diff --git a/src/mca/gpr/gpr.h b/src/mca/gpr/gpr.h
index aa98ef6893..5bc3c0e6ce 100644
--- a/src/mca/gpr/gpr.h
+++ b/src/mca/gpr/gpr.h
@@ -35,29 +35,60 @@
 
 /** Define the notification actions for the subscription system
  */
-typedef enum {OMPI_REGISTRY_NOTIFY_MODIFICATION=0x0001,     /**< Notifies subscriber when object modified */
-	      OMPI_REGISTRY_NOTIFY_ADD_SUBSCRIBER=0x0002,   /**< Notifies subscriber when another subscriber added */
-	      OMPI_REGISTRY_NOTIFY_DELETE=0x0004,           /**< Notifies subscriber when object deleted */
-	      OMPI_REGISTRY_NOTIFY_ALL=0xffff               /**< Notifies subscriber upon any action */
-} ompi_registry_notify_action_t;
+#define OMPI_REGISTRY_NOTIFY_MODIFICATION   0x0001   /**< Notifies subscriber when object modified */
+#define OMPI_REGISTRY_NOTIFY_ADD_SUBSCRIBER 0x0002   /**< Notifies subscriber when another subscriber added */
+#define OMPI_REGISTRY_NOTIFY_DELETE         0x0004   /**< Notifies subscriber when object deleted */
+#define OMPI_REGISTRY_NOTIFY_ALL            0xffff   /**< Notifies subscriber upon any action */
+
+typedef uint16_t ompi_registry_notify_action_t;
 
 
 /** Define the mode bit-masks for registry operations.
  */
-typedef enum {OMPI_REGISTRY_NONE=0x0000,        /**< None */
-	      OMPI_REGISTRY_OVERWRITE=0x0001,   /**< Overwrite Permission */
-	      OMPI_REGISTRY_AND=0x0002,         /**< AND tokens together for search results */
-	      OMPI_REGISTRY_OR=0x0004,          /**< OR tokens for search results */
-	      OMPI_REGISTRY_XAND=0x0008,        /**< All tokens required, nothing else allowed */
-	      OMPI_REGISTRY_XOR=0x0010          /**< Any one of the tokens required, nothing else allowed */
-} ompi_registry_mode_t;
+#define OMPI_REGISTRY_NONE       0x0000   /**< None */
+#define OMPI_REGISTRY_OVERWRITE  0x0001   /**< Overwrite Permission */
+#define OMPI_REGISTRY_AND        0x0002   /**< AND tokens together for search results */
+#define OMPI_REGISTRY_OR         0x0004   /**< OR tokens for search results */
+#define OMPI_REGISTRY_XAND       0x0008   /**< All tokens required, nothing else allowed */
+#define OMPI_REGISTRY_XOR        0x0010   /**< Any one of the tokens required, nothing else allowed */
+
+typedef uint16_t ompi_registry_mode_t;
+
+
+/*
+ * Define flag values for remote commands - only used internally
+ */
+#define MCA_GPR_DEFINE_SEGMENT_CMD     0x0001
+#define MCA_GPR_DELETE_SEGMENT_CMD     0x0002
+#define MCA_GPR_PUT_CMD                0x0004
+#define MCA_GPR_DELETE_OBJECT_CMD      0x0008
+#define MCA_GPR_INDEX_CMD              0x0010
+#define MCA_GPR_SUBSCRIBE_CMD          0x0020
+#define MCA_GPR_UNSUBSCRIBE_CMD        0x0040
+#define MCA_GPR_GET_CMD                0x0080
+#define MCA_GPR_TEST_INTERNALS_CMD     0x0100
+#define MCA_GPR_ERROR                  0xffff
+
+typedef uint16_t mca_gpr_cmd_flag_t;
+
+/*
+ * packing type definitions
+ */
+/* CAUTION - any changes here must also change corresponding
+ * typedefs above
+ */
+#define MCA_GPR_OOB_PACK_CMD           OMPI_INT16
+#define MCA_GPR_OOB_PACK_ACTION        OMPI_INT16
+#define MCA_GPR_OOB_PACK_MODE          OMPI_INT16
+#define MCA_GPR_OOB_PACK_OBJECT_SIZE   OMPI_INT32
+
 
 /*
  * typedefs
  */
 
-typedef ompi_buffer_t ompi_registry_object_t;
-typedef size_t ompi_registry_object_size_t;
+typedef void* ompi_registry_object_t;
+typedef uint32_t ompi_registry_object_size_t;
 
 
 /*
@@ -74,7 +105,7 @@ typedef size_t ompi_registry_object_size_t;
  */
 struct ompi_registry_value_t {
     ompi_list_item_t item;                    /**< Allows this item to be placed on a list */
-    ompi_registry_object_t *object;           /**< Pointer to object being returned */
+    ompi_registry_object_t object;           /**< Pointer to object being returned */
     ompi_registry_object_size_t object_size;  /**< Size of returned object, in bytes */
 };
 typedef struct ompi_registry_value_t ompi_registry_value_t;
diff --git a/src/mca/gpr/proxy/gpr_proxy.c b/src/mca/gpr/proxy/gpr_proxy.c
index 2f939ff013..063d8b7dc1 100644
--- a/src/mca/gpr/proxy/gpr_proxy.c
+++ b/src/mca/gpr/proxy/gpr_proxy.c
@@ -20,7 +20,48 @@
 
 int gpr_proxy_define_segment(char *segment)
 {
-    return OMPI_SUCCESS;
+    ompi_buffer_t cmd;
+    ompi_buffer_t answer;
+    mca_gpr_cmd_flag_t command;
+    int recv_tag;
+    int32_t response;
+
+    command = MCA_GPR_DEFINE_SEGMENT_CMD;
+    recv_tag = MCA_OOB_TAG_GPR;
+
+    if (OMPI_SUCCESS != ompi_buffer_init(&cmd, 0)) { /* got a problem */
+	return OMPI_ERROR;
+    }
+
+    if (OMPI_SUCCESS != ompi_pack(cmd, (void*)&command, 1, MCA_GPR_OOB_PACK_CMD)) {
+	return OMPI_ERROR;
+    }
+
+    if (OMPI_SUCCESS != ompi_pack(cmd, (void*)segment, 1, OMPI_STRING)) {
+	return OMPI_ERROR;
+    }
+
+    if (0 > mca_oob_send_packed(mca_gpr_my_replica, cmd, MCA_OOB_TAG_GPR, 0)) {
+	return OMPI_ERROR;
+    }
+
+    if (0 > mca_oob_recv_packed(mca_gpr_my_replica, &answer, &recv_tag)) {
+	return OMPI_ERROR;
+    }
+
+    if ((OMPI_SUCCESS != ompi_unpack(answer, &command, 1, MCA_GPR_OOB_PACK_CMD))
+	|| (MCA_GPR_DEFINE_SEGMENT_CMD != command)) {
+	ompi_buffer_free(answer);
+	return OMPI_ERROR;
+    }
+
+    if (OMPI_SUCCESS != ompi_unpack(answer, &response, 1, OMPI_INT32)) {
+	ompi_buffer_free(answer);
+	return OMPI_ERROR;
+    } else {
+	ompi_buffer_free(answer);
+	return (int)response;
+    }
 }
 
 
@@ -31,15 +72,92 @@ int gpr_proxy_delete_segment(char *segment)
 
 
 int gpr_proxy_put(ompi_registry_mode_t mode, char *segment,
-		    char **tokens, ompi_registry_object_t *object,
-		    int size)
+		  char **tokens, ompi_registry_object_t *object,
+		  int size)
 {
-    return OMPI_SUCCESS;
+    ompi_buffer_t cmd;
+    ompi_buffer_t answer;
+    mca_gpr_cmd_flag_t command;
+    char **tokptr;
+    int recv_tag, i;
+    int32_t num_tokens, object_size;
+    int16_t response;
+
+    command = MCA_GPR_PUT_CMD;
+    recv_tag = MCA_OOB_TAG_GPR;
+
+    if (OMPI_SUCCESS != ompi_buffer_init(&cmd, 0)) { /* got a problem */
+	return OMPI_ERROR;
+    }
+
+    if (OMPI_SUCCESS != ompi_pack(cmd, &command, 1, MCA_GPR_OOB_PACK_CMD)) {
+	return OMPI_ERROR;
+    }
+
+    if (OMPI_SUCCESS != ompi_pack(cmd, &mode, 1, MCA_GPR_OOB_PACK_MODE)) {
+	return OMPI_ERROR;
+    }
+
+    if (OMPI_SUCCESS != ompi_pack(cmd, segment, 1, OMPI_STRING)) {
+	return OMPI_ERROR;
+    }
+
+    /* compute number of tokens */
+    tokptr = tokens;
+    while (NULL != *tokptr) {
+	num_tokens++;
+	tokptr++;
+    }
+
+    if (OMPI_SUCCESS != ompi_pack(cmd, &num_tokens, 1, OMPI_INT32)) {
+	return OMPI_ERROR;
+    }
+
+    tokptr = tokens;
+    for (i=0; i<num_tokens; i++) {  /* pack the tokens */
+	if (OMPI_SUCCESS != ompi_pack_string(cmd, *tokptr)) {
+	    return OMPI_ERROR;
+	}
+	tokptr++;
+    }
+
+    object_size = (int32_t)size;
+
+    if (OMPI_SUCCESS != ompi_pack(cmd, &object_size, 1, MCA_GPR_OOB_PACK_OBJECT_SIZE)) {
+	return OMPI_ERROR;
+    }
+
+    if (OMPI_SUCCESS != ompi_pack(cmd, object, object_size, OMPI_BYTE)) {
+	return OMPI_ERROR;
+    }
+
+    if (0 > mca_oob_send_packed(mca_gpr_my_replica, cmd, MCA_OOB_TAG_GPR, 0)) {
+	return OMPI_ERROR;
+    }
+
+    if (0 > mca_oob_recv_packed(mca_gpr_my_replica, &answer, &recv_tag)) {
+	return OMPI_ERROR;
+    }
+
+    if ((OMPI_SUCCESS != ompi_unpack(answer, &command, 1, MCA_GPR_OOB_PACK_CMD))
+	|| (MCA_GPR_PUT_CMD != command)) {
+	ompi_buffer_free(answer);
+	return OMPI_ERROR;
+    }
+
+    if (OMPI_SUCCESS != ompi_unpack(answer, &response, 1, OMPI_INT32)) {
+	ompi_buffer_free(answer);
+	return OMPI_ERROR;
+    } else {
+	ompi_buffer_free(answer);
+	return (int)response;
+    }
+    return OMPI_ERROR;
 }
 
 
-int gpr_proxy_delete(ompi_registry_mode_t mode,
-		       char *segment, char **tokens)
+int gpr_proxy_delete_object(ompi_registry_mode_t mode,
+			    char *segment, char **tokens)
 {
     return OMPI_SUCCESS;
 }
@@ -72,11 +190,103 @@ int gpr_proxy_unsubscribe(ompi_process_name_t *caller, ompi_registry_mode_t mode
 
 ompi_list_t* gpr_proxy_get(ompi_registry_mode_t mode, char *segment, char **tokens)
 {
-    ompi_list_t *answer;
+    ompi_buffer_t cmd;
+    ompi_buffer_t answer;
+    mca_gpr_cmd_flag_t command;
+    char **tokptr;
+    int recv_tag, i;
+    int32_t num_tokens, object_size, num_responses;
+    ompi_registry_value_t *newptr;
+    ompi_registry_object_t *object;
+    ompi_list_t *returned_list;
 
-    answer = OBJ_NEW(ompi_list_t);
+    returned_list = OBJ_NEW(ompi_list_t);
 
-    return answer;
+    /* need to protect against errors */
+    if (NULL == segment || NULL == tokens || NULL == *tokens) {
+	return returned_list;
+    }
+
+    command = MCA_GPR_GET_CMD;
+    recv_tag = MCA_OOB_TAG_GPR;
+
+    if (OMPI_SUCCESS != ompi_buffer_init(&cmd, 0)) { /* got a problem */
+	return returned_list;
+    }
+
+    if (OMPI_SUCCESS != ompi_pack(cmd, &command, 1, MCA_GPR_OOB_PACK_CMD)) {
+	goto CLEANUP;
+    }
+
+    if (OMPI_SUCCESS != ompi_pack(cmd, &mode, 1, MCA_GPR_OOB_PACK_MODE)) {
+	goto CLEANUP;
+    }
+
+    if (OMPI_SUCCESS != ompi_pack_string(cmd, segment)) {
+	goto CLEANUP;
+    }
+
+    /* compute number of tokens */
+    tokptr = tokens;
+    while (NULL != *tokptr) {
+	num_tokens++;
+	tokptr++;
+    }
+
+    if (OMPI_SUCCESS != ompi_pack(cmd, &num_tokens, 1, OMPI_INT32)) {
+	goto CLEANUP;
+    }
+
+    tokptr = tokens;
+    for (i=0; i<num_tokens; i++) {  /* pack the tokens */
+	if (OMPI_SUCCESS != ompi_pack_string(cmd, *tokptr)) {
+	    goto CLEANUP;
+	}
+	tokptr++;
+    }
+
+    if (0 > mca_oob_send_packed(mca_gpr_my_replica, cmd, MCA_OOB_TAG_GPR, 0)) {
+	goto CLEANUP;
+    }
+
+
+    if (0 > mca_oob_recv_packed(mca_gpr_my_replica, &answer, &recv_tag)) {
+	goto CLEANUP;
+    }
+
+    if ((OMPI_SUCCESS != ompi_unpack(answer, &command, 1, MCA_GPR_OOB_PACK_CMD))
+	|| (MCA_GPR_GET_CMD != command)) {
+	ompi_buffer_free(answer);
+	goto CLEANUP;
+    }
+
+    if ((OMPI_SUCCESS != ompi_unpack(answer, &num_responses, 1, OMPI_INT32)) ||
+	(0 >= num_responses)) {
+	ompi_buffer_free(answer);
+	goto CLEANUP;
+    }
+
+    for (i=0; i<num_responses; i++) {
+	if (OMPI_SUCCESS != ompi_unpack(answer, &object_size, 1, MCA_GPR_OOB_PACK_OBJECT_SIZE)) {
+	    ompi_buffer_free(answer);
+	    goto CLEANUP;
+	}
+	object = (ompi_registry_object_t)malloc(object_size);
+	if (OMPI_SUCCESS != ompi_unpack(answer, object, object_size, OMPI_BYTE)) {
+	    ompi_buffer_free(answer);
+	    goto CLEANUP;
+	}
+	newptr = OBJ_NEW(ompi_registry_value_t);
+	newptr->object_size = object_size;
+	newptr->object = (ompi_registry_object_t)malloc(object_size);
+	memcpy(newptr->object, object, object_size);
+	free(object);
+	ompi_list_append(returned_list, &newptr->item);
+    }
+
+ CLEANUP:
+    ompi_buffer_free(cmd);
+    return returned_list;
 }
 
 ompi_list_t* gpr_proxy_test_internals(int level)
diff --git a/src/mca/gpr/proxy/gpr_proxy.h b/src/mca/gpr/proxy/gpr_proxy.h
index 6b1eaec893..1508500b83 100644
--- a/src/mca/gpr/proxy/gpr_proxy.h
+++ b/src/mca/gpr/proxy/gpr_proxy.h
@@ -53,8 +53,8 @@ int gpr_proxy_put(ompi_registry_mode_t mode, char *segment,
 /*
  * Implementation of delete()
  */
-int gpr_proxy_delete(ompi_registry_mode_t mode,
-		     char *segment, char **tokens);
+int gpr_proxy_delete_object(ompi_registry_mode_t mode,
+			    char *segment, char **tokens);
 
 /*
  * Implementation of index()
diff --git a/src/mca/gpr/proxy/gpr_proxy_component.c b/src/mca/gpr/proxy/gpr_proxy_component.c
index ee11787157..05f3602b74 100644
--- a/src/mca/gpr/proxy/gpr_proxy_component.c
+++ b/src/mca/gpr/proxy/gpr_proxy_component.c
@@ -52,7 +52,7 @@ static mca_gpr_base_module_t mca_gpr_proxy = {
     gpr_proxy_delete_segment,
     gpr_proxy_subscribe,
     gpr_proxy_unsubscribe,
-    gpr_proxy_delete,
+    gpr_proxy_delete_object,
     gpr_proxy_index,
     gpr_proxy_test_internals
 };
diff --git a/src/mca/gpr/replica/gpr_replica.c b/src/mca/gpr/replica/gpr_replica.c
index 29ef1958d8..0a94138668 100644
--- a/src/mca/gpr/replica/gpr_replica.c
+++ b/src/mca/gpr/replica/gpr_replica.c
@@ -29,13 +29,18 @@ int gpr_replica_define_segment(char *segment)
 {
     mca_gpr_registry_segment_t *seg;
     mca_gpr_replica_key_t key;
+    int response;
 
-    key = gpr_replica_define_key(segment, NULL);
-     if (MCA_GPR_REPLICA_KEY_MAX == key) {
- 	return(OMPI_ERROR);
+     response = gpr_replica_define_key(segment, NULL);
+     if (0 > response) {  /* got some kind of error code */
+ 	return response;
      }
 
      /* need to add the segment to the registry */
+     key = gpr_replica_get_key(segment, NULL);
+     if (MCA_GPR_REPLICA_KEY_MAX == key) {  /* couldn't retrieve it */
+	 return OMPI_ERROR;
+     }
      seg = OBJ_NEW(mca_gpr_registry_segment_t);
      seg->segment = key;
      ompi_list_append(&mca_gpr_replica_head.registry, &seg->item);
@@ -241,7 +246,7 @@ ompi_list_t* gpr_replica_get(ompi_registry_mode_t mode,
 	if (gpr_replica_check_key_list(mode, keys, reg)) { /* found the key(s) on the list */
 	    ans = OBJ_NEW(ompi_registry_value_t);
 	    ans->object_size = reg->object_size;
-	    ans->object = (ompi_buffer_t*)malloc(ans->object_size);
+	    ans->object = (ompi_registry_object_t*)malloc(ans->object_size);
 	    memcpy(ans->object, reg->object, ans->object_size);
 	    ompi_list_append(answer, &ans->item);
 	}
diff --git a/src/mca/gpr/replica/gpr_replica.h b/src/mca/gpr/replica/gpr_replica.h
index a8223171d3..8ddd5ca140 100644
--- a/src/mca/gpr/replica/gpr_replica.h
+++ b/src/mca/gpr/replica/gpr_replica.h
@@ -185,4 +185,8 @@ ompi_list_t* gpr_replica_get(ompi_registry_mode_t mode,
 			     char *segment, char **tokens);
 ompi_list_t* gpr_replica_test_internals(int level);
 
+void mca_gpr_replica_recv(int status, ompi_process_name_t* sender,
+			  ompi_buffer_t buffer, int tag,
+			  void* cbdata);
+
 #endif
diff --git a/src/mca/gpr/replica/gpr_replica_component.c b/src/mca/gpr/replica/gpr_replica_component.c
index 49b83498b2..89aa887af3 100644
--- a/src/mca/gpr/replica/gpr_replica_component.c
+++ b/src/mca/gpr/replica/gpr_replica_component.c
@@ -16,6 +16,8 @@
 #include "include/constants.h"
 #include "util/proc_info.h"
 #include "util/output.h"
+#include "util/pack.h"
+
 #include "mca/mca.h"
 #include "mca/oob/base/base.h"
 #include "mca/gpr/base/base.h"
@@ -274,6 +276,9 @@ mca_gpr_base_module_t *mca_gpr_replica_init(bool *allow_multi_user_threads, bool
 	seg->segment = gpr_replica_get_key("universe", NULL);
 	ompi_list_append(&mca_gpr_replica_head.registry, &seg->item);
 
+	/* issue the non-blocking receive */
+	mca_oob_recv_packed_nb(MCA_OOB_NAME_ANY, MCA_OOB_TAG_GPR, 0, mca_gpr_replica_recv, NULL);
+
 	/* Return the module */
 
 	initialized = true;
@@ -299,3 +304,174 @@ int mca_gpr_replica_finalize(void)
 
     return OMPI_SUCCESS;
 }
+
+/* 
+ * handle message from proxies
+ */
+
+void mca_gpr_replica_recv(int status, ompi_process_name_t* sender,
+			  ompi_buffer_t buffer, int tag,
+			  void* cbdata)
+{
+    ompi_buffer_t answer, error_answer;
+    ompi_registry_object_t *object;
+    ompi_registry_object_size_t object_size;
+    ompi_registry_mode_t mode;
+    ompi_registry_notify_action_t action;
+    ompi_registry_value_t *regval;
+    ompi_list_t *returned_list;
+    char **tokens, **tokptr;
+    int32_t num_tokens, level, i;
+    mca_gpr_cmd_flag_t command;
+    char *segment;
+    int32_t response;
+
+    if (OMPI_SUCCESS != ompi_buffer_init(&answer, 0)) {
+	/* RHC -- not sure what to do if this fails */
+    }
+
+    if (OMPI_SUCCESS != ompi_unpack(buffer, &command, 1, MCA_GPR_OOB_PACK_CMD)) {
+	goto RETURN_ERROR;
+    }
+
+    if (MCA_GPR_DEFINE_SEGMENT_CMD == command) {   /* got a command to create a new segment */
+	if (OMPI_SUCCESS != ompi_unpack_string(buffer, &segment)) {
+	    goto RETURN_ERROR;
+	}
+
+	response = (int32_t)ompi_registry.define_segment(segment);
+
+	if (OMPI_SUCCESS != ompi_pack(answer, &command, 1, MCA_GPR_OOB_PACK_CMD)) {
+	    goto RETURN_ERROR;
+	}
+	if (OMPI_SUCCESS != ompi_pack(answer, &response, 1, OMPI_INT16)) {
+	    goto RETURN_ERROR;
+	}
+	if (0 > mca_oob_send_packed(sender, answer, tag, 0)) {
+	    /* RHC -- not sure what to do if the return send fails */
+	}
+    } else if (MCA_GPR_DELETE_SEGMENT_CMD == command) {   /* got command to delete a segment */
+	if (OMPI_SUCCESS != ompi_unpack_string(buffer, &segment)) {
+	    goto RETURN_ERROR;
+	}
+
+	response = (int16_t)ompi_registry.delete_segment(segment);
+
+	if (OMPI_SUCCESS != ompi_pack(answer, &command, 1, MCA_GPR_OOB_PACK_CMD)) {
+	    goto RETURN_ERROR;
+	}
+	if (OMPI_SUCCESS != ompi_pack(answer, &response, 1, OMPI_INT32)) {
+	    goto RETURN_ERROR;
+	}
+	if (0 > mca_oob_send_packed(sender, answer, tag, 0)) {
+	    /* RHC -- not sure what to do if the return send fails */
+	}
+    } else if (MCA_GPR_PUT_CMD == command) {  /* got command to put object on registry */
+
+	if (OMPI_SUCCESS != ompi_unpack(buffer, &mode, 1, MCA_GPR_OOB_PACK_MODE)) {
+	    goto RETURN_ERROR;
+	}
+
+	if (OMPI_SUCCESS != ompi_unpack_string(buffer, &segment)) {
+	    goto RETURN_ERROR;
+	}
+
+	if (OMPI_SUCCESS != ompi_unpack(buffer, &num_tokens, 1, OMPI_INT32)) {
+	    goto RETURN_ERROR;
+	}
+
+	tokens = (char**)malloc(num_tokens*sizeof(char*));
+
+	tokptr = tokens;
+	for (i=0; i<num_tokens; i++) {
+	    if (OMPI_SUCCESS != ompi_unpack_string(buffer, tokptr)) {
+		goto RETURN_ERROR;
+	    }
+	    tokptr++;
+	}
+
+	if (OMPI_SUCCESS != ompi_unpack(buffer, &object_size, 1, MCA_GPR_OOB_PACK_OBJECT_SIZE)) {
+	    goto RETURN_ERROR;
+	}
+
+	object = (ompi_registry_object_t)malloc(object_size);
+	if (OMPI_SUCCESS != ompi_unpack(buffer, object, object_size, OMPI_BYTE)) {
+	    goto RETURN_ERROR;
+	}
+
+	response = (int32_t)ompi_registry.put(mode, segment, tokens, object, object_size);
+
+	if (OMPI_SUCCESS != ompi_pack(answer, &command, 1, MCA_GPR_OOB_PACK_CMD)) {
+	    goto RETURN_ERROR;
+	}
+
+	if (OMPI_SUCCESS != ompi_pack(answer, &response, 1, OMPI_INT32)) {
+	    goto RETURN_ERROR;
+	}
+	if (0 > mca_oob_send_packed(sender, answer, tag, 0)) {
+	    /* RHC -- not sure what to do if the return send fails */
+	}
+    } else if (MCA_GPR_GET_CMD == command) {  /* got command to put object on registry */
+
+	if (OMPI_SUCCESS != ompi_unpack(buffer, &mode, 1, MCA_GPR_OOB_PACK_MODE)) {
+	    goto RETURN_ERROR;
+	}
+
+	if (OMPI_SUCCESS != ompi_unpack_string(buffer, &segment)) {
+	    goto RETURN_ERROR;
+	}
+
+	if (OMPI_SUCCESS != ompi_unpack(buffer, &num_tokens, 1, OMPI_INT32)) {
+	    goto RETURN_ERROR;
+	}
+
+	tokens = (char**)malloc(num_tokens*sizeof(char*));
+	tokptr = tokens;
+	for (i=0; i<num_tokens; i++) {
+	    if (OMPI_SUCCESS != ompi_unpack_string(buffer, tokptr)) {
+		goto RETURN_ERROR;
+	    }
+	    tokptr++;
+	}
+
+
+	returned_list = ompi_registry.get(mode, segment, tokens);
+
+	if (OMPI_SUCCESS != ompi_pack(answer, (void*)&command, 1, MCA_GPR_OOB_PACK_CMD)) {
+	    goto RETURN_ERROR;
+	}
+
+	response = (int32_t)ompi_list_get_size(returned_list);
+	if (OMPI_SUCCESS != ompi_pack(answer, (void*)&response, 1, OMPI_INT32)) {
+	    goto RETURN_ERROR;
+	}
+
+	if (0 < response) { /* don't send anything else back if the list is empty */
+	    for (regval = (ompi_registry_value_t*)ompi_list_get_first(returned_list);
+		 regval != (ompi_registry_value_t*)ompi_list_get_end(returned_list);
+		 regval = (ompi_registry_value_t*)ompi_list_get_next(regval)) {  /* traverse the list */
+		if (OMPI_SUCCESS != ompi_pack(answer, &regval->object_size, 1, MCA_GPR_OOB_PACK_OBJECT_SIZE)) {
+		    goto RETURN_ERROR;
+		}
+		if (OMPI_SUCCESS != ompi_pack(answer, regval->object, regval->object_size, OMPI_BYTE)) {
+		    goto RETURN_ERROR;
+		}
+	    }
+	}
+	if (0 > mca_oob_send_packed(sender, answer, tag, 0)) {
+	    /* RHC -- not sure what to do if the return send fails */
+	}
+    } else {  /* got an unrecognized command */
+    RETURN_ERROR:
+	ompi_buffer_init(&error_answer, 8);
+	command = MCA_GPR_ERROR;
+	ompi_pack(error_answer, (void*)&command, 1, MCA_GPR_OOB_PACK_CMD);
+	mca_oob_send_packed(sender, error_answer, tag, 0);
+	ompi_buffer_free(error_answer);
+    }
+
+    ompi_buffer_free(answer);
+
+    /* reissue the non-blocking receive */
+    mca_oob_recv_packed_nb(MCA_OOB_NAME_ANY, MCA_OOB_TAG_GPR, 0, mca_gpr_replica_recv, NULL);
+}
diff --git a/src/mca/gpr/replica/gpr_replica_internals.c b/src/mca/gpr/replica/gpr_replica_internals.c
index f702f52584..a2a05a6c9b 100644
--- a/src/mca/gpr/replica/gpr_replica_internals.c
+++ b/src/mca/gpr/replica/gpr_replica_internals.c
@@ -135,14 +135,14 @@ ompi_list_t *gpr_replica_get_key_list(char *segment, char **tokens)
     return keys;
 }
 
-mca_gpr_replica_key_t gpr_replica_define_key(char *segment, char *token)
+int gpr_replica_define_key(char *segment, char *token)
 {
     mca_gpr_registry_segment_t *seg;
     mca_gpr_keytable_t *ptr_seg, *ptr_key, *new;
 
     /* protect against errors */
     if (NULL == segment) {
-	return MCA_GPR_REPLICA_KEY_MAX;
+	return OMPI_ERROR;
     }
 
     /* if token is NULL, then this is defining a segment name. Check dictionary to ensure uniqueness */
@@ -151,7 +151,7 @@ mca_gpr_replica_key_t gpr_replica_define_key(char *segment, char *token)
 	     ptr_seg != (mca_gpr_keytable_t*)ompi_list_get_end(&mca_gpr_replica_head.segment_dict);
 	     ptr_seg = (mca_gpr_keytable_t*)ompi_list_get_next(ptr_seg)) {
 	    if (0 == strcmp(segment, ptr_seg->token)) {
-		return MCA_GPR_REPLICA_KEY_MAX;
+		return OMPI_EXISTS;
 	    }
 	}
 
@@ -163,14 +163,14 @@ mca_gpr_replica_key_t gpr_replica_define_key(char *segment, char *token)
 	    mca_gpr_replica_head.lastkey++;
 	    new->key = mca_gpr_replica_head.lastkey;
 	    } else {  /* out of keys */
-		return MCA_GPR_REPLICA_KEY_MAX;
+		return OMPI_ERR_OUT_OF_RESOURCE;
 	    }
 	} else {
 	    ptr_key = (mca_gpr_keytable_t*)ompi_list_remove_first(&mca_gpr_replica_head.freekeys);
 	    new->key = ptr_key->key;
 	}
 	ompi_list_append(&mca_gpr_replica_head.segment_dict, &new->item);
-	return(new->key);
+	return OMPI_SUCCESS;
     }
 
     /* okay, token is specified */
@@ -182,7 +182,7 @@ mca_gpr_replica_key_t gpr_replica_define_key(char *segment, char *token)
 	     ptr_key != (mca_gpr_keytable_t*)ompi_list_get_end(&seg->keytable);
 	     ptr_key = (mca_gpr_keytable_t*)ompi_list_get_next(ptr_key)) {
 	    if (0 == strcmp(token, ptr_key->token)) {
-		return MCA_GPR_REPLICA_KEY_MAX; /* already taken, report error */
+		return OMPI_EXISTS; /* already taken, report error */
 	    }
 	}
 	/* okay, token is unique - create dictionary entry */
@@ -196,10 +196,10 @@ mca_gpr_replica_key_t gpr_replica_define_key(char *segment, char *token)
 	    new->key = ptr_key->key;
 	}
 	ompi_list_append(&seg->keytable, &new->item);
-	return(new->key);
+	return OMPI_SUCCESS;
     }
     /* couldn't find segment */
-    return MCA_GPR_REPLICA_KEY_MAX;
+    return OMPI_ERROR;
 }
 
 int gpr_replica_delete_key(char *segment, char *token)
diff --git a/src/mca/gpr/replica/gpr_replica_internals.h b/src/mca/gpr/replica/gpr_replica_internals.h
index 501fa117ed..929f9d6e1f 100644
--- a/src/mca/gpr/replica/gpr_replica_internals.h
+++ b/src/mca/gpr/replica/gpr_replica_internals.h
@@ -21,7 +21,7 @@
 mca_gpr_replica_key_t gpr_replica_get_key(char *segment, char *token);
 
 /** Add a token to a segment's dictionary.
- * The gpr_replica_definekey() function allows the addition of a new definition to
+ * The gpr_replica_define_key() function allows the addition of a new definition to
  * the registry's token-key dictionaries. The specified token is assigned an integer
  * value within the specified segment, and the entry is added to the segment's token-key
  * dictionary.
@@ -30,10 +30,11 @@ mca_gpr_replica_key_t gpr_replica_get_key(char *segment, char *token);
  * @param token Pointer to a character string containing the token to be defined. If token=NULL,
  * the function adds the token to the segment dictionary, thus defining a new segment name.
  *
- * @retval key Unsigned long integer value corresponding to the specified token within the specified segment.
- * @retval 0 Indicates that the entry could not be created.
+ * @retval OMPI_EXISTS Indicates that the requested dictionary entry already exists.
+ * @retval OMPI_ERR_OUT_OF_RESOURCE Indicates that the dictionary is full.
+ * @retval OMPI_SUCCESS Indicates that the dictionary entry was created.
  */
-mca_gpr_replica_key_t gpr_replica_define_key(char *segment, char *token);
+int gpr_replica_define_key(char *segment, char *token);
 
 /** Delete a token from a segment's dictionary.
  * The gpr_replica_deletekey() function allows the removal of a definition from the