diff --git a/.gitignore b/.gitignore
index e99a06009..3ba2ade24 100644
--- a/.gitignore
+++ b/.gitignore
@@ -18,3 +18,4 @@ CPackConfig.cmake
 CPackSourceConfig.cmake
 patches
 *.exe
+tutorials
diff --git a/performance/run_perf b/performance/run_perf
index c0c5d4bdb..4b6dc5a9d 100755
--- a/performance/run_perf
+++ b/performance/run_perf
@@ -13,9 +13,11 @@ else
   cp *.data perf.rc data
 fi
 
-#TASK=/usr/local/bin/tw244
-#TASK=/usr/local/bin/tw250b1
-TASK=../src/task
+# Allow override.
+if [[ -z $TASK ]]
+then
+  TASK=../src/task
+fi
 
 # Run benchmarks.
 # Note that commands are run twice - warm cache testing.