1 files changed, 9 insertions, 2 deletions
diff --git a/common/placer1.cc b/common/placer1.cc
index 4659da11..264f1eba 100644
--- a/common/placer1.cc
+++ b/common/placer1.cc
@@ -155,6 +155,7 @@ class SAPlacer
         ctx->unlock();
 
         int n_no_progress = 0;
+        wirelen_t min_metric = curr_metric;
         double avg_metric = curr_metric;
         temp = 10000;
 
@@ -180,6 +181,11 @@ class SAPlacer
                 }
             }
 
+            if (curr_metric < min_metric) {
+                min_metric = curr_metric;
+                improved = true;
+            }
+
             // Heuristic to improve placement on the 8k
             if (improved)
                 n_no_progress = 0;
@@ -233,6 +239,8 @@ class SAPlacer
                 diameter *= post_legalise_dia_scale;
                 ctx->shuffle(autoplaced);
                 assign_budget(ctx);
+            } else {
+                update_budget(ctx);
             }
 
             // Recalculate total metric entirely to avoid rounding errors
@@ -267,6 +275,7 @@ class SAPlacer
                 }
             }
         }
+        compute_fmax(ctx, true /* print_fmax */);
         ctx->unlock();
         return true;
     }
@@ -382,8 +391,6 @@ class SAPlacer
         // SA acceptance criterea
         if (delta < 0 || (temp > 1e-6 && (ctx->rng() / float(0x3fffffff)) <= std::exp(-delta / temp))) {
             n_accept++;
-            if (delta < 2)
-                improved = true;
         } else {
             if (other != IdString())
                 ctx->unbindBel(oldBel);