From d08477cc5f152f9fe8e2d916a9548aac798b75c9 Mon Sep 17 00:00:00 2001
From: Axel Kohlmeyer <akohlmey@gmail.com>
Date: Wed, 24 Jul 2019 17:49:00 -0400
Subject: [PATCH] print warning, when explicitly specified communication cutoff
 is increased

---
 src/comm.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/comm.cpp b/src/comm.cpp
index 3b4029e7d3..4e605808af 100644
--- a/src/comm.cpp
+++ b/src/comm.cpp
@@ -617,6 +617,11 @@ double Comm::get_comm_cutoff()
   }
   maxcommcutoff = MAX(maxcommcutoff,neighbor->cutneighmax);
   maxcommcutoff = MAX(maxcommcutoff,cutghostuser);
+  if ((me == 0) && (cutghostuser > 0.0) && (maxcommcutoff > cutghostuser)) {
+    char mesg[128];
+    snprintf(mesg,128,"Communication cutoff is changed to %g",maxcommcutoff);
+    error->warning(FLERR,mesg);
+  }
 
   return maxcommcutoff;
 }