diff options
Diffstat (limited to 'common/placer1.cc')
-rw-r--r-- | common/placer1.cc | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/common/placer1.cc b/common/placer1.cc index 025c7c15..461fc4e8 100644 --- a/common/placer1.cc +++ b/common/placer1.cc @@ -151,6 +151,7 @@ class SAPlacer ctx->unlock(); int n_no_progress = 0; + wirelen_t min_metric = curr_metric; double avg_metric = curr_metric; temp = 10000; @@ -176,6 +177,11 @@ 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; @@ -230,6 +236,9 @@ class SAPlacer ctx->shuffle(autoplaced); assign_budget(ctx); } + else { + update_budget(ctx); + } // Recalculate total metric entirely to avoid rounding errors // accumulating over time @@ -378,8 +387,8 @@ 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; + //if (delta < 2) + // improved = true; } else { if (other != IdString()) ctx->unbindBel(oldBel); |