diff options
Diffstat (limited to 'common/router2.cc')
| -rw-r--r-- | common/router2.cc | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/common/router2.cc b/common/router2.cc index 15c97e52..d5a89f51 100644 --- a/common/router2.cc +++ b/common/router2.cc @@ -254,6 +254,8 @@ struct Router2 std::queue<int> backwards_queue; std::vector<int> dirty_wires; + + DeterministicRNG rng; }; enum ArcRouteResult @@ -628,7 +630,7 @@ struct Router2 next_score.togo_cost); #endif // Add wire to queue if it meets criteria - t.queue.push(QueuedWire(next_idx, dh, ctx->getPipLocation(dh), next_score, ctx->rng())); + t.queue.push(QueuedWire(next_idx, dh, ctx->getPipLocation(dh), next_score, t.rng.rng())); set_visited(t, next_idx, dh, next_score); if (next == dst_wire) { toexplore = std::min(toexplore, iter + 5); @@ -948,6 +950,7 @@ struct Router2 // Don't multithread if fewer than 200 nets (heuristic) if (route_queue.size() < 200) { ThreadContext st; + st.rng.rngseed(ctx->rng64()); for (size_t j = 0; j < route_queue.size(); j++) { route_net(st, nets_by_udata[route_queue[j]], false); } @@ -956,6 +959,9 @@ struct Router2 const int Nq = 4, Nv = 2, Nh = 2; const int N = Nq + Nv + Nh; std::vector<ThreadContext> tcs(N + 1); + for (auto &th : tcs) { + th.rng.rngseed(ctx->rng64()); + } for (auto n : route_queue) { auto &nd = nets.at(n); auto ni = nets_by_udata.at(n); |