[mpich-commits] [mpich] MPICH primary repository branch, master, updated. v3.1.2-13-g494f597

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Tue Jul 29 10:41:38 CDT 2014


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       via  494f597b956c4a1557c986848e3b5eabb80faa32 (commit)
      from  a3fc775402614eda55b34b6d5db51d1555e36653 (commit)

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- Log -----------------------------------------------------------------
http://git.mpich.org/mpich.git/commitdiff/494f597b956c4a1557c986848e3b5eabb80faa32

commit 494f597b956c4a1557c986848e3b5eabb80faa32
Author: Antonio Pena Monferrer <apenya at mcs.anl.gov>
Date:   Mon Jul 28 12:45:37 2014 -0500

    Fixed datatype displacement use in portals4 netmod
    
    The current implementation was not taking into account the datatype offset.
    These changes mainly add the "dt_true_lb" field from the MPIDI_Datatype_get_info
    function to the user-specified buffer pointer.
    
    Signed-off-by: Ken Raffenetti <raffenet at mcs.anl.gov>

diff --git a/src/mpid/ch3/channels/nemesis/netmod/portals4/ptl_recv.c b/src/mpid/ch3/channels/nemesis/netmod/portals4/ptl_recv.c
index 6760165..712e006 100644
--- a/src/mpid/ch3/channels/nemesis/netmod/portals4/ptl_recv.c
+++ b/src/mpid/ch3/channels/nemesis/netmod/portals4/ptl_recv.c
@@ -91,12 +91,15 @@ static int handler_recv_dequeue_complete(const ptl_event_t *e)
         /* unpack the data from unexpected buffer */
         int is_contig;
         MPI_Aint last;
+        MPI_Aint dt_true_lb;
+        MPIDI_msg_sz_t data_sz ATTRIBUTE((unused));
+        MPID_Datatype *dt_ptr ATTRIBUTE((unused));
 
-        MPID_Datatype_is_contig(rreq->dev.datatype, &is_contig);
+        MPIDI_Datatype_get_info(rreq->dev.user_count, rreq->dev.datatype, is_contig, data_sz, dt_ptr, dt_true_lb);
         MPIU_DBG_MSG_D(CH3_CHANNEL, VERBOSE, "is_contig = %d", is_contig);
 
         if (is_contig) {
-            MPIU_Memcpy(rreq->dev.user_buf, e->start, e->mlength);
+            MPIU_Memcpy((char *)rreq->dev.user_buf + dt_true_lb, e->start, e->mlength);
         } else {
             last = e->mlength;
             MPID_Segment_unpack(rreq->dev.segment_ptr, 0, &last, e->start);
@@ -204,7 +207,7 @@ static int handler_recv_dequeue_large(const ptl_event_t *e)
     /* unpack data from unexpected buffer first */
     if (e->type == PTL_EVENT_PUT_OVERFLOW) {
         if (dt_contig) {
-            MPIU_Memcpy(rreq->dev.user_buf, e->start, e->mlength);
+            MPIU_Memcpy((char *)rreq->dev.user_buf + dt_true_lb, e->start, e->mlength);
         } else {
             rreq->dev.segment_first = 0;
             last = e->mlength;
@@ -227,10 +230,10 @@ static int handler_recv_dequeue_large(const ptl_event_t *e)
     if (dt_contig) {
         /* recv buffer is contig */
         REQ_PTL(rreq)->event_handler = handler_recv_complete;
-        ret = PtlGet(MPIDI_nem_ptl_global_md, (ptl_size_t)rreq->dev.user_buf + PTL_LARGE_THRESHOLD, data_sz - PTL_LARGE_THRESHOLD,
-                     vc_ptl->id, vc_ptl->ptg, e->match_bits, 0, rreq);
+        ret = PtlGet(MPIDI_nem_ptl_global_md, (ptl_size_t)((char *)rreq->dev.user_buf + dt_true_lb + PTL_LARGE_THRESHOLD),
+                     data_sz - PTL_LARGE_THRESHOLD, vc_ptl->id, vc_ptl->ptg, e->match_bits, 0, rreq);
         DBG_MSG_GET("global", data_sz - PTL_LARGE_THRESHOLD, vc->pg_rank, e->match_bits);
-        MPIU_DBG_MSG_P(CH3_CHANNEL, VERBOSE, "   buf=%p", (char *)rreq->dev.user_buf + PTL_LARGE_THRESHOLD);
+        MPIU_DBG_MSG_P(CH3_CHANNEL, VERBOSE, "   buf=%p", (char *)rreq->dev.user_buf + dt_true_lb + PTL_LARGE_THRESHOLD);
         MPIU_ERR_CHKANDJUMP1(ret, mpi_errno, MPI_ERR_OTHER, "**ptlget", "**ptlget %s", MPID_nem_ptl_strerror(ret));
         goto fn_exit;
     }
@@ -393,7 +396,7 @@ int MPID_nem_ptl_recv_posted(MPIDI_VC_t *vc, MPID_Request *rreq)
         if (dt_contig) {
             /* small contig message */
             MPIU_DBG_MSG(CH3_CHANNEL, VERBOSE, "Small contig message");
-            me.start = rreq->dev.user_buf;
+            me.start = (char *)rreq->dev.user_buf + dt_true_lb;
             me.length = data_sz;
             REQ_PTL(rreq)->event_handler = handler_recv_dequeue_complete;
         } else {
@@ -431,7 +434,7 @@ int MPID_nem_ptl_recv_posted(MPIDI_VC_t *vc, MPID_Request *rreq)
         if (dt_contig) {
             /* large contig message */
             MPIU_DBG_MSG(CH3_CHANNEL, VERBOSE, "Large contig message");
-            me.start = rreq->dev.user_buf;
+            me.start = (char *)rreq->dev.user_buf + dt_true_lb;
             me.length = PTL_LARGE_THRESHOLD;
             REQ_PTL(rreq)->event_handler = handler_recv_dequeue_large;
         } else {
diff --git a/src/mpid/ch3/channels/nemesis/netmod/portals4/ptl_send.c b/src/mpid/ch3/channels/nemesis/netmod/portals4/ptl_send.c
index ae2120a..a642fbd 100644
--- a/src/mpid/ch3/channels/nemesis/netmod/portals4/ptl_send.c
+++ b/src/mpid/ch3/channels/nemesis/netmod/portals4/ptl_send.c
@@ -207,7 +207,7 @@ static int send_msg(ptl_hdr_data_t ssend_flag, struct MPIDI_VC *vc, const void *
             MPIU_DBG_MSG(CH3_CHANNEL, VERBOSE, "Small contig message");
             REQ_PTL(sreq)->event_handler = handler_send_complete;
             MPIU_DBG_MSG_P(CH3_CHANNEL, VERBOSE, "&REQ_PTL(sreq)->event_handler = %p", &(REQ_PTL(sreq)->event_handler));
-            ret = PtlPut(MPIDI_nem_ptl_global_md, (ptl_size_t)buf, data_sz, PTL_ACK_REQ, vc_ptl->id, vc_ptl->pt,
+            ret = PtlPut(MPIDI_nem_ptl_global_md, (ptl_size_t)((char *)buf + dt_true_lb), data_sz, PTL_ACK_REQ, vc_ptl->id, vc_ptl->pt,
                          NPTL_MATCH(tag, comm->context_id + context_offset, comm->rank), 0, sreq,
                          NPTL_HEADER(ssend_flag, data_sz));
             MPIU_ERR_CHKANDJUMP1(ret, mpi_errno, MPI_ERR_OTHER, "**ptlput", "**ptlput %s", MPID_nem_ptl_strerror(ret));

-----------------------------------------------------------------------

Summary of changes:
 .../channels/nemesis/netmod/portals4/ptl_recv.c    |   19 +++++++++++--------
 .../channels/nemesis/netmod/portals4/ptl_send.c    |    2 +-
 2 files changed, 12 insertions(+), 9 deletions(-)


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