Special treatment for the bank overlap metric.

Our C++ python interface expects a single return value from the python script
for each metric.

DRAMSys/analyzer/scripts/metrics.py

@@ -453,9 +453,22 @@ def calculateMetrics(pathToTrace):
 
     if (len(getThreads(connection)) == 1):
         for metric in metrics:
-            res = (metric.__name__.replace("_", " "), metric(connection))
+            mres = metric(connection)
+            mname = metric.__name__.replace("_", " ")
+            res = (mname, mres)
+
+            if (metric.__name__ == "bank_overlap_ratio"):
+                values = mres.split(",")
+                nbanks = 0
+                for v in values:
+                    name = mname + " (" + str(nbanks) + " banks active)"
+                    nbanks = nbanks + 1
+                    r = (name, float(v))
+                    calculatedMetrics.append(r)
+            else:
+                calculatedMetrics.append(res)
+
             print("{0}: {1}".format(res[0], res[1]))
-            calculatedMetrics.append(res)
 
     if (len(getThreads(connection)) > 1):
         # for thread in getThreads(connection):