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author | gatecat <gatecat@ds0.me> | 2021-05-20 14:54:23 +0100 |
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committer | gatecat <gatecat@ds0.me> | 2021-05-20 14:54:23 +0100 |
commit | 1595c0726079e62313e0df82bdb31120b72bdc39 (patch) | |
tree | 0b8e243e8b72785bde9c4d1b3758aa5658ffa465 /common | |
parent | 5a41d2070c8a7c065d4e3fbfb70b3a3fbd19b319 (diff) | |
download | nextpnr-1595c0726079e62313e0df82bdb31120b72bdc39.tar.gz nextpnr-1595c0726079e62313e0df82bdb31120b72bdc39.tar.bz2 nextpnr-1595c0726079e62313e0df82bdb31120b72bdc39.zip |
router2: Add heatmap by routing resource type
Signed-off-by: gatecat <gatecat@ds0.me>
Diffstat (limited to 'common')
-rw-r--r-- | common/command.cc | 5 | ||||
-rw-r--r-- | common/router2.cc | 43 | ||||
-rw-r--r-- | common/router2.h | 4 |
3 files changed, 49 insertions, 3 deletions
diff --git a/common/command.cc b/common/command.cc index 5f19e01b..f48d6adf 100644 --- a/common/command.cc +++ b/common/command.cc @@ -170,6 +170,9 @@ po::options_description CommandHandler::getGeneralOptions() "placer heap criticality exponent (int, default: 2)"); general.add_options()("placer-heap-timingweight", po::value<int>(), "placer heap timing weight (int, default: 10)"); + general.add_options()("router2-heatmap", po::value<std::string>(), + "prefix for router2 resource congestion heatmaps"); + general.add_options()("placed-svg", po::value<std::string>(), "write render of placement to SVG file"); general.add_options()("routed-svg", po::value<std::string>(), "write render of routing to SVG file"); @@ -278,6 +281,8 @@ void CommandHandler::setupContext(Context *ctx) if (vm.count("placer-heap-timingweight")) ctx->settings[ctx->id("placerHeap/timingWeight")] = std::to_string(vm["placer-heap-timingweight"].as<int>()); + if (vm.count("router2-heatmap")) + ctx->settings[ctx->id("router2/heatmap")] = vm["router2-heatmap"].as<std::string>(); // Setting default values if (ctx->settings.find(ctx->id("target_freq")) == ctx->settings.end()) diff --git a/common/router2.cc b/common/router2.cc index 19fb5574..2156ce28 100644 --- a/common/router2.cc +++ b/common/router2.cc @@ -1043,7 +1043,7 @@ struct Router2 return success; } - void write_heatmap(std::ostream &out, bool congestion = false) + void write_xy_heatmap(std::ostream &out, bool congestion = false) { std::vector<std::vector<int>> hm_xy; int max_x = 0, max_y = 0; @@ -1080,6 +1080,33 @@ struct Router2 out << std::endl; } } + + void write_wiretype_heatmap(std::ostream &out) + { + std::unordered_map<IdString, std::vector<int>> cong_by_type; + size_t max_cong = 0; + // Build histogram + for (auto &wd : flat_wires) { + size_t val = wd.bound_nets.size(); + IdString type = ctx->getWireType(wd.w); + max_cong = std::max(max_cong, val); + if (cong_by_type[type].size() <= max_cong) + cong_by_type[type].resize(max_cong + 1); + cong_by_type[type].at(val) += 1; + } + // Write csv + out << "type,"; + for (size_t i = 0; i <= max_cong; i++) + out << "bound=" << i << ","; + out << std::endl; + for (auto &ty : sorted_ref(cong_by_type)) { + out << ctx->nameOf(ty.first) << ","; + for (int count : ty.second) + out << count << ","; + out << std::endl; + } + } + int mid_x = 0, mid_y = 0; void partition_nets() @@ -1332,9 +1359,17 @@ struct Router2 #if 0 if (iter == 1 && ctx->debug) { std::ofstream cong_map("cong_map_0.csv"); - write_heatmap(cong_map, true); + write_xy_heatmap(cong_map, true); } #endif + if (!cfg.heatmap.empty()) { + std::string filename(cfg.heatmap + "_" + std::to_string(iter) + ".csv"); + std::ofstream cong_map(filename); + if (!cong_map) + log_error("Failed to open wiretype heatmap %s for writing.\n", filename.c_str()); + write_wiretype_heatmap(cong_map); + log_info(" wrote wiretype heatmap to %s.\n", filename.c_str()); + } dump_statistics(); if (overused_wires == 0) { @@ -1394,6 +1429,10 @@ Router2Cfg::Router2Cfg(Context *ctx) curr_cong_mult = ctx->setting<float>("router2/currCongWeightMult", 2.0f); estimate_weight = ctx->setting<float>("router2/estimateWeight", 1.75f); perf_profile = ctx->setting<bool>("router2/perfProfile", false); + if (ctx->settings.count(ctx->id("router2/heatmap"))) + heatmap = ctx->settings.at(ctx->id("router2/heatmap")).as_string(); + else + heatmap = ""; } NEXTPNR_NAMESPACE_END diff --git a/common/router2.h b/common/router2.h index fb11f92d..b12e62c6 100644 --- a/common/router2.h +++ b/common/router2.h @@ -49,8 +49,10 @@ struct Router2Cfg // Print additional performance profiling information bool perf_profile = false; + + std::string heatmap; }; void router2(Context *ctx, const Router2Cfg &cfg); -NEXTPNR_NAMESPACE_END
\ No newline at end of file +NEXTPNR_NAMESPACE_END |