Merge pull request #6273 from nouiz/gh-6268_scan_profile

theano/scan_module/scan_op.py

@@ -2895,7 +2895,15 @@ def profile_printer(message, compile_time, fct_call_time,
         total_scan_fct_time = 0
         total_scan_op_time = 0
         for node, v in iteritems(apply_time):
-            if isinstance(node.op, Scan) and node.op.fn.profile:
+            if isinstance(node.op, Scan) and not node.op.fn.profile:
+                print(
+                    "  One scan node do not have its inner profile enabled. "
+                    "If you enable Theano profiler with "
+                    "'theano.function(..., profile=True)', you must manually"
+                    " enable the profiling for each scan too: "
+                    "'theano.scan_module.scan(...,profile=True)'."
+                    " Or use Theano flag 'profile=True'.", file=file)
+            elif isinstance(node.op, Scan) and node.op.fn.profile:
                 if v > 0:
                     scan_fct_time = node.op.fn.profile.call_time
                     scan_op_time = sum(node.op.fn.profile.apply_time.values())
@@ -2911,9 +2919,12 @@ def profile_printer(message, compile_time, fct_call_time,
                 else:
                     print((' The node took 0s, so we can not '
                            'compute the overhead'), node, file=file)
-        print('total %5.1fs  %5.1fs  %5.1fs  %5.1f%%  %5.1f%%' % (
-            total_super_scan_time,
-            total_scan_fct_time,
-            total_scan_op_time,
-            total_scan_fct_time / total_super_scan_time * 100,
-            total_scan_op_time / total_super_scan_time * 100), file=file)
+        if total_super_scan_time == 0:
+            print('  No scan have its inner profile enabled.', file=file)
+        else:
+            print('total %5.1fs  %5.1fs  %5.1fs  %5.1f%%  %5.1f%%' % (
+                total_super_scan_time,
+                total_scan_fct_time,
+                total_scan_op_time,
+                total_scan_fct_time / total_super_scan_time * 100,
+                total_scan_op_time / total_super_scan_time * 100), file=file)