From 68c028b0a6039fe9504ab2c77ab4635e5241dc34 Mon Sep 17 00:00:00 2001
From: Azusa Yamaguchi <ayamaguc@staffmail.ed.ac.uk>
Date: Mon, 21 May 2018 12:54:25 +0100
Subject: [PATCH] Comment

---
 lib/algorithms/iterative/ConjugateGradientMultiShift.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/algorithms/iterative/ConjugateGradientMultiShift.h b/lib/algorithms/iterative/ConjugateGradientMultiShift.h
index 9d2719fc..4c311bc1 100644
--- a/lib/algorithms/iterative/ConjugateGradientMultiShift.h
+++ b/lib/algorithms/iterative/ConjugateGradientMultiShift.h
@@ -208,6 +208,7 @@ void operator() (LinearOperatorBase<Field> &Linop, const Field &src, std::vector
     cp=c;
     MatrixTimer.Start();  
     //Linop.HermOpAndNorm(p,mmp,d,qq); // d is used
+    // The below is faster on KNL
     Linop.HermOp(p,mmp); 
     d=real(innerProduct(p,mmp));