Add in a nanosleep() to the delay loop timer and some fudge...

swiftmpistepsim.c

@@ -155,10 +155,12 @@ static void injection_runner(int qid) {
     ind_req[qid]++;
 
     /* Set looptics on the first pass. Assumes MPI_Isend and MPI_Irecv are
-     * equally timed. */
+     * equally timed. Note we include a nanosleep, they are slow and a fudge factor. */
     if (looptics == 0 && usetics) {
-        looptics = getticks() - starttics;
-      if (verbose)
+      sleep.tv_nsec = 1;
+      nanosleep(&sleep, NULL);
+      looptics = (getticks() - starttics) * 2;
+      //if (verbose)
         message("injection loop took %.3f %s.", clocks_from_ticks(looptics),
                 clocks_getunit());
     }