Index: trunk/ippTools/src/magictoolConfig.c
===================================================================
--- trunk/ippTools/src/magictoolConfig.c	(revision 20973)
+++ trunk/ippTools/src/magictoolConfig.c	(revision 21005)
@@ -63,4 +63,6 @@
     psMetadataAddStr(definerunArgs, PS_LIST_TAIL, "-workdir", 0, "define workdir (required)", NULL);
     psMetadataAddS64(definerunArgs, PS_LIST_TAIL, "-exp_id", 0, "define exp_id (required)", 0);
+    // following argument is for compatability
+    psMetadataAddS64(definerunArgs, PS_LIST_TAIL, "-diff_id", 0, "define diff_id", 0);
     psMetadataAddStr(definerunArgs, PS_LIST_TAIL, "-label", 0, "define label", NULL);
     psMetadataAddStr(definerunArgs, PS_LIST_TAIL, "-dvodb", 0, "define dvodb", NULL);