1 files changed, 17 insertions, 0 deletions
diff --git a/Carpet/CarpetIOBasic/src/iobasic.cc b/Carpet/CarpetIOBasic/src/iobasic.cc
index 2d0dcb895..2c413e3c2 100644
--- a/Carpet/CarpetIOBasic/src/iobasic.cc
+++ b/Carpet/CarpetIOBasic/src/iobasic.cc
@@ -562,6 +562,23 @@ namespace CarpetIOBasic {
         output_this_iteration = false;
       }
 
+    } else if (CCTK_EQUALS (myoutcriterion, "divisor")) {
+
+      int myoutevery = outInfo_every;
+      if (myoutevery == -2) {
+        myoutevery = out_every;
+      }
+      if (myoutevery <= 0) {
+        // output is disabled
+        output_this_iteration = false;
+      } else if ((cctk_iteration % myoutevery) == 0 ) {
+        // we already decided to output this iteration
+        output_this_iteration = true;
+      } else {
+        // we want no output at this iteration
+        output_this_iteration = false;
+      }
+
     } else if (CCTK_EQUALS (myoutcriterion, "time")) {
 
       CCTK_REAL myoutdt = outInfo_dt;