diff --git a/test_tipc/benchmark_train.sh b/test_tipc/benchmark_train.sh
index ca85b909051e19c6405de356b326bfc462369612..1dcb0129e767e6c35adfad36aa5dce2fbd84a2fd 100644
--- a/test_tipc/benchmark_train.sh
+++ b/test_tipc/benchmark_train.sh
@@ -29,8 +29,6 @@ function set_dynamic_epoch(){
     arr=(${_str})
     M=${arr[0]}
     P=${arr[1]}
-    gn=`expr $P - 1`
-    gpu_num=`expr $gn / $M`
     ep=`expr $num \* $M \* $P`
     echo $ep
 }