From eaa5ba0c96fccfa7240397274a4778ebf5e05c2b Mon Sep 17 00:00:00 2001
From: Matt Wala <wala1@illinois.edu>
Date: Tue, 12 Sep 2017 15:25:43 -0500
Subject: [PATCH] Fix cache collision warnings in test suite (closes #88).

---
 loopy/kernel/array.py | 1 +
 loopy/tools.py        | 7 ++++++-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/loopy/kernel/array.py b/loopy/kernel/array.py
index 1f10e01a7..5d4240b9a 100644
--- a/loopy/kernel/array.py
+++ b/loopy/kernel/array.py
@@ -887,6 +887,7 @@ class ArrayBase(ImmutableRecord):
         :class:`pytools.persistent_dict.PersistentDict`.
         """
 
+        key_builder.rec(key_hash, type(self).__name__.encode("utf-8"))
         key_builder.rec(key_hash, self.name)
         key_builder.rec(key_hash, self.dtype)
         self.update_persistent_hash_for_shape(key_hash, key_builder, self.shape)
diff --git a/loopy/tools.py b/loopy/tools.py
index 69a25b375..4acea7cff 100644
--- a/loopy/tools.py
+++ b/loopy/tools.py
@@ -51,7 +51,12 @@ class PersistentHashWalkMapper(LoopyWalkMapper, PersistentHashWalkMapperBase):
     See also :meth:`LoopyKeyBuilder.update_for_pymbolic_expression`.
     """
 
-    # <empty implementation>
+    def map_reduction(self, expr, *args):
+        if not self.visit(expr):
+            return
+
+        self.key_hash.update(type(expr.operation).__name__.encode("utf-8"))
+        self.rec(expr.expr, *args)
 
 
 class LoopyKeyBuilder(KeyBuilderBase):
-- 
GitLab