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Merge pull request #402 from The-OpenROAD-Project-staging/sta_update_0729_fix 

Sta update 0729 fix
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Eder Monteiro 2026-08-13 16:13:46 -03:00 committed by GitHub
parent b6a817bab8 e8af2e8ad9
commit a89c2acc4e
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1 changed files with 7 additions and 0 deletions
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7
dcalc/PrimaDelayCalc.cc
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@ -590,6 +590,13 @@ PrimaDelayCalc::stampEqns()
C_.setZero(); C_.setZero();
B_.setZero(); B_.setZero();
// The stamps below do not visit the nodes in index order. Reserve room in
// each column so an out of order coeffRef() insert does not shift the packed
// array to make room, which makes stamping quadratic in the node count.
constexpr int non_zero_entry_count = 8;
G_.reserve(Eigen::VectorXi::Constant(order_, non_zero_entry_count));
C_.reserve(Eigen::VectorXi::Constant(order_, non_zero_entry_count));
NetSet drvr_nets(network_); NetSet drvr_nets(network_);
for (ArcDcalcArg &dcalc_arg : *dcalc_args_) { for (ArcDcalcArg &dcalc_arg : *dcalc_args_) {
const Net *net = dcalc_arg.drvrNet(network_); const Net *net = dcalc_arg.drvrNet(network_);