this was not supposed to be modified, actually

[simgrid.git] / src / kernel / routing / FatTreeZone.cpp

diff --git a/src/kernel/routing/FatTreeZone.cpp b/src/kernel/routing/FatTreeZone.cpp
index 7f7337d..3c6bfc6 100644 (file)
--- a/src/kernel/routing/FatTreeZone.cpp
+++ b/src/kernel/routing/FatTreeZone.cpp
@@ -20,8 +20,7 @@
 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(ker_routing_fat_tree, ker_routing, "Kernel Fat-Tree Routing");
 
 namespace simgrid {
-namespace kernel {
-namespace routing {
+namespace kernel::routing {
 
 bool FatTreeZone::is_in_sub_tree(const FatTreeNode* root, const FatTreeNode* node) const
 {
@@ -78,8 +77,8 @@ void FatTreeZone::get_local_route(const NetPoint* src, const NetPoint* dst, Rout
     for (unsigned int i = 0; i < currentNode->level; i++)
       d /= this->num_parents_per_node_[i];
 
-    int k = this->num_parents_per_node_[currentNode->level];
-    d     = d % k;
+    int k = this->num_parents_per_node_[currentNode->level] * this->num_port_lower_level_[currentNode->level];
+    d = d % k;
 
     if (currentNode->limiter_link_)
       into->link_list_.push_back(currentNode->limiter_link_);
@@ -94,7 +93,9 @@ void FatTreeZone::get_local_route(const NetPoint* src, const NetPoint* dst, Rout
 
   // Down part
   while (currentNode != destination) {
-    for (unsigned int i = 0; i < currentNode->children.size(); i++) {
+    //pick cable when multiple parallels
+    int d = source->position % this->num_port_lower_level_[currentNode->level - 1];
+    for (unsigned int i = d * this->num_children_per_node_[currentNode->level - 1]; i < currentNode->children.size(); i++) {
       if (i % this->num_children_per_node_[currentNode->level - 1] == destination->label[currentNode->level - 1]) {
         add_link_latency(into->link_list_, currentNode->children[i]->down_link_, latency);
 
@@ -488,8 +489,7 @@ void FatTreeZone::generate_dot_file(const std::string& filename) const
   file << "}";
   file.close();
 }
-} // namespace routing
-} // namespace kernel
+} // namespace kernel::routing
 
 namespace s4u {
 FatTreeParams::FatTreeParams(unsigned int n_levels, const std::vector<unsigned int>& down_links,