Merge pull request #490 from datacratic/sge_get_loads_fix

Squashed commit of the following:

commit d022228
Author: Mich <fmlheureux@datacratic.com>
Date:   Fri Jan 30 10:40:15 2015 -0500

    Removed duplicate part

commit f488c50
Author: Mich <fmlheureux@datacratic.com>
Date:   Fri Jan 30 10:34:42 2015 -0500

    Converts no load to 0 on get_loads

commit d69ccd0
Author: Mich <fmlheureux@datacratic.com>
Date:   Fri Jan 30 10:23:52 2015 -0500

    Added comment about the load_avg operation

commit 81e544c
Author: Mich <fmlheureux@datacratic.com>
Date:   Fri Jan 30 10:23:12 2015 -0500

    try/except instead of isinstance for load avg check

commit de3f313
Author: Mich <fmlheureux@datacratic.com>
Date:   Thu Jan 29 15:19:39 2015 -0500

    Fix a crash that occurs when nodes load factor exceeds 999

closes #490

starcluster/balancers/sge/__init__.py

@@ -311,9 +311,16 @@ def get_loads(self):
         """
         loads = []
         for h in self.hosts:
-            if h['load_avg'] == '-':
-                h['load_avg'] = 0
-            loads.append(h['load_avg'])
+            load_avg = h['load_avg']
+            try:
+                if load_avg == "-":
+                    load_avg = 0
+                elif load_avg[-1] == 'K':
+                    load_avg = float(load_avg[:-1]) * 1000
+            except TypeError:
+                # load_avg was already a number
+                pass
+            loads.append(load_avg)
         return loads
 
     def _add(self, x, y):