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bug fixing in assign ipins to tracks using Fc_in

This commit is contained in:
tangxifan 2019-07-05 13:42:22 -06:00
parent 64d8e9663a
commit c62762ce59
1 changed files with 9 additions and 12 deletions
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21
vpr7_x2p/vpr/SRC/device/rr_graph/tileable_rr_graph_gsb.cpp
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@ -1064,17 +1064,14 @@ void build_gsb_one_ipin_track2pin_map(const t_rr_graph* rr_graph,
/* Scale Fc */
int actual_Fc = std::ceil((float)Fc * (float)actual_track_list.size() / (float)chan_width);
/* Minimum Fc should be 2 : ensure we will connect to a pair of routing tracks */
actual_Fc = std::max(2, actual_Fc);
actual_Fc = std::max(1, actual_Fc);
/* Compute the step between two connection from this IPIN to tracks:
* step = W' / Fc', W' and Fc' are the adapted W and Fc from actual_track_list and Fc_in
* For uni-directional arch, all the tracks are in pair, we will divide by 2 to be normalized (Fc counts pairs)
*/
size_t track_step = std::ceil((float)actual_track_list.size() / (float)actual_Fc);
/* Track step mush be a multiple of 2!!!*/
if (0 != track_step % 2) {
track_step--; /* minus 1 to increase connectivity */
}
size_t track_step = std::ceil((float)(actual_track_list.size() / 2) / (float)actual_Fc);
/* Make sure step should be at least 2 */
track_step = std::max(2, (int)track_step);
track_step = std::max(1, (int)track_step);
/* Adapt offset to the range of actual_track_list */
size_t actual_offset = offset % actual_track_list.size();
/* rotate the track list by an offset */
@ -1109,12 +1106,12 @@ void build_gsb_one_ipin_track2pin_map(const t_rr_graph* rr_graph,
/* Ensure the number of tracks is similar to Fc */
//printf("Fc_in=%d, track_cnt=%d\n", actual_Fc, track_cnt);
assert (actual_Fc <= track_cnt);
assert (2 * actual_Fc <= track_cnt);
/* Give a warning if Fc is < track_cnt */
if (actual_Fc < track_cnt) {
if (2 * actual_Fc < track_cnt) {
vpr_printf(TIO_MESSAGE_INFO,
"Node(%lu) will have a higher Fc(=%lu) than specified(=%lu)!\nThis is due to that the number of tracks is much larger than IPINs!\n",
ipin_node - rr_graph->rr_node, track_cnt, actual_Fc);
"IPIN Node(%lu) will have a higher Fc(=%lu) than specified(=%lu)!\nThis is due to that the number of tracks is much larger than IPINs!\n",
ipin_node - rr_graph->rr_node, track_cnt, 2 * actual_Fc);
}
}
@ -1214,7 +1211,7 @@ void build_gsb_one_opin_pin2track_map(const t_rr_graph* rr_graph,
/* Give a warning if Fc is < track_cnt */
if (actual_Fc < track_cnt) {
vpr_printf(TIO_MESSAGE_INFO,
"Node(%lu) will have a higher Fc(=%lu) than specified(=%lu)!\nThis is due to that the number of tracks is much larger than OPINs!\n",
"OPIN Node(%lu) will have a higher Fc(=%lu) than specified(=%lu)!\nThis is due to that the number of tracks is much larger than OPINs!\n",
opin_node_id, track_cnt, actual_Fc);
}
}