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| author | David Shah <dave@ds0.me> | 2020-01-14 13:35:18 +0000 |
|---|---|---|
| committer | David Shah <dave@ds0.me> | 2020-02-03 11:38:31 +0000 |
| commit | 7ac43e5f0039a07dd95c7377426d926e6705790a (patch) | |
| tree | 55b314eb5223139eba7b7fc888d708833254636d /common | |
| parent | 72367e6cfd3f36768288d6a5b03e670351ea8f8c (diff) | |
| download | nextpnr-7ac43e5f0039a07dd95c7377426d926e6705790a.tar.gz nextpnr-7ac43e5f0039a07dd95c7377426d926e6705790a.tar.bz2 nextpnr-7ac43e5f0039a07dd95c7377426d926e6705790a.zip | |
router2: Profile nets by route time
Signed-off-by: David Shah <dave@ds0.me>
Diffstat (limited to 'common')
| -rw-r--r-- | common/router2.cc | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/common/router2.cc b/common/router2.cc index 88e9746e..d190904f 100644 --- a/common/router2.cc +++ b/common/router2.cc @@ -39,6 +39,8 @@ NEXTPNR_NAMESPACE_BEGIN +#define RUNTIME_PROFILE + namespace { struct Router2 { @@ -59,6 +61,7 @@ struct Router2 ArcBounds bb; // Coordinates of the center of the net, used for the weight-to-average int cx, cy, hpwl; + int total_route_us = 0; }; struct PerWireData @@ -627,6 +630,10 @@ struct Router2 ROUTE_LOG_DBG("Routing net '%s'...\n", ctx->nameOf(net)); +#ifdef RUNTIME_PROFILE + auto rstart = std::chrono::high_resolution_clock::now(); +#endif + // Nothing to do if net is undriven if (net->driver.cell == nullptr) return true; @@ -669,6 +676,11 @@ struct Router2 } } } +#ifdef RUNTIME_PROFILE + auto rend = std::chrono::high_resolution_clock::now(); + nets.at(net->udata).total_route_us += + (std::chrono::duration_cast<std::chrono::microseconds>(rend - rstart).count()); +#endif return !have_failures; } #undef ROUTE_LOG_DBG @@ -977,6 +989,18 @@ struct Router2 ++iter; curr_cong_weight *= 2; } while (!failed_nets.empty()); +#ifdef RUNTIME_PROFILE + std::vector<std::pair<int, IdString>> nets_by_runtime; + for (auto &n : nets_by_udata) { + nets_by_runtime.emplace_back(nets.at(n->udata).total_route_us, n->name); + } + std::sort(nets_by_runtime.begin(), nets_by_runtime.end(), std::greater<std::pair<int, IdString>>()); + log_info("1000 slowest nets by runtime:\n"); + for (int i = 0; i < std::min(int(nets_by_runtime.size()), 1000); i++) { + log(" %80s %6d %.1fms\n", nets_by_runtime.at(i).second.c_str(ctx), + int(ctx->nets.at(nets_by_runtime.at(i).second)->users.size()), nets_by_runtime.at(i).first / 1000.0); + } +#endif } }; } // namespace |