diff --git a/include/villas/node.h b/include/villas/node.h
index 06c0dcc09..29c312124 100644
--- a/include/villas/node.h
+++ b/include/villas/node.h
@@ -158,4 +158,7 @@ int node_write(struct node *n, struct sample *smps[], unsigned cnt);
 
 int node_fd(struct node *n);
 
+struct memtype * node_memtype(struct node *n, struct memtype *parent);
+
+
 /** @} */
diff --git a/include/villas/node_type.h b/include/villas/node_type.h
index 5e6a47d4f..6de269f52 100644
--- a/include/villas/node_type.h
+++ b/include/villas/node_type.h
@@ -30,6 +30,7 @@
 
 #include "list.h"
 #include "common.h"
+#include "memory.h"
 
 /* Forward declarations */
 struct node;
@@ -149,6 +150,9 @@ struct node_type {
 
 	/** Return a file descriptor which can be used by poll / select to detect the availability of new data. */
 	int (*fd)(struct node *n);
+
+	/** */
+	struct memtype * (*memtype)(struct node *n, struct memtype *parent);
 };
 
 /** Initialize all registered node type subsystems.
diff --git a/lib/node.c b/lib/node.c
index 7a8c02f99..eae2583e9 100644
--- a/lib/node.c
+++ b/lib/node.c
@@ -544,6 +544,11 @@ int node_fd(struct node *n)
 	return n->_vt->fd ? n->_vt->fd(n) : -1;
 }
 
+struct memtype * node_memtype(struct node *n, struct memtype *parent)
+{
+	return n->_vt->memtype ? n->_vt->memtype(n) : &memtype_huge;
+}
+
 int node_parse_list(struct list *list, json_t *cfg, struct list *all)
 {
 	struct node *node;