nodes per blade");
59 // Blue network : number of groups, number of links between each group
60 boost::split(tmp, parameters[0], boost::is_any_of(","));
62 surf_parse_error("Dragonfly topologies are defined by 3 levels with 2 elements each, and one with one element");
65 this->numGroups_=xbt_str_parse_int(tmp[0].c_str(), "Invalid number of groups: %s");
66 this->numLinksBlue_=xbt_str_parse_int(tmp[1].c_str(), "Invalid number of links for the blue level: %s");
68 // Black network : number of chassiss/group, number of links between each router on the black network
69 boost::split(tmp, parameters[1], boost::is_any_of(","));
71 surf_parse_error("Dragonfly topologies are defined by 3 levels with 2 elements each, and one with one element");
74 this->numChassisPerGroup_=xbt_str_parse_int(tmp[0].c_str(), "Invalid number of groups: %s");
75 this->numLinksBlack_=xbt_str_parse_int(tmp[1].c_str(), "Invalid number of links for the black level: %s");
78 // Green network : number of blades/chassis, number of links between each router on the green network
79 boost::split(tmp, parameters[2], boost::is_any_of(","));
81 surf_parse_error("Dragonfly topologies are defined by 3 levels with 2 elements each, and one with one element");
84 this->numBladesPerChassis_=xbt_str_parse_int(tmp[0].c_str(), "Invalid number of groups: %s");
85 this->numLinksGreen_=xbt_str_parse_int(tmp[1].c_str(), "Invalid number of links for the green level: %s");
88 // The last part of topo_parameters should be the number of nodes per blade
89 this->numNodesPerBlade_ = xbt_str_parse_int(parameters[3].c_str(), "Last parameter is not the amount of nodes per blade: %s");
90 this->cluster_ = cluster;
94 * Generate the cluster once every node is created
96 void AsClusterDragonfly::seal(){
97 if(this->numNodesPerBlade_ == 0) {
101 this->generateRouters();
102 this->generateLinks();
105 DragonflyRouter::DragonflyRouter(int group, int chassis, int blade){
107 this->chassis_=chassis;
111 DragonflyRouter::~DragonflyRouter(){
112 if(this->myNodes_!=nullptr)
114 if(this->greenLinks_!=nullptr)
115 xbt_free(greenLinks_);
116 if(this->blackLinks_!=nullptr)
117 xbt_free(blackLinks_);
118 if(this->blueLinks_!=nullptr)
119 xbt_free(blueLinks_);
123 void AsClusterDragonfly::generateRouters() {
125 unsigned int i, j, k;
127 this->routers_=(DragonflyRouter**)xbt_malloc0(this->numGroups_*this->numChassisPerGroup_*this->numBladesPerChassis_*sizeof(DragonflyRouter*));
129 for(i=0;i<this->numGroups_;i++){
130 for(j=0;j<this->numChassisPerGroup_;j++){
131 for(k=0;k<this->numBladesPerChassis_;k++){
132 DragonflyRouter* router = new DragonflyRouter(i,j,k);
133 this->routers_[i*this->numChassisPerGroup_*this->numBladesPerChassis_+j*this->numBladesPerChassis_+k]=router;
141 void AsClusterDragonfly::createLink(char* id, int numlinks, Link** linkup, Link** linkdown){
144 s_sg_platf_link_cbarg_t linkTemplate;
145 memset(&linkTemplate, 0, sizeof(linkTemplate));
146 linkTemplate.bandwidth = this->cluster_->bw * numlinks;
147 linkTemplate.latency = this->cluster_->lat;
148 linkTemplate.policy = this->cluster_->sharing_policy; // sthg to do with that ?
149 linkTemplate.id = id;
150 sg_platf_new_link(&linkTemplate);
151 XBT_DEBUG("Generating link %s", id);
154 if (this->cluster_->sharing_policy == SURF_LINK_FULLDUPLEX) {
155 tmpID = std::string(linkTemplate.id) + "_UP";
156 link = Link::byName(tmpID.c_str());
157 *linkup = link; // check link?
158 tmpID = std::string(linkTemplate.id) + "_DOWN";
159 link = Link::byName(tmpID.c_str());
160 *linkdown = link; // check link ?
163 link = Link::byName(linkTemplate.id);
168 free((void*)linkTemplate.id);
172 void AsClusterDragonfly::generateLinks() {
174 unsigned int i, j, k, l;
175 static int uniqueId = 0;
177 Link* linkup, *linkdown;
179 unsigned int numRouters = this->numGroups_*this->numChassisPerGroup_*this->numBladesPerChassis_;
181 if (this->cluster_->sharing_policy == SURF_LINK_FULLDUPLEX)
185 //Links from routers to their local nodes.
186 for(i=0; i<numRouters;i++){
187 //allocate structures
188 this->routers_[i]->myNodes_=(Link**)xbt_malloc0(numLinksperLink_*this->numNodesPerBlade_*sizeof(Link*));
189 this->routers_[i]->greenLinks_=(Link**)xbt_malloc0(this->numBladesPerChassis_*sizeof(Link*));
190 this->routers_[i]->blackLinks_=(Link**)xbt_malloc0(this->numChassisPerGroup_*sizeof(Link*));
192 for(j=0; j< numLinksperLink_*this->numNodesPerBlade_; j+=numLinksperLink_){
193 id = bprintf("local_link_from_router_%d_to_node_%d_%d", i, j/numLinksperLink_, uniqueId);
194 this->createLink(id, 1, &linkup, &linkdown);
195 if (this->cluster_->sharing_policy == SURF_LINK_FULLDUPLEX) {
196 this->routers_[i]->myNodes_[j] = linkup;
197 this->routers_[i]->myNodes_[j+1] = linkdown;
200 this->routers_[i]->myNodes_[j] = linkup;
206 //Green links from routers to same chassis routers - alltoall
207 for(i=0; i<this->numGroups_*this->numChassisPerGroup_;i++){
208 for(j=0; j<this->numBladesPerChassis_;j++){
209 for(k=j+1;k<this->numBladesPerChassis_;k++){
210 id = bprintf("green_link_in_chassis_%d_between_routers_%d_and_%d_%d", i%numChassisPerGroup_, j, k, uniqueId);
211 this->createLink(id, this->numLinksGreen_, &linkup, &linkdown);
212 this->routers_[i*numBladesPerChassis_+j]->greenLinks_[k] = linkup;
213 this->routers_[i*numBladesPerChassis_+k]->greenLinks_[j] = linkdown;
219 //Black links from routers to same group routers - alltoall
220 for(i=0; i<this->numGroups_;i++){
221 for(j=0; j<this->numChassisPerGroup_;j++){
222 for(k=j+1;k<this->numChassisPerGroup_;k++){
223 for(l=0;l<this->numBladesPerChassis_;l++){
224 id = bprintf("black_link_in_group_%d_between_chassis_%d_and_%d_blade_%d_%d", i, j, k,l, uniqueId);
225 this->createLink(id, this->numLinksBlack_,&linkup, &linkdown);
226 this->routers_[i*numBladesPerChassis_*numChassisPerGroup_+j*numBladesPerChassis_+l]->blackLinks_[k] = linkup;
227 this->routers_[i*numBladesPerChassis_*numChassisPerGroup_+k*numBladesPerChassis_+l]->blackLinks_[j] = linkdown;
235 //Blue links betweeen 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.
236 //FIXME: in reality blue links may be attached to several different routers
237 for(i=0; i<this->numGroups_;i++){
238 for(j=i+1; j<this->numGroups_;j++){
239 unsigned int routernumi=i*numBladesPerChassis_*numChassisPerGroup_+j;
240 unsigned int routernumj=j*numBladesPerChassis_*numChassisPerGroup_+i;
241 this->routers_[routernumi]->blueLinks_=(Link**)xbt_malloc0(sizeof(Link*));
242 this->routers_[routernumj]->blueLinks_=(Link**)xbt_malloc0(sizeof(Link*));
243 id = bprintf("blue_link_between_group_%d_and_%d_routers_%d_and_%d_%d", i, j, routernumi,routernumj, uniqueId);
244 this->createLink(id, this->numLinksBlue_, &linkup, &linkdown);
245 this->routers_[routernumi]->blueLinks_[0] = linkup;
246 this->routers_[routernumj]->blueLinks_[0] = linkdown;
253 void AsClusterDragonfly::getRouteAndLatency(NetCard * src, NetCard * dst, sg_platf_route_cbarg_t route, double *latency) {
255 //Minimal routing version.
256 // TODO : non-minimal random one, and adaptive ?
258 if (dst->isRouter() || src->isRouter())
261 XBT_VERB("dragonfly_get_route_and_latency from '%s'[%d] to '%s'[%d]",
262 src->name(), src->id(), dst->name(), dst->id());
264 if ((src->id() == dst->id()) && hasLoopback_) {
265 s_surf_parsing_link_up_down_t info = xbt_dynar_get_as(privateLinks_, src->id() * linkCountPerNode_, s_surf_parsing_link_up_down_t);
267 route->link_list->push_back(info.linkUp);
269 *latency += info.linkUp->getLatency();
273 unsigned int *myCoords, *targetCoords;
274 myCoords = rankId_to_coords(src->id());
275 targetCoords = rankId_to_coords(dst->id());
276 XBT_DEBUG("src : %u group, %u chassis, %u blade, %u node", myCoords[0], myCoords[1], myCoords[2], myCoords[3]);
277 XBT_DEBUG("dst : %u group, %u chassis, %u blade, %u node", targetCoords[0], targetCoords[1], targetCoords[2], targetCoords[3]);
279 DragonflyRouter* myRouter = routers_[myCoords[0]*(numChassisPerGroup_*numBladesPerChassis_)+myCoords[1] * numBladesPerChassis_+myCoords[2]];
280 DragonflyRouter* targetRouter = routers_[targetCoords[0]*(numChassisPerGroup_*numBladesPerChassis_)+targetCoords[1] *numBladesPerChassis_ +targetCoords[2]];
281 DragonflyRouter* currentRouter=myRouter;
283 //node->router local link
284 route->link_list->push_back(myRouter->myNodes_[myCoords[3]*numLinksperLink_]);
286 *latency += myRouter->myNodes_[myCoords[3]*numLinksperLink_]->getLatency();
289 if (hasLimiter_) { // limiter for sender
290 s_surf_parsing_link_up_down_t info;
291 info = xbt_dynar_get_as(privateLinks_, src->id() * linkCountPerNode_ + hasLoopback_, s_surf_parsing_link_up_down_t);
292 route->link_list->push_back(info.linkUp);
295 if(targetRouter!=myRouter){
297 //are we on a different group ?
298 if(targetRouter->group_ != currentRouter->group_){
299 //go to the router of our group connected to this one.
300 if(currentRouter->blade_!=targetCoords[0]){
301 //go to the nth router in our chassis
302 route->link_list->push_back(currentRouter->greenLinks_[targetCoords[0]]);
304 *latency += currentRouter->greenLinks_[targetCoords[0]]->getLatency();
306 currentRouter=routers_[myCoords[0]*(numChassisPerGroup_*numBladesPerChassis_)+myCoords[1] * numBladesPerChassis_+targetCoords[0]];
309 if(currentRouter->chassis_!=0){
310 //go to the first chassis of our group
311 route->link_list->push_back(currentRouter->blackLinks_[0]);
313 *latency += currentRouter->blackLinks_[0]->getLatency();
315 currentRouter=routers_[myCoords[0]*(numChassisPerGroup_*numBladesPerChassis_)+targetCoords[0]];
318 //go to destination group - the only optical hop
319 route->link_list->push_back(currentRouter->blueLinks_[0]);
321 *latency += currentRouter->blueLinks_[0]->getLatency();
323 currentRouter=routers_[targetCoords[0]*(numChassisPerGroup_*numBladesPerChassis_)+myCoords[0]];
327 //same group, but same blade ?
328 if(targetRouter->blade_ != currentRouter->blade_){
329 route->link_list->push_back(currentRouter->greenLinks_[targetCoords[2]]);
331 *latency += currentRouter->greenLinks_[targetCoords[2]]->getLatency();
333 currentRouter=routers_[targetCoords[0]*(numChassisPerGroup_*numBladesPerChassis_)+targetCoords[2]];
336 //same blade, but same chassis ?
337 if(targetRouter->chassis_ != currentRouter->chassis_){
338 route->link_list->push_back(currentRouter->blackLinks_[targetCoords[1]]);
340 *latency += currentRouter->blackLinks_[targetCoords[1]]->getLatency();
342 currentRouter=routers_[targetCoords[0]*(numChassisPerGroup_*numBladesPerChassis_)+targetCoords[1]*numBladesPerChassis_+targetCoords[2]];
346 if (hasLimiter_) { // limiter for receiver
347 s_surf_parsing_link_up_down_t info;
348 info = xbt_dynar_get_as(privateLinks_, dst->id() * linkCountPerNode_ + hasLoopback_, s_surf_parsing_link_up_down_t);
349 route->link_list->push_back(info.linkUp);
352 //router->node local link
353 route->link_list->push_back(targetRouter->myNodes_[targetCoords[3]*numLinksperLink_+numLinksperLink_-1]);
355 *latency += targetRouter->myNodes_[targetCoords[3]*numLinksperLink_+numLinksperLink_-1]->getLatency();
359 xbt_free(targetCoords);