-/* Copyright (c) 2014-2020. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2014-2021. 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 "simgrid/kernel/routing/DragonflyZone.hpp"
#include "simgrid/kernel/routing/NetPoint.hpp"
#include "src/surf/network_interface.hpp"
-#include "src/surf/xml/platf_private.hpp"
#include <boost/algorithm/string/classification.hpp>
#include <boost/algorithm/string/split.hpp>
+#include <numeric>
#include <string>
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route_cluster_dragonfly, surf_route_cluster, "Dragonfly Routing part of surf");
namespace kernel {
namespace routing {
-DragonflyZone::DragonflyZone(NetZoneImpl* father, const std::string& name, resource::NetworkModel* netmodel)
- : ClusterZone(father, name, netmodel)
-{
-}
+DragonflyZone::DragonflyZone(const std::string& name) : ClusterBase(name) {}
DragonflyZone::Coords DragonflyZone::rankId_to_coords(int rankId) const
{
coords[3] = s_coords.node;
}
-void DragonflyZone::parse_specific_arguments(ClusterCreationArgs* cluster)
+void DragonflyZone::set_link_characteristics(double bw, double lat, s4u::Link::SharingPolicy sharing_policy)
+{
+ ClusterBase::set_link_characteristics(bw, lat, sharing_policy);
+ if (sharing_policy == s4u::Link::SharingPolicy::SPLITDUPLEX)
+ num_links_per_link_ = 2;
+}
+
+void DragonflyZone::set_topology(unsigned int n_groups, unsigned int groups_links, unsigned int n_chassis,
+ unsigned int chassis_links, unsigned int n_routers, unsigned int routers_links,
+ unsigned int nodes)
+{
+ num_groups_ = n_groups;
+ num_links_blue_ = groups_links;
+
+ num_chassis_per_group_ = n_chassis;
+ num_links_black_ = chassis_links;
+
+ num_blades_per_chassis_ = n_routers;
+ num_links_green_ = routers_links;
+
+ num_nodes_per_blade_ = nodes;
+}
+
+s4u::DragonflyParams DragonflyZone::parse_topo_parameters(const std::string& topo_parameters)
{
std::vector<std::string> parameters;
std::vector<std::string> tmp;
- boost::split(parameters, cluster->topo_parameters, boost::is_any_of(";"));
+ boost::split(parameters, topo_parameters, boost::is_any_of(";"));
- if (parameters.size() != 4 || parameters.empty()) {
- surf_parse_error(
- "Dragonfly are defined by the number of groups, chassis per groups, blades per chassis, nodes per blade");
- }
+ if (parameters.size() != 4)
+ xbt_die("Dragonfly are defined by the number of groups, chassis 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");
- }
+ if (tmp.size() != 2)
+ xbt_die("Dragonfly topologies are defined by 3 levels with 2 elements each, and one with one element");
+ unsigned int n_groups;
try {
- this->num_groups_ = std::stoi(tmp[0]);
+ n_groups = std::stoi(tmp[0]);
} catch (const std::invalid_argument&) {
throw std::invalid_argument(std::string("Invalid number of groups:") + tmp[0]);
}
+ unsigned int n_blue;
try {
- this->num_links_blue_ = std::stoi(tmp[1]);
+ n_blue = std::stoi(tmp[1]);
} catch (const std::invalid_argument&) {
throw std::invalid_argument(std::string("Invalid number of links for the blue level:") + tmp[1]);
}
+
// Black network : number of chassis/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");
- }
+ if (tmp.size() != 2)
+ xbt_die("Dragonfly topologies are defined by 3 levels with 2 elements each, and one with one element");
+ unsigned int n_chassis;
try {
- this->num_chassis_per_group_ = std::stoi(tmp[0]);
+ n_chassis = std::stoi(tmp[0]);
} catch (const std::invalid_argument&) {
- throw std::invalid_argument(std::string("Invalid number of groups:") + tmp[0]);
+ throw std::invalid_argument(std::string("Invalid number of chassis:") + tmp[0]);
}
+ unsigned int n_black;
try {
- this->num_links_black_ = std::stoi(tmp[1]);
+ n_black = std::stoi(tmp[1]);
} catch (const std::invalid_argument&) {
throw std::invalid_argument(std::string("Invalid number of links for the black level:") + tmp[1]);
}
// 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");
- }
+ if (tmp.size() != 2)
+ xbt_die("Dragonfly topologies are defined by 3 levels with 2 elements each, and one with one element");
+ unsigned int n_routers;
try {
- this->num_blades_per_chassis_ = std::stoi(tmp[0]);
+ n_routers = std::stoi(tmp[0]);
} catch (const std::invalid_argument&) {
- throw std::invalid_argument(std::string("Invalid number of groups:") + tmp[0]);
+ throw std::invalid_argument(std::string("Invalid number of routers:") + tmp[0]);
}
+ unsigned int n_green;
try {
- this->num_links_green_ = std::stoi(tmp[1]);
+ n_green = std::stoi(tmp[1]);
} catch (const std::invalid_argument&) {
throw std::invalid_argument(std::string("Invalid number of links for the green level:") + tmp[1]);
}
// The last part of topo_parameters should be the number of nodes per blade
+ unsigned int n_nodes;
try {
- this->num_nodes_per_blade_ = std::stoi(parameters[3]);
+ n_nodes = std::stoi(parameters[3]);
} catch (const std::invalid_argument&) {
throw std::invalid_argument(std::string("Last parameter is not the amount of nodes per blade:") + parameters[3]);
}
-
- this->sharing_policy_ = cluster->sharing_policy;
- if (cluster->sharing_policy == s4u::Link::SharingPolicy::SPLITDUPLEX)
- this->num_links_per_link_ = 2;
- this->bw_ = cluster->bw;
- this->lat_ = cluster->lat;
+ return s4u::DragonflyParams({n_groups, n_blue}, {n_chassis, n_black}, {n_routers, n_green}, n_nodes);
}
/* Generate the cluster once every node is created */
-void DragonflyZone::seal()
+void DragonflyZone::build_upper_levels(const s4u::ClusterCallbacks& set_callbacks)
{
- if (this->num_nodes_per_blade_ == 0) {
- return;
- }
-
- this->generate_routers();
- this->generate_links();
+ generate_routers(set_callbacks);
+ generate_links();
}
-void DragonflyZone::generate_routers()
+void DragonflyZone::generate_routers(const s4u::ClusterCallbacks& set_callbacks)
{
- this->routers_.reserve(this->num_groups_ * this->num_chassis_per_group_ * this->num_blades_per_chassis_);
- for (unsigned int i = 0; i < this->num_groups_; i++)
- for (unsigned int j = 0; j < this->num_chassis_per_group_; j++)
- for (unsigned int k = 0; k < this->num_blades_per_chassis_; k++)
- this->routers_.emplace_back(i, j, k);
+ int id = 0;
+ /* get limiter for this router */
+ auto get_limiter = [this, &id, &set_callbacks](unsigned int i, unsigned int j,
+ unsigned int k) -> resource::LinkImpl* {
+ kernel::resource::LinkImpl* limiter = nullptr;
+ if (set_callbacks.limiter) {
+ id--;
+ const auto* s4u_link =
+ set_callbacks.limiter(get_iface(), {i, j, k, std::numeric_limits<unsigned int>::max()}, id);
+ if (s4u_link) {
+ limiter = s4u_link->get_impl();
+ }
+ }
+ return limiter;
+ };
+
+ routers_.reserve(static_cast<size_t>(num_groups_) * num_chassis_per_group_ * num_blades_per_chassis_);
+ for (unsigned int i = 0; i < num_groups_; i++) {
+ for (unsigned int j = 0; j < num_chassis_per_group_; j++) {
+ for (unsigned int k = 0; k < num_blades_per_chassis_; k++) {
+ routers_.emplace_back(i, j, k, get_limiter(i, j, k));
+ }
+ }
+ }
}
void DragonflyZone::generate_link(const std::string& id, int numlinks, resource::LinkImpl** linkup,
- resource::LinkImpl** linkdown) const
+ resource::LinkImpl** linkdown)
{
+ XBT_DEBUG("Generating link %s", id.c_str());
*linkup = nullptr;
*linkdown = nullptr;
- LinkCreationArgs linkTemplate;
- linkTemplate.bandwidths.push_back(this->bw_ * numlinks);
- linkTemplate.latency = this->lat_;
- linkTemplate.policy = this->sharing_policy_;
- linkTemplate.id = std::move(id);
- sg_platf_new_link(&linkTemplate);
- XBT_DEBUG("Generating link %s", linkTemplate.id.c_str());
- resource::LinkImpl* link;
- if (this->sharing_policy_ == s4u::Link::SharingPolicy::SPLITDUPLEX) {
- *linkup = s4u::Link::by_name(linkTemplate.id + "_UP")->get_impl(); // check link?
- *linkdown = s4u::Link::by_name(linkTemplate.id + "_DOWN")->get_impl(); // check link ?
+ if (get_link_sharing_policy() == s4u::Link::SharingPolicy::SPLITDUPLEX) {
+ *linkup =
+ create_link(id + "_UP", {get_link_bandwidth() * numlinks})->set_latency(get_link_latency())->seal()->get_impl();
+ *linkdown = create_link(id + "_DOWN", {get_link_bandwidth() * numlinks})
+ ->set_latency(get_link_latency())
+ ->seal()
+ ->get_impl();
} else {
- link = s4u::Link::by_name(linkTemplate.id)->get_impl();
- *linkup = link;
- *linkdown = link;
+ *linkup = create_link(id, {get_link_bandwidth() * numlinks})->set_latency(get_link_latency())->seal()->get_impl();
+ *linkdown = *linkup;
}
}
resource::LinkImpl* linkup;
resource::LinkImpl* linkdown;
- unsigned int numRouters = this->num_groups_ * this->num_chassis_per_group_ * this->num_blades_per_chassis_;
+ unsigned int numRouters = num_groups_ * num_chassis_per_group_ * num_blades_per_chassis_;
// Links from routers to their local nodes.
for (unsigned int i = 0; i < numRouters; i++) {
// allocate structures
- this->routers_[i].my_nodes_.resize(num_links_per_link_ * this->num_nodes_per_blade_);
- this->routers_[i].green_links_.resize(this->num_blades_per_chassis_);
- this->routers_[i].black_links_.resize(this->num_chassis_per_group_);
+ routers_[i].my_nodes_.resize(static_cast<size_t>(num_links_per_link_) * num_nodes_per_blade_);
+ routers_[i].green_links_.resize(num_blades_per_chassis_);
+ routers_[i].black_links_.resize(num_chassis_per_group_);
- for (unsigned int j = 0; j < num_links_per_link_ * this->num_nodes_per_blade_; j += num_links_per_link_) {
+ for (unsigned int j = 0; j < num_links_per_link_ * num_nodes_per_blade_; j += num_links_per_link_) {
std::string id = "local_link_from_router_" + std::to_string(i) + "_to_node_" +
std::to_string(j / num_links_per_link_) + "_" + std::to_string(uniqueId);
- this->generate_link(id, 1, &linkup, &linkdown);
+ generate_link(id, 1, &linkup, &linkdown);
- this->routers_[i].my_nodes_[j] = linkup;
- if (this->sharing_policy_ == s4u::Link::SharingPolicy::SPLITDUPLEX)
- this->routers_[i].my_nodes_[j + 1] = linkdown;
+ routers_[i].my_nodes_[j] = linkup;
+ if (get_link_sharing_policy() == s4u::Link::SharingPolicy::SPLITDUPLEX)
+ routers_[i].my_nodes_[j + 1] = linkdown;
uniqueId++;
}
}
// Green links from routers to same chassis routers - alltoall
- for (unsigned int i = 0; i < this->num_groups_ * this->num_chassis_per_group_; i++) {
- for (unsigned int j = 0; j < this->num_blades_per_chassis_; j++) {
- for (unsigned int k = j + 1; k < this->num_blades_per_chassis_; k++) {
+ for (unsigned int i = 0; i < num_groups_ * num_chassis_per_group_; i++) {
+ for (unsigned int j = 0; j < num_blades_per_chassis_; j++) {
+ for (unsigned int k = j + 1; k < num_blades_per_chassis_; k++) {
std::string id = "green_link_in_chassis_" + std::to_string(i % num_chassis_per_group_) + "_between_routers_" +
std::to_string(j) + "_and_" + std::to_string(k) + "_" + std::to_string(uniqueId);
- this->generate_link(id, this->num_links_green_, &linkup, &linkdown);
+ generate_link(id, num_links_green_, &linkup, &linkdown);
- this->routers_[i * num_blades_per_chassis_ + j].green_links_[k] = linkup;
- this->routers_[i * num_blades_per_chassis_ + k].green_links_[j] = linkdown;
+ routers_[i * num_blades_per_chassis_ + j].green_links_[k] = linkup;
+ routers_[i * num_blades_per_chassis_ + k].green_links_[j] = linkdown;
uniqueId++;
}
}
}
// Black links from routers to same group routers - alltoall
- for (unsigned int i = 0; i < this->num_groups_; i++) {
- for (unsigned int j = 0; j < this->num_chassis_per_group_; j++) {
- for (unsigned int k = j + 1; k < this->num_chassis_per_group_; k++) {
- for (unsigned int l = 0; l < this->num_blades_per_chassis_; l++) {
+ for (unsigned int i = 0; i < num_groups_; i++) {
+ for (unsigned int j = 0; j < num_chassis_per_group_; j++) {
+ for (unsigned int k = j + 1; k < num_chassis_per_group_; k++) {
+ for (unsigned int l = 0; l < num_blades_per_chassis_; l++) {
std::string id = "black_link_in_group_" + std::to_string(i) + "_between_chassis_" + std::to_string(j) +
- "_and_" + std::to_string(k) +"_blade_" + std::to_string(l) + "_" + std::to_string(uniqueId);
- this->generate_link(id, this->num_links_black_, &linkup, &linkdown);
+ "_and_" + std::to_string(k) + "_blade_" + std::to_string(l) + "_" + std::to_string(uniqueId);
+ generate_link(id, num_links_black_, &linkup, &linkdown);
- this->routers_[i * num_blades_per_chassis_ * num_chassis_per_group_ + j * num_blades_per_chassis_ + l]
+ routers_[i * num_blades_per_chassis_ * num_chassis_per_group_ + j * num_blades_per_chassis_ + l]
.black_links_[k] = linkup;
- this->routers_[i * num_blades_per_chassis_ * num_chassis_per_group_ + k * num_blades_per_chassis_ + l]
+ routers_[i * num_blades_per_chassis_ * num_chassis_per_group_ + k * num_blades_per_chassis_ + l]
.black_links_[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->num_groups_; i++) {
- for (unsigned int j = i + 1; j < this->num_groups_; j++) {
- unsigned int routernumi = i * num_blades_per_chassis_ * num_chassis_per_group_ + j;
- unsigned int routernumj = j * num_blades_per_chassis_ * num_chassis_per_group_ + i;
- std::string id = "blue_link_between_group_"+ std::to_string(i) +"_and_" + std::to_string(j) +"_routers_" +
- std::to_string(routernumi) + "_and_" + std::to_string(routernumj) + "_" + std::to_string(uniqueId);
- this->generate_link(id, this->num_links_blue_, &linkup, &linkdown);
-
- this->routers_[routernumi].blue_link_ = linkup;
- this->routers_[routernumj].blue_link_ = linkdown;
+ for (unsigned int i = 0; i < num_groups_; i++) {
+ for (unsigned int j = i + 1; j < num_groups_; j++) {
+ unsigned int routernumi = i * num_blades_per_chassis_ * num_chassis_per_group_ + j;
+ unsigned int routernumj = j * num_blades_per_chassis_ * num_chassis_per_group_ + i;
+ std::string id = "blue_link_between_group_" + std::to_string(i) + "_and_" + std::to_string(j) + "_routers_" +
+ std::to_string(routernumi) + "_and_" + std::to_string(routernumj) + "_" +
+ std::to_string(uniqueId);
+ generate_link(id, num_links_blue_, &linkup, &linkdown);
+
+ routers_[routernumi].blue_link_ = linkup;
+ routers_[routernumj].blue_link_ = linkdown;
uniqueId++;
}
}
}
-void DragonflyZone::get_local_route(NetPoint* src, NetPoint* dst, RouteCreationArgs* route, double* latency)
+void DragonflyZone::get_local_route(const NetPoint* src, const NetPoint* dst, Route* route, double* latency)
{
// Minimal routing version.
// TODO : non-minimal random one, and adaptive ?
if (dst->is_router() || src->is_router())
return;
- XBT_VERB("dragonfly getLocalRoute from '%s'[%u] to '%s'[%u]", src->get_cname(), src->id(), dst->get_cname(),
+ XBT_VERB("dragonfly getLocalRoute from '%s'[%lu] to '%s'[%lu]", src->get_cname(), src->id(), dst->get_cname(),
dst->id());
- if ((src->id() == dst->id()) && has_loopback_) {
- std::pair<resource::LinkImpl*, resource::LinkImpl*> info = private_links_.at(node_pos(src->id()));
+ if ((src->id() == dst->id()) && has_loopback()) {
+ resource::LinkImpl* uplink = get_uplink_from(node_pos(src->id()));
- route->link_list.push_back(info.first);
- if (latency)
- *latency += info.first->get_latency();
+ add_link_latency(route->link_list_, uplink, latency);
return;
}
XBT_DEBUG("dst : %u group, %u chassis, %u blade, %u node", targetCoords.group, targetCoords.chassis,
targetCoords.blade, targetCoords.node);
- DragonflyRouter* myRouter = &routers_[myCoords.group * (num_chassis_per_group_ * num_blades_per_chassis_) +
+ DragonflyRouter* myRouter = &routers_[myCoords.group * (num_chassis_per_group_ * num_blades_per_chassis_) +
myCoords.chassis * num_blades_per_chassis_ + myCoords.blade];
- DragonflyRouter* targetRouter = &routers_[targetCoords.group * (num_chassis_per_group_ * num_blades_per_chassis_) +
+ DragonflyRouter* targetRouter = &routers_[targetCoords.group * (num_chassis_per_group_ * num_blades_per_chassis_) +
targetCoords.chassis * num_blades_per_chassis_ + targetCoords.blade];
DragonflyRouter* currentRouter = myRouter;
- // node->router local link
- route->link_list.push_back(myRouter->my_nodes_[myCoords.node * num_links_per_link_]);
- if (latency)
- *latency += myRouter->my_nodes_[myCoords.node * num_links_per_link_]->get_latency();
-
- if (has_limiter_) { // limiter for sender
- std::pair<resource::LinkImpl*, resource::LinkImpl*> info = private_links_.at(node_pos_with_loopback(src->id()));
- route->link_list.push_back(info.first);
+ if (has_limiter()) { // limiter for sender
+ route->link_list_.push_back(get_uplink_from(node_pos_with_loopback(src->id())));
}
+ // node->router local link
+ add_link_latency(route->link_list_, myRouter->my_nodes_[static_cast<size_t>(myCoords.node) * num_links_per_link_],
+ latency);
+
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.group) {
+ if (currentRouter->limiter_)
+ route->link_list_.push_back(currentRouter->limiter_);
// go to the nth router in our chassis
- route->link_list.push_back(currentRouter->green_links_[targetCoords.group]);
- if (latency)
- *latency += currentRouter->green_links_[targetCoords.group]->get_latency();
+ add_link_latency(route->link_list_, currentRouter->green_links_[targetCoords.group], latency);
currentRouter = &routers_[myCoords.group * (num_chassis_per_group_ * num_blades_per_chassis_) +
myCoords.chassis * num_blades_per_chassis_ + targetCoords.group];
}
if (currentRouter->chassis_ != 0) {
// go to the first chassis of our group
- route->link_list.push_back(currentRouter->black_links_[0]);
- if (latency)
- *latency += currentRouter->black_links_[0]->get_latency();
+ if (currentRouter->limiter_)
+ route->link_list_.push_back(currentRouter->limiter_);
+ add_link_latency(route->link_list_, currentRouter->black_links_[0], latency);
currentRouter =
&routers_[myCoords.group * (num_chassis_per_group_ * num_blades_per_chassis_) + targetCoords.group];
}
// go to destination group - the only optical hop
- route->link_list.push_back(currentRouter->blue_link_);
- if (latency)
- *latency += currentRouter->blue_link_->get_latency();
+ add_link_latency(route->link_list_, currentRouter->blue_link_, latency);
+ if (currentRouter->limiter_)
+ route->link_list_.push_back(currentRouter->limiter_);
currentRouter =
&routers_[targetCoords.group * (num_chassis_per_group_ * num_blades_per_chassis_) + myCoords.group];
}
// same group, but same blade ?
if (targetRouter->blade_ != currentRouter->blade_) {
- route->link_list.push_back(currentRouter->green_links_[targetCoords.blade]);
- if (latency)
- *latency += currentRouter->green_links_[targetCoords.blade]->get_latency();
+ if (currentRouter->limiter_)
+ route->link_list_.push_back(currentRouter->limiter_);
+ add_link_latency(route->link_list_, currentRouter->green_links_[targetCoords.blade], latency);
currentRouter =
&routers_[targetCoords.group * (num_chassis_per_group_ * num_blades_per_chassis_) + targetCoords.blade];
}
// same blade, but same chassis ?
if (targetRouter->chassis_ != currentRouter->chassis_) {
- route->link_list.push_back(currentRouter->black_links_[targetCoords.chassis]);
- if (latency)
- *latency += currentRouter->black_links_[targetCoords.chassis]->get_latency();
+ if (currentRouter->limiter_)
+ route->link_list_.push_back(currentRouter->limiter_);
+ add_link_latency(route->link_list_, currentRouter->black_links_[targetCoords.chassis], latency);
}
}
- if (has_limiter_) { // limiter for receiver
- std::pair<resource::LinkImpl*, resource::LinkImpl*> info = private_links_.at(node_pos_with_loopback(dst->id()));
- route->link_list.push_back(info.first);
+ // router->node local link
+ if (targetRouter->limiter_)
+ route->link_list_.push_back(targetRouter->limiter_);
+ add_link_latency(route->link_list_,
+ targetRouter->my_nodes_[targetCoords.node * num_links_per_link_ + num_links_per_link_ - 1], latency);
+
+ if (has_limiter()) { // limiter for receiver
+ route->link_list_.push_back(get_downlink_to(node_pos_with_loopback(dst->id())));
}
- // router->node local link
- route->link_list.push_back(
- targetRouter->my_nodes_[targetCoords.node * num_links_per_link_ + num_links_per_link_ - 1]);
- if (latency)
- *latency +=
- targetRouter->my_nodes_[targetCoords.node * num_links_per_link_ + num_links_per_link_ - 1]->get_latency();
+ // set gateways (if any)
+ route->gw_src_ = get_gateway(src->id());
+ route->gw_dst_ = get_gateway(dst->id());
}
+} // namespace routing
+} // namespace kernel
+
+namespace s4u {
+DragonflyParams::DragonflyParams(const std::pair<unsigned int, unsigned int>& groups,
+ const std::pair<unsigned int, unsigned int>& chassis,
+ const std::pair<unsigned int, unsigned int>& routers, unsigned int nodes)
+ : groups(groups), chassis(chassis), routers(routers), nodes(nodes)
+{
+ if (groups.first == 0)
+ throw std::invalid_argument("Dragonfly: Invalid number of groups, must be > 0");
+ if (groups.second == 0)
+ throw std::invalid_argument("Dragonfly: Invalid number of blue (groups) links, must be > 0");
+ if (chassis.first == 0)
+ throw std::invalid_argument("Dragonfly: Invalid number of chassis, must be > 0");
+ if (chassis.second == 0)
+ throw std::invalid_argument("Dragonfly: Invalid number of black (chassis) links, must be > 0");
+ if (routers.first == 0)
+ throw std::invalid_argument("Dragonfly: Invalid number of routers, must be > 0");
+ if (routers.second == 0)
+ throw std::invalid_argument("Dragonfly: Invalid number of green (routers) links, must be > 0");
+ if (nodes == 0)
+ throw std::invalid_argument("Dragonfly: Invalid number of nodes, must be > 0");
}
+
+NetZone* create_dragonfly_zone(const std::string& name, const NetZone* parent, const DragonflyParams& params,
+ const ClusterCallbacks& set_callbacks, double bandwidth, double latency,
+ Link::SharingPolicy sharing_policy)
+{
+ /* initial checks */
+ if (bandwidth <= 0)
+ throw std::invalid_argument("DragonflyZone: incorrect bandwidth for internode communication, bw=" +
+ std::to_string(bandwidth));
+ if (latency < 0)
+ throw std::invalid_argument("DragonflyZone: incorrect latency for internode communication, lat=" +
+ std::to_string(latency));
+
+ /* creating zone */
+ auto* zone = new kernel::routing::DragonflyZone(name);
+ zone->set_topology(params.groups.first, params.groups.second, params.chassis.first, params.chassis.second,
+ params.routers.first, params.routers.second, params.nodes);
+ if (parent)
+ zone->set_parent(parent->get_impl());
+ zone->set_link_characteristics(bandwidth, latency, sharing_policy);
+
+ /* populating it */
+ std::vector<unsigned long> dimensions = {params.groups.first, params.chassis.first, params.routers.first,
+ params.nodes};
+ int tot_elements = std::accumulate(dimensions.begin(), dimensions.end(), 1, std::multiplies<>());
+ for (int i = 0; i < tot_elements; i++) {
+ kernel::routing::NetPoint* netpoint;
+ Link* limiter;
+ Link* loopback;
+ zone->fill_leaf_from_cb(i, dimensions, set_callbacks, &netpoint, &loopback, &limiter);
+ }
+ zone->build_upper_levels(set_callbacks);
+
+ return zone->get_iface();
}
-} // namespace
+} // namespace s4u
+
+} // namespace simgrid
