-void AsClusterTorus::getRouteAndLatency(NetCard *src, NetCard *dst, sg_platf_route_cbarg_t route, double *lat){
-
- XBT_VERB("torus_get_route_and_latency from '%s'[%d] to '%s'[%d]",
- src->getName(), src->getId(),
- dst->getName(), dst->getId());
-
- if (dst->getRcType() == SURF_NETWORK_ELEMENT_ROUTER || src->getRcType() == SURF_NETWORK_ELEMENT_ROUTER) return;
-
- if((src->getId() == dst->getId()) && p_has_loopback ){
- s_surf_parsing_link_up_down_t info = xbt_dynar_get_as(p_linkUpDownList, src->getId() * p_nb_links_per_node, s_surf_parsing_link_up_down_t);
- xbt_dynar_push_as(route->link_list, void *, info.link_up);
-
- if (lat)
- *lat += static_cast<Link*>(info.link_up)->getLatency();
- return;
- }
-
-
- /**
- * Dimension based routing routes through each dimension consecutively
- * TODO Change to dynamic assignment
- */
- unsigned int j, cur_dim, dim_product = 1;
- int current_node = src->getId();
- int unsigned next_node = 0;
- /**
- * Arrays that hold the coordinates of the current node and
- * the target; comparing the values at the i-th position of
- * both arrays, we can easily assess whether we need to route
- * into this dimension or not.
- */
- unsigned int* myCoords, *targetCoords;
- myCoords = rankId_to_coords(src->getId(), p_dimensions);
- targetCoords = rankId_to_coords(dst->getId(), p_dimensions);
- /**
- * linkOffset describes the offset where the link
- * we want to use is stored
- * (+1 is added because each node has a link from itself to itself,
- * which can only be the case if src->m_id == dst->m_id -- see above
- * for this special case)
- */
- int nodeOffset = (xbt_dynar_length(p_dimensions)+1)*src->getId();
-
- int linkOffset = nodeOffset;
- bool use_lnk_up = false; // Is this link of the form "cur -> next" or "next -> cur"?
- // false means: next -> cur
- while (current_node != dst->getId()) {
- dim_product = 1; // First, we will route in x-dimension
- for (j = 0; j < xbt_dynar_length(p_dimensions); j++) {
- cur_dim = xbt_dynar_get_as(p_dimensions, j, int);
-
- // current_node/dim_product = position in current dimension
- if ((current_node/dim_product) % cur_dim != (dst->getId()/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?
- 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*(p_nb_links_per_node);
- linkOffset = nodeOffset+p_has_loopback+p_has_limiter+j;
- use_lnk_up = true;
- assert(linkOffset >= 0);
- }
- else { // Route to the left
- if ((current_node / dim_product) % cur_dim == 0)
- next_node = (current_node-dim_product+dim_product*cur_dim);
- else
- next_node = (current_node-dim_product);
-
- // HERE: We use *next* node for calculation (as opposed to current_node!)
- nodeOffset = next_node*(p_nb_links_per_node);
- linkOffset = nodeOffset+j+p_has_loopback+p_has_limiter;
- use_lnk_up = false;
-
- assert(linkOffset >= 0);
- }
- XBT_DEBUG("torus_get_route_and_latency - current_node: %i, next_node: %u, linkOffset is %i",
- current_node, next_node, linkOffset);
-
- break;
- }
-
- dim_product *= cur_dim;
- }
-
- s_surf_parsing_link_up_down_t info;
-
- if (p_has_limiter){ // limiter for sender
- info = xbt_dynar_get_as(p_linkUpDownList, nodeOffset + p_has_loopback, s_surf_parsing_link_up_down_t);
- xbt_dynar_push_as(route->link_list, void *, info.link_up);
- }
-
- info = xbt_dynar_get_as(p_linkUpDownList,linkOffset, s_surf_parsing_link_up_down_t);
-
- if (use_lnk_up == false){
- xbt_dynar_push_as(route->link_list,void*,info.link_down);
-
- if (lat)
- *lat += static_cast<Link*>(info.link_down)->getLatency();
- }else{
- xbt_dynar_push_as(route->link_list,void*,info.link_up);
-
- if (lat)
- *lat += static_cast<Link*>(info.link_up)->getLatency();
- }
- current_node = next_node;
- next_node = 0;
- }
- free(myCoords);
- free(targetCoords);
-
-
-
- return;
-}