diff --git a/ompi/proc/proc.c b/ompi/proc/proc.c
index 12b781e7d2..d30182f7a4 100644
--- a/ompi/proc/proc.c
+++ b/ompi/proc/proc.c
@@ -107,7 +107,6 @@ int ompi_proc_init(void)
         OMPI_CAST_RTE_NAME(&proc->super.proc_name)->vpid = i;
 
         if (i == OMPI_PROC_MY_NAME->vpid) {
-            opal_value_t kv;
             ompi_proc_local_proc = proc;
             proc->super.proc_flags = OPAL_PROC_ALL_LOCAL;
             proc->super.proc_hostname = strdup(ompi_process_info.nodename);
@@ -116,13 +115,8 @@ int ompi_proc_init(void)
             opal_proc_local_set(&proc->super);
 #if OPAL_ENABLE_HETEROGENEOUS_SUPPORT
             /* add our arch to the modex */
-            OBJ_CONSTRUCT(&kv, opal_value_t);
-            kv.key = strdup(OPAL_DSTORE_ARCH);
-            kv.type = OPAL_UINT32;
-            kv.data.uint32 = opal_local_arch;
-            ret = opal_pmix.put(PMIX_REMOTE, &kv);
-            OBJ_DESTRUCT(&kv);
-
+            OPAL_MODEX_SEND_STRING(ret, PMIX_SYNC_REQD, PMIX_REMOTE, OPAL_DSTORE_ARCH,
+                                   &proc->super.proc_arch, OPAL_UINT32);
             if (OPAL_SUCCESS != ret) {
                 return ret;
             }
diff --git a/opal/util/proc.h b/opal/util/proc.h
index db5cfbcfc9..8a52a08101 100644
--- a/opal/util/proc.h
+++ b/opal/util/proc.h
@@ -23,7 +23,7 @@
 #include "opal/dss/dss.h"
 
 #if OPAL_ENABLE_HETEROGENEOUS_SUPPORT
-#include "opal/types.h"
+#include <arpa/inet.h>
 #endif
 
 /**
@@ -37,11 +37,22 @@
 typedef opal_identifier_t opal_process_name_t;
 
 #if OPAL_ENABLE_HETEROGENEOUS_SUPPORT && !defined(WORDS_BIGENDIAN)
-#define OPAL_PROCESS_NAME_NTOH(guid) \
-    guid = ntoh64(guid)
-
-#define OPAL_PROCESS_NAME_HTON(guid) \
-    guid = hton64(guid)
+#define OPAL_PROCESS_NAME_NTOH(guid) opal_process_name_ntoh_intr(&(guid))
+static inline __opal_attribute_always_inline__ void
+opal_process_name_ntoh_intr(opal_process_name_t *name)
+{
+    uint32_t * w = (uint32_t *)name;
+    w[0] = ntohl(w[0]);
+    w[1] = ntohl(w[1]);
+}
+#define OPAL_PROCESS_NAME_HTON(guid) opal_process_name_hton_intr(&(guid))
+static inline __opal_attribute_always_inline__ void
+opal_process_name_hton_intr(opal_process_name_t *name)
+{
+    uint32_t * w = (uint32_t *)name;
+    w[0] = htonl(w[0]);
+    w[1] = htonl(w[1]);
+}
 #else
 #define OPAL_PROCESS_NAME_NTOH(guid)
 #define OPAL_PROCESS_NAME_HTON(guid)
diff --git a/orte/include/orte/types.h b/orte/include/orte/types.h
index f14b527e6d..c9ae32063c 100644
--- a/orte/include/orte/types.h
+++ b/orte/include/orte/types.h
@@ -10,8 +10,6 @@
  * Copyright (c) 2004-2005 The Regents of the University of California.
  *                         All rights reserved.
  * Copyright (c) 2014      Intel, Inc. All rights reserved.
- * Copyright (c) 2014      Research Organization for Information Science
- *                         and Technology (RIST). All rights reserved.
  * $COPYRIGHT$
  *
  * Additional copyrights may follow
@@ -85,17 +83,17 @@ typedef uint32_t orte_vpid_t;
 #define ORTE_VPID_MAX       UINT32_MAX-2
 #define ORTE_VPID_MIN       0
 
-#if OPAL_ENABLE_HETEROGENEOUS_SUPPORT && !defined(WORDS_BIGENDIAN)
-#define ORTE_PROCESS_NAME_HTON(n)                      \
-    OPAL_PROCESS_NAME_HTON(*(opal_process_name_t *)&(n))
+#define ORTE_PROCESS_NAME_HTON(n)       \
+do {                                    \
+    n.jobid = htonl(n.jobid);           \
+    n.vpid = htonl(n.vpid);             \
+} while (0)
 
-#define ORTE_PROCESS_NAME_NTOH(n)                      \
-    OPAL_PROCESS_NAME_NTOH(*(opal_process_name_t *)&(n))
-#else
-#define ORTE_PROCESS_NAME_HTON(n)
-
-#define ORTE_PROCESS_NAME_NTOH(n)
-#endif
+#define ORTE_PROCESS_NAME_NTOH(n)       \
+do {                                    \
+    n.jobid = ntohl(n.jobid);           \
+    n.vpid = ntohl(n.vpid);             \
+} while (0)
 
 #define ORTE_NAME_ARGS(n) \
     (unsigned long) ((NULL == n) ? (unsigned long)ORTE_JOBID_INVALID : (unsigned long)(n)->jobid), \
@@ -117,23 +115,11 @@ typedef uint32_t orte_vpid_t;
 
 /*
  * define the process name structure
- * the OPAL layer sees an orte_process_name_t as an opal_process_name_t aka uint64_t
- * if heterogeneous is supported, when converting this uint64_t to
- * an endian neutral format, vpid and jobid will be swapped.
- * consequently, the orte_process_name_t struct must have different definitions
- * (swap jobid and vpid) on little and big endian arch.
  */
-#if OPAL_ENABLE_HETEROGENEOUS_SUPPORT && !defined(WORDS_BIGENDIAN)
-struct orte_process_name_t {
-    orte_vpid_t vpid;       /**< Process id - equivalent to rank */
-    orte_jobid_t jobid;     /**< Job number */
-};
-#else
 struct orte_process_name_t {
     orte_jobid_t jobid;     /**< Job number */
     orte_vpid_t vpid;       /**< Process id - equivalent to rank */
 };
-#endif
 typedef struct orte_process_name_t orte_process_name_t;