diff --git a/ompi/mca/pml/ucx/pml_ucx.c b/ompi/mca/pml/ucx/pml_ucx.c
index 780c61abca2..74d80b3eaaa 100644
--- a/ompi/mca/pml/ucx/pml_ucx.c
+++ b/ompi/mca/pml/ucx/pml_ucx.c
@@ -156,14 +156,18 @@ int mca_pml_ucx_close(void)
 
 int mca_pml_ucx_init(void)
 {
+    ucp_worker_params_t params;
     ucs_status_t status;
     int rc;
 
     PML_UCX_VERBOSE(1, "mca_pml_ucx_init");
 
     /* TODO check MPI thread mode */
-    status = ucp_worker_create(ompi_pml_ucx.ucp_context, UCS_THREAD_MODE_SINGLE,
-                              &ompi_pml_ucx.ucp_worker);
+    params.field_mask  = UCP_WORKER_PARAM_FIELD_THREAD_MODE;
+    params.thread_mode = UCS_THREAD_MODE_SINGLE;
+
+    status = ucp_worker_create(ompi_pml_ucx.ucp_context, &params,
+                               &ompi_pml_ucx.ucp_worker);
     if (UCS_OK != status) {
         return OMPI_ERROR;
     }
@@ -212,6 +216,7 @@ int mca_pml_ucx_cleanup(void)
 
 ucp_ep_h mca_pml_ucx_add_proc(ompi_communicator_t *comm, int dst)
 {
+    ucp_ep_params_t ep_params;
     ucp_address_t *address;
     ucs_status_t status;
     size_t addrlen;
@@ -235,7 +240,11 @@ ucp_ep_h mca_pml_ucx_add_proc(ompi_communicator_t *comm, int dst)
     }
 
     PML_UCX_VERBOSE(2, "connecting to proc. %d", proc_peer->super.proc_name.vpid);
-    status = ucp_ep_create(ompi_pml_ucx.ucp_worker, address, &ep);
+
+    ep_params.field_mask = UCP_EP_PARAM_FIELD_REMOTE_ADDRESS;
+    ep_params.address    = address;
+
+    status = ucp_ep_create(ompi_pml_ucx.ucp_worker, &ep_params, &ep);
     free(address);
     if (UCS_OK != status) {
         PML_UCX_ERROR("Failed to connect to proc: %d, %s", proc_peer->super.proc_name.vpid,
@@ -250,6 +259,7 @@ ucp_ep_h mca_pml_ucx_add_proc(ompi_communicator_t *comm, int dst)
 
 int mca_pml_ucx_add_procs(struct ompi_proc_t **procs, size_t nprocs)
 {
+    ucp_ep_params_t ep_params;
     ucp_address_t *address;
     ucs_status_t status;
     size_t addrlen;
@@ -276,7 +286,11 @@ int mca_pml_ucx_add_procs(struct ompi_proc_t **procs, size_t nprocs)
         }
 
         PML_UCX_VERBOSE(2, "connecting to proc. %d", procs[i]->super.proc_name.vpid);
-        status = ucp_ep_create(ompi_pml_ucx.ucp_worker, address, &ep);
+
+        ep_params.field_mask = UCP_EP_PARAM_FIELD_REMOTE_ADDRESS;
+        ep_params.address    = address;
+
+        status = ucp_ep_create(ompi_pml_ucx.ucp_worker, &ep_params, &ep);
         free(address);
 
         if (UCS_OK != status) {
diff --git a/oshmem/mca/spml/ucx/spml_ucx.c b/oshmem/mca/spml/ucx/spml_ucx.c
index 1d8b1845427..4e93ee0fce0 100644
--- a/oshmem/mca/spml/ucx/spml_ucx.c
+++ b/oshmem/mca/spml/ucx/spml_ucx.c
@@ -184,6 +184,7 @@ int mca_spml_ucx_add_procs(ompi_proc_t** procs, size_t nprocs)
     size_t wk_addr_len;
     int *wk_roffs, *wk_rsizes;
     char *wk_raddrs;
+    ucp_ep_params_t ep_params;
 
 
     mca_spml_ucx.ucp_peers = (ucp_peer_t *) calloc(nprocs, sizeof(*(mca_spml_ucx.ucp_peers)));
@@ -210,9 +211,13 @@ int mca_spml_ucx_add_procs(ompi_proc_t** procs, size_t nprocs)
         i = (my_rank + n) % nprocs;
         //if (i == my_rank) continue;
         dump_address(i, (char *)(wk_raddrs + wk_roffs[i]), wk_rsizes[i]);
+
+        ep_params.field_mask = UCP_EP_PARAM_FIELD_REMOTE_ADDRESS;
+        ep_params.address    = (ucp_address_t *)(wk_raddrs + wk_roffs[i]);
+
         err = ucp_ep_create(mca_spml_ucx.ucp_worker, 
-                (ucp_address_t *)(wk_raddrs + wk_roffs[i]),
-                &mca_spml_ucx.ucp_peers[i].ucp_conn);
+                            &ep_params,
+                            &mca_spml_ucx.ucp_peers[i].ucp_conn);
         if (UCS_OK != err) {
             SPML_ERROR("ucp_ep_create failed!!!\n");
             goto error2;
@@ -298,6 +303,8 @@ sshmem_mkey_t *mca_spml_ucx_register(void* addr,
     ucs_status_t err;
     spml_ucx_mkey_t   *ucx_mkey;
     size_t len;
+    int my_pe = oshmem_my_proc_id();
+    ucp_mem_map_params_t mem_map_params;
 
     *count = 0;
     mkeys = (sshmem_mkey_t *) calloc(1, sizeof(*mkeys));
@@ -311,8 +318,13 @@ sshmem_mkey_t *mca_spml_ucx_register(void* addr,
     }
 
     mkeys[0].spml_context = ucx_mkey;
-    err = ucp_mem_map(mca_spml_ucx.ucp_context, 
-            &addr, size, 0, &ucx_mkey->mem_h);
+
+    mem_map_params.field_mask = UCP_MEM_MAP_PARAM_FIELD_ADDRESS |
+                                UCP_MEM_MAP_PARAM_FIELD_LENGTH; 
+    mem_map_params.address    = addr;
+    mem_map_params.length     = size;
+
+    err = ucp_mem_map(mca_spml_ucx.ucp_context, &mem_map_params, &ucx_mkey->mem_h);
     if (UCS_OK != err) {
         goto error_out1;
     }
@@ -338,7 +350,7 @@ sshmem_mkey_t *mca_spml_ucx_register(void* addr,
     }
 
     mkeys[0].len     = len;
-    mkeys[0].va_base = addr;
+    mkeys[0].va_base = mem_map_params.address;
     *count = 1;
     return mkeys;
 
diff --git a/oshmem/mca/spml/ucx/spml_ucx_component.c b/oshmem/mca/spml/ucx/spml_ucx_component.c
index 22fae41e295..7491238850a 100644
--- a/oshmem/mca/spml/ucx/spml_ucx_component.c
+++ b/oshmem/mca/spml/ucx/spml_ucx_component.c
@@ -137,9 +137,13 @@ static int mca_spml_ucx_component_close(void)
 
 static int spml_ucx_init(void)
 {
+    ucp_worker_params_t params;
     ucs_status_t err;
 
-    err = ucp_worker_create(mca_spml_ucx.ucp_context, UCS_THREAD_MODE_SINGLE,
+    params.field_mask  = UCP_WORKER_PARAM_FIELD_THREAD_MODE;
+    params.thread_mode = UCS_THREAD_MODE_SINGLE;
+
+    err = ucp_worker_create(mca_spml_ucx.ucp_context, &params,
                             &mca_spml_ucx.ucp_worker);
     if (UCS_OK != err) {
         return OSHMEM_ERROR;