diff --git a/config/ompi_check_ucx.m4 b/config/ompi_check_ucx.m4
index 044b599dc3..42e53f9ce8 100644
--- a/config/ompi_check_ucx.m4
+++ b/config/ompi_check_ucx.m4
@@ -135,9 +135,11 @@ AC_DEFUN([OMPI_CHECK_UCX],[
           [$1_CPPFLAGS="[$]$1_CPPFLAGS $ompi_check_ucx_CPPFLAGS"
            $1_LDFLAGS="[$]$1_LDFLAGS $ompi_check_ucx_LDFLAGS"
            $1_LIBS="[$]$1_LIBS $ompi_check_ucx_LIBS"
+           AC_DEFINE([HAVE_UCX], [1], [have ucx])
            $2],
           [AS_IF([test ! -z "$with_ucx" && test "$with_ucx" != "no"],
                  [AC_MSG_ERROR([UCX support requested but not found.  Aborting])])
+           AC_DEFINE([HAVE_UCX], [0], [have ucx])
            $3])
 
     OPAL_VAR_SCOPE_POP
diff --git a/opal/mca/btl/openib/btl_openib.c b/opal/mca/btl/openib/btl_openib.c
index c2686a0676..f9ba3a3de6 100644
--- a/opal/mca/btl/openib/btl_openib.c
+++ b/opal/mca/btl/openib/btl_openib.c
@@ -22,6 +22,7 @@
  * Copyright (c) 2014-2018 Research Organization for Information Science
  *                         and Technology (RIST).  All rights reserved.
  * Copyright (c) 2014      Bull SAS.  All rights reserved
+ * Copyrigth (c) 2019      Triad National Security, LLC. All rights reserved.
  * $COPYRIGHT$
  *
  * Additional copyrights may follow
@@ -1040,15 +1041,6 @@ int mca_btl_openib_add_procs(
     int btl_rank = 0;
     volatile mca_btl_base_endpoint_t* endpoint;
 
-
-    if (! openib_btl->allowed) {
-        opal_bitmap_clear_all_bits(reachable);
-        opal_show_help("help-mpi-btl-openib.txt", "ib port not selected",
-                       true, opal_process_info.nodename,
-                       openib_btl->device_name, openib_btl->port_num);
-        return OPAL_SUCCESS;
-    }
-
     btl_rank = get_openib_btl_params(openib_btl, &lcl_subnet_id_port_cnt);
     if( 0 > btl_rank ){
         return OPAL_ERR_NOT_FOUND;
@@ -1648,83 +1640,82 @@ static int mca_btl_openib_finalize_resources(struct mca_btl_base_module_t* btl)
         return OPAL_SUCCESS;
     }
 
-    if (openib_btl->allowed) {
-        /* Release all QPs */
-        if (NULL != openib_btl->device->endpoints) {
-            for (ep_index=0;
-                 ep_index < opal_pointer_array_get_size(openib_btl->device->endpoints);
-                 ep_index++) {
-                endpoint=(mca_btl_openib_endpoint_t *)opal_pointer_array_get_item(openib_btl->device->endpoints,
+    /* Release all QPs */
+    if (NULL != openib_btl->device->endpoints) {
+        for (ep_index=0;
+             ep_index < opal_pointer_array_get_size(openib_btl->device->endpoints);
+             ep_index++) {
+
+            endpoint=(mca_btl_openib_endpoint_t *)opal_pointer_array_get_item(openib_btl->device->endpoints,
                                                                               ep_index);
-                if(!endpoint) {
-                    BTL_VERBOSE(("In finalize, got another null endpoint"));
-                    continue;
-                }
-                if(endpoint->endpoint_btl != openib_btl) {
-                    continue;
-                }
-                for(i = 0; i < openib_btl->device->eager_rdma_buffers_count; i++) {
-                    if(openib_btl->device->eager_rdma_buffers[i] == endpoint) {
-                        openib_btl->device->eager_rdma_buffers[i] = NULL;
-                        OBJ_RELEASE(endpoint);
-                    }
-                }
-                opal_pointer_array_set_item(openib_btl->device->endpoints,
-                                            ep_index, NULL);
-                assert(((opal_object_t*)endpoint)->obj_reference_count == 1);
-                OBJ_RELEASE(endpoint);
+            if(!endpoint) {
+                BTL_VERBOSE(("In finalize, got another null endpoint"));
+                continue;
             }
-        }
-
-        /* Release SRQ resources */
-        for(qp = 0; qp < mca_btl_openib_component.num_qps; qp++) {
-            if(!BTL_OPENIB_QP_TYPE_PP(qp)) {
-                MCA_BTL_OPENIB_CLEAN_PENDING_FRAGS(
-                        &openib_btl->qps[qp].u.srq_qp.pending_frags[0]);
-                MCA_BTL_OPENIB_CLEAN_PENDING_FRAGS(
-                        &openib_btl->qps[qp].u.srq_qp.pending_frags[1]);
-                if (NULL != openib_btl->qps[qp].u.srq_qp.srq) {
-                    opal_mutex_t *lock =
-                                 &mca_btl_openib_component.srq_manager.lock;
-
-                    opal_hash_table_t *srq_addr_table =
-                                &mca_btl_openib_component.srq_manager.srq_addr_table;
-
-                    opal_mutex_lock(lock);
-                    if (OPAL_SUCCESS !=
-                            opal_hash_table_remove_value_ptr(srq_addr_table,
-                                        &openib_btl->qps[qp].u.srq_qp.srq,
-                                        sizeof(struct ibv_srq *))) {
-                        BTL_VERBOSE(("Failed to remove SRQ  %d entry from hash table.", qp));
-                        rc = OPAL_ERROR;
-                    }
-                    opal_mutex_unlock(lock);
-                    if (0 != ibv_destroy_srq(openib_btl->qps[qp].u.srq_qp.srq)) {
-                        BTL_VERBOSE(("Failed to close SRQ %d", qp));
-                        rc = OPAL_ERROR;
-                    }
+            if(endpoint->endpoint_btl != openib_btl) {
+                continue;
+            }
+            for(i = 0; i < openib_btl->device->eager_rdma_buffers_count; i++) {
+                if(openib_btl->device->eager_rdma_buffers[i] == endpoint) {
+                    openib_btl->device->eager_rdma_buffers[i] = NULL;
+                    OBJ_RELEASE(endpoint);
                 }
-
-                OBJ_DESTRUCT(&openib_btl->qps[qp].u.srq_qp.pending_frags[0]);
-                OBJ_DESTRUCT(&openib_btl->qps[qp].u.srq_qp.pending_frags[1]);
             }
+            opal_pointer_array_set_item(openib_btl->device->endpoints,
+                                        ep_index, NULL);
+            assert(((opal_object_t*)endpoint)->obj_reference_count == 1);
+            OBJ_RELEASE(endpoint);
         }
+    }
 
-        /* Finalize the CPC modules on this openib module */
-        for (i = 0; i < openib_btl->num_cpcs; ++i) {
-            if (NULL != openib_btl->cpcs[i]->cbm_finalize) {
-                openib_btl->cpcs[i]->cbm_finalize(openib_btl, openib_btl->cpcs[i]);
+    /* Release SRQ resources */
+    for(qp = 0; qp < mca_btl_openib_component.num_qps; qp++) {
+        if(!BTL_OPENIB_QP_TYPE_PP(qp)) {
+            MCA_BTL_OPENIB_CLEAN_PENDING_FRAGS(
+                    &openib_btl->qps[qp].u.srq_qp.pending_frags[0]);
+            MCA_BTL_OPENIB_CLEAN_PENDING_FRAGS(
+                    &openib_btl->qps[qp].u.srq_qp.pending_frags[1]);
+            if (NULL != openib_btl->qps[qp].u.srq_qp.srq) {
+                opal_mutex_t *lock =
+                             &mca_btl_openib_component.srq_manager.lock;
+
+                opal_hash_table_t *srq_addr_table =
+                            &mca_btl_openib_component.srq_manager.srq_addr_table;
+
+                opal_mutex_lock(lock);
+                if (OPAL_SUCCESS !=
+                        opal_hash_table_remove_value_ptr(srq_addr_table,
+                                    &openib_btl->qps[qp].u.srq_qp.srq,
+                                    sizeof(struct ibv_srq *))) {
+                    BTL_VERBOSE(("Failed to remove SRQ  %d entry from hash table.", qp));
+                    rc = OPAL_ERROR;
+                }
+                opal_mutex_unlock(lock);
+                if (0 != ibv_destroy_srq(openib_btl->qps[qp].u.srq_qp.srq)) {
+                    BTL_VERBOSE(("Failed to close SRQ %d", qp));
+                    rc = OPAL_ERROR;
+                }
             }
-            free(openib_btl->cpcs[i]);
-        }
-        free(openib_btl->cpcs);
 
-        /* Release device if there are no more users */
-        if(!(--openib_btl->device->allowed_btls)) {
-            OBJ_RELEASE(openib_btl->device);
+            OBJ_DESTRUCT(&openib_btl->qps[qp].u.srq_qp.pending_frags[0]);
+            OBJ_DESTRUCT(&openib_btl->qps[qp].u.srq_qp.pending_frags[1]);
         }
     }
 
+    /* Finalize the CPC modules on this openib module */
+    for (i = 0; i < openib_btl->num_cpcs; ++i) {
+        if (NULL != openib_btl->cpcs[i]->cbm_finalize) {
+            openib_btl->cpcs[i]->cbm_finalize(openib_btl, openib_btl->cpcs[i]);
+        }
+        free(openib_btl->cpcs[i]);
+    }
+    free(openib_btl->cpcs);
+
+    /* Release device if there are no more users */
+    if(!(--openib_btl->device->allowed_btls)) {
+        OBJ_RELEASE(openib_btl->device);
+    }
+
     if (NULL != openib_btl->qps) {
         free(openib_btl->qps);
     }
diff --git a/opal/mca/btl/openib/btl_openib.h b/opal/mca/btl/openib/btl_openib.h
index 0b85bfb566..3ffc0feffc 100644
--- a/opal/mca/btl/openib/btl_openib.h
+++ b/opal/mca/btl/openib/btl_openib.h
@@ -20,6 +20,8 @@
  * Copyright (c) 2014      Bull SAS.  All rights reserved.
  * Copyright (c) 2015-2018 Research Organization for Information Science
  *                         and Technology (RIST).  All rights reserved.
+ * Copyrigth (c) 2019      Triad National Security, LLC. All rights reserved.
+ *
  * $COPYRIGHT$
  *
  * Additional copyrights may follow
@@ -506,8 +508,6 @@ struct mca_btl_openib_module_t {
     int local_procs;                   /** number of local procs */
 
     bool atomic_ops_be;                /** atomic result is big endian */
-
-    bool allowed;                      /** is this port allowed */
 };
 typedef struct mca_btl_openib_module_t mca_btl_openib_module_t;
 
diff --git a/opal/mca/btl/openib/btl_openib_component.c b/opal/mca/btl/openib/btl_openib_component.c
index fcc0ac5697..d93178fb53 100644
--- a/opal/mca/btl/openib/btl_openib_component.c
+++ b/opal/mca/btl/openib/btl_openib_component.c
@@ -22,6 +22,7 @@
  * Copyright (c) 2014-2018 Research Organization for Information Science
  *                         and Technology (RIST).  All rights reserved.
  * Copyright (c) 2014      Bull SAS.  All rights reserved.
+ * Copyrigth (c) 2019      Triad National Security, LLC. All rights reserved.
  * $COPYRIGHT$
  *
  * Additional copyrights may follow
@@ -278,9 +279,6 @@ static int btl_openib_modex_send(void)
          );
     /* For each module, add in the size of the per-CPC data */
     for (i = 0; i < mca_btl_openib_component.ib_num_btls; i++) {
-        if (! mca_btl_openib_component.openib_btls[i]->allowed) {
-            continue;
-        }
         for (j = 0;
              j < mca_btl_openib_component.openib_btls[i]->num_cpcs;
              ++j) {
@@ -309,9 +307,6 @@ static int btl_openib_modex_send(void)
     /* Pack each of the modules */
     for (i = 0; i < mca_btl_openib_component.ib_num_btls; i++) {
 
-        if (! mca_btl_openib_component.openib_btls[i]->allowed) {
-            continue;
-        }
         /* Pack the modex common message struct.  */
         size = modex_message_size;
 
@@ -633,38 +628,26 @@ static int init_one_port(opal_list_t *btl_list, mca_btl_openib_device_t *device,
  * unless the user specifically requested to override this
  * policy.  For ancient OFED, only allow if user has set
  * the MCA parameter.
+ *
+ * We emit a help message if Open MPI was configured without
+ * UCX support if the port is configured to use infiniband for link
+ * layer. If UCX support is available, don't emit help message
+ * since UCX PML has higher priority than OB1 and this BTL will
+ * not be used.
  */
-    if (! mca_btl_openib_component.allow_ib
+    if (false == mca_btl_openib_component.allow_ib
 #if HAVE_DECL_IBV_LINK_LAYER_ETHERNET
         && IBV_LINK_LAYER_INFINIBAND == ib_port_attr->link_layer
 #endif
        ) {
-        openib_btl = (mca_btl_openib_module_t *) calloc(1, sizeof(mca_btl_openib_module_t));
-        if(NULL == openib_btl) {
-            BTL_ERROR(("Failed malloc: %s:%d", __FILE__, __LINE__));
-            return OPAL_ERR_OUT_OF_RESOURCE;
-        }
-        memcpy(openib_btl, &mca_btl_openib_module,
-                sizeof(mca_btl_openib_module));
-        ib_selected = OBJ_NEW(mca_btl_base_selected_module_t);
-        ib_selected->btl_module = (mca_btl_base_module_t*) openib_btl;
-        openib_btl->port_num = (uint8_t) port_num;
-        openib_btl->allowed = false;
-        openib_btl->device = NULL;
-        openib_btl->device_name = strdup(ibv_get_device_name(device->ib_dev));
-        OBJ_CONSTRUCT(&openib_btl->ib_lock, opal_mutex_t);
-        opal_list_append(btl_list, (opal_list_item_t*) ib_selected);
-        opal_pointer_array_add(device->device_btls, (void*) openib_btl);
-        ++device->btls;
-        ++mca_btl_openib_component.ib_num_btls;
-        if (-1 != mca_btl_openib_component.ib_max_btls &&
-            mca_btl_openib_component.ib_num_btls >=
-            mca_btl_openib_component.ib_max_btls) {
-            return OPAL_ERR_VALUE_OUT_OF_BOUNDS;
-        }
-        return OPAL_SUCCESS;
-    }
-
+#if !HAVE_UCX
+        opal_show_help("help-mpi-btl-openib.txt", "ib port not selected",
+                       true, opal_process_info.nodename,
+                       ibv_get_device_name(device->ib_dev), 
+                       port_num);
+#endif
+        return OPAL_ERR_NOT_FOUND;
+     }
 
     /* Ensure that the requested GID index (via the
        btl_openib_gid_index MCA param) is within the GID table
@@ -901,8 +884,6 @@ static int init_one_port(opal_list_t *btl_list, mca_btl_openib_device_t *device,
                 }
             }
 
-            openib_btl->allowed = true;
-
             opal_list_append(btl_list, (opal_list_item_t*) ib_selected);
             opal_pointer_array_add(device->device_btls, (void*) openib_btl);
             ++device->btls;
@@ -2999,29 +2980,27 @@ btl_openib_component_init(int *num_btl_modules,
         ib_selected = (mca_btl_base_selected_module_t*)item;
         openib_btl = (mca_btl_openib_module_t*)ib_selected->btl_module;
 
-        if (openib_btl->allowed) {
-            /* Search for a CPC that can handle this port */
-            ret = opal_btl_openib_connect_base_select_for_local_port(openib_btl);
-            /* If we get NOT_SUPPORTED, then no CPC was found for this
-               port.  But that's not a fatal error -- just keep going;
-               let's see if we find any usable openib modules or not. */
-            if (OPAL_ERR_NOT_SUPPORTED == ret) {
-                continue;
-            } else if (OPAL_SUCCESS != ret) {
-                /* All others *are* fatal.  Note that we already did a
-                   show_help in the lower layer */
-                goto no_btls;
-            }
+        /* Search for a CPC that can handle this port */
+        ret = opal_btl_openib_connect_base_select_for_local_port(openib_btl);
+        /* If we get NOT_SUPPORTED, then no CPC was found for this
+           port.  But that's not a fatal error -- just keep going;
+           let's see if we find any usable openib modules or not. */
+        if (OPAL_ERR_NOT_SUPPORTED == ret) {
+            continue;
+        } else if (OPAL_SUCCESS != ret) {
+            /* All others *are* fatal.  Note that we already did a
+               show_help in the lower layer */
+            goto no_btls;
+        }
 
-            if (mca_btl_openib_component.max_hw_msg_size > 0 &&
-                (uint32_t)mca_btl_openib_component.max_hw_msg_size > openib_btl->ib_port_attr.max_msg_sz) {
-                BTL_ERROR(("max_hw_msg_size (%" PRIu32 ") is larger than hw max message size (%" PRIu32 ")",
-                    mca_btl_openib_component.max_hw_msg_size, openib_btl->ib_port_attr.max_msg_sz));
-            }
+        if (mca_btl_openib_component.max_hw_msg_size > 0 &&
+            (uint32_t)mca_btl_openib_component.max_hw_msg_size > openib_btl->ib_port_attr.max_msg_sz) {
+            BTL_ERROR(("max_hw_msg_size (%" PRIu32 ") is larger than hw max message size (%" PRIu32 ")",
+                mca_btl_openib_component.max_hw_msg_size, openib_btl->ib_port_attr.max_msg_sz));
+        }
 
-            if (finish_btl_init(openib_btl) != OPAL_SUCCESS) {
-                goto no_btls;
-            }
+        if (finish_btl_init(openib_btl) != OPAL_SUCCESS) {
+            goto no_btls;
         }
 
         mca_btl_openib_component.openib_btls[i] = openib_btl;