Keras progress bar with millisecond precision by default (for both epoch and step time).

keras_ms_progbar.patch

diff --git a/keras/utils/generic_utils.py b/keras/utils/generic_utils.py
index 6a97448..d1db340 100644
--- a/keras/utils/generic_utils.py
+++ b/keras/utils/generic_utils.py
@@ -292,7 +292,7 @@ class Progbar(object):
         self.seen_so_far = current
 
         now = time.time()
-        info = ' - %.0fs' % (now - self.start)
+        info = ' - %.0f ms' % (1e3 * (now - self.start))
         if self.verbose == 1:
             if (not force and (now - self.last_update) < self.interval and
                     current < self.target):
@@ -340,12 +340,13 @@ class Progbar(object):
 
                 info = ' - ETA: %s' % eta_format
             else:
-                if time_per_unit >= 1:
-                    info += ' %.0fs/step' % time_per_unit
-                elif time_per_unit >= 1e-3:
-                    info += ' %.0fms/step' % (time_per_unit * 1e3)
+                #if time_per_unit >= 1:
+                #    info += ' %.0fs/step' % time_per_unit
+                #elif time_per_unit >= 1e-3:
+                if time_per_unit >= 1e-3:
+                    info += ' %.0f ms/step' % (time_per_unit * 1e3)
                 else:
-                    info += ' %.0fus/step' % (time_per_unit * 1e6)
+                    info += ' %.0f us/step' % (time_per_unit * 1e6)
 
             for k in self.unique_values:
                 info += ' - %s:' % k