-/* Copyright (c) 2014-2019. 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. */
namespace simgrid {
namespace kernel {
namespace routing {
-TorusZone::TorusZone(NetZoneImpl* father, const std::string& name, resource::NetworkModel* netmodel)
- : ClusterZone(father, name, netmodel)
-{
-}
void TorusZone::create_links_for_node(ClusterCreationArgs* cluster, int id, int rank, unsigned int position)
{
int current_dimension = dimensions_[j]; // which dimension are we currently in?
// we need to iterate over all dimensions and create all links there
// The other node the link connects
- int neighbor_rank_id = ((static_cast<int>(rank) / dim_product) % current_dimension == current_dimension - 1)
+ int neighbor_rank_id = ((rank / dim_product) % current_dimension == current_dimension - 1)
? rank - (current_dimension - 1) * dim_product
: rank + dim_product;
// name of neighbor is not right for non contiguous cluster radicals (as id != rank in this case)
std::string link_id =
std::string(cluster->id) + "_link_from_" + std::to_string(id) + "_to_" + std::to_string(neighbor_rank_id);
- link.id = link_id;
+ link.id = link_id;
link.bandwidths.push_back(cluster->bw);
- link.latency = cluster->lat;
- link.policy = cluster->sharing_policy;
+ link.latency = cluster->lat;
+ link.policy = cluster->sharing_policy;
sg_platf_new_link(&link);
resource::LinkImpl* linkUp;
resource::LinkImpl* linkDown;
* Note that position rankId*(xbt_dynar_length(dimensions)+has_loopback?+has_limiter?)
* holds the link "rankId->rankId"
*/
- private_links_.insert({position + j, {linkUp, linkDown}});
+ add_private_link_at(position + j, {linkUp, linkDown});
dim_product *= current_dimension;
}
- rank++;
}
void TorusZone::parse_specific_arguments(ClusterCreationArgs* cluster)
for (auto const& group : dimensions)
dimensions_.push_back(surf_parse_get_int(group));
- num_links_per_node_ = dimensions_.size();
+ set_num_links_per_node(dimensions_.size());
}
}
void TorusZone::get_local_route(NetPoint* src, NetPoint* dst, RouteCreationArgs* route, double* lat)
{
-
XBT_VERB("torus getLocalRoute from '%s'[%u] to '%s'[%u]", src->get_cname(), src->id(), dst->get_cname(), dst->id());
if (dst->is_router() || src->is_router())
return;
- if (src->id() == dst->id() && has_loopback_) {
- std::pair<resource::LinkImpl*, resource::LinkImpl*> info = private_links_.at(src->id() * num_links_per_node_);
+ if (src->id() == dst->id() && has_loopback()) {
+ resource::LinkImpl* uplink = get_uplink_from(node_pos(src->id()));
- route->link_list.push_back(info.first);
+ route->link_list.push_back(uplink);
if (lat)
- *lat += info.first->get_latency();
+ *lat += uplink->get_latency();
return;
}
* both arrays, we can easily assess whether we need to route into this dimension or not.
*/
const unsigned int dsize = dimensions_.size();
- unsigned int myCoords[dsize];
- unsigned int targetCoords[dsize];
+ std::vector<unsigned int> myCoords(dsize);
+ std::vector<unsigned int> targetCoords(dsize);
unsigned int dim_size_product = 1;
for (unsigned i = 0; i < dsize; i++) {
unsigned cur_dim_size = dimensions_[i];
const unsigned cur_dim = dimensions_[j];
// current_node/dim_product = position in current dimension
if ((current_node / dim_product) % cur_dim != (dst->id() / dim_product) % cur_dim) {
-
if ((targetCoords[j] > myCoords[j] &&
targetCoords[j] <= myCoords[j] + cur_dim / 2) // Is the target node on the right, without the wrap-around?
- || (myCoords[j] > cur_dim / 2 &&
- (myCoords[j] + cur_dim / 2) % cur_dim >=
- targetCoords[j])) { // Or do we need to use the wrap around to reach it?
+ ||
+ (myCoords[j] > cur_dim / 2 && (myCoords[j] + cur_dim / 2) % cur_dim >=
+ targetCoords[j])) { // Or do we need to use the wrap around to reach it?
if ((current_node / dim_product) % cur_dim == cur_dim - 1)
next_node = (current_node + dim_product - dim_product * cur_dim);
else
next_node = (current_node + dim_product);
// HERE: We use *CURRENT* node for calculation (as opposed to next_node)
- nodeOffset = current_node * (num_links_per_node_);
- linkOffset = nodeOffset + (has_loopback_ ? 1 : 0) + (has_limiter_ ? 1 : 0) + j;
+ nodeOffset = node_pos(current_node);
+ linkOffset = node_pos_with_loopback_limiter(current_node) + j;
use_lnk_up = true;
assert(linkOffset >= 0);
} else { // Route to the left
next_node = (current_node - dim_product);
// HERE: We use *next* node for calculation (as opposed to current_node!)
- nodeOffset = next_node * (num_links_per_node_);
- linkOffset = nodeOffset + j + (has_loopback_ ? 1 : 0) + (has_limiter_ ? 1 : 0);
+ nodeOffset = node_pos(next_node);
+ linkOffset = node_pos_with_loopback_limiter(next_node) + j;
use_lnk_up = false;
assert(linkOffset >= 0);
dim_product *= cur_dim;
}
- std::pair<resource::LinkImpl*, resource::LinkImpl*> info;
-
- if (has_limiter_) { // limiter for sender
- info = private_links_.at(nodeOffset + (has_loopback_ ? 1 : 0));
- 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(nodeOffset)));
}
- info = private_links_.at(linkOffset);
- resource::LinkImpl* lnk = use_lnk_up ? info.first : info.second;
+ resource::LinkImpl* lnk;
+ if (use_lnk_up)
+ lnk = get_uplink_from(linkOffset);
+ else
+ lnk = get_downlink_to(linkOffset);
route->link_list.push_back(lnk);
if (lat)
current_node = next_node;
}
}
+} // namespace routing
+} // namespace kernel
+
+namespace s4u {
+NetZone* create_torus_zone(const std::string& name)
+{
+ return (new kernel::routing::TorusZone(name))->get_iface();
}
-}
-} // namespace
+} // namespace s4u
+
+} // namespace simgrid