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Code Issues Releases Wiki Activity

Increase ripup penalties over time

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Signed-off-by: Clifford Wolf <clifford@clifford.at>
This commit is contained in:
Clifford Wolf
2018-06-14 15:45:47 +02:00
parent 312699e590
commit 66ced800d7
1 changed files with 8 additions and 2 deletions
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10
common/route.cc
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@@ -65,7 +65,7 @@ struct Router
bool routedOkay = false;
float maxDelay = 0.0;
Router(Design *design, IdString net_name, bool verbose, bool ripup,
Router(Design *design, IdString net_name, bool verbose, bool ripup = false,
float ripup_pip_penalty = 5.0, float ripup_wire_penalty = 5.0)
{
auto &chip = design->chip;
@@ -290,6 +290,8 @@ void route_design(Design *design, bool verbose)
{
auto &chip = design->chip;
float maxDelay = 0.0;
float ripup_pip_penalty = 5.0;
float ripup_wire_penalty = 5.0;
log_info("Routing..\n");
@@ -357,7 +359,8 @@ void route_design(Design *design, bool verbose)
int ripCnt = 0;
for (auto net_name : ripupQueue) {
Router router(design, net_name, verbose, true);
Router router(design, net_name, verbose, true,
ripup_pip_penalty, ripup_wire_penalty);
netCnt++;
visitCnt += router.visitCnt;
@@ -385,6 +388,9 @@ void route_design(Design *design, bool verbose)
log_info("ripped up %d previously routed nets. continue routing.\n",
int(netsQueue.size()));
ripup_pip_penalty *= 1.5;
ripup_wire_penalty *= 1.5;
}
}