diff --git a/compiler/base/hierarchy_layout.py b/compiler/base/hierarchy_layout.py
index 7c998176..26fc6de9 100644
--- a/compiler/base/hierarchy_layout.py
+++ b/compiler/base/hierarchy_layout.py
@@ -190,7 +190,8 @@ class layout():
                 debug.error("Should use a pin iterator since more than one pin {}".format(text),-1)
             # If we have one pin, return it and not the list.
             # Otherwise, should use get_pins()
-            return self.pin_map[text][0]
+            any_pin = next(iter(self.pin_map[text]))
+            return any_pin
         except Exception as e:
             #print e
             self.gds_write("missing_pin.gds")
@@ -205,7 +206,7 @@ class layout():
         if text in self.pin_map.keys():
             return self.pin_map[text]
         else:
-            return []
+            return set()
     
     def copy_layout_pin(self, instance, pin_name, new_name=""):
         """ 
@@ -260,7 +261,7 @@ class layout():
         """
         Delete a labeled pin (or all pins of the same name)
         """
-        self.pin_map[text]=[]
+        self.pin_map[text]=set()
         
     def add_layout_pin(self, text, layer, offset, width=None, height=None):
         """
@@ -277,13 +278,11 @@ class layout():
             # Check if there's a duplicate!
             # and if so, silently ignore it.
             # Rounding errors may result in some duplicates.
-            pin_list = self.pin_map[text]
-            for pin in pin_list:
-                if pin == new_pin:
-                    return pin
-            self.pin_map[text].append(new_pin)
+            if new_pin not in self.pin_map[text]:
+                self.pin_map[text].add(new_pin)
         except KeyError:
-            self.pin_map[text] = [new_pin]
+            self.pin_map[text] = set()
+            self.pin_map[text].add(new_pin)
 
         return new_pin
 
diff --git a/compiler/example_configs/giant_config_scn4m_subm.py b/compiler/example_configs/giant_config_scn4m_subm.py
new file mode 100644
index 00000000..74d52fe6
--- /dev/null
+++ b/compiler/example_configs/giant_config_scn4m_subm.py
@@ -0,0 +1,14 @@
+word_size = 64
+num_words = 1024
+
+tech_name = "scn4m_subm"
+process_corners = ["TT"]
+supply_voltages = [ 5.0 ]
+temperatures = [ 25 ]
+
+output_path = "temp"
+output_name = "sram_{0}_{1}_{2}".format(word_size,num_words,tech_name)
+
+drc_name = "magic"
+lvs_name = "netgen"
+pex_name = "magic"
diff --git a/compiler/run_profile.sh b/compiler/run_profile.sh
index 37a130a4..1234427d 100755
--- a/compiler/run_profile.sh
+++ b/compiler/run_profile.sh
@@ -1,3 +1,3 @@
 #!/bin/bash
-python3 -m cProfile -o profile.dat ./openram.py example_configs/medium_config_scn4m_subm.py -v | tee -i medium.log
+python3 -m cProfile -o profile.dat ./openram.py example_configs/giant_config_scn4m_subm.py -v | tee -i big.log
 echo "Run view_profile.py to view results"