sanitize core count variable

templates/memtest.script.epp

@@ -38,10 +38,7 @@ verbose () {
   fi
 }
 
-# Look up expected performance value for current node
-found=-1
-core_count=1
-
+# Read memtest_table for the appropriate performance values and core counts (if defined)
 while read -r host threshold cores
 do
   if [[ "$HOSTNAME" =~ $host ]]
@@ -54,13 +51,19 @@ do
 done < $performance_table
 
 # Exit if hostname cannot be matched in the lookup table
-if (( $found < 0 ))
+if [[ -z "$found" ]]
 then
   logger "STREAM: no match for $HOSTNAME in the performance table"
   verbose "Error: no match for $HOSTNAME in the performance table"
   exit 1
 fi
 
+# Set core_count to 1 if not otherwise specified
+if [[ -z "$core_count" ]]
+then
+  core_count=1
+fi
+
 # Grab Triad stream rate from STREAM. Loop through all cores
 for ((i=0; i<core_count; i++))
 do