--- ray/src/rt/raypcalls.c	2008/02/20 05:21:29	2.19
+++ ray/src/rt/raypcalls.c	2008/12/02 23:28:34	2.20
@@ -1,5 +1,5 @@
 #ifndef lint
-static const char	RCSid[] = "$Id: raypcalls.c,v 2.19 2008/02/20 05:21:29 greg Exp $";
+static const char	RCSid[] = "$Id: raypcalls.c,v 2.20 2008/12/02 23:28:34 greg Exp $";
 #endif
 /*
  *  raypcalls.c - interface for parallel rendering using Radiance
@@ -185,12 +185,6 @@ ray_pinit(		/* initialize ray-tracing processes */
 
 	ray_init(otnm);			/* load the shared scene */
 
-	preload_objs();			/* preload auxiliary data */
-
-					/* set shared memory boundary */
-	shm_boundary = (char *)malloc(16);
-	strcpy(shm_boundary, "SHM_BOUNDARY");
-
 	r_send_next = 0;		/* set up queue */
 	r_recv_first = r_recv_next = RAYQLEN;
 
@@ -448,6 +442,12 @@ ray_popen(			/* open the specified # processes */
 	if (nadd <= 0)
 		return;
 	ambsync();			/* load any new ambient values */
+	if (shm_boundary == NULL) {	/* first child process? */
+		preload_objs();		/* preload auxiliary data */
+					/* set shared memory boundary */
+		shm_boundary = (char *)malloc(16);
+		strcpy(shm_boundary, "SHM_BOUNDARY");
+	}
 	fflush(NULL);			/* clear pending output */
 	while (nadd--) {		/* fork each new process */
 		int	p0[2], p1[2];