src/surf/surf_routing_vivaldi.cpp

   1 #include "surf_routing_vivaldi.hpp"
   2 #include "network_interface.hpp"
   3
   4 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route_vivaldi, surf, "Routing part of surf");
   5
   6 static XBT_INLINE double euclidean_dist_comp(int index, xbt_dynar_t src, xbt_dynar_t dst) {
   7   double src_coord, dst_coord;
   8
   9   src_coord = xbt_dynar_get_as(src, index, double);
  10   dst_coord = xbt_dynar_get_as(dst, index, double);
  11
  12   return (src_coord-dst_coord)*(src_coord-dst_coord);
  13 }
  14
  15 AS_t model_vivaldi_create(void)
  16 {
  17   return new AsVivaldi();
  18 }
  19
  20 void AsVivaldi::getRouteAndLatency(RoutingEdgePtr src, RoutingEdgePtr dst, sg_platf_route_cbarg_t route, double *lat)
  21 {
  22   s_surf_parsing_link_up_down_t info;
  23
  24   XBT_DEBUG("vivaldi_get_route_and_latency from '%s'[%d] '%s'[%d]",
  25                   src->p_name, src->m_id, dst->p_name, dst->m_id);
  26
  27   if(src->p_rcType == SURF_NETWORK_ELEMENT_AS) {
  28     route->gw_src = (sg_routing_edge_t) xbt_lib_get_or_null(as_router_lib, ROUTER_PEER(src->p_name), ROUTING_ASR_LEVEL);
  29     route->gw_dst = (sg_routing_edge_t) xbt_lib_get_or_null(as_router_lib, ROUTER_PEER(dst->p_name), ROUTING_ASR_LEVEL);
  30   }
  31
  32   double euclidean_dist;
  33   xbt_dynar_t src_ctn, dst_ctn;
  34   char *tmp_src_name, *tmp_dst_name;
  35
  36   if(src->p_rcType == SURF_NETWORK_ELEMENT_HOST){
  37     tmp_src_name = HOST_PEER(src->p_name);
  38
  39     if(p_linkUpDownList){
  40       info = xbt_dynar_get_as(p_linkUpDownList, src->m_id, s_surf_parsing_link_up_down_t);
  41       if(info.link_up) { // link up
  42         xbt_dynar_push_as(route->link_list, void*, info.link_up);
  43         if (lat)
  44           *lat += dynamic_cast<NetworkLinkPtr>(static_cast<ResourcePtr>(info.link_up))->getLatency();
  45       }
  46     }
  47     src_ctn = (xbt_dynar_t) xbt_lib_get_or_null(host_lib, tmp_src_name, COORD_HOST_LEVEL);
  48     if(!src_ctn ) src_ctn = (xbt_dynar_t) xbt_lib_get_or_null(host_lib, src->p_name, COORD_HOST_LEVEL);
  49   }
  50   else if(src->p_rcType == SURF_NETWORK_ELEMENT_ROUTER || src->p_rcType == SURF_NETWORK_ELEMENT_AS){
  51     tmp_src_name = ROUTER_PEER(src->p_name);
  52     src_ctn = (xbt_dynar_t) xbt_lib_get_or_null(as_router_lib, tmp_src_name, COORD_ASR_LEVEL);
  53   }
  54   else{
  55     THROW_IMPOSSIBLE;
  56   }
  57
  58   if(dst->p_rcType == SURF_NETWORK_ELEMENT_HOST){
  59     tmp_dst_name = HOST_PEER(dst->p_name);
  60
  61     if(p_linkUpDownList){
  62       info = xbt_dynar_get_as(p_linkUpDownList, dst->m_id, s_surf_parsing_link_up_down_t);
  63       if(info.link_down) { // link down
  64         xbt_dynar_push_as(route->link_list,void*,info.link_down);
  65         if (lat)
  66           *lat += dynamic_cast<NetworkLinkPtr>(static_cast<ResourcePtr>(info.link_down))->getLatency();
  67       }
  68     }
  69     dst_ctn = (xbt_dynar_t) xbt_lib_get_or_null(host_lib, tmp_dst_name, COORD_HOST_LEVEL);
  70     if(!dst_ctn ) dst_ctn = (xbt_dynar_t) xbt_lib_get_or_null(host_lib, dst->p_name, COORD_HOST_LEVEL);
  71   }
  72   else if(dst->p_rcType == SURF_NETWORK_ELEMENT_ROUTER || dst->p_rcType == SURF_NETWORK_ELEMENT_AS){
  73     tmp_dst_name = ROUTER_PEER(dst->p_name);
  74     dst_ctn = (xbt_dynar_t) xbt_lib_get_or_null(as_router_lib, tmp_dst_name, COORD_ASR_LEVEL);
  75   }
  76   else{
  77     THROW_IMPOSSIBLE;
  78   }
  79
  80   xbt_assert(src_ctn,"No coordinate found for element '%s'",tmp_src_name);
  81   xbt_assert(dst_ctn,"No coordinate found for element '%s'",tmp_dst_name);
  82   free(tmp_src_name);
  83   free(tmp_dst_name);
  84
  85   euclidean_dist = sqrt (euclidean_dist_comp(0,src_ctn,dst_ctn)+euclidean_dist_comp(1,src_ctn,dst_ctn))
  86                       + fabs(xbt_dynar_get_as(src_ctn, 2, double))+fabs(xbt_dynar_get_as(dst_ctn, 2, double));
  87
  88   if (lat){
  89     XBT_DEBUG("Updating latency %f += %f",*lat,euclidean_dist);
  90     *lat += euclidean_dist / 1000.0; //From .ms to .s
  91   }
  92 }
  93
  94 int AsVivaldi::parsePU(RoutingEdgePtr elm) {
  95   XBT_DEBUG("Load process unit \"%s\"", elm->p_name);
  96   xbt_dynar_push_as(p_indexNetworkElm, sg_routing_edge_t, elm);
  97   return xbt_dynar_length(p_indexNetworkElm)-1;
  98 }