Merge pull request #1173 from niermann999/fix-finding-writer

fix: Number of truth particles in finding performance writer

Author: stephenswat

examples/run/cpu/truth_finding_example.cpp

@@ -149,6 +149,8 @@ int seq_run(const traccc::opts::track_finding& finding_opts,
             seeds.push_back(truth_track_candidates.tracks.at(i_trk).params());
         }
 
+        std::cout << "Number of seeds: " << seeds.size() << std::endl;
+
         // Read measurements
         traccc::measurement_collection_types::host measurements_per_event{
             &host_mr};

performance/src/efficiency/finding_performance_writer.cpp

@@ -241,9 +241,16 @@ void finding_performance_writer::write_common(
 
     // For each truth particle...
     for (auto const& [pid, ptc] : evt_data.m_particle_map) {
-        std::size_t num_measurements = 0;
+
+        auto ptc_particle =
+            detail::particle_from_pdg_number<scalar>(ptc.particle_type);
+        if (ptc_particle.pdg_num() == 0) {
+            // TODO: Add some debug logging here.
+            continue;
+        }
 
         // Find the number of measurements belonging to this track
+        std::size_t num_measurements = 0;
         if (auto it = evt_data.m_ptc_to_meas_map.find(ptc);
             it != evt_data.m_ptc_to_meas_map.end()) {
             num_measurements = it->second.size();
@@ -273,6 +280,8 @@ void finding_performance_writer::write_common(
             total_matched_truth_particles++;
             n_matched_seeds_for_particle = it->second;
             total_duplicate_tracks += n_matched_seeds_for_particle - 1;
+        } else {
+            TRACCC_DEBUG("Not matched: " << pid);
         }
 
         // Finds how many (fake) tracks were made with at least one hit from the