1 files changed, 14 insertions, 0 deletions
diff --git a/src/mem/ruby/system/System.hh b/src/mem/ruby/system/System.hh
index 8cbeb2b0e..dbf4dbc78 100644
--- a/src/mem/ruby/system/System.hh
+++ b/src/mem/ruby/system/System.hh
@@ -61,6 +61,20 @@ class DirectoryMemory;
 class Topology;
 class MemoryControl;
 
+/*
+ * This defines the number of longs (32-bits on 32 bit machines,
+ * 64-bit on 64-bit AMD machines) to use to hold the set...
+ * the default is 4, allowing 128 or 256 different members
+ * of the set.
+ *
+ * This should never need to be changed for correctness reasons,
+ * though increasing it will increase performance for larger
+ * set sizes at the cost of a (much) larger memory footprint
+ *
+ */
+const int NUMBER_WORDS_PER_SET = 4;
+
+
 struct RubyObjConf {
   string type;
   string name;