gpu-limit.md

@@ -13,6 +13,7 @@ If you use TensorFlow 2.0 (or Keras with a TensorFlow backend), you can limit th
 ```python
 import tensorflow as tf
 
+megabytes = 2048
 gpus = tf.config.experimental.list_physical_devices('GPU')
 if gpus:
     for gpu in gpus: