Merge commit 'd87691ec603db325d5b1c5db1186295a748df7cc' as 'subtree/rabit'

subtree/rabit/guide/broadcast.py

@@ -0,0 +1,22 @@
+#!/usr/bin/python
+"""
+demo python script of rabit
+"""
+import os
+import sys
+# add path to wrapper
+# for normal run without tracker script, add following line
+# sys.path.append(os.path.dirname(__file__) + '/../wrapper')
+import rabit
+
+rabit.init()
+n = 3
+rank = rabit.get_rank()
+s = None
+if rank == 0:
+    s = {'hello world':100, 2:3}
+print '@node[%d] before-broadcast: s=\"%s\"' % (rank, str(s))
+s = rabit.broadcast(s, 0)
+
+print '@node[%d] after-broadcast: s=\"%s\"' % (rank, str(s))
+rabit.finalize()