diff --git a/ior-a2 b/ior-a2
new file mode 100644
index 0000000..c55f5d5
--- /dev/null
+++ b/ior-a2
@@ -0,0 +1 @@
+IOR with added interoperation delay.
diff --git a/src/ior.c b/src/ior.c
index 163a59c..548b779 100644
--- a/src/ior.c
+++ b/src/ior.c
@@ -703,6 +703,7 @@ static void DisplayUsage(char **argv)
                 " -k    keepFile -- don't remove the test file(s) on program exit",
                 " -K    keepFileWithError  -- keep error-filled file(s) after data-checking",
                 " -l    storeFileOffset -- use file offset as stored signature",
+		" -L N  interOpDelay -- delay between operations in seconds",
                 " -m    multiFile -- use number of reps (-i) for multiple file count",
                 " -M N  memoryPerNode -- hog memory on the node  (e.g.: 2g, 75%)",
                 " -n    noFill -- no fill in HDF5 file creation",
@@ -1561,6 +1562,7 @@ static void ShowTest(IOR_param_t * test)
         fprintf(stdout, "\t%s=%d\n", "repetitions", test->repetitions);
         fprintf(stdout, "\t%s=%d\n", "multiFile", test->multiFile);
         fprintf(stdout, "\t%s=%d\n", "interTestDelay", test->interTestDelay);
+	fprintf(stdout, "\t%s=%d\n", "interOpDelay", test->interOpDelay);
         fprintf(stdout, "\t%s=%d\n", "fsync", test->fsync);
         fprintf(stdout, "\t%s=%d\n", "fsYncperwrite", test->fsyncPerWrite);
         fprintf(stdout, "\t%s=%d\n", "useExistingTestFile",
@@ -2579,6 +2581,9 @@ static IOR_offset_t WriteOrRead(IOR_param_t * test, void *fd, int access)
                                   test, transfer, test->blockSize, &amtXferred,
                                   &transferCount, access, &errors);
                 }
+                
+                DelaySecs(test->interOpDelay);
+		
                 dataMoved += amtXferred;
                 pairCnt++;
 
diff --git a/src/ior.h b/src/ior.h
index b02c264..1201e40 100644
--- a/src/ior.h
+++ b/src/ior.h
@@ -58,6 +58,7 @@ typedef struct
     int repCounter;                  /* rep counter */
     int multiFile;                   /* multiple files */
     int interTestDelay;              /* delay between reps in seconds */
+    int interOpDelay;                /* delay between operations in seconds */
     int open;                        /* flag for writing or reading */
     int readFile;                    /* read of existing file */
     int writeFile;                   /* write of file */
diff --git a/src/parse_options.c b/src/parse_options.c
index 9f66f1d..31732ab 100644
--- a/src/parse_options.c
+++ b/src/parse_options.c
@@ -154,6 +154,8 @@ void DecodeDirective(char *line, IOR_param_t *params)
                 params->repetitions = atoi(value);
         } else if (strcasecmp(option, "intertestdelay") == 0) {
                 params->interTestDelay = atoi(value);
+        } else if (strcasecmp(option, "interopdelay") == 0) {
+                params->interOpDelay = atoi(value);
         } else if (strcasecmp(option, "readfile") == 0) {
                 params->readFile = atoi(value);
         } else if (strcasecmp(option, "writefile") == 0) {
@@ -405,7 +407,7 @@ IOR_test_t *ReadConfigScript(char *scriptName)
 IOR_test_t *ParseCommandLine(int argc, char **argv)
 {
         static const char *opts =
-          "a:A:b:BcCd:D:eEf:FgG:hHi:Ij:J:kKlmM:nN:o:O:pPqQ:rRs:St:T:uU:vVwWxX:YzZ";
+          "a:A:b:BcCd:D:eEf:FgG:hHi:Ij:J:kKlL:mM:nN:o:O:pPqQ:rRs:St:T:uU:vVwWxX:YzZ";
         int c, i;
         static IOR_test_t *tests = NULL;
 
@@ -502,6 +504,9 @@ IOR_test_t *ParseCommandLine(int argc, char **argv)
                 case 'l':
                         initialTestParams.storeFileOffset = TRUE;
                         break;
+                case 'L':
+                        initialTestParams.interOpDelay = atoi(optarg);
+                        break;
 		case 'M':
                         initialTestParams.memoryPerNode =
                                 NodeMemoryStringToBytes(optarg);