src/surf/surf_routing_vivaldi.cpp

   1 #include "surf_routing_private.h"
   2 #include "surf_routing_vivaldi.hpp"
   3
   4 extern "C" {
   5   XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route_vivaldi, surf, "Routing part of surf");
   6 }
   7
   8 static XBT_INLINE double euclidean_dist_comp(int index, xbt_dynar_t src, xbt_dynar_t dst) {
   9   double src_coord, dst_coord;
  10
  11   src_coord = xbt_dynar_get_as(src, index, double);
  12   dst_coord = xbt_dynar_get_as(dst, index, double);
  13
  14   return (src_coord-dst_coord)*(src_coord-dst_coord);
  15 }
  16
  17 AS_t model_vivaldi_create(void)
  18 {
  19   return new AsVivaldi();
  20 }
  21
  22 void AsVivaldi::getRouteAndLatency(RoutingEdgePtr src, RoutingEdgePtr dst, sg_platf_route_cbarg_t route, double *lat)
  23 {
  24   s_surf_parsing_link_up_down_t info;
  25
  26   XBT_DEBUG("vivaldi_get_route_and_latency from '%s'[%d] '%s'[%d]",
  27                   src->p_name, src->m_id, dst->p_name, dst->m_id);
  28
  29   if(src->p_rcType == SURF_NETWORK_ELEMENT_AS) {
  30     route->gw_src = (sg_routing_edge_t) xbt_lib_get_or_null(as_router_lib, ROUTER_PEER(src->p_name), ROUTING_ASR_LEVEL);
  31     route->gw_dst = (sg_routing_edge_t) xbt_lib_get_or_null(as_router_lib, ROUTER_PEER(dst->p_name), ROUTING_ASR_LEVEL);
  32   }
  33
  34   double euclidean_dist;
  35   xbt_dynar_t src_ctn, dst_ctn;
  36   char *tmp_src_name, *tmp_dst_name;
  37
  38   if(src->p_rcType == SURF_NETWORK_ELEMENT_HOST){
  39     tmp_src_name = HOST_PEER(src->p_name);
  40
  41     if(p_linkUpDownList){
  42       info = xbt_dynar_get_as(p_linkUpDownList, src->m_id, s_surf_parsing_link_up_down_t);
  43       if(info.link_up) { // link up
  44         xbt_dynar_push_as(route->link_list, void*, info.link_up);
  45         if (lat)
  46           *lat += static_cast<NetworkCm02LinkPtr>(info.link_up)->getLatency();
  47       }
  48     }
  49     src_ctn = (xbt_dynar_t) xbt_lib_get_or_null(host_lib, tmp_src_name, COORD_HOST_LEVEL);
  50     if(!src_ctn ) src_ctn = (xbt_dynar_t) xbt_lib_get_or_null(host_lib, src->p_name, COORD_HOST_LEVEL);
  51   }
  52   else if(src->p_rcType == SURF_NETWORK_ELEMENT_ROUTER || src->p_rcType == SURF_NETWORK_ELEMENT_AS){
  53     tmp_src_name = ROUTER_PEER(src->p_name);
  54     src_ctn = (xbt_dynar_t) xbt_lib_get_or_null(as_router_lib, tmp_src_name, COORD_ASR_LEVEL);
  55   }
  56   else{
  57     THROW_IMPOSSIBLE;
  58   }
  59
  60   if(dst->p_rcType == SURF_NETWORK_ELEMENT_HOST){
  61     tmp_dst_name = HOST_PEER(dst->p_name);
  62
  63     if(p_linkUpDownList){
  64       info = xbt_dynar_get_as(p_linkUpDownList, dst->m_id, s_surf_parsing_link_up_down_t);
  65       if(info.link_down) { // link down
  66         xbt_dynar_push_as(route->link_list,void*,info.link_down);
  67         if (lat)
  68           *lat += static_cast<NetworkCm02LinkPtr>(info.link_down)->getLatency();
  69       }
  70     }
  71     dst_ctn = (xbt_dynar_t) xbt_lib_get_or_null(host_lib, tmp_dst_name, COORD_HOST_LEVEL);
  72     if(!dst_ctn ) dst_ctn = (xbt_dynar_t) xbt_lib_get_or_null(host_lib, dst->p_name, COORD_HOST_LEVEL);
  73   }
  74   else if(dst->p_rcType == SURF_NETWORK_ELEMENT_ROUTER || dst->p_rcType == SURF_NETWORK_ELEMENT_AS){
  75     tmp_dst_name = ROUTER_PEER(dst->p_name);
  76     dst_ctn = (xbt_dynar_t) xbt_lib_get_or_null(as_router_lib, tmp_dst_name, COORD_ASR_LEVEL);
  77   }
  78   else{
  79     THROW_IMPOSSIBLE;
  80   }
  81
  82   xbt_assert(src_ctn,"No coordinate found for element '%s'",tmp_src_name);
  83   xbt_assert(dst_ctn,"No coordinate found for element '%s'",tmp_dst_name);
  84   free(tmp_src_name);
  85   free(tmp_dst_name);
  86
  87   euclidean_dist = sqrt (euclidean_dist_comp(0,src_ctn,dst_ctn)+euclidean_dist_comp(1,src_ctn,dst_ctn))
  88                       + fabs(xbt_dynar_get_as(src_ctn, 2, double))+fabs(xbt_dynar_get_as(dst_ctn, 2, double));
  89
  90   if (lat){
  91     XBT_DEBUG("Updating latency %f += %f",*lat,euclidean_dist);
  92     *lat += euclidean_dist / 1000.0; //From .ms to .s
  93   }
  94 }
  95
  96 int AsVivaldi::parsePU(RoutingEdgePtr elm) {
  97   XBT_DEBUG("Load process unit \"%s\"", elm->p_name);
  98   xbt_dynar_push_as(p_indexNetworkElm, sg_routing_edge_t, elm);
  99   return xbt_dynar_length(p_indexNetworkElm)-1;
 100 }