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| author | David Shah <davey1576@gmail.com> | 2018-12-07 21:23:34 +0000 |
|---|---|---|
| committer | David Shah <dave@ds0.me> | 2019-03-22 10:31:28 +0000 |
| commit | a218c27305c9be824531195d99d68c6f86782830 (patch) | |
| tree | 93426be27ef487eadfc4a760cfcda12245df92e6 /common/placer1.cc | |
| parent | 3938ea41fc00afc441c411c3de0403d4652d08c4 (diff) | |
| download | nextpnr-a218c27305c9be824531195d99d68c6f86782830.tar.gz nextpnr-a218c27305c9be824531195d99d68c6f86782830.tar.bz2 nextpnr-a218c27305c9be824531195d99d68c6f86782830.zip | |
placer1: Tuning
Signed-off-by: David Shah <davey1576@gmail.com>
Diffstat (limited to 'common/placer1.cc')
| -rw-r--r-- | common/placer1.cc | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/common/placer1.cc b/common/placer1.cc index fe56b4af..f78bf16c 100644 --- a/common/placer1.cc +++ b/common/placer1.cc @@ -206,8 +206,8 @@ class SAPlacer if (iter % 5 == 0 || iter == 1) log_info(" at iteration #%d: temp = %f, timing cost = " - "%.0f, wirelen = %.0f est tns = %.02fns\n", - iter, temp, double(curr_timing_cost), double(curr_wirelen_cost), curr_tns); + "%.0f, wirelen = %.0f\n", + iter, temp, double(curr_timing_cost), double(curr_wirelen_cost)); for (int m = 0; m < 15; ++m) { // Loop through all automatically placed cells @@ -234,8 +234,8 @@ class SAPlacer if (temp <= 1e-3 && n_no_progress >= 5) { log_info(" at iteration #%d: temp = %f, timing cost = " - "%.0f, wirelen = %.0f est tns = %.02fns\n", - iter, temp, double(curr_timing_cost), double(curr_wirelen_cost), curr_tns); + "%.0f, wirelen = %.0f \n", + iter, temp, double(curr_timing_cost), double(curr_wirelen_cost)); break; } @@ -434,7 +434,7 @@ class SAPlacer delta += (cfg.constraintWeight / temp) * (new_dist - old_dist) / last_wirelen_cost; n_move++; // SA acceptance criterea - if (delta < 0 || (temp > 1e-6 && (ctx->rng() / float(0x0fffffff)) <= std::exp(-delta / temp))) { + if (delta < 0 || (temp > 1e-6 && (ctx->rng() / float(0x0fffffff)) <= std::exp(-100*delta / temp))) { n_accept++; } else { if (other_cell != nullptr) @@ -670,7 +670,6 @@ class SAPlacer NetCriticalityMap net_crit; Context *ctx; - float curr_tns = 0; float temp = 1000; float crit_exp = 8; float lambda = 0.5; |