fix one benchmark bug

Author: baotonglu

output

@@ -0,0 +1,106 @@
+Begin: 10000000  24
+--cpunodebind=0 --membind=0
+Distribution = uniform
+EPOCH registration in application level
+Variable-length key = 16
+Initialize Dash-EH
+end up the initialization
+Generate workload
+Genereate workload for variable length key 
+Finish Generation
+Finish Generate workload
+load num = 10000000
+Start load warm-up workload
+Finish loading 10000000 keys
+Comprehensive Benchmark
+insertion start
+Insert24 Begin
+24 threads, Time = 1.675795 s, throughput = 59673170.047649 ops/s, fastest = 61734187.405238, slowest = 58087998.670947
+Insert24 End
+The size of the bucket is 256
+seg_count = 150583
+verify_seg_count = 150583
+Pos_search24 Begin
+not_found = 0
+not_found = 0
+not_found = 0
+not_found = 0
+not_found = 0
+not_found = 0
+not_found = 0
+not_found = 0
+not_found = 0
+not_found = 0
+not_found = 0
+not_found = 0
+not_found = 0
+not_found = 0
+not_found = 0
+not_found = 0
+not_found = 0
+not_found = 0
+not_found = 0
+not_found = 0
+not_found = 0
+not_found = 0
+not_found = 0
+not_found = 0
+24 threads, Time = 0.876721 s, throughput = 114061350.178420 ops/s, fastest = 119667324.836953, slowest = 100589049.473718
+Pos_search24 End
+Neg_search24 Begin
+not_found = 4166666
+not_found = 4166666
+not_found = 4166666
+not_found = 4166666
+not_found = 4166666
+not_found = 4166666
+not_found = 4166666
+not_found = 4166666
+not_found = 4166666
+not_found = 4166666
+not_found = 4166666
+not_found = 4166666
+not_found = 4166666
+not_found = 4166666
+not_found = 4166666
+not_found = 4166666
+not_found = 4166666
+not_found = 4166666
+not_found = 4166682
+not_found = 4166666
+not_found = 4166666
+not_found = 4166666
+not_found = 4166666
+not_found = 4166666
+24 threads, Time = 0.579848 s, throughput = 172458927.289663 ops/s, fastest = 174457350.411545, slowest = 169828303.585075
+Neg_search24 End
+Delete24 Begin
+not_found = 0
+not_found = 0
+not_found = 0
+not_found = 0
+not_found = 0
+not_found = 0
+not_found = 0
+not_found = 0
+not_found = 0
+not_found = 0
+not_found = 0
+not_found = 0
+not_found = 0
+not_found = 0
+not_found = 0
+not_found = 0
+not_found = 0
+not_found = 0
+not_found = 0
+not_found = 0
+not_found = 0
+not_found = 0
+not_found = 0
+not_found = 0
+24 threads, Time = 1.063495 s, throughput = 94029594.796308 ops/s, fastest = 95319525.346892, slowest = 91974236.176962
+Delete24 End
+The size of the bucket is 256
+seg_count = 150583
+verify_seg_count = 150583

result.txt

@@ -0,0 +1,10 @@
+Begin: 100000000 50000000 9
+--cpunodebind=0 --membind=0
+Distribution = uniform
+EPOCH registration in application level
+Variable-length key = 16
+Initialize Dash-EH
+creating a new pool
+pool opened at: 0x5f0000000000
+Generate workload
+Genereate workload for variable length key 

run.sh

@@ -16,13 +16,13 @@ epoch=(0 1 1 1 0)
 # k specify the testing index, 1 = dash-ex, 2 = dash-lh, 3 = cceh, 4 = level
 # i specify the key type, 1 means fixed-length key, 2 means variable-length key
 # j spec1fy the number of threads, 1 means one threads, 2 means two threads, 3 means four threads...
-for k in 2
+for k in 1
 do
-	for i in 1 2
+	for i in 1
 	do
 		for j in 1
 		do
-			echo "Begin: ${base[1]} ${workload[${i}]} ${thread_num[${j}]}"
+			echo "Begin: ${base[1]} ${workload[1]} ${thread_num[${j}]}"
 			numaarg=""
 			if [ ${thread_num[$j]} -le 24 ]
 			then

src/test_pmem.cpp

@@ -1123,6 +1123,9 @@ void Run() {
     }
 
     index->getNumber();
+    for (int i = 0; i < thread_num; ++i) {
+      rarray[i].workload = not_used_workload;
+    }
 
     if (open_epoch == true) {
       GeneralBench<T>(rarray, index, thread_num, operation_num, "Pos_search",