diff --git a/src/ior-output.c b/src/ior-output.c
index 4c05170..b1a547a 100644
--- a/src/ior-output.c
+++ b/src/ior-output.c
@@ -20,6 +20,8 @@ void PrintTableHeader(){
     fprintf(out_resultfile, "\n");
     fprintf(out_resultfile, "access    bw(MiB/s)  IOPS       Latency(s)  block(KiB) xfer(KiB)  open(s)    wr/rd(s)   close(s)   total(s)   iter\n");
     fprintf(out_resultfile, "------    ---------  ----       ----------  ---------- ---------  --------   --------   --------   --------   ----\n");
+  }else if(outputFormat == OUTPUT_CSV){
+    fprintf(out_resultfile, "access,bw(MiB/s),IOPS,Latency,block(KiB),xfer(KiB),open(s),wr/rd(s),close(s),total(s),iter\n");
   }
 }
 
@@ -45,8 +47,6 @@ static void PrintKeyValStart(char * key){
   }
   if(outputFormat == OUTPUT_JSON){
     fprintf(out_resultfile, "\"%s\": \"", key);
-  }else if(outputFormat == OUTPUT_CSV){
-
   }
 }
 
@@ -84,7 +84,7 @@ static void PrintKeyVal(char * key, char * value){
   if(outputFormat == OUTPUT_JSON){
     fprintf(out_resultfile, "\"%s\": \"%s\"", key, value);
   }else if(outputFormat == OUTPUT_CSV){
-    fprintf(out_resultfile, "%s", value);
+    fprintf(out_resultfile, "%s,", value);
   }
 }
 
@@ -98,7 +98,7 @@ static void PrintKeyValDouble(char * key, double value){
   if(outputFormat == OUTPUT_JSON){
     fprintf(out_resultfile, "\"%s\": %.4f", key, value);
   }else if(outputFormat == OUTPUT_CSV){
-    fprintf(out_resultfile, "%.4f", value);
+    fprintf(out_resultfile, "%.4f,", value);
   }
 }
 
@@ -113,7 +113,7 @@ static void PrintKeyValInt(char * key, int64_t value){
   if(outputFormat == OUTPUT_JSON){
     fprintf(out_resultfile, "\"%s\": %lld", key, (long long)  value);
   }else if(outputFormat == OUTPUT_CSV){
-    fprintf(out_resultfile, "%lld", (long long) value);
+    fprintf(out_resultfile, "%lld,", (long long) value);
   }
 }
 
@@ -203,13 +203,16 @@ void PrintRepeatEnd(){
 void PrintRepeatStart(){
   if (rank != 0)
           return;
-  if( outputFormat == OUTPUT_DEFAULT){
+  if(outputFormat == OUTPUT_DEFAULT){
     return;
   }
   PrintArrayStart();
 }
 
 void PrintTestEnds(){
+  if (outputFormat == OUTPUT_CSV){
+      return;
+  }
   if (rank != 0 ||  verbose <= VERBOSE_0) {
     PrintEndSection();
     return;
@@ -246,7 +249,20 @@ void PrintReducedResult(IOR_test_t *test, int access, double bw, double iops, do
     PrintKeyValDouble("closeTime", diff_subset[2]);
     PrintKeyValDouble("totalTime", totalTime);
     PrintEndSection();
+  }else if (outputFormat == OUTPUT_CSV){
+    PrintKeyVal("access", access == WRITE ? "write" : "read");
+    PrintKeyValDouble("bwMiB", bw / MEBIBYTE);
+    PrintKeyValDouble("iops", iops);
+    PrintKeyValDouble("latency", latency);
+    PrintKeyValDouble("blockKiB", (double)test->params.blockSize / KIBIBYTE);
+    PrintKeyValDouble("xferKiB", (double)test->params.transferSize / KIBIBYTE);
+    PrintKeyValDouble("openTime", diff_subset[0]);
+    PrintKeyValDouble("wrRdTime", diff_subset[1]);
+    PrintKeyValDouble("closeTime", diff_subset[2]);
+    PrintKeyValDouble("totalTime", totalTime);
+    fprintf(out_resultfile, "%d\n", rep);
   }
+
   fflush(out_resultfile);
 }
 
@@ -258,6 +274,10 @@ void PrintHeader(int argc, char **argv)
         if (rank != 0)
                 return;
 
+        if (outputFormat == OUTPUT_CSV){
+            return;
+        }
+
         PrintStartSection();
         if (outputFormat != OUTPUT_DEFAULT){
           PrintKeyVal("Version", META_VERSION);
@@ -319,6 +339,9 @@ void PrintHeader(int argc, char **argv)
  */
 void ShowTestStart(IOR_param_t *test)
 {
+  if (outputFormat == OUTPUT_CSV){
+      return;
+  }
   PrintStartSection();
   PrintKeyValInt("TestID", test->id);
   PrintKeyVal("StartTime", CurrentTimeString());
@@ -401,6 +424,9 @@ void ShowTestEnd(IOR_test_t *tptr){
  */
 void ShowSetup(IOR_param_t *params)
 {
+  if (outputFormat == OUTPUT_CSV){
+      return;
+  }
   if (params->debug) {
       fprintf(out_logfile, "\n*** DEBUG MODE ***\n");
       fprintf(out_logfile, "*** %s ***\n\n", params->debug);
@@ -612,8 +638,6 @@ static void PrintLongSummaryOneOperation(IOR_test_t *test, const int access)
           }
           PrintKeyValDouble("xsizeMiB", (double) point->aggFileSizeForBW / MEBIBYTE);
           PrintEndSection();
-        }else if (outputFormat == OUTPUT_CSV){
-
         }
 
         fflush(out_resultfile);
@@ -638,7 +662,7 @@ void PrintLongSummaryHeader()
         if (rank != 0 || verbose <= VERBOSE_0)
                 return;
         if(outputFormat != OUTPUT_DEFAULT){
-          return;
+            return;
         }
 
         fprintf(out_resultfile, "\n");
@@ -665,8 +689,6 @@ void PrintLongSummaryAllTests(IOR_test_t *tests_head)
     fprintf(out_resultfile, "Summary of all tests:");
   }else if (outputFormat == OUTPUT_JSON){
     PrintNamedArrayStart("summary");
-  }else if (outputFormat == OUTPUT_CSV){
-
   }
 
   PrintLongSummaryHeader();