Merge pull request #1139 from francois-wellenreiter/btl_portals4_mdbind

BTL portals4: remove useless PtlMDBind PtlMDRelease calls for RMDA ex…

opal/mca/btl/portals4/btl_portals4.c

@@ -500,7 +500,6 @@ mca_btl_portals4_alloc(struct mca_btl_base_module_t* btl_base,
             size : portals4_btl->super.btl_max_send_size ;
     }
 
-    frag->md_h = PTL_INVALID_HANDLE;
     frag->base.des_segment_count = 1;
     frag->base.des_flags = flags | MCA_BTL_DES_SEND_ALWAYS_CALLBACK;
     frag->base.order = MCA_BTL_NO_ORDER;

opal/mca/btl/portals4/btl_portals4_component.c

@@ -692,8 +692,8 @@ mca_btl_portals4_component_progress(void)
 
                     /* The distant PtlMEAppend is not finished (distant PTL_EVENT_LINK not received) */
                     /* Re-issue the PtlGet (see btl_portals4_rdma.c) */
-                    ret = PtlGet(frag->md_h,
-                                 0,
+                    ret = PtlGet(portals4_btl->send_md_h,
+                                 (ptl_size_t) frag->addr,
                                  frag->length,
                                  frag->peer_proc,
                                  portals4_btl->recv_idx,
@@ -704,8 +704,6 @@ mca_btl_portals4_component_progress(void)
                         opal_output_verbose(1, opal_btl_base_framework.framework_output,
                                             "%s:%d: Re-issued PtlGet failed: %d",
                                             __FILE__, __LINE__, ret);
-                        PtlMDRelease(frag->md_h);
-                        frag->md_h = PTL_INVALID_HANDLE;
                         return OPAL_ERROR;
                     }
 
@@ -724,8 +722,6 @@ mca_btl_portals4_component_progress(void)
                                  frag->rdma_cb.context,
                                  frag->rdma_cb.data,
                                  OPAL_SUCCESS);
-                    PtlMDRelease(frag->md_h);
-                    frag->md_h = PTL_INVALID_HANDLE;
 
                     OPAL_BTL_PORTALS4_FRAG_RETURN_USER(&portals4_btl->super, frag);
                     OPAL_THREAD_ADD32(&portals4_btl->portals_outstanding_ops, -1);

opal/mca/btl/portals4/btl_portals4_frag.h

@@ -45,10 +45,9 @@ struct mca_btl_portals4_frag_t {
     mca_btl_base_header_t hdr;
     /* handle to use for communication */
     ptl_handle_me_t me_h;
-    /* handle to use for communication */
-    ptl_handle_md_t md_h;
     /* size of the allocated memory region -- not the amount of data
        we need to send */
+    void *addr;
     size_t size;
     /* match bits for retransmit case */
     ptl_match_bits_t match_bits;

opal/mca/btl/portals4/btl_portals4_rdma.c

@@ -78,17 +78,6 @@ mca_btl_portals4_get(struct mca_btl_base_module_t* btl_base,
     frag->endpoint = btl_peer;
     frag->hdr.tag = MCA_BTL_TAG_MAX;
 
-    /* Bind the memory */
-    md.start = (void *)local_address;
-    md.length = size;
-    md.options = 0;
-    md.eq_handle = portals4_btl->recv_eq_h;
-    md.ct_handle = PTL_CT_NONE;
-
-    ret = PtlMDBind(portals4_btl->portals_ni_h,
-                    &md,
-                    &frag->md_h);
-
     if (OPAL_UNLIKELY(PTL_OK != ret)) {
         opal_output_verbose(1, opal_btl_base_framework.framework_output,
                             "%s:%d: PtlMDBind failed: %d",
@@ -97,15 +86,16 @@ mca_btl_portals4_get(struct mca_btl_base_module_t* btl_base,
     }
 
     frag->match_bits = remote_handle->key;
-    frag->length = md.length;
+    frag->addr = local_address;
+    frag->length = size;
     frag->peer_proc = btl_peer->ptl_proc;
 
     OPAL_OUTPUT_VERBOSE((90, opal_btl_base_framework.framework_output, "PtlGet start=%p length=%ld nid=%x pid=%x match_bits=%lx\n",
         md.start, md.length, btl_peer->ptl_proc.phys.nid, btl_peer->ptl_proc.phys.pid, frag->match_bits));
 
-    ret = PtlGet(frag->md_h,
-                 0,
-                 md.length,
+    ret = PtlGet(portals4_btl->send_md_h,
+                 (ptl_size_t) local_address,
+                 size,
                  btl_peer->ptl_proc,
                  portals4_btl->recv_idx,
                  frag->match_bits, /* match bits */
@@ -115,8 +105,6 @@ mca_btl_portals4_get(struct mca_btl_base_module_t* btl_base,
         opal_output_verbose(1, opal_btl_base_framework.framework_output,
                             "%s:%d: PtlGet failed: %d",
                             __FILE__, __LINE__, ret);
-        PtlMDRelease(frag->md_h);
-        frag->md_h = PTL_INVALID_HANDLE;
         return OPAL_ERROR;
     }
     OPAL_OUTPUT_VERBOSE((90, opal_btl_base_framework.framework_output, "SUCCESS: PtlGet start=%p length=%ld nid=%x pid=%x match_bits=%lx\n",