diff --git a/scripts/delete_old_files_in_buffer.sh b/scripts/delete_old_files_in_buffer.sh
index 1d0db5a..ddcfed1 100755
--- a/scripts/delete_old_files_in_buffer.sh
+++ b/scripts/delete_old_files_in_buffer.sh
@@ -26,5 +26,5 @@ then
     exit
 fi
 
-#find /gpfs/photonics/swissfel/buffer/JF* -type f -mmin +$((${hours}*60)) -delete
+find /gpfs/photonics/swissfel/buffer/JF* -type f -mmin +$((${hours}*60)) -delete
 find /gpfs/photonics/swissfel/buffer/JF*/M* -type d -mmin +$((${hours}*60)) -delete
diff --git a/scripts/retrieve_detector_data.sh b/scripts/retrieve_detector_data.sh
index d4512d3..d1b38c0 100755
--- a/scripts/retrieve_detector_data.sh
+++ b/scripts/retrieve_detector_data.sh
@@ -16,8 +16,6 @@ echo "Request to retrieve : $@ "
 echo "Started                 : "`date`
 date1=$(date +%s)
 
-PROCESS_PID=$$
-
 if [ $# == 4 ]
 then
     OUTFILE=$4
@@ -25,6 +23,20 @@ else
     OUTFILE=/gpfs/photonics/swissfel/buffer/test.${START_PULSE_ID}-${STOP_PULSE_ID}.h5
 fi
 
+case ${DETECTOR} in
+'JF01T03V01')
+  NM=3
+  ;;
+'JF07T32V01')
+  NM=32
+  ;;
+'JF13T01V01')
+  NM=1
+  ;;
+*)
+  NM=1
+esac
+
 #8 replay workers per core
 #coreAssociated_replay=(20 20 20 20 20 20 20 20 21 21 21 21 21 21 21 21 22 22 22 22 22 22 22 22 23 23 23 23 23 23 23 23)
 #4 replay workers per core
@@ -34,7 +46,8 @@ coreAssociated_replay=(7 7 7 7 8 8 8 8 9 9 9 9 10 10 10 10 11 11 11 11 12 12 12
 #1 replay workers per core
 #coreAssociated_replay=(4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35)
 
-coreAssociated_writer="2,3,4,5,6"
+#coreAssociated="7,7,7,7,8,8,8,8,9,9,9,9,10,10,10,10,11,11,11,11,12,12,12,12,13,13,13,13,14,14,14,14"
+coreAssociated="7,8,9,10,11,12,13,14"
 
 touch /tmp/detector_retrieve.log /tmp/detector_retrieve_replay.log
 
@@ -45,8 +58,8 @@ while [ ${PREVIOUS_STILL_RUN} = 1 ]
 do
     sleep 15 # we need to sleep at least to make sure that we don't read from CURRENT file
     PREVIOUS_STILL_RUN=0
-    ps -fe | grep "/usr/bin/sf_replay " | grep -v grep | grep sf_ > /dev/null
-    PREVIOUS_STILL_RUN1=$?
+#    ps -fe | grep "/usr/bin/sf_replay " | grep -v grep | grep sf_ > /dev/null
+    PREVIOUS_STILL_RUN1=1
     ps -fe | grep "/usr/bin/sf_writer " | grep -v grep | grep sf_ > /dev/null 
     PREVIOUS_STILL_RUN2=$?
     if [ ${PREVIOUS_STILL_RUN1} != 1 -o ${PREVIOUS_STILL_RUN2} != 1 ]
@@ -62,17 +75,15 @@ echo -n "Waited Time   : "
 echo $((date2-date1)) | awk '{print int($1/60)":"int($1%60)}' 
 echo "Started actual retrieve : "`date`
 
-for M in {00..31}
-do
-    taskset -c ${coreAssociated_replay[10#${M}]} /usr/bin/sf_replay ${PROCESS_PID} ${DETECTOR} M${M} ${M} ${START_PULSE_ID} ${STOP_PULSE_ID} >> /tmp/detector_retrieve_replay.log &
-done
+#for M in {00..31}
+#do
+#    taskset -c ${coreAssociated_replay[10#${M}]} /usr/bin/sf_replay ${PROCESS_PID} ${DETECTOR} M${M} ${M} ${START_PULSE_ID} ${STOP_PULSE_ID} >> /tmp/detector_retrieve_replay.log &
+#done
 
-taskset -c ${coreAssociated_writer} /usr/bin/sf_writer ${PROCESS_PID} ${OUTFILE} ${START_PULSE_ID} ${STOP_PULSE_ID} >> /tmp/detector_retrieve.log &
+taskset -c ${coreAssociated} /usr/bin/sf_writer ${OUTFILE} /gpfs/photonics/swissfel/buffer/${DETECTOR} ${NM} ${START_PULSE_ID} ${STOP_PULSE_ID} >> /tmp/detector_retrieve.log &
 
 wait
 
-rm -rf /tmp/sf-replay-${PROCESS_PID}-*
-
 date3=$(date +%s)
 echo "Finished                : "`date`
 echo -n "Retrieve Time : "
diff --git a/sf-writer/src/main.cpp b/sf-writer/src/main.cpp
index 76f4f79..1c8c233 100644
--- a/sf-writer/src/main.cpp
+++ b/sf-writer/src/main.cpp
@@ -60,13 +60,15 @@ void read_buffer(
 
 int main (int argc, char *argv[])
 {
-    if (argc != 5) {
+    if (argc != 6) {
         cout << endl;
         cout << "Usage: sf_writer [output_file] [device]";
+        cout << "  [n_modules]";
         cout << "  [start_pulse_id] [stop_pulse_id]";
         cout << endl;
         cout << "\toutput_file: Complete path to the output file." << endl;
         cout << "\tdevice: Name of detector." << endl;
+        cout << "\tn_modules: number of modules" << endl;
         cout << "\tstart_pulse_id: Start pulse_id of retrieval." << endl;
         cout << "\tstop_pulse_id: Stop pulse_id of retrieval." << endl;
         cout << endl;
@@ -76,9 +78,10 @@ int main (int argc, char *argv[])
 
     string output_file = string(argv[1]);
     const string device = string(argv[2]);
-    uint64_t start_pulse_id = (uint64_t) atoll(argv[3]);
-    uint64_t stop_pulse_id = (uint64_t) atoll(argv[4]);
-    size_t n_modules = 32;
+    size_t n_modules = atoi(argv[3]);
+    //size_t n_modules = 32;
+    uint64_t start_pulse_id = (uint64_t) atoll(argv[4]);
+    uint64_t stop_pulse_id = (uint64_t) atoll(argv[5]);
 
     uint64_t start_block = start_pulse_id / BUFFER_BLOCK_SIZE;
     uint64_t stop_block = stop_pulse_id / BUFFER_BLOCK_SIZE;