start measuring the placement time from the moment the Placer object is constructed

Author: soheilshahrouz

vpr/src/place/compressed_grid.cpp

@@ -1,6 +1,9 @@
+
 #include "compressed_grid.h"
+
 #include "arch_util.h"
 #include "globals.h"
+#include "vtr_time.h"
 
 /**
  * @brief Creates a compressed grid from the given locations.
@@ -16,6 +19,12 @@ static t_compressed_block_grid create_compressed_block_grid(const std::vector<st
 
 
 std::vector<t_compressed_block_grid> create_compressed_block_grids() {
+    /* Measure how long it takes to allocate and initialize compressed grid.
+     * The measured execution time is printed when this object goes out of scope
+     * at the end of this function.
+     */
+    vtr::ScopedStartFinishTimer compressed_grid_timer("Compressed grid construction");
+
     auto& device_ctx = g_vpr_ctx.device();
     auto& grid = device_ctx.grid;
     const int num_layers = grid.get_num_layers();

vpr/src/place/place.cpp

@@ -93,6 +93,11 @@ void try_place(const Netlist<>& net_list,
     place_ctx.lock_loc_vars();
     place_ctx.compressed_block_grids = create_compressed_block_grids();
 
+    /* Start measuring placement time. The measured execution time will be printed
+     * when this object goes out of scope at the end of this function.
+     */
+    vtr::ScopedStartFinishTimer placement_timer("Placement");
+
     Placer placer(net_list, placer_opts, analysis_opts, noc_opts, directs, place_delay_model, cube_bb, is_flat, /*quiet=*/false);
 
     placer.place();

vpr/src/place/placer.cpp

@@ -39,8 +39,7 @@ Placer::Placer(const Netlist<>& net_list,
     const auto& device_ctx = g_vpr_ctx.device();
     const auto& atom_ctx = g_vpr_ctx.atom();
 
-    const auto& timing_ctx = g_vpr_ctx.timing();
-    pre_place_timing_stats_ = timing_ctx.stats;
+    pre_place_timing_stats_ = g_vpr_ctx.timing().stats;
 
     init_placement_context(placer_state_.mutable_blk_loc_registry(), directs);
 
@@ -49,10 +48,6 @@ Placer::Placer(const Netlist<>& net_list,
         noc_cost_handler_.emplace(placer_state_.block_locs());
     }
 
-    // Start measuring placement time
-    timer_ = std::make_unique<vtr::ScopedStartFinishTimer>("Placement");
-    timer_->quiet(quiet);
-
     /* To make sure the importance of NoC-related cost terms compared to
      * BB and timing cost is determine only through NoC placement weighting factor,
      * we normalize NoC-related cost weighting factors so that they add up to 1.

vpr/src/place/placer.h

@@ -96,8 +96,6 @@ class Placer {
     /// Stores information about the critical path. This is usually updated after that timing info is updated.
     tatum::TimingPathInfo critical_path_;
 
-    std::unique_ptr<vtr::ScopedStartFinishTimer> timer_;
-
     IntraLbPbPinLookup pb_gpin_lookup_;
     ClusteredPinAtomPinsLookup netlist_pin_lookup_;