From a75470f113ed8c00733deb65da68207f20cb2ff0 Mon Sep 17 00:00:00 2001
From: Dominic Kempf <dominic.kempf@iwr.uni-heidelberg.de>
Date: Mon, 25 Sep 2017 14:53:05 +0200
Subject: [PATCH] Add a padding heuristic
---
python/dune/perftool/sumfact/vectorization.py | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/python/dune/perftool/sumfact/vectorization.py b/python/dune/perftool/sumfact/vectorization.py
index 0b023aeb..303092f1 100644
--- a/python/dune/perftool/sumfact/vectorization.py
+++ b/python/dune/perftool/sumfact/vectorization.py
@@ -150,12 +150,13 @@ def greedy_vectorization_strategy(sumfacts, width):
sumfacts = set(sumfacts)
horizontal = width
vertical = 1
+ allowed_padding = 1
result = {}
while horizontal > 0:
if horizontal > 1:
- horizontal_kernels = horizontal_vectorization_strategy(sumfacts, horizontal, allow_padding=0)
+ horizontal_kernels = horizontal_vectorization_strategy(sumfacts, horizontal, allow_padding=allowed_padding)
else:
horizontal_kernels = {sf: sf for sf in sumfacts}
@@ -170,6 +171,8 @@ def greedy_vectorization_strategy(sumfacts, width):
horizontal = horizontal // 2
vertical = vertical * 2
+ # We heuristically allow padding only on the full SIMD width
+ allowed_padding = 0
return result
--
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