diff --git a/README.md b/README.md
index a9f8f46..9ab4556 100644
--- a/README.md
+++ b/README.md
@@ -107,8 +107,18 @@ make -j
 make eval
 ```
 
-*Note:* this will download, and filter, the entire OSM files for Spain and the
+*Notes:*
+ * this will download, and filter, the entire OSM files for Spain, the
 Stuttgart region. Make sure you have enough space left on your hard drive.
+ * in evaluation mode, pfaedle needs significantly more time, because the
+   calculation of the similarity measurements between shapes are expensive
+ * if you are only interested in the end results of a single dataset, run
+   `make <dataset>.lighteval` in `/eval`. For example, `make paris.lighteval`
+   generates a shaped version of the paris dataset, without doing extensive
+   comparisons to the ground truth.
+ * similarily, if you want to run the extensive evaluation for a single dataset,
+   run `make <dataset>.eval` in `/eval`.
+
 
 ## Evaluation requirements
 
diff --git a/eval/Makefile b/eval/Makefile
index 19b290c..6a4ebe0 100644
--- a/eval/Makefile
+++ b/eval/Makefile
@@ -29,10 +29,6 @@ osmconvert:
 	../build/pfaedle -x $< -i gtfs/$* -c eval.cfg --eval-path evalout/$*/hmm+osm -o gtfs/$*/shaped -D -m all --eval --eval-df-bins $(EVAL_DF_BINS) 2>&1 | tee $@
 	find evalout/$*/hmm+osm/ -name "*.json" -print0 | xargs -0 rm
 
-	mkdir -p evalout/$*/hmm
-	../build/pfaedle -x $< -i gtfs/$* -c eval-wo-osm.cfg --eval-path evalout/$*/hmm -o gtfs/$*/shaped -D -m all --eval --eval-df-bins $(EVAL_DF_BINS) 2>&1 | tee $@
-	find evalout/$*/hmm/ -name "*.json" -print0 | xargs -0 rm
-
 	mkdir -p evalout/$*/greedy
 	../build/pfaedle -x $< -i gtfs/$* -c eval.cfg --method greedy --eval-path evalout/$*/greedy -o gtfs/$*/shaped -D -m all --eval --eval-df-bins $(EVAL_DF_BINS) 2>&1 | tee $@
 	find evalout/$*/greedy/ -name "*.json" -print0 | xargs -0 rm
@@ -41,6 +37,10 @@ osmconvert:
 	../build/pfaedle -x $< -i gtfs/$* -c eval.cfg --method greedy2 --eval-path evalout/$*/greedy2 -o gtfs/$*/shaped -D -m all --eval --eval-df-bins $(EVAL_DF_BINS) 2>&1 | tee $@
 	find evalout/$*/greedy2/ -name "*.json" -print0 | xargs -0 rm
 
+	mkdir -p evalout/$*/hmm
+	../build/pfaedle -x $< -i gtfs/$* -c eval-wo-osm.cfg --eval-path evalout/$*/hmm -o gtfs/$*/shaped -D -m all --eval --eval-df-bins $(EVAL_DF_BINS) 2>&1 | tee $@
+	find evalout/$*/hmm/ -name "*.json" -print0 | xargs -0 rm
+
 osm/spain-latest.osm.pbf:
 	mkdir -p osm
 	wget http://download.geofabrik.de/europe/spain-latest.osm.pbf -O $@
diff --git a/src/util/Misc.h b/src/util/Misc.h
index eecde29..75cb6f9 100644
--- a/src/util/Misc.h
+++ b/src/util/Misc.h
@@ -11,6 +11,8 @@
 #define UNUSED(expr) do { (void)(expr); } while (0)
 #define TIME() std::chrono::high_resolution_clock::now()
 #define TOOK(t1, t2) (std::chrono::duration_cast<microseconds>(t2 - t1).count() / 1000.0)
+#define T_START(n)  auto _tstart_##n = std::chrono::high_resolution_clock::now()
+#define T_STOP(n) (std::chrono::duration_cast<microseconds>(std::chrono::high_resolution_clock::now() - _tstart_##n).count() / 1000.0)
 
 namespace util {
 
diff --git a/src/util/Nullable.h b/src/util/Nullable.h
index 892fd8c..e993aaa 100644
--- a/src/util/Nullable.h
+++ b/src/util/Nullable.h
@@ -2,6 +2,8 @@
 // Chair of Algorithms and Data Structures.
 // Authors: Patrick Brosi <brosi@informatik.uni-freiburg.de>
 
+#include <stdexcept>
+
 #ifndef UTIL_NULLABLE_H_
 #define UTIL_NULLABLE_H_