1 /* Copyright (c) 2009, 2010, 2011. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
6 #include "surf_routing_private.h"
8 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route_vivaldi, surf, "Routing part of surf");
10 static XBT_INLINE double euclidean_dist_comp(int index, xbt_dynar_t src, xbt_dynar_t dst) {
11 double src_coord, dst_coord;
13 src_coord = xbt_dynar_get_as(src, index, double);
14 dst_coord = xbt_dynar_get_as(dst, index, double);
16 return (src_coord-dst_coord)*(src_coord-dst_coord);
19 static void vivaldi_get_route_and_latency(
20 AS_t rc, sg_routing_edge_t src_p, sg_routing_edge_t dst_p,
21 sg_platf_route_cbarg_t route, double *lat)
23 s_surf_parsing_link_up_down_t info;
25 XBT_DEBUG("vivaldi_get_route_and_latency from '%s'[%d] '%s'[%d]",src_p->name,src_p->id,dst_p->name,dst_p->id);
26 char *src = (char*)src_p->name;
27 char *dst = (char*)dst_p->name;
29 if(src_p->rc_type == SURF_NETWORK_ELEMENT_AS) {
30 char *rp_src = ROUTER_PEER(src);
31 char *rp_dst = ROUTER_PEER(dst);
32 route->gw_src = xbt_lib_get_or_null(as_router_lib, rp_src,
34 route->gw_dst = xbt_lib_get_or_null(as_router_lib, rp_dst,
40 double euclidean_dist;
41 xbt_dynar_t src_ctn, dst_ctn;
42 char *tmp_src_name, *tmp_dst_name;
44 if(src_p->rc_type == SURF_NETWORK_ELEMENT_HOST){
45 tmp_src_name = HOST_PEER(src);
47 if(rc->link_up_down_list){
48 info = xbt_dynar_get_as(rc->link_up_down_list,src_p->id,s_surf_parsing_link_up_down_t);
49 if(info.link_up) { // link up
50 xbt_dynar_push_as(route->link_list,void*,info.link_up);
52 *lat += surf_network_model->extension.network.get_link_latency(info.link_up);
55 src_ctn = xbt_lib_get_or_null(host_lib, tmp_src_name, COORD_HOST_LEVEL);
56 if(!src_ctn ) src_ctn = xbt_lib_get_or_null(host_lib, src, COORD_HOST_LEVEL);
58 else if(src_p->rc_type == SURF_NETWORK_ELEMENT_ROUTER || src_p->rc_type == SURF_NETWORK_ELEMENT_AS){
59 tmp_src_name = ROUTER_PEER(src);
60 src_ctn = xbt_lib_get_or_null(as_router_lib, tmp_src_name, COORD_ASR_LEVEL);
66 if(dst_p->rc_type == SURF_NETWORK_ELEMENT_HOST){
67 tmp_dst_name = HOST_PEER(dst);
69 if(rc->link_up_down_list){
70 info = xbt_dynar_get_as(rc->link_up_down_list,dst_p->id,s_surf_parsing_link_up_down_t);
71 if(info.link_down) { // link down
72 xbt_dynar_push_as(route->link_list,void*,info.link_down);
74 *lat += surf_network_model->extension.network.get_link_latency(info.link_down);
77 dst_ctn = xbt_lib_get_or_null(host_lib, tmp_dst_name, COORD_HOST_LEVEL);
78 if(!dst_ctn ) dst_ctn = xbt_lib_get_or_null(host_lib, dst, COORD_HOST_LEVEL);
80 else if(dst_p->rc_type == SURF_NETWORK_ELEMENT_ROUTER || dst_p->rc_type == SURF_NETWORK_ELEMENT_AS){
81 tmp_dst_name = ROUTER_PEER(dst);
82 dst_ctn = xbt_lib_get_or_null(as_router_lib, tmp_dst_name, COORD_ASR_LEVEL);
88 xbt_assert(src_ctn,"No coordinate found for element '%s'",tmp_src_name);
89 xbt_assert(dst_ctn,"No coordinate found for element '%s'",tmp_dst_name);
93 euclidean_dist = sqrt (euclidean_dist_comp(0,src_ctn,dst_ctn)+euclidean_dist_comp(1,src_ctn,dst_ctn))
94 + fabs(xbt_dynar_get_as(src_ctn, 2, double))+fabs(xbt_dynar_get_as(dst_ctn, 2, double));
97 XBT_DEBUG("Updating latency %f += %f",*lat,euclidean_dist);
98 *lat += euclidean_dist / 1000.0; //From .ms to .s
102 static int vivaldi_parse_PU(AS_t rc, sg_routing_edge_t elm) {
103 XBT_DEBUG("Load process unit \"%s\"", elm->name);
104 xbt_dynar_push_as(rc->index_network_elm,sg_routing_edge_t,elm);
105 return xbt_dynar_length(rc->index_network_elm)-1;
108 /* Creation routing model functions */
109 AS_t model_vivaldi_create(void)
111 AS_t new_component = model_generic_create_sized(sizeof *new_component);
113 new_component->get_route_and_latency = vivaldi_get_route_and_latency;
114 new_component->parse_PU = vivaldi_parse_PU;
115 new_component->get_graph = generic_get_graph;
116 return new_component;