Fix number of cores variable

Fixed variable name for the number of CPU cores.

common/bmk-driver.sh

@@ -332,9 +332,9 @@ fi
 
 # if a max number of cores is configured to be loaded then compute how many copies are needed
 # to fill exactly that number of cores. 
-if [ "$N_TOTAL_CORES" != "" ]; then  #i.e. if defined via USER_N_TOTAL_CORES or hardcoded default value
-  if [ $(($N_TOTAL_CORES%$NTHREADS)) -eq 0 ]; then
-    NCOPIES=$((N_TOTAL_CORES/NTHREADS)); 
+if [ "$USER_N_TOTAL_CORES" != "" ]; then  #i.e. if defined via USER_N_TOTAL_CORES or hardcoded default value
+  if [ $(($USER_N_TOTAL_CORES%$NTHREADS)) -eq 0 ]; then
+    NCOPIES=$((USER_N_TOTAL_CORES/NTHREADS)); 
   else
     echo -e "[$bmkDriver] ERROR! This run uses threads=$NTHREADS per copy and can not fill ncores=$N_TOTAL_CORES) cores with an integer number of copies. Please change accordingly the number of threads (-t | --threads) if -ncopies is used\n"
     exit 1