From 1916c8d35aaafe3d3bcf5de994c87b5289471e3b Mon Sep 17 00:00:00 2001
From: Markus Blatt <markus@dr-blatt.de>
Date: Thu, 29 Oct 2015 15:50:22 +0100
Subject: [PATCH] Prevent copying the porevolume when checking for convergence.

As it is just used to compute the tempV value there is no need to
copy it to a new vector. With commit we use a reference to
geo.poreVolume() instead to prevent the copy.
---
 opm/autodiff/BlackoilModelBase_impl.hpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/opm/autodiff/BlackoilModelBase_impl.hpp b/opm/autodiff/BlackoilModelBase_impl.hpp
index ba47927dc..af3d85f3c 100644
--- a/opm/autodiff/BlackoilModelBase_impl.hpp
+++ b/opm/autodiff/BlackoilModelBase_impl.hpp
@@ -2445,7 +2445,7 @@ namespace detail {
         const int nm = asImpl().numMaterials();
         assert(int(rq_.size()) == nm);
 
-        const V pv = geo_.poreVolume();
+        const V& pv = geo_.poreVolume();
 
         std::vector<double> R_sum(nm);
         std::vector<double> B_avg(nm);
@@ -2564,7 +2564,7 @@ namespace detail {
         const int np = asImpl().numPhases();
         const int nm = asImpl().numMaterials();
 
-        const V pv = geo_.poreVolume();
+        const V& pv = geo_.poreVolume();
         std::vector<double> R_sum(nm);
         std::vector<double> B_avg(nm);
         std::vector<double> maxCoeff(nm);