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");
24 AsClusterDragonfly::AsClusterDragonfly(const char*name)
28 AsClusterDragonfly::~AsClusterDragonfly() {
30 if(this->routers_!=NULL){
32 for (i=0; i<this->numGroups_*this->numChassisPerGroup_*this->numBladesPerChassis_;i++)
38 unsigned int *AsClusterDragonfly::rankId_to_coords(int rankId)
41 //coords : group, chassis, blade, node
42 unsigned int *coords = (unsigned int *) malloc(4 * sizeof(unsigned int));
43 coords[0] = rankId/ (numChassisPerGroup_*numBladesPerChassis_*numNodesPerBlade_);
44 rankId=rankId%(numChassisPerGroup_*numBladesPerChassis_*numNodesPerBlade_);
45 coords[1] = rankId/ (numBladesPerChassis_*numNodesPerBlade_);
46 rankId=rankId%(numBladesPerChassis_*numNodesPerBlade_);
47 coords[2] = rankId/ numNodesPerBlade_;
48 coords[3]=rankId%numNodesPerBlade_;
53 void AsClusterDragonfly::parse_specific_arguments(sg_platf_cluster_cbarg_t cluster) {
54 std::vector<std::string> parameters;
55 std::vector<std::string> tmp;
56 boost::split(parameters, cluster->topo_parameters, boost::is_any_of(";"));
58 // TODO : we have to check for zeros and negative numbers, or it might crash
59 if (parameters.size() != 4){
60 surf_parse_error("Dragonfly are defined by the number of groups, chassiss per groups, blades per chassis, nodes per blade");
63 // Blue network : number of groups, number of links between each group
64 boost::split(tmp, parameters[0], boost::is_any_of(","));
66 surf_parse_error("Dragonfly topologies are defined by 3 levels with 2 elements each, and one with one element");
69 this->numGroups_=xbt_str_parse_int(tmp[0].c_str(), "Invalid number of groups: %s");
70 this->numLinksBlue_=xbt_str_parse_int(tmp[1].c_str(), "Invalid number of links for the blue level: %s");
72 // Black network : number of chassiss/group, number of links between each router on the black network
73 boost::split(tmp, parameters[1], boost::is_any_of(","));
75 surf_parse_error("Dragonfly topologies are defined by 3 levels with 2 elements each, and one with one element");
78 this->numChassisPerGroup_=xbt_str_parse_int(tmp[0].c_str(), "Invalid number of groups: %s");
79 this->numLinksBlack_=xbt_str_parse_int(tmp[1].c_str(), "Invalid number of links for the black level: %s");
82 // Green network : number of blades/chassis, number of links between each router on the green network
83 boost::split(tmp, parameters[2], boost::is_any_of(","));
85 surf_parse_error("Dragonfly topologies are defined by 3 levels with 2 elements each, and one with one element");
88 this->numBladesPerChassis_=xbt_str_parse_int(tmp[0].c_str(), "Invalid number of groups: %s");
89 this->numLinksGreen_=xbt_str_parse_int(tmp[1].c_str(), "Invalid number of links for the green level: %s");
92 // The last part of topo_parameters should be the number of nodes per blade
93 this->numNodesPerBlade_ = xbt_str_parse_int(parameters[3].c_str(), "Last parameter is not the amount of nodes per blade: %s");
94 this->cluster_ = cluster;
98 * Generate the cluster once every node is created
100 void AsClusterDragonfly::seal(){
101 if(this->numNodesPerBlade_ == 0) {
105 this->generateRouters();
106 this->generateLinks();
109 DragonflyRouter::DragonflyRouter(int group, int chassis, int blade){
111 this->chassis_=chassis;
115 DragonflyRouter::~DragonflyRouter(){
116 if(this->myNodes_!=NULL)
118 if(this->greenLinks_!=NULL)
119 xbt_free(greenLinks_);
120 if(this->blackLinks_!=NULL)
121 xbt_free(blackLinks_);
122 if(this->blueLinks_!=NULL)
123 xbt_free(blueLinks_);
127 void AsClusterDragonfly::generateRouters() {
129 unsigned int i, j, k;
131 this->routers_=(DragonflyRouter**)xbt_malloc0(this->numGroups_*this->numChassisPerGroup_*this->numBladesPerChassis_*sizeof(DragonflyRouter*));
133 for(i=0;i<this->numGroups_;i++){
134 for(j=0;j<this->numChassisPerGroup_;j++){
135 for(k=0;k<this->numBladesPerChassis_;k++){
136 DragonflyRouter* router = new DragonflyRouter(i,j,k);
137 this->routers_[i*this->numChassisPerGroup_*this->numBladesPerChassis_+j*this->numBladesPerChassis_+k]=router;
145 void AsClusterDragonfly::createLink(char* id, int numlinks, Link** linkup, Link** linkdown){
148 s_sg_platf_link_cbarg_t linkTemplate;
149 memset(&linkTemplate, 0, sizeof(linkTemplate));
150 linkTemplate.bandwidth = this->cluster_->bw * numlinks;
151 linkTemplate.latency = this->cluster_->lat;
152 linkTemplate.policy = this->cluster_->sharing_policy; // sthg to do with that ?
153 linkTemplate.id = id;
154 sg_platf_new_link(&linkTemplate);
155 XBT_DEBUG("Generating link %s", id);
158 if (this->cluster_->sharing_policy == SURF_LINK_FULLDUPLEX) {
159 tmpID = std::string(linkTemplate.id) + "_UP";
160 link = Link::byName(tmpID.c_str());
161 *linkup = link; // check link?
162 tmpID = std::string(linkTemplate.id) + "_DOWN";
163 link = Link::byName(tmpID.c_str());
164 *linkdown = link; // check link ?
167 link = Link::byName(linkTemplate.id);
172 free((void*)linkTemplate.id);
176 void AsClusterDragonfly::generateLinks() {
178 unsigned int i, j, k, l,m;
179 static int uniqueId = 0;
181 Link* linkup, *linkdown;
183 int numRouters = this->numGroups_*this->numChassisPerGroup_*this->numBladesPerChassis_;
185 if (this->cluster_->sharing_policy == SURF_LINK_FULLDUPLEX)
189 //Links from routers to their local nodes.
190 for(i=0; i<numRouters;i++){
191 //allocate structures
192 this->routers_[i]->myNodes_=(Link**)xbt_malloc0(numLinksperLink_*this->numNodesPerBlade_*sizeof(Link*));
193 this->routers_[i]->greenLinks_=(Link**)xbt_malloc0(this->numBladesPerChassis_*sizeof(Link*));
194 this->routers_[i]->blackLinks_=(Link**)xbt_malloc0(this->numChassisPerGroup_*sizeof(Link*));
196 for(j=0; j< numLinksperLink_*this->numNodesPerBlade_; j+=numLinksperLink_){
197 id = bprintf("local_link_from_router_%d_to_node_%d_%d", i, j/numLinksperLink_, uniqueId);
198 this->createLink(id, 1, &linkup, &linkdown);
199 if (this->cluster_->sharing_policy == SURF_LINK_FULLDUPLEX) {
200 this->routers_[i]->myNodes_[j] = linkup;
201 this->routers_[i]->myNodes_[j+1] = linkdown;
204 this->routers_[i]->myNodes_[j] = linkup;
210 //Green links from routers to same chassis routers - alltoall
211 for(i=0; i<this->numGroups_*this->numChassisPerGroup_;i++){
212 for(j=0; j<this->numBladesPerChassis_;j++){
213 for(k=j+1;k<this->numBladesPerChassis_;k++){
214 id = bprintf("green_link_in_chassis_%d_between_routers_%d_and_%d_%d", i%numChassisPerGroup_, j, k, uniqueId);
215 this->createLink(id, this->numLinksGreen_, &linkup, &linkdown);
216 this->routers_[i*numBladesPerChassis_+j]->greenLinks_[k] = linkup;
217 this->routers_[i*numBladesPerChassis_+k]->greenLinks_[j] = linkdown;
223 //Black links from routers to same group routers - alltoall
224 for(i=0; i<this->numGroups_;i++){
225 for(j=0; j<this->numChassisPerGroup_;j++){
226 for(k=j+1;k<this->numChassisPerGroup_;k++){
227 for(l=0;l<this->numBladesPerChassis_;l++){
228 id = bprintf("black_link_in_group_%d_between_chassis_%d_and_%d_blade_%d_%d", i, j, k,l, uniqueId);
229 this->createLink(id, this->numLinksBlack_,&linkup, &linkdown);
230 this->routers_[i*numBladesPerChassis_*numChassisPerGroup_+j*numBladesPerChassis_+l]->blackLinks_[k] = linkup;
231 this->routers_[i*numBladesPerChassis_*numChassisPerGroup_+k*numBladesPerChassis_+l]->blackLinks_[j] = linkdown;
239 //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.
240 //FIXME: in reality blue links may be attached to several different routers
241 for(i=0; i<this->numGroups_;i++){
242 for(j=i+1; j<this->numGroups_;j++){
243 unsigned int routernumi=i*numBladesPerChassis_*numChassisPerGroup_+j;
244 unsigned int routernumj=j*numBladesPerChassis_*numChassisPerGroup_+i;
245 this->routers_[routernumi]->blueLinks_=(Link**)xbt_malloc0(sizeof(Link*));
246 this->routers_[routernumj]->blueLinks_=(Link**)xbt_malloc0(sizeof(Link*));
247 id = bprintf("blue_link_between_group_%d_and_%d_routers_%d_and_%d_%d", i, j, routernumi,routernumj, uniqueId);
248 this->createLink(id, this->numLinksBlue_, &linkup, &linkdown);
249 this->routers_[routernumi]->blueLinks_[0] = linkup;
250 this->routers_[routernumj]->blueLinks_[0] = linkdown;
257 void AsClusterDragonfly::getRouteAndLatency(NetCard * src, NetCard * dst, sg_platf_route_cbarg_t route, double *latency) {
259 //Minimal routing version.
260 // TODO : non-minimal random one, and adaptive ?
262 if (dst->isRouter() || src->isRouter())
265 XBT_VERB("dragonfly_get_route_and_latency from '%s'[%d] to '%s'[%d]",
266 src->name(), src->id(), dst->name(), dst->id());
268 if ((src->id() == dst->id()) && hasLoopback_) {
269 s_surf_parsing_link_up_down_t info = xbt_dynar_get_as(privateLinks_, src->id() * linkCountPerNode_, s_surf_parsing_link_up_down_t);
271 route->link_list->push_back(info.linkUp);
273 *latency += info.linkUp->getLatency();
277 unsigned int *myCoords, *targetCoords;
278 myCoords = rankId_to_coords(src->id());
279 targetCoords = rankId_to_coords(dst->id());
280 XBT_DEBUG("src : %u group, %u chassis, %u blade, %u node", myCoords[0], myCoords[1], myCoords[2], myCoords[3]);
281 XBT_DEBUG("dst : %u group, %u chassis, %u blade, %u node", targetCoords[0], targetCoords[1], targetCoords[2], targetCoords[3]);
283 DragonflyRouter* myRouter = routers_[myCoords[0]*(numChassisPerGroup_*numBladesPerChassis_)+myCoords[1] * numBladesPerChassis_+myCoords[2]];
284 DragonflyRouter* targetRouter = routers_[targetCoords[0]*(numChassisPerGroup_*numBladesPerChassis_)+targetCoords[1] *numBladesPerChassis_ +targetCoords[2]];
285 DragonflyRouter* currentRouter=myRouter;
287 //node->router local link
288 route->link_list->push_back(myRouter->myNodes_[myCoords[3]*numLinksperLink_]);
290 *latency += myRouter->myNodes_[myCoords[3]*numLinksperLink_]->getLatency();
293 if (hasLimiter_) { // limiter for sender
294 s_surf_parsing_link_up_down_t info;
295 info = xbt_dynar_get_as(privateLinks_, src->id() * linkCountPerNode_ + hasLoopback_, s_surf_parsing_link_up_down_t);
296 route->link_list->push_back(info.linkUp);
299 if(targetRouter!=myRouter){
301 //are we on a different group ?
302 if(targetRouter->group_ != currentRouter->group_){
303 //go to the router of our group connected to this one.
304 if(currentRouter->blade_!=targetCoords[0]){
305 //go to the nth router in our chassis
306 route->link_list->push_back(currentRouter->greenLinks_[targetCoords[0]]);
308 *latency += currentRouter->greenLinks_[targetCoords[0]]->getLatency();
310 currentRouter=routers_[myCoords[0]*(numChassisPerGroup_*numBladesPerChassis_)+myCoords[1] * numBladesPerChassis_+targetCoords[0]];
313 if(currentRouter->chassis_!=0){
314 //go to the first chassis of our group
315 route->link_list->push_back(currentRouter->blackLinks_[0]);
317 *latency += currentRouter->blackLinks_[0]->getLatency();
319 currentRouter=routers_[myCoords[0]*(numChassisPerGroup_*numBladesPerChassis_)+targetCoords[0]];
322 //go to destination group - the only optical hop
323 route->link_list->push_back(currentRouter->blueLinks_[0]);
325 *latency += currentRouter->blueLinks_[0]->getLatency();
327 currentRouter=routers_[targetCoords[0]*(numChassisPerGroup_*numBladesPerChassis_)+myCoords[0]];
331 //same group, but same blade ?
332 if(targetRouter->blade_ != currentRouter->blade_){
333 route->link_list->push_back(currentRouter->greenLinks_[targetCoords[2]]);
335 *latency += currentRouter->greenLinks_[targetCoords[2]]->getLatency();
337 currentRouter=routers_[targetCoords[0]*(numChassisPerGroup_*numBladesPerChassis_)+targetCoords[2]];
340 //same blade, but same chassis ?
341 if(targetRouter->chassis_ != currentRouter->chassis_){
342 route->link_list->push_back(currentRouter->blackLinks_[targetCoords[1]]);
344 *latency += currentRouter->blackLinks_[targetCoords[1]]->getLatency();
346 currentRouter=routers_[targetCoords[0]*(numChassisPerGroup_*numBladesPerChassis_)+targetCoords[1]*numBladesPerChassis_+targetCoords[2]];
350 if (hasLimiter_) { // limiter for receiver
351 s_surf_parsing_link_up_down_t info;
352 info = xbt_dynar_get_as(privateLinks_, dst->id() * linkCountPerNode_ + hasLoopback_, s_surf_parsing_link_up_down_t);
353 route->link_list->push_back(info.linkUp);
356 //router->node local link
357 route->link_list->push_back(targetRouter->myNodes_[targetCoords[3]*numLinksperLink_+numLinksperLink_-1]);
359 *latency += targetRouter->myNodes_[targetCoords[3]*numLinksperLink_+numLinksperLink_-1]->getLatency();
363 xbt_free(targetCoords);