diff --git a/darkflow/net/build.py b/darkflow/net/build.py
index 1359f9f12..c78149cb6 100644
--- a/darkflow/net/build.py
+++ b/darkflow/net/build.py
@@ -141,6 +141,9 @@ def setup_meta_ops(self):
 		if self.FLAGS.summary:
 			self.summary_op = tf.summary.merge_all()
 			self.writer = tf.summary.FileWriter(self.FLAGS.summary + 'train')
+		if self.FLAGS.cpus:
+			cfg['inter_op_parallelism_threads'] = self.FLAGS.cpus
+			cfg['intra_op_parallelism_threads'] = self.FLAGS.cpus
 		
 		self.sess = tf.Session(config = tf.ConfigProto(**cfg))
 		self.sess.run(tf.global_variables_initializer())
@@ -174,4 +177,4 @@ def savepb(self):
 			json.dump(self.meta, fp)
 		self.say('Saving const graph def to {}'.format(name))
 		graph_def = tfnet_pb.sess.graph_def
-		tf.train.write_graph(graph_def,'./', name, False)
\ No newline at end of file
+		tf.train.write_graph(graph_def,'./', name, False)