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->getName(), src->getId(), dst->getName(), dst->getId());
  26
  27   if(src->getRcType() == SURF_NETWORK_ELEMENT_AS) {
  28     char *src_name = ROUTER_PEER(src->getName());
  29     char *dst_name = ROUTER_PEER(dst->getName());
  30     route->gw_src = (sg_routing_edge_t) xbt_lib_get_or_null(as_router_lib, src_name, ROUTING_ASR_LEVEL);
  31     route->gw_dst = (sg_routing_edge_t) xbt_lib_get_or_null(as_router_lib, dst_name, ROUTING_ASR_LEVEL);
  32     xbt_free(src_name);
  33     xbt_free(dst_name);
  34   }
  35
  36   double euclidean_dist;
  37   xbt_dynar_t src_ctn, dst_ctn;
  38   char *tmp_src_name, *tmp_dst_name;
  39
  40   if(src->getRcType() == SURF_NETWORK_ELEMENT_HOST){
  41     tmp_src_name = HOST_PEER(src->getName());
  42
  43     if(p_linkUpDownList){
  44       info = xbt_dynar_get_as(p_linkUpDownList, src->getId(), s_surf_parsing_link_up_down_t);
  45       if(info.link_up) { // link up
  46         xbt_dynar_push_as(route->link_list, void*, info.link_up);
  47         if (lat)
  48           *lat += static_cast<NetworkLinkPtr>(info.link_up)->getLatency();
  49       }
  50     }
  51     src_ctn = (xbt_dynar_t) xbt_lib_get_or_null(host_lib, tmp_src_name, COORD_HOST_LEVEL);
  52     if(!src_ctn ) src_ctn = (xbt_dynar_t) xbt_lib_get_or_null(host_lib, src->getName(), COORD_HOST_LEVEL);
  53   }
  54   else if(src->getRcType() == SURF_NETWORK_ELEMENT_ROUTER || src->getRcType() == SURF_NETWORK_ELEMENT_AS){
  55     tmp_src_name = ROUTER_PEER(src->getName());
  56     src_ctn = (xbt_dynar_t) xbt_lib_get_or_null(as_router_lib, tmp_src_name, COORD_ASR_LEVEL);
  57   }
  58   else{
  59     THROW_IMPOSSIBLE;
  60   }
  61
  62   if(dst->getRcType() == SURF_NETWORK_ELEMENT_HOST){
  63     tmp_dst_name = HOST_PEER(dst->getName());
  64
  65     if(p_linkUpDownList){
  66       info = xbt_dynar_get_as(p_linkUpDownList, dst->getId(), s_surf_parsing_link_up_down_t);
  67       if(info.link_down) { // link down
  68         xbt_dynar_push_as(route->link_list,void*,info.link_down);
  69         if (lat)
  70           *lat += static_cast<NetworkLinkPtr>(info.link_down)->getLatency();
  71       }
  72     }
  73     dst_ctn = (xbt_dynar_t) xbt_lib_get_or_null(host_lib, tmp_dst_name, COORD_HOST_LEVEL);
  74     if(!dst_ctn ) dst_ctn = (xbt_dynar_t) xbt_lib_get_or_null(host_lib, dst->getName(), COORD_HOST_LEVEL);
  75   }
  76   else if(dst->getRcType() == SURF_NETWORK_ELEMENT_ROUTER || dst->getRcType() == SURF_NETWORK_ELEMENT_AS){
  77     tmp_dst_name = ROUTER_PEER(dst->getName());
  78     dst_ctn = (xbt_dynar_t) xbt_lib_get_or_null(as_router_lib, tmp_dst_name, COORD_ASR_LEVEL);
  79   }
  80   else{
  81     THROW_IMPOSSIBLE;
  82   }
  83
  84   xbt_assert(src_ctn,"No coordinate found for element '%s'",tmp_src_name);
  85   xbt_assert(dst_ctn,"No coordinate found for element '%s'",tmp_dst_name);
  86   free(tmp_src_name);
  87   free(tmp_dst_name);
  88
  89   euclidean_dist = sqrt (euclidean_dist_comp(0,src_ctn,dst_ctn)+euclidean_dist_comp(1,src_ctn,dst_ctn))
  90                       + fabs(xbt_dynar_get_as(src_ctn, 2, double))+fabs(xbt_dynar_get_as(dst_ctn, 2, double));
  91
  92   if (lat){
  93     XBT_DEBUG("Updating latency %f += %f",*lat,euclidean_dist);
  94     *lat += euclidean_dist / 1000.0; //From .ms to .s
  95   }
  96 }
  97
  98 int AsVivaldi::parsePU(RoutingEdgePtr elm) {
  99   XBT_DEBUG("Load process unit \"%s\"", elm->getName());
 100   xbt_dynar_push_as(p_indexNetworkElm, sg_routing_edge_t, elm);
 101   return xbt_dynar_length(p_indexNetworkElm)-1;
 102 }