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Commit 27ee4c52 authored by Misbah Mubarak's avatar Misbah Mubarak
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allowing prog-adaptive in destination group on minimal route

parent 56a4c4ea
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src/networks/model-net/dragonfly-custom.C
View file @ 27ee4c52
......@@ -683,6 +683,9 @@ else
printf("Number of groups not specified. Aborting");
MPI_Abort(MPI_COMM_CODES, 1);
}
if(p->num_groups % 2 == 0 && DF_DALLY == 1)
tw_error(TW_LOC, "\n 1-D dragonfly expects an odd number of groups");
rc = configuration_get_value_int(&config, "PARAMS", "num_col_chans", anno, &p->num_col_chans);
if(rc) {
// printf("\n Number of links connecting chassis not specified, setting to default value 3 ");
......@@ -2670,16 +2673,29 @@ static int do_global_adaptive_routing( router_state * s,
int next_chan = -1;
// decide which routing to take
// get the queue occupancy of both the minimal and non-minimal output ports
int dest_grp_id = dest_router_id / s->params->num_routers;
int intm_grp_id_a = intm_id_a / s->params->num_routers;
int intm_grp_id_b = intm_id_b / s->params->num_routers;
bool local_min = false;
int num_routers = s->params->num_routers;
int dest_grp_id = dest_router_id / num_routers;
int intm_grp_id_a = intm_id_a / num_routers;
int intm_grp_id_b = intm_id_b / num_routers;
assert(intm_grp_id_a >= 0 && intm_grp_id_b >=0);
int my_grp_id = s->router_id / s->params->num_routers;
int my_grp_id = s->router_id / num_routers;
int num_min_chans = connectionList[my_grp_id][dest_grp_id].size();
int num_min_chans;
vector<int> direct_intra;
if(my_grp_id == dest_grp_id)
{
local_min = true;
direct_intra = get_intra_router(s, s->router_id, dest_router_id, num_routers);
num_min_chans = direct_intra.size();
}
else
{
num_min_chans = connectionList[my_grp_id][dest_grp_id].size();
}
int num_nonmin_chans_a = connectionList[my_grp_id][intm_grp_id_a].size();
int num_nonmin_chans_b = connectionList[my_grp_id][intm_grp_id_b].size();
int min_chan_a = -1, min_chan_b = -1, nonmin_chan_a = -1, nonmin_chan_b = -1;
......@@ -2699,29 +2715,43 @@ static int do_global_adaptive_routing( router_state * s,
int chana1 = 0;
assert(min_chan_a >= 0);
min_rtr_a = connectionList[my_grp_id][dest_grp_id][min_chan_a];
noIntraA = false;
if(min_rtr_a == s->router_id) {
noIntraA = true;
min_rtr_a = interGroupLinks[s->router_id][dest_grp_id][chana1].dest;
}
if(num_min_chans > 1) {
assert(min_chan_b >= 0);
noIntraB = false;
min_rtr_b = connectionList[my_grp_id][dest_grp_id][min_chan_b];
if(!local_min)
{
min_rtr_a = connectionList[my_grp_id][dest_grp_id][min_chan_a];
noIntraA = false;
if(min_rtr_a == s->router_id) {
noIntraA = true;
min_rtr_a = interGroupLinks[s->router_id][dest_grp_id][chana1].dest;
}
if(num_min_chans > 1) {
assert(min_chan_b >= 0);
noIntraB = false;
min_rtr_b = connectionList[my_grp_id][dest_grp_id][min_chan_b];
if(min_rtr_b == s->router_id) {
noIntraB = true;
min_rtr_b = interGroupLinks[s->router_id][dest_grp_id][chana1].dest;
if(min_rtr_b == s->router_id) {
noIntraB = true;
min_rtr_b = interGroupLinks[s->router_id][dest_grp_id][chana1].dest;
}
}
}
if(noIntraA) {
dest_rtr_as.push_back(min_rtr_a);
} else {
dest_rtr_as = get_intra_router(s, s->router_id, min_rtr_a, s->params->num_routers);
if(noIntraA) {
dest_rtr_as.push_back(min_rtr_a);
} else {
dest_rtr_as = get_intra_router(s, s->router_id, min_rtr_a, s->params->num_routers);
}
}
else
{
noIntraA = true;
noIntraB = true;
assert(direct_intra.size() > 0);
min_rtr_a = direct_intra[min_chan_a];
dest_rtr_as.push_back(min_rtr_a);
if(num_min_chans > 1)
min_rtr_b = direct_intra[min_chan_b];
}
int dest_rtr_b_sel;
int dest_rtr_a_sel = tw_rand_integer(lp->rng, 0, dest_rtr_as.size() - 1);
......@@ -2747,8 +2777,10 @@ static int do_global_adaptive_routing( router_state * s,
/* if a direct global channel exists for non-minimal route in the source group then give a priority to that. */
if(msg->my_l_hop == 1)
{
nonmin_chan_a = find_chan(s->router_id, intm_grp_id_a, s->params->num_routers);
nonmin_chan_b = find_chan(s->router_id, intm_grp_id_b, s->params->num_routers);
assert(routing == PROG_ADAPTIVE);
nonmin_chan_a = find_chan(s->router_id, intm_grp_id_a, num_routers);
nonmin_chan_b = find_chan(s->router_id, intm_grp_id_b, num_routers);
assert(nonmin_chan_a >= 0 && nonmin_chan_b >= 0);
}
/* two possible nonminimal routes */
int rand_a = tw_rand_integer(lp->rng, 0, num_nonmin_chans_a - 1);
......@@ -2756,6 +2788,7 @@ static int do_global_adaptive_routing( router_state * s,
noIntraA = false;
if(nonmin_chan_a != -1) {
/* TODO: For a 2-D dragonfly, this can be more than one link. */
bf->c25=1;
noIntraA = true;
nonmin_rtr_a = interGroupLinks[s->router_id][intm_grp_id_a][0].dest;
......@@ -3059,29 +3092,27 @@ router_packet_receive( router_state * s,
{
router_verify_valid_receipt(s, bf, msg, lp);
router_ecount++;
tw_stime ts;
int num_routers = s->params->num_routers;
int num_groups = s->params->num_groups;
int total_routers = s->params->total_routers;
int next_stop = -1, output_port = -1, output_chan = -1, adap_chan = -1;
int dest_router_id = codes_mapping_get_lp_relative_id(msg->dest_terminal_id, 0, 0) / s->params->num_cn;
int local_grp_id = s->router_id / s->params->num_routers;
int src_grp_id = msg->origin_router_id / s->params->num_routers;
int dest_grp_id = dest_router_id / s->params->num_routers;
int local_grp_id = s->router_id / num_routers;
int src_grp_id = msg->origin_router_id / num_routers;
int dest_grp_id = dest_router_id / num_routers;
int intm_router_id, intm_router_id_b;
short prev_path_type = 0, next_path_type = 0;
terminal_custom_message_list * cur_chunk = (terminal_custom_message_list*)calloc(1, sizeof(terminal_custom_message_list));
init_terminal_custom_message_list(cur_chunk, msg);
if(routing == MINIMAL ||
routing == NON_MINIMAL)
cur_chunk->msg.path_type = routing; /*defaults to the routing algorithm if we
don't have adaptive or progressive adaptive routing here*/
/* Set the default route as minimal for prog-adaptive */
if((routing == PROG_ADAPTIVE || routing == ADAPTIVE) && cur_chunk->msg.last_hop == TERMINAL)
if(cur_chunk->msg.last_hop == TERMINAL)
cur_chunk->msg.path_type = MINIMAL;
/* for prog-adaptive routing, record the current route of packet */
......@@ -3093,37 +3124,46 @@ router_packet_receive( router_state * s,
* intermediate router ID which is in the same group. */
if(src_grp_id != dest_grp_id)
{
if(cur_chunk->msg.my_l_hop >= 1)
if(routing == PROG_ADAPTIVE && cur_chunk->msg.my_l_hop >= 1)
{
bf->c3 = 1;
vector<int> direct_rtrs = get_indirect_conns(s, lp, dest_grp_id);
assert(direct_rtrs.size() > 0);
int indxa = tw_rand_integer(lp->rng, 0, direct_rtrs.size() - 1);
intm_router_id = direct_rtrs[indxa];
int indxb = tw_rand_integer(lp->rng, 0, direct_rtrs.size() - 1);
intm_router_id_b = direct_rtrs[indxb];
// printf("\n intm-router %d intm-router-b %d src-gid %d src-rtr %d", intm_router_id, intm_router_id_b, src_grp_id, s->router_id);
assert(intm_router_id / s->params->num_routers != local_grp_id);
assert(intm_router_id_b / s->params->num_routers != local_grp_id);
assert(intm_router_id / num_routers != local_grp_id);
assert(intm_router_id_b / num_routers != local_grp_id);
}
else
{
bf->c18 = 1;
intm_router_id = tw_rand_integer(lp->rng, 0, s->params->total_routers - 1);
intm_router_id_b = tw_rand_integer(lp->rng, 0, s->params->total_routers - 1);
if((intm_router_id/s->params->num_routers) == local_grp_id)
intm_router_id = (intm_router_id + s->params->num_routers) % s->params->num_groups;
intm_router_id = tw_rand_integer(lp->rng, 0, total_routers - 1);
intm_router_id_b = tw_rand_integer(lp->rng, 0, total_routers - 1);
if((intm_router_id/num_routers) == local_grp_id)
intm_router_id = (intm_router_id + num_routers) % total_routers;
if((intm_router_id_b/s->params->num_routers) == local_grp_id)
intm_router_id_b = (intm_router_id_b + s->params->num_routers) % s->params->num_groups;
if((intm_router_id_b/num_routers) == local_grp_id)
{
intm_router_id_b = (intm_router_id_b + num_routers) % total_routers;
}
assert(intm_router_id / num_routers != local_grp_id);
assert(intm_router_id_b / num_routers != local_grp_id);
}
}
else
{
bf->c15 = 1;
intm_router_id = (src_grp_id * s->params->num_routers) +
(((s->router_id % s->params->num_routers) +
tw_rand_integer(lp->rng, 1, s->params->num_routers - 1)) % s->params->num_routers);
intm_router_id = (src_grp_id * num_routers) +
(((s->router_id % num_routers) +
tw_rand_integer(lp->rng, 1, num_routers - 1)) % num_routers);
}
if(routing == NON_MINIMAL)
cur_chunk->msg.path_type = NON_MINIMAL;
/* progressive adaptive routing is only triggered when packet has to traverse a
* global channel. It doesn't make sense to use it within a group */
if(dest_grp_id != src_grp_id &&
......@@ -3131,7 +3171,8 @@ router_packet_receive( router_state * s,
&& routing == ADAPTIVE)
|| (cur_chunk->msg.path_type == MINIMAL
&& routing == PROG_ADAPTIVE
&& s->group_id == src_grp_id)))
&& s->router_id == dest_router_id)))
// && local_grp_id == src_grp_id)))
{
bf->c20 = 1;
adap_chan = do_global_adaptive_routing(s, lp, &(cur_chunk->msg), bf, dest_router_id, intm_router_id, intm_router_id_b);
......@@ -3139,6 +3180,7 @@ router_packet_receive( router_state * s,
/* If destination router is in the same group then local adaptive routing is
* triggered */
if(cur_chunk->msg.origin_router_id == dest_router_id)
cur_chunk->msg.path_type = MINIMAL;
......@@ -3148,17 +3190,8 @@ router_packet_receive( router_state * s,
&& cur_chunk->msg.last_hop == TERMINAL)
{
//if(DF_DALLY == 0)
//{
bf->c6 = 1;
do_local_adaptive_routing(s, lp, &(cur_chunk->msg), bf, dest_router_id, intm_router_id);
//}
//else if(DF_DALLY == 1)
//{
// cur_chunk->msg.path_type = MINIMAL;
//}
//else
// tw_error(TW_LOC, "\n topology type not set correctly! ");
}
next_path_type = cur_chunk->msg.path_type;
......
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