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/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");
19 AsClusterDragonfly::AsClusterDragonfly(const char*name)
23 AsClusterDragonfly::~AsClusterDragonfly() {
24 if(this->routers_ != nullptr){
25 for (unsigned int i=0; i<this->numGroups_*this->numChassisPerGroup_*this->numBladesPerChassis_;i++)
31 unsigned int *AsClusterDragonfly::rankId_to_coords(int rankId)
33 //coords : group, chassis, blade, node
34 unsigned int *coords = (unsigned int *) malloc(4 * sizeof(unsigned int));
35 coords[0] = rankId/ (numChassisPerGroup_*numBladesPerChassis_*numNodesPerBlade_);
36 rankId=rankId%(numChassisPerGroup_*numBladesPerChassis_*numNodesPerBlade_);
37 coords[1] = rankId/ (numBladesPerChassis_*numNodesPerBlade_);
38 rankId=rankId%(numBladesPerChassis_*numNodesPerBlade_);
39 coords[2] = rankId/ numNodesPerBlade_;
40 coords[3]=rankId%numNodesPerBlade_;
45 void AsClusterDragonfly::parse_specific_arguments(sg_platf_cluster_cbarg_t cluster) {
46 std::vector<std::string> parameters;
47 std::vector<std::string> tmp;
48 boost::split(parameters, cluster->topo_parameters, boost::is_any_of(";"));
50 // TODO : we have to check for zeros and negative numbers, or it might crash
51 if (parameters.size() != 4){
52 surf_parse_error("Dragonfly are defined by the number of groups, chassiss per groups, blades per chassis, nodes per blade");
55 // Blue network : number of groups, number of links between each group
56 boost::split(tmp, parameters[0], boost::is_any_of(","));
58 surf_parse_error("Dragonfly topologies are defined by 3 levels with 2 elements each, and one with one element");
61 this->numGroups_=xbt_str_parse_int(tmp[0].c_str(), "Invalid number of groups: %s");
62 this->numLinksBlue_=xbt_str_parse_int(tmp[1].c_str(), "Invalid number of links for the blue level: %s");
64 // Black network : number of chassiss/group, number of links between each router on the black network
65 boost::split(tmp, parameters[1], boost::is_any_of(","));
67 surf_parse_error("Dragonfly topologies are defined by 3 levels with 2 elements each, and one with one element");
70 this->numChassisPerGroup_=xbt_str_parse_int(tmp[0].c_str(), "Invalid number of groups: %s");
71 this->numLinksBlack_=xbt_str_parse_int(tmp[1].c_str(), "Invalid number of links for the black level: %s");
74 // Green network : number of blades/chassis, number of links between each router on the green network
75 boost::split(tmp, parameters[2], boost::is_any_of(","));
77 surf_parse_error("Dragonfly topologies are defined by 3 levels with 2 elements each, and one with one element");
80 this->numBladesPerChassis_=xbt_str_parse_int(tmp[0].c_str(), "Invalid number of groups: %s");
81 this->numLinksGreen_=xbt_str_parse_int(tmp[1].c_str(), "Invalid number of links for the green level: %s");
84 // The last part of topo_parameters should be the number of nodes per blade
85 this->numNodesPerBlade_ = xbt_str_parse_int(parameters[3].c_str(), "Last parameter is not the amount of nodes per blade: %s");
86 this->cluster_ = cluster;
90 * Generate the cluster once every node is created
92 void AsClusterDragonfly::seal(){
93 if(this->numNodesPerBlade_ == 0) {
97 this->generateRouters();
98 this->generateLinks();
101 DragonflyRouter::DragonflyRouter(int group, int chassis, int blade):group_(group),chassis_(chassis),blade_(blade){ }
103 DragonflyRouter::~DragonflyRouter(){
104 if(this->myNodes_!=nullptr)
106 if(this->greenLinks_!=nullptr)
107 xbt_free(greenLinks_);
108 if(this->blackLinks_!=nullptr)
109 xbt_free(blackLinks_);
110 if(this->blueLinks_!=nullptr)
111 xbt_free(blueLinks_);
115 void AsClusterDragonfly::generateRouters() {
116 this->routers_=static_cast<DragonflyRouter**>(xbt_malloc0(this->numGroups_*this->numChassisPerGroup_*this->numBladesPerChassis_*sizeof(DragonflyRouter*)));
118 for(unsigned int i=0;i<this->numGroups_;i++){
119 for(unsigned int j=0;j<this->numChassisPerGroup_;j++){
120 for(unsigned int k=0;k<this->numBladesPerChassis_;k++){
121 DragonflyRouter* router = new DragonflyRouter(i,j,k);
122 this->routers_[i*this->numChassisPerGroup_*this->numBladesPerChassis_+j*this->numBladesPerChassis_+k]=router;
128 void AsClusterDragonfly::createLink(char* id, int numlinks, Link** linkup, Link** linkdown){
131 s_sg_platf_link_cbarg_t linkTemplate;
132 memset(&linkTemplate, 0, sizeof(linkTemplate));
133 linkTemplate.bandwidth = this->cluster_->bw * numlinks;
134 linkTemplate.latency = this->cluster_->lat;
135 linkTemplate.policy = this->cluster_->sharing_policy; // sthg to do with that ?
136 linkTemplate.id = id;
137 sg_platf_new_link(&linkTemplate);
138 XBT_DEBUG("Generating link %s", id);
141 if (this->cluster_->sharing_policy == SURF_LINK_FULLDUPLEX) {
142 tmpID = std::string(linkTemplate.id) + "_UP";
143 link = Link::byName(tmpID.c_str());
144 *linkup = link; // check link?
145 tmpID = std::string(linkTemplate.id) + "_DOWN";
146 link = Link::byName(tmpID.c_str());
147 *linkdown = link; // check link ?
150 link = Link::byName(linkTemplate.id);
155 free((void*)linkTemplate.id);
159 void AsClusterDragonfly::generateLinks() {
161 static int uniqueId = 0;
166 unsigned int numRouters = this->numGroups_*this->numChassisPerGroup_*this->numBladesPerChassis_;
168 if (this->cluster_->sharing_policy == SURF_LINK_FULLDUPLEX)
171 //Links from routers to their local nodes.
172 for(unsigned int i=0; i<numRouters;i++){
173 //allocate structures
174 this->routers_[i]->myNodes_=static_cast<Link**>(xbt_malloc0(numLinksperLink_*this->numNodesPerBlade_*sizeof(Link*)));
175 this->routers_[i]->greenLinks_=static_cast<Link**>(xbt_malloc0(this->numBladesPerChassis_*sizeof(Link*)));
176 this->routers_[i]->blackLinks_=static_cast<Link**>(xbt_malloc0(this->numChassisPerGroup_*sizeof(Link*)));
178 for(unsigned int j=0; j< numLinksperLink_*this->numNodesPerBlade_; j+=numLinksperLink_){
179 id = bprintf("local_link_from_router_%d_to_node_%d_%d", i, j/numLinksperLink_, uniqueId);
180 this->createLink(id, 1, &linkup, &linkdown);
181 if (this->cluster_->sharing_policy == SURF_LINK_FULLDUPLEX) {
182 this->routers_[i]->myNodes_[j] = linkup;
183 this->routers_[i]->myNodes_[j+1] = linkdown;
186 this->routers_[i]->myNodes_[j] = linkup;
192 //Green links from routers to same chassis routers - alltoall
193 for(unsigned int i=0; i<this->numGroups_*this->numChassisPerGroup_;i++){
194 for(unsigned int j=0; j<this->numBladesPerChassis_;j++){
195 for(unsigned int k=j+1;k<this->numBladesPerChassis_;k++){
196 id = bprintf("green_link_in_chassis_%d_between_routers_%d_and_%d_%d", i%numChassisPerGroup_, j, k, uniqueId);
197 this->createLink(id, this->numLinksGreen_, &linkup, &linkdown);
198 this->routers_[i*numBladesPerChassis_+j]->greenLinks_[k] = linkup;
199 this->routers_[i*numBladesPerChassis_+k]->greenLinks_[j] = linkdown;
205 //Black links from routers to same group routers - alltoall
206 for(unsigned int i=0; i<this->numGroups_;i++){
207 for(unsigned int j=0; j<this->numChassisPerGroup_;j++){
208 for(unsigned int k=j+1;k<this->numChassisPerGroup_;k++){
209 for(unsigned int l=0;l<this->numBladesPerChassis_;l++){
210 id = bprintf("black_link_in_group_%d_between_chassis_%d_and_%d_blade_%d_%d", i, j, k,l, uniqueId);
211 this->createLink(id, this->numLinksBlack_,&linkup, &linkdown);
212 this->routers_[i*numBladesPerChassis_*numChassisPerGroup_+j*numBladesPerChassis_+l]->blackLinks_[k] = linkup;
213 this->routers_[i*numBladesPerChassis_*numChassisPerGroup_+k*numBladesPerChassis_+l]->blackLinks_[j] = linkdown;
221 //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.
222 //FIXME: in reality blue links may be attached to several different routers
223 for(unsigned int i=0; i<this->numGroups_;i++){
224 for(unsigned int j=i+1; j<this->numGroups_;j++){
225 unsigned int routernumi=i*numBladesPerChassis_*numChassisPerGroup_+j;
226 unsigned int routernumj=j*numBladesPerChassis_*numChassisPerGroup_+i;
227 this->routers_[routernumi]->blueLinks_=static_cast<Link**>(xbt_malloc0(sizeof(Link*)));
228 this->routers_[routernumj]->blueLinks_=static_cast<Link**>(xbt_malloc0(sizeof(Link*)));
229 id = bprintf("blue_link_between_group_%d_and_%d_routers_%d_and_%d_%d", i, j, routernumi,routernumj, uniqueId);
230 this->createLink(id, this->numLinksBlue_, &linkup, &linkdown);
231 this->routers_[routernumi]->blueLinks_[0] = linkup;
232 this->routers_[routernumj]->blueLinks_[0] = linkdown;
238 void AsClusterDragonfly::getRouteAndLatency(NetCard * src, NetCard * dst, sg_platf_route_cbarg_t route, double *latency) {
239 //Minimal routing version.
240 // TODO : non-minimal random one, and adaptive ?
242 if (dst->isRouter() || src->isRouter())
245 XBT_VERB("dragonfly_get_route_and_latency from '%s'[%d] to '%s'[%d]", src->name(), src->id(), dst->name(), dst->id());
247 if ((src->id() == dst->id()) && hasLoopback_) {
248 s_surf_parsing_link_up_down_t info = privateLinks_.at(src->id() * linkCountPerNode_);
250 route->link_list->push_back(info.linkUp);
252 *latency += info.linkUp->getLatency();
256 unsigned int *myCoords = rankId_to_coords(src->id());
257 unsigned int *targetCoords = rankId_to_coords(dst->id());
258 XBT_DEBUG("src : %u group, %u chassis, %u blade, %u node", myCoords[0], myCoords[1], myCoords[2], myCoords[3]);
259 XBT_DEBUG("dst : %u group, %u chassis, %u blade, %u node", targetCoords[0], targetCoords[1], targetCoords[2], targetCoords[3]);
261 DragonflyRouter* myRouter = routers_[myCoords[0]*(numChassisPerGroup_*numBladesPerChassis_)+myCoords[1] * numBladesPerChassis_+myCoords[2]];
262 DragonflyRouter* targetRouter = routers_[targetCoords[0]*(numChassisPerGroup_*numBladesPerChassis_)+targetCoords[1] *numBladesPerChassis_ +targetCoords[2]];
263 DragonflyRouter* currentRouter=myRouter;
265 //node->router local link
266 route->link_list->push_back(myRouter->myNodes_[myCoords[3]*numLinksperLink_]);
268 *latency += myRouter->myNodes_[myCoords[3]*numLinksperLink_]->getLatency();
271 if (hasLimiter_) { // limiter for sender
272 s_surf_parsing_link_up_down_t info;
273 info = privateLinks_.at(src->id() * linkCountPerNode_ + hasLoopback_);
274 route->link_list->push_back(info.linkUp);
277 if(targetRouter!=myRouter){
279 //are we on a different group ?
280 if(targetRouter->group_ != currentRouter->group_){
281 //go to the router of our group connected to this one.
282 if(currentRouter->blade_!=targetCoords[0]){
283 //go to the nth router in our chassis
284 route->link_list->push_back(currentRouter->greenLinks_[targetCoords[0]]);
286 *latency += currentRouter->greenLinks_[targetCoords[0]]->getLatency();
288 currentRouter=routers_[myCoords[0]*(numChassisPerGroup_*numBladesPerChassis_)+myCoords[1] * numBladesPerChassis_+targetCoords[0]];
291 if(currentRouter->chassis_!=0){
292 //go to the first chassis of our group
293 route->link_list->push_back(currentRouter->blackLinks_[0]);
295 *latency += currentRouter->blackLinks_[0]->getLatency();
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]->getLatency();
305 currentRouter=routers_[targetCoords[0]*(numChassisPerGroup_*numBladesPerChassis_)+myCoords[0]];
309 //same group, but same blade ?
310 if(targetRouter->blade_ != currentRouter->blade_){
311 route->link_list->push_back(currentRouter->greenLinks_[targetCoords[2]]);
313 *latency += currentRouter->greenLinks_[targetCoords[2]]->getLatency();
315 currentRouter=routers_[targetCoords[0]*(numChassisPerGroup_*numBladesPerChassis_)+targetCoords[2]];
318 //same blade, but same chassis ?
319 if(targetRouter->chassis_ != currentRouter->chassis_){
320 route->link_list->push_back(currentRouter->blackLinks_[targetCoords[1]]);
322 *latency += currentRouter->blackLinks_[targetCoords[1]]->getLatency();
324 currentRouter=routers_[targetCoords[0]*(numChassisPerGroup_*numBladesPerChassis_)+targetCoords[1]*numBladesPerChassis_+targetCoords[2]];
328 if (hasLimiter_) { // limiter for receiver
329 s_surf_parsing_link_up_down_t info;
330 info = privateLinks_.at(dst->id() * linkCountPerNode_ + hasLoopback_);
331 route->link_list->push_back(info.linkUp);
334 //router->node local link
335 route->link_list->push_back(targetRouter->myNodes_[targetCoords[3]*numLinksperLink_+numLinksperLink_-1]);
337 *latency += targetRouter->myNodes_[targetCoords[3]*numLinksperLink_+numLinksperLink_-1]->getLatency();
341 xbt_free(targetCoords);