From 61b71dd01277dba352af5ac7519c596cd7b13bf1 Mon Sep 17 00:00:00 2001
From: Andreas Kloeckner <inform@tiker.net>
Date: Tue, 5 Jul 2016 12:34:16 +0100
Subject: [PATCH] Improve shape derivation error msg

---
 loopy/kernel/creation.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/loopy/kernel/creation.py b/loopy/kernel/creation.py
index e86439a8f..f4ac6562d 100644
--- a/loopy/kernel/creation.py
+++ b/loopy/kernel/creation.py
@@ -1262,6 +1262,9 @@ def guess_arg_shape_if_requested(kernel, default_order):
                                 "argument '%s', the following "
                                 "exception occurred:" % (i, arg.name),
                                 file=sys.stderr)
+                        print("*** ADVICE: You may need to manually specify the "
+                                "shape of argument '%s'." % (arg.name),
+                                file=sys.stderr)
                         raise
 
                 shape = tuple(shape)
-- 
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