ch3u_rma_sync.c 177 KB
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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
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/*
 *  (C) 2001 by Argonne National Laboratory.
 *      See COPYRIGHT in top-level directory.
 */

#include "mpidimpl.h"
#include "mpidrma.h"

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#ifdef USE_MPIU_INSTR
MPIU_INSTR_DURATION_DECL(winfence_clearlock);
MPIU_INSTR_DURATION_DECL(winfence_rs);
MPIU_INSTR_DURATION_DECL(winfence_issue);
MPIU_INSTR_DURATION_DECL(winfence_complete);
MPIU_INSTR_DURATION_DECL(winfence_wait);
MPIU_INSTR_DURATION_DECL(winfence_block);
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MPIU_INSTR_COUNTER_DECL(winfence_reqs);
MPIU_INSTR_COUNTER_DECL(winunlock_reqs);
MPIU_INSTR_COUNTER_DECL(wincomplete_reqs);
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MPIU_INSTR_DURATION_DECL(winpost_clearlock);
MPIU_INSTR_DURATION_DECL(winpost_sendsync);
MPIU_INSTR_DURATION_DECL(winstart_clearlock);
MPIU_INSTR_DURATION_DECL(wincomplete_issue);
MPIU_INSTR_DURATION_DECL(wincomplete_complete);
MPIU_INSTR_DURATION_DECL(wincomplete_recvsync);
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MPIU_INSTR_DURATION_DECL(wincomplete_block);
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MPIU_INSTR_DURATION_DECL(winwait_wait);
MPIU_INSTR_DURATION_DECL(winlock_getlocallock);
MPIU_INSTR_DURATION_DECL(winunlock_getlock);
MPIU_INSTR_DURATION_DECL(winunlock_issue);
MPIU_INSTR_DURATION_DECL(winunlock_complete);
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MPIU_INSTR_DURATION_DECL(winunlock_block);
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MPIU_INSTR_DURATION_DECL(lockqueue_alloc);
MPIU_INSTR_DURATION_DECL(rmapkt_acc);
MPIU_INSTR_DURATION_DECL(rmapkt_acc_predef);
MPIU_INSTR_DURATION_DECL(rmapkt_acc_immed);
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MPIU_INSTR_DURATION_DECL(rmapkt_acc_immed_op);
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MPIU_INSTR_DURATION_DECL(rmapkt_cas);
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MPIU_INSTR_DURATION_DECL(rmapkt_fop);
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MPIU_INSTR_DURATION_DECL(rmapkt_get_accum);
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MPIU_INSTR_DURATION_EXTERN_DECL(rmaqueue_alloc);
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MPIU_INSTR_DURATION_EXTERN_DECL(rmaqueue_set);
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void MPIDI_CH3_RMA_InitInstr(void);

void MPIDI_CH3_RMA_InitInstr(void)
{
    MPIU_INSTR_DURATION_INIT(lockqueue_alloc,0,"Allocate Lock Queue element");
    MPIU_INSTR_DURATION_INIT(winfence_clearlock,1,"WIN_FENCE:Clear prior lock");
    MPIU_INSTR_DURATION_INIT(winfence_rs,0,"WIN_FENCE:ReduceScatterBlock");
    MPIU_INSTR_DURATION_INIT(winfence_issue,2,"WIN_FENCE:Issue RMA ops");
    MPIU_INSTR_DURATION_INIT(winfence_complete,1,"WIN_FENCE:Complete RMA ops");
    MPIU_INSTR_DURATION_INIT(winfence_wait,1,"WIN_FENCE:Wait for ops from other processes");
    MPIU_INSTR_DURATION_INIT(winfence_block,0,"WIN_FENCE:Wait for any progress");
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    MPIU_INSTR_COUNTER_INIT(winfence_reqs,"WIN_FENCE:Pending requests");
    MPIU_INSTR_COUNTER_INIT(winunlock_reqs,"WIN_UNLOCK:Pending requests");
    MPIU_INSTR_COUNTER_INIT(wincomplete_reqs,"WIN_COMPLETE:Pending requests");
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    MPIU_INSTR_DURATION_INIT(winpost_clearlock,1,"WIN_POST:Clear prior lock");
    MPIU_INSTR_DURATION_INIT(winpost_sendsync,1,"WIN_POST:Senc sync messages");
    MPIU_INSTR_DURATION_INIT(winstart_clearlock,1,"WIN_START:Clear prior lock");
    MPIU_INSTR_DURATION_INIT(wincomplete_recvsync,1,"WIN_COMPLETE:Recv sync messages");
    MPIU_INSTR_DURATION_INIT(wincomplete_issue,2,"WIN_COMPLETE:Issue RMA ops");
    MPIU_INSTR_DURATION_INIT(wincomplete_complete,1,"WIN_COMPLETE:Complete RMA ops");
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    MPIU_INSTR_DURATION_INIT(wincomplete_block,0,"WIN_COMPLETE:Wait for any progress");
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    MPIU_INSTR_DURATION_INIT(winwait_wait,1,"WIN_WAIT:Wait for ops from other processes");
    MPIU_INSTR_DURATION_INIT(winlock_getlocallock,0,"WIN_LOCK:Get local lock");
    MPIU_INSTR_DURATION_INIT(winunlock_issue,2,"WIN_UNLOCK:Issue RMA ops");
    MPIU_INSTR_DURATION_INIT(winunlock_complete,1,"WIN_UNLOCK:Complete RMA ops");
    MPIU_INSTR_DURATION_INIT(winunlock_getlock,0,"WIN_UNLOCK:Acquire lock");
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    MPIU_INSTR_DURATION_INIT(winunlock_block,0,"WIN_UNLOCK:Wait for any progress");
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    MPIU_INSTR_DURATION_INIT(rmapkt_acc,0,"RMA:PKTHANDLER for Accumulate");
    MPIU_INSTR_DURATION_INIT(rmapkt_acc_predef,0,"RMA:PKTHANDLER for Accumulate: predef dtype");
    MPIU_INSTR_DURATION_INIT(rmapkt_acc_immed,0,"RMA:PKTHANDLER for Accum immed");
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    MPIU_INSTR_DURATION_INIT(rmapkt_acc_immed_op,0,"RMA:PKTHANDLER for Accum immed operation");
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    MPIU_INSTR_DURATION_INIT(rmapkt_cas,0,"RMA:PKTHANDLER for Compare-and-swap");
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    MPIU_INSTR_DURATION_INIT(rmapkt_fop,0,"RMA:PKTHANDLER for Fetch-and-op");
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    MPIU_INSTR_DURATION_INIT(rmapkt_get_accum,0,"RMA:PKTHANDLER for Get-Accumulate");
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}
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/* These are used to use a common routine to complete lists of RMA 
   operations with a single routine, while collecting data that 
   distinguishes between different synchronization modes.  This is not
   thread-safe; the best choice for thread-safety is to eliminate this
   ability to discriminate between the different types of RMA synchronization.
*/
static MPIU_INSTR_Duration_count *list_complete;  /* outer */
static MPIU_INSTR_Duration_count *list_block;     /* Inner; while waiting */

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#endif

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/*
 * These routines provide a default implementation of the MPI RMA operations
 * in terms of the low-level, two-sided channel operations.  A channel
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 * may override these functions, on a per-window basis, by overriding
 * the MPID functions in the RMAFns section of MPID_Win object.
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 */

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#define SYNC_POST_TAG 100

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static int MPIDI_CH3I_Send_lock_msg(int dest, int lock_type, MPID_Win *win_ptr);
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static int MPIDI_CH3I_Send_unlock_msg(int dest, MPID_Win *win_ptr);
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static int MPIDI_CH3I_Send_flush_msg(int dest, MPID_Win *win_ptr);
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static int MPIDI_CH3I_Wait_for_lock_granted(MPID_Win *win_ptr, int target_rank);
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static int MPIDI_CH3I_Send_rma_msg(MPIDI_RMA_Op_t * rma_op, MPID_Win * win_ptr,
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				   MPI_Win source_win_handle, 
				   MPI_Win target_win_handle, 
				   MPIDI_RMA_dtype_info * dtype_info, 
				   void ** dataloop, MPID_Request ** request);
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static int MPIDI_CH3I_Recv_rma_msg(MPIDI_RMA_Op_t * rma_op, MPID_Win * win_ptr,
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				   MPI_Win source_win_handle, 
				   MPI_Win target_win_handle, 
				   MPIDI_RMA_dtype_info * dtype_info, 
				   void ** dataloop, MPID_Request ** request); 
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static int MPIDI_CH3I_Send_contig_acc_msg(MPIDI_RMA_Op_t *, MPID_Win *,
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					  MPI_Win, MPI_Win, MPID_Request ** );
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static int MPIDI_CH3I_Send_immed_rmw_msg(MPIDI_RMA_Op_t *, MPID_Win *,
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                                         MPI_Win, MPI_Win, MPID_Request ** );
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static int MPIDI_CH3I_Do_passive_target_rma(MPID_Win *win_ptr, int target_rank,
                                            int *wait_for_rma_done_pkt,
                                            int unlock_target);
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static int MPIDI_CH3I_Send_lock_put_or_acc(MPID_Win *, int);
static int MPIDI_CH3I_Send_lock_get(MPID_Win *, int);
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static int MPIDI_CH3I_RMAListComplete(MPID_Win *win_ptr,
                                      MPIDI_RMA_Ops_list_t *ops_list);
static int MPIDI_CH3I_RMAListPartialComplete(MPID_Win *win_ptr,
                                             MPIDI_RMA_Ops_list_t *ops_list,
                                             MPIDI_RMA_Op_t *last_elm, int *nDone);
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static int create_datatype(const MPIDI_RMA_dtype_info *dtype_info,
                           const void *dataloop, MPI_Aint dataloop_sz,
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                           const void *o_addr, int o_count,
			   MPI_Datatype o_datatype,
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                           MPID_Datatype **combined_dtp);
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/* Issue an RMA operation -- Before calling this macro, you must define the
 * MPIDI_CH3I_TRACK_RMA_WRITE helper macro.  This macro defines any extra action
 * that should be taken when a write (put/acc) operation is encountered. */
#define MPIDI_CH3I_ISSUE_RMA_OP(op_ptr_, win_ptr_, source_win_handle_, target_win_handle_,err_) \
    do {                                                                                        \
    switch ((op_ptr_)->type)                                                                    \
    {                                                                                           \
        case (MPIDI_RMA_PUT):                                                                   \
        case (MPIDI_RMA_ACCUMULATE):                                                            \
            MPIDI_CH3I_TRACK_RMA_WRITE(op_ptr_, win_ptr_);                                      \
            (err_) = MPIDI_CH3I_Send_rma_msg((op_ptr_), (win_ptr_), (source_win_handle_),       \
                                                (target_win_handle_), &(op_ptr_)->dtype_info,   \
                                                &(op_ptr_)->dataloop, &(op_ptr_)->request);     \
            if (err_) { MPIU_ERR_POP(err_); }                                                   \
            break;                                                                              \
        case (MPIDI_RMA_GET_ACCUMULATE):                                                        \
            if ((op_ptr_)->op == MPI_NO_OP) {                                                   \
                /* Note: Origin arguments are ignored for NO_OP, so we don't                    \
                 * need to release a ref to the origin datatype. */                             \
                                                                                                \
                /* Convert the GAcc to a Get */                                                 \
                (op_ptr_)->type            = MPIDI_RMA_GET;                                     \
                (op_ptr_)->origin_addr     = (op_ptr_)->result_addr;                            \
                (op_ptr_)->origin_count    = (op_ptr_)->result_count;                           \
                (op_ptr_)->origin_datatype = (op_ptr_)->result_datatype;                        \
                                                                                                \
                (err_) = MPIDI_CH3I_Recv_rma_msg((op_ptr_), (win_ptr_), (source_win_handle_),   \
                                                    (target_win_handle_), &(op_ptr_)->dtype_info,\
                                                    &(op_ptr_)->dataloop, &(op_ptr_)->request); \
            } else {                                                                            \
                MPIDI_CH3I_TRACK_RMA_WRITE(op_ptr_, win_ptr_);                                  \
                (err_) = MPIDI_CH3I_Send_rma_msg((op_ptr_), (win_ptr_), (source_win_handle_),   \
                                                    (target_win_handle_), &(op_ptr_)->dtype_info,\
                                                    &(op_ptr_)->dataloop, &(op_ptr_)->request); \
            }                                                                                   \
            if (err_) { MPIU_ERR_POP(err_); }                                                   \
            break;                                                                              \
        case MPIDI_RMA_ACC_CONTIG:                                                              \
            MPIDI_CH3I_TRACK_RMA_WRITE(op_ptr_, win_ptr_);                                      \
            (err_) = MPIDI_CH3I_Send_contig_acc_msg((op_ptr_), (win_ptr_),                      \
                                                       (source_win_handle_), (target_win_handle_),\
                                                       &(op_ptr_)->request );                   \
            if (err_) { MPIU_ERR_POP(err_); }                                                   \
            break;                                                                              \
        case (MPIDI_RMA_GET):                                                                   \
            (err_) = MPIDI_CH3I_Recv_rma_msg((op_ptr_), (win_ptr_),                             \
                                                (source_win_handle_), (target_win_handle_),     \
                                                &(op_ptr_)->dtype_info,                         \
                                                &(op_ptr_)->dataloop, &(op_ptr_)->request);     \
            if (err_) { MPIU_ERR_POP(err_); }                                                   \
            break;                                                                              \
        case (MPIDI_RMA_COMPARE_AND_SWAP):                                                      \
        case (MPIDI_RMA_FETCH_AND_OP):                                                          \
            MPIDI_CH3I_TRACK_RMA_WRITE(op_ptr_, win_ptr_);                                      \
            (err_) = MPIDI_CH3I_Send_immed_rmw_msg((op_ptr_), (win_ptr_),                       \
                                                      (source_win_handle_), (target_win_handle_),\
                                                      &(op_ptr_)->request );                    \
            if (err_) { MPIU_ERR_POP(err_); }                                                   \
            break;                                                                              \
                                                                                                \
        default:                                                                                \
            MPIU_ERR_SETANDJUMP(err_,MPI_ERR_OTHER,"**winInvalidOp");                           \
    }                                                                                           \
    } while (0)


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#undef FUNCNAME
#define FUNCNAME MPIDI_Win_fence
#undef FCNAME
#define FCNAME MPIDI_QUOTE(FUNCNAME)
int MPIDI_Win_fence(int assert, MPID_Win *win_ptr)
{
    int mpi_errno = MPI_SUCCESS;
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    int comm_size;
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    int *rma_target_proc, *nops_to_proc, i, total_op_count, *curr_ops_cnt;
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    MPIDI_RMA_Op_t *curr_ptr;
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    MPIDI_RMA_Ops_list_t ops_list;
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    MPID_Comm *comm_ptr;
    MPI_Win source_win_handle, target_win_handle;
    MPID_Progress_state progress_state;
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    int errflag = FALSE;
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    MPIU_CHKLMEM_DECL(3);
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    MPIDI_STATE_DECL(MPID_STATE_MPIDI_WIN_FENCE);

    MPIDI_RMA_FUNC_ENTER(MPID_STATE_MPIDI_WIN_FENCE);

    /* In case this process was previously the target of passive target rma
     * operations, we need to take care of the following...
     * Since we allow MPI_Win_unlock to return without a done ack from
     * the target in the case of multiple rma ops and exclusive lock,
     * we need to check whether there is a lock on the window, and if
     * there is a lock, poke the progress engine until the operartions
     * have completed and the lock is released. */
    if (win_ptr->current_lock_type != MPID_LOCK_NONE)
    {
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	MPIU_INSTR_DURATION_START(winfence_clearlock);
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	MPID_Progress_start(&progress_state);
	while (win_ptr->current_lock_type != MPID_LOCK_NONE)
	{
	    /* poke the progress engine */
	    mpi_errno = MPID_Progress_wait(&progress_state);
	    /* --BEGIN ERROR HANDLING-- */
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	    if (mpi_errno != MPI_SUCCESS) {
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		MPID_Progress_end(&progress_state);
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		MPIU_ERR_SETANDJUMP(mpi_errno,MPI_ERR_OTHER,"**winnoprogress");
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	    }
	    /* --END ERROR HANDLING-- */
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	    MPIU_INSTR_DURATION_INCR(winfence_clearlock,0,1);
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	}
	MPID_Progress_end(&progress_state);
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	MPIU_INSTR_DURATION_END(winfence_clearlock);
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    }
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    /* Note that the NOPRECEDE and NOSUCCEED must be specified by all processes
       in the window's group if any specify it */
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    if (assert & MPI_MODE_NOPRECEDE)
    {
	win_ptr->fence_cnt = (assert & MPI_MODE_NOSUCCEED) ? 0 : 1;
	goto fn_exit;
    }
    
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    if (win_ptr->fence_cnt == 0)
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    {
	/* win_ptr->fence_cnt == 0 means either this is the very first
	   call to fence or the preceding fence had the
	   MPI_MODE_NOSUCCEED assert. 
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           If this fence has MPI_MODE_NOSUCCEED, do nothing and return.
	   Otherwise just increment the fence count and return. */

	if (!(assert & MPI_MODE_NOSUCCEED)) win_ptr->fence_cnt = 1;
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    }
    else
    {
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	int nRequest = 0;
	int nRequestNew = 0;
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	MPIU_INSTR_DURATION_START(winfence_rs);
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	/* This is the second or later fence. Do all the preceding RMA ops. */
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	comm_ptr = win_ptr->comm_ptr;
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	/* First inform every process whether it is a target of RMA
	   ops from this process */
	comm_size = comm_ptr->local_size;

	MPIU_CHKLMEM_MALLOC(rma_target_proc, int *, comm_size*sizeof(int),
			    mpi_errno, "rma_target_proc");
	for (i=0; i<comm_size; i++) rma_target_proc[i] = 0;
	
	/* keep track of no. of ops to each proc. Needed for knowing
	   whether or not to decrement the completion counter. The
	   completion counter is decremented only on the last
	   operation. */
	MPIU_CHKLMEM_MALLOC(nops_to_proc, int *, comm_size*sizeof(int),
			    mpi_errno, "nops_to_proc");
	for (i=0; i<comm_size; i++) nops_to_proc[i] = 0;

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        /* FIXME: This is a temporary hack to keep active target working with
         * the new ops list structure.  This should be replaced with iteration
         * over the targets/ops lists inside of the ops processing code.
         * Ideally, we should issue ops breadth-first across targets. */

        ops_list = MPIDI_CH3I_RMA_Ops_concat_all(win_ptr);
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	/* set rma_target_proc[i] to 1 if rank i is a target of RMA
	   ops from this process */
	total_op_count = 0;
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        curr_ptr = MPIDI_CH3I_RMA_Ops_head(&ops_list);
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	while (curr_ptr != NULL)
	{
	    total_op_count++;
	    rma_target_proc[curr_ptr->target_rank] = 1;
	    nops_to_proc[curr_ptr->target_rank]++;
	    curr_ptr = curr_ptr->next;
	}
	
	MPIU_CHKLMEM_MALLOC(curr_ops_cnt, int *, comm_size*sizeof(int),
			    mpi_errno, "curr_ops_cnt");
	for (i=0; i<comm_size; i++) curr_ops_cnt[i] = 0;
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	/* do a reduce_scatter_block (with MPI_SUM) on rma_target_proc. 
	   As a result,
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	   each process knows how many other processes will be doing
	   RMA ops on its window */  
            
	/* first initialize the completion counter. */
	win_ptr->my_counter = comm_size;
            
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	mpi_errno = MPIR_Reduce_scatter_block_impl(MPI_IN_PLACE, rma_target_proc, 1,
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                                                   MPI_INT, MPI_SUM, comm_ptr, &errflag);
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	MPIU_INSTR_DURATION_END(winfence_rs);
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	/* result is stored in rma_target_proc[0] */
	if (mpi_errno) { MPIU_ERR_POP(mpi_errno); }
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        MPIU_ERR_CHKANDJUMP(errflag, mpi_errno, MPI_ERR_OTHER, "**coll_fail");
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	/* Set the completion counter */
	/* FIXME: MT: this needs to be done atomically because other
	   procs have the address and could decrement it. */
	win_ptr->my_counter = win_ptr->my_counter - comm_size + 
	    rma_target_proc[0];  
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	MPIU_INSTR_DURATION_START(winfence_issue);
	MPIU_INSTR_DURATION_INCR(winfence_issue,0,total_op_count);
	MPIU_INSTR_DURATION_MAX(winfence_issue,1,total_op_count);
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	MPIU_INSTR_COUNTER_RESET(winfence_reqs);
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	i = 0;
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        curr_ptr = MPIDI_CH3I_RMA_Ops_head(&ops_list);
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	while (curr_ptr != NULL)
	{
	    /* The completion counter at the target is decremented only on 
	       the last RMA operation. We indicate the last operation by 
	       passing the source_win_handle only on the last operation. 
	       Otherwise, we pass NULL */
	    if (curr_ops_cnt[curr_ptr->target_rank] ==
		nops_to_proc[curr_ptr->target_rank] - 1) 
		source_win_handle = win_ptr->handle;
	    else 
		source_win_handle = MPI_WIN_NULL;
	    
	    target_win_handle = win_ptr->all_win_handles[curr_ptr->target_rank];
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#define MPIDI_CH3I_TRACK_RMA_WRITE(op_ptr_, win_ptr_) /* Not used by active mode */
            MPIDI_CH3I_ISSUE_RMA_OP(curr_ptr, win_ptr, source_win_handle, target_win_handle, mpi_errno);
#undef MPIDI_CH3I_TRACK_RMA_WRITE
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	    i++;
	    curr_ops_cnt[curr_ptr->target_rank]++;
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	    /* If the request is null, we can remove it immediately */
	    if (!curr_ptr->request) {
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                MPIDI_CH3I_RMA_Ops_free_and_next(&ops_list, &curr_ptr);
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	    }
	    else  {
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		nRequest++;
		MPIU_INSTR_COUNTER_INCR(winfence_reqs,1);
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		curr_ptr    = curr_ptr->next;
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		/* The test on the difference is to reduce the number
		   of times the partial complete routine is called. Without
		   this, significant overhead is added once the
		   number of requests exceeds the threshold, since the
		   number that are completed in a call may be small. */
		if (nRequest > MPIR_PARAM_RMA_NREQUEST_THRESHOLD && 
		    nRequest - nRequestNew > MPIR_PARAM_RMA_NREQUEST_NEW_THRESHOLD) {
		    int nDone = 0;
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                    MPIDI_CH3I_RMAListPartialComplete(win_ptr, &ops_list, curr_ptr, &nDone);
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		    /* if (nDone > 0) printf( "nDone = %d\n", nDone ); */
		    nRequest -= nDone;
		    nRequestNew = nRequest;
		}
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	    }
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	}
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	MPIU_INSTR_DURATION_END(winfence_issue);

	/* We replaced a loop over an array of requests with a list of the
	   incomplete requests.  The reason to do 
	   that is for long lists - processing the entire list until
	   all are done introduces a potentially n^2 time.  In 
	   testing with test/mpi/perf/manyrma.c , the number of iterations
	   within the "while (total_op_count) was O(total_op_count).
	   
	   Another alternative is to create a more compressed list (storing
	   only the necessary information, reducing the number of cache lines
	   needed while looping through the requests.
	*/
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	if (total_op_count)
	{ 
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	    MPIU_INSTR_STMT(list_complete=MPIU_INSTR_GET_VAR(winfence_complete));
	    MPIU_INSTR_STMT(list_block=MPIU_INSTR_GET_VAR(winfence_block));
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            mpi_errno = MPIDI_CH3I_RMAListComplete(win_ptr, &ops_list);
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	}
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        MPIU_Assert(MPIDI_CH3I_RMA_Ops_isempty(&ops_list));
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	/* wait for all operations from other processes to finish */
	if (win_ptr->my_counter)
	{
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	    MPIU_INSTR_DURATION_START(winfence_wait);
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	    MPID_Progress_start(&progress_state);
	    while (win_ptr->my_counter)
	    {
		mpi_errno = MPID_Progress_wait(&progress_state);
		/* --BEGIN ERROR HANDLING-- */
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		if (mpi_errno != MPI_SUCCESS) {
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		    MPID_Progress_end(&progress_state);
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		    MPIU_ERR_SETANDJUMP(mpi_errno,MPI_ERR_OTHER,"**winnoprogress");
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		}
		/* --END ERROR HANDLING-- */
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		MPIU_INSTR_DURATION_INCR(winfence_wait,0,1);
418 419
	    }
	    MPID_Progress_end(&progress_state);
420
	    MPIU_INSTR_DURATION_END(winfence_wait);
421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438
	} 
	
	if (assert & MPI_MODE_NOSUCCEED)
	{
	    win_ptr->fence_cnt = 0;
	}
    }

 fn_exit:
    MPIU_CHKLMEM_FREEALL();
    MPIDI_RMA_FUNC_EXIT(MPID_STATE_MPIDI_WIN_FENCE);
    return mpi_errno;
    /* --BEGIN ERROR HANDLING-- */
 fn_fail:
    goto fn_exit;
    /* --END ERROR HANDLING-- */
}

439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482
/* create_datatype() creates a new struct datatype for the dtype_info
   and the dataloop of the target datatype together with the user data */
#undef FUNCNAME
#define FUNCNAME create_datatype
#undef FCNAME
#define FCNAME MPIDI_QUOTE(FUNCNAME)
static int create_datatype(const MPIDI_RMA_dtype_info *dtype_info,
                           const void *dataloop, MPI_Aint dataloop_sz,
                           const void *o_addr, int o_count, MPI_Datatype o_datatype,
                           MPID_Datatype **combined_dtp)
{
    int mpi_errno = MPI_SUCCESS;
    /* datatype_set_contents wants an array 'ints' which is the
       blocklens array with count prepended to it.  So blocklens
       points to the 2nd element of ints to avoid having to copy
       blocklens into ints later. */
    int ints[4];
    int *blocklens = &ints[1];
    MPI_Aint displaces[3];
    MPI_Datatype datatypes[3];
    const int count = 3;
    MPI_Datatype combined_datatype;
    MPIDI_STATE_DECL(MPID_STATE_CREATE_DATATYPE);

    MPIDI_FUNC_ENTER(MPID_STATE_CREATE_DATATYPE);

    /* create datatype */
    displaces[0] = MPIU_PtrToAint(dtype_info);
    blocklens[0] = sizeof(*dtype_info);
    datatypes[0] = MPI_BYTE;
    
    displaces[1] = MPIU_PtrToAint(dataloop);
    blocklens[1] = dataloop_sz;
    datatypes[1] = MPI_BYTE;
    
    displaces[2] = MPIU_PtrToAint(o_addr);
    blocklens[2] = o_count;
    datatypes[2] = o_datatype;
    
    mpi_errno = MPID_Type_struct(count,
                                 blocklens,
                                 displaces,
                                 datatypes,
                                 &combined_datatype);
483 484
    if (mpi_errno) MPIU_ERR_POP(mpi_errno);
   
485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519
    ints[0] = count;

    MPID_Datatype_get_ptr(combined_datatype, *combined_dtp);    
    mpi_errno = MPID_Datatype_set_contents(*combined_dtp,
				           MPI_COMBINER_STRUCT,
				           count+1, /* ints (cnt,blklen) */
				           count, /* aints (disps) */
				           count, /* types */
				           ints,
				           displaces,
				           datatypes);
    if (mpi_errno) MPIU_ERR_POP(mpi_errno);

    /* Commit datatype */
    
    MPID_Dataloop_create(combined_datatype,
                         &(*combined_dtp)->dataloop,
                         &(*combined_dtp)->dataloop_size,
                         &(*combined_dtp)->dataloop_depth,
                         MPID_DATALOOP_HOMOGENEOUS);
    
    /* create heterogeneous dataloop */
    MPID_Dataloop_create(combined_datatype,
                         &(*combined_dtp)->hetero_dloop,
                         &(*combined_dtp)->hetero_dloop_size,
                         &(*combined_dtp)->hetero_dloop_depth,
                         MPID_DATALOOP_HETEROGENEOUS);
 
 fn_exit:
    MPIDI_FUNC_EXIT(MPID_STATE_CREATE_DATATYPE);
    return mpi_errno;
 fn_fail:
    goto fn_exit;
}

520 521 522 523 524

#undef FUNCNAME
#define FUNCNAME MPIDI_CH3I_Send_rma_msg
#undef FCNAME
#define FCNAME MPIDI_QUOTE(FUNCNAME)
525
static int MPIDI_CH3I_Send_rma_msg(MPIDI_RMA_Op_t *rma_op, MPID_Win *win_ptr,
526 527 528 529 530 531 532 533 534 535
				   MPI_Win source_win_handle, 
				   MPI_Win target_win_handle, 
				   MPIDI_RMA_dtype_info *dtype_info, 
				   void **dataloop, MPID_Request **request) 
{
    MPIDI_CH3_Pkt_t upkt;
    MPIDI_CH3_Pkt_put_t *put_pkt = &upkt.put;
    MPIDI_CH3_Pkt_accum_t *accum_pkt = &upkt.accum;
    MPID_IOV iov[MPID_IOV_LIMIT];
    int mpi_errno=MPI_SUCCESS, predefined;
536
    int origin_dt_derived, target_dt_derived, origin_type_size, iovcnt; 
537 538 539
    MPIDI_VC_t * vc;
    MPID_Comm *comm_ptr;
    MPID_Datatype *target_dtp=NULL, *origin_dtp=NULL;
540
    MPID_Request *resp_req=NULL;
541 542 543 544 545 546
    MPIU_CHKPMEM_DECL(1);
    MPIDI_STATE_DECL(MPID_STATE_MPIDI_CH3I_SEND_RMA_MSG);
    MPIDI_STATE_DECL(MPID_STATE_MEMCPY);

    MPIDI_RMA_FUNC_ENTER(MPID_STATE_MPIDI_CH3I_SEND_RMA_MSG);

547 548
    *request = NULL;

549 550 551 552 553 554 555 556 557 558 559
    if (rma_op->type == MPIDI_RMA_PUT)
    {
        MPIDI_Pkt_init(put_pkt, MPIDI_CH3_PKT_PUT);
        put_pkt->addr = (char *) win_ptr->base_addrs[rma_op->target_rank] +
            win_ptr->disp_units[rma_op->target_rank] * rma_op->target_disp;

        put_pkt->count = rma_op->target_count;
        put_pkt->datatype = rma_op->target_datatype;
        put_pkt->dataloop_size = 0;
        put_pkt->target_win_handle = target_win_handle;
        put_pkt->source_win_handle = source_win_handle;
560
        
561 562 563
        iov[0].MPID_IOV_BUF = (MPID_IOV_BUF_CAST) put_pkt;
        iov[0].MPID_IOV_LEN = sizeof(*put_pkt);
    }
564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603
    else if (rma_op->type == MPIDI_RMA_GET_ACCUMULATE)
    {
        /* Create a request for the GACC response.  Store the response buf, count, and
           datatype in it, and pass the request's handle in the GACC packet. When the
           response comes from the target, it will contain the request handle. */
        resp_req = MPID_Request_create();
        MPIU_ERR_CHKANDJUMP(resp_req == NULL, mpi_errno, MPI_ERR_OTHER, "**nomemreq");

        MPIU_Object_set_ref(resp_req, 2);

        resp_req->dev.user_buf = rma_op->result_addr;
        resp_req->dev.user_count = rma_op->result_count;
        resp_req->dev.datatype = rma_op->result_datatype;
        resp_req->dev.target_win_handle = target_win_handle;
        resp_req->dev.source_win_handle = source_win_handle;

        MPIDI_CH3I_DATATYPE_IS_PREDEFINED(resp_req->dev.datatype, predefined);
        if (!predefined) {
            MPID_Datatype *result_dtp = NULL;
            MPID_Datatype_get_ptr(resp_req->dev.datatype, result_dtp);
            resp_req->dev.datatype_ptr = result_dtp;
            /* this will cause the datatype to be freed when the
               request is freed. */
        }

        /* Note: Get_accumulate uses the same packet type as accumulate */
        MPIDI_Pkt_init(accum_pkt, MPIDI_CH3_PKT_GET_ACCUM);
        accum_pkt->addr = (char *) win_ptr->base_addrs[rma_op->target_rank] +
            win_ptr->disp_units[rma_op->target_rank] * rma_op->target_disp;
        accum_pkt->count = rma_op->target_count;
        accum_pkt->datatype = rma_op->target_datatype;
        accum_pkt->dataloop_size = 0;
        accum_pkt->op = rma_op->op;
        accum_pkt->target_win_handle = target_win_handle;
        accum_pkt->source_win_handle = source_win_handle;
        accum_pkt->request_handle = resp_req->handle;

        iov[0].MPID_IOV_BUF = (MPID_IOV_BUF_CAST) accum_pkt;
        iov[0].MPID_IOV_LEN = sizeof(*accum_pkt);
    }
604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619
    else
    {
        MPIDI_Pkt_init(accum_pkt, MPIDI_CH3_PKT_ACCUMULATE);
        accum_pkt->addr = (char *) win_ptr->base_addrs[rma_op->target_rank] +
            win_ptr->disp_units[rma_op->target_rank] * rma_op->target_disp;
        accum_pkt->count = rma_op->target_count;
        accum_pkt->datatype = rma_op->target_datatype;
        accum_pkt->dataloop_size = 0;
        accum_pkt->op = rma_op->op;
        accum_pkt->target_win_handle = target_win_handle;
        accum_pkt->source_win_handle = source_win_handle;

        iov[0].MPID_IOV_BUF = (MPID_IOV_BUF_CAST) accum_pkt;
        iov[0].MPID_IOV_LEN = sizeof(*accum_pkt);
    }

620 621 622 623
    /*    printf("send pkt: type %d, addr %d, count %d, base %d\n", rma_pkt->type,
          rma_pkt->addr, rma_pkt->count, win_ptr->base_addrs[rma_op->target_rank]);
          fflush(stdout);
    */
624

625
    comm_ptr = win_ptr->comm_ptr;
626
    MPIDI_Comm_get_vc_set_active(comm_ptr, rma_op->target_rank, &vc);
627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653

    MPIDI_CH3I_DATATYPE_IS_PREDEFINED(rma_op->origin_datatype, predefined);
    if (!predefined)
    {
        origin_dt_derived = 1;
        MPID_Datatype_get_ptr(rma_op->origin_datatype, origin_dtp);
    }
    else
    {
        origin_dt_derived = 0;
    }

    MPIDI_CH3I_DATATYPE_IS_PREDEFINED(rma_op->target_datatype, predefined);
    if (!predefined)
    {
        target_dt_derived = 1;
        MPID_Datatype_get_ptr(rma_op->target_datatype, target_dtp);
    }
    else
    {
        target_dt_derived = 0;
    }

    if (target_dt_derived)
    {
        /* derived datatype on target. fill derived datatype info */
        dtype_info->is_contig = target_dtp->is_contig;
654
        dtype_info->max_contig_blocks = target_dtp->max_contig_blocks;
655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671
        dtype_info->size = target_dtp->size;
        dtype_info->extent = target_dtp->extent;
        dtype_info->dataloop_size = target_dtp->dataloop_size;
        dtype_info->dataloop_depth = target_dtp->dataloop_depth;
        dtype_info->eltype = target_dtp->eltype;
        dtype_info->dataloop = target_dtp->dataloop;
        dtype_info->ub = target_dtp->ub;
        dtype_info->lb = target_dtp->lb;
        dtype_info->true_ub = target_dtp->true_ub;
        dtype_info->true_lb = target_dtp->true_lb;
        dtype_info->has_sticky_ub = target_dtp->has_sticky_ub;
        dtype_info->has_sticky_lb = target_dtp->has_sticky_lb;

	MPIU_CHKPMEM_MALLOC(*dataloop, void *, target_dtp->dataloop_size, 
			    mpi_errno, "dataloop");

	MPIDI_FUNC_ENTER(MPID_STATE_MEMCPY);
672
        MPIU_Memcpy(*dataloop, target_dtp->dataloop, target_dtp->dataloop_size);
673
	MPIDI_FUNC_EXIT(MPID_STATE_MEMCPY);
674 675
        /* the dataloop can have undefined padding sections, so we need to let
         * valgrind know that it is OK to pass this data to writev later on */
676
        MPL_VG_MAKE_MEM_DEFINED(*dataloop, target_dtp->dataloop_size);
677 678 679 680 681 682 683 684 685 686 687 688 689

        if (rma_op->type == MPIDI_RMA_PUT)
	{
            put_pkt->dataloop_size = target_dtp->dataloop_size;
	}
        else
	{
            accum_pkt->dataloop_size = target_dtp->dataloop_size;
	}
    }

    MPID_Datatype_get_size_macro(rma_op->origin_datatype, origin_type_size);

690
    if (!target_dt_derived)
691
    {
692 693 694 695
        /* basic datatype on target */
        if (!origin_dt_derived)
        {
            /* basic datatype on origin */
696 697 698
            iov[1].MPID_IOV_BUF = (MPID_IOV_BUF_CAST)rma_op->origin_addr;
            iov[1].MPID_IOV_LEN = rma_op->origin_count * origin_type_size;
            iovcnt = 2;
699
	    MPIU_THREAD_CS_ENTER(CH3COMM,vc);
700
            mpi_errno = MPIDI_CH3_iStartMsgv(vc, iov, iovcnt, request);
701
	    MPIU_THREAD_CS_EXIT(CH3COMM,vc);
702
            MPIU_ERR_CHKANDJUMP(mpi_errno, mpi_errno, MPI_ERR_OTHER, "**ch3|rmamsg");
703 704
        }
        else
705 706 707
        {
            /* derived datatype on origin */
            *request = MPID_Request_create();
708
            MPIU_ERR_CHKANDJUMP(*request == NULL,mpi_errno,MPI_ERR_OTHER,"**nomemreq");
709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727
            
            MPIU_Object_set_ref(*request, 2);
            (*request)->kind = MPID_REQUEST_SEND;
            
            (*request)->dev.segment_ptr = MPID_Segment_alloc( );
            MPIU_ERR_CHKANDJUMP1((*request)->dev.segment_ptr == NULL, mpi_errno, MPI_ERR_OTHER, "**nomem", "**nomem %s", "MPID_Segment_alloc");

            (*request)->dev.datatype_ptr = origin_dtp;
            /* this will cause the datatype to be freed when the request
               is freed. */
            MPID_Segment_init(rma_op->origin_addr, rma_op->origin_count,
                              rma_op->origin_datatype,
                              (*request)->dev.segment_ptr, 0);
            (*request)->dev.segment_first = 0;
            (*request)->dev.segment_size = rma_op->origin_count * origin_type_size;

            (*request)->dev.OnFinal = 0;
            (*request)->dev.OnDataAvail = 0;

728
	    MPIU_THREAD_CS_ENTER(CH3COMM,vc);
729
            mpi_errno = vc->sendNoncontig_fn(vc, *request, iov[0].MPID_IOV_BUF, iov[0].MPID_IOV_LEN);
730
	    MPIU_THREAD_CS_EXIT(CH3COMM,vc);
731
            MPIU_ERR_CHKANDJUMP(mpi_errno, mpi_errno, MPI_ERR_OTHER, "**ch3|rmamsg");
732 733 734 735
        }
    }
    else
    {
736
        /* derived datatype on target */
737
        MPID_Datatype *combined_dtp = NULL;
738 739 740

        *request = MPID_Request_create();
        if (*request == NULL) {
741
	    MPIU_ERR_SETANDJUMP(mpi_errno,MPI_ERR_OTHER,"**nomemreq");
742 743 744 745 746 747
        }

        MPIU_Object_set_ref(*request, 2);
        (*request)->kind = MPID_REQUEST_SEND;

	(*request)->dev.segment_ptr = MPID_Segment_alloc( );
748 749 750 751
        MPIU_ERR_CHKANDJUMP1((*request)->dev.segment_ptr == NULL, mpi_errno, MPI_ERR_OTHER, "**nomem", "**nomem %s", "MPID_Segment_alloc");

        /* create a new datatype containing the dtype_info, dataloop, and origin data */

752 753
        mpi_errno = create_datatype(dtype_info, *dataloop, target_dtp->dataloop_size, rma_op->origin_addr,
                                    rma_op->origin_count, rma_op->origin_datatype, &combined_dtp);
754
        if (mpi_errno) MPIU_ERR_POP(mpi_errno);
755 756 757 758 759

        (*request)->dev.datatype_ptr = combined_dtp;
        /* combined_datatype will be freed when request is freed */

        MPID_Segment_init(MPI_BOTTOM, 1, combined_dtp->handle,
760 761
                          (*request)->dev.segment_ptr, 0);
        (*request)->dev.segment_first = 0;
762 763 764 765 766
        (*request)->dev.segment_size = combined_dtp->size;

        (*request)->dev.OnFinal = 0;
        (*request)->dev.OnDataAvail = 0;

767
	MPIU_THREAD_CS_ENTER(CH3COMM,vc);
768
        mpi_errno = vc->sendNoncontig_fn(vc, *request, iov[0].MPID_IOV_BUF, iov[0].MPID_IOV_LEN);
769
	MPIU_THREAD_CS_EXIT(CH3COMM,vc);
770
        MPIU_ERR_CHKANDJUMP(mpi_errno, mpi_errno, MPI_ERR_OTHER, "**ch3|rmamsg");
771

772 773 774
        /* we're done with the datatypes */
        if (origin_dt_derived)
            MPID_Datatype_release(origin_dtp);
775
        MPID_Datatype_release(target_dtp);
776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796
    }

    /* This operation can generate two requests; one for inbound and one for
       outbound data. */
    if (resp_req != NULL) {
        if (*request != NULL) {
            /* If we have both inbound and outbound requests (i.e. GACC
               operation), we need to ensure that the source buffer is
               available and that the response data has been received before
               informing the origin that this operation is complete.  Because
               the update needs to be done atomically at the target, they will
               not send back data until it has been received.  Therefore,
               completion of the response request implies that the send request
               has completed.

               Therefore: refs on the response request are set to two: one is
               held by the progress engine and the other by the RMA op
               completion code.  Refs on the outbound request are set to one;
               it will be completed by the progress engine.
             */

797
            MPID_Request_release(*request);
798 799 800 801 802 803 804 805 806
            *request = resp_req;

        } else {
            *request = resp_req;
        }

        /* For error checking */
        resp_req = NULL;
    }
807 808

 fn_exit:
809
    MPIU_CHKPMEM_COMMIT();
810 811 812 813
    MPIDI_RMA_FUNC_EXIT(MPID_STATE_MPIDI_CH3I_SEND_RMA_MSG);
    return mpi_errno;
    /* --BEGIN ERROR HANDLING-- */
 fn_fail:
814 815 816 817
    if (resp_req) {
        MPIU_Object_set_ref(resp_req, 0);
        MPIDI_CH3_Request_destroy(resp_req);
    }
818 819 820
    if (*request)
    {
        MPIU_CHKPMEM_REAP();
821 822
        if ((*request)->dev.datatype_ptr)
            MPID_Datatype_release((*request)->dev.datatype_ptr);
823 824 825 826
        MPIU_Object_set_ref(*request, 0);
        MPIDI_CH3_Request_destroy(*request);
    }
    *request = NULL;
827 828 829 830
    goto fn_exit;
    /* --END ERROR HANDLING-- */
}

831 832 833 834 835 836 837
/*
 * Use this for contiguous accumulate operations
 */
#undef FUNCNAME
#define FUNCNAME MPIDI_CH3I_Send_contig_acc_msg
#undef FCNAME
#define FCNAME MPIDI_QUOTE(FUNCNAME)
838
static int MPIDI_CH3I_Send_contig_acc_msg(MPIDI_RMA_Op_t *rma_op,
839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860
					  MPID_Win *win_ptr,
					  MPI_Win source_win_handle, 
					  MPI_Win target_win_handle, 
					  MPID_Request **request) 
{
    MPIDI_CH3_Pkt_t upkt;
    MPIDI_CH3_Pkt_accum_t *accum_pkt = &upkt.accum;
    MPID_IOV iov[MPID_IOV_LIMIT];
    int mpi_errno=MPI_SUCCESS;
    int origin_type_size, iovcnt; 
    MPIDI_VC_t * vc;
    MPID_Comm *comm_ptr;
    int len;
    MPIDI_STATE_DECL(MPID_STATE_MPIDI_CH3I_SEND_CONTIG_ACC_MSG);

    MPIDI_RMA_FUNC_ENTER(MPID_STATE_MPIDI_CH3I_SEND_CONTIG_ACC_MSG);

    *request = NULL;

    MPID_Datatype_get_size_macro(rma_op->origin_datatype, origin_type_size);
    /* FIXME: Make this size check efficient and match the packet type */
    len = rma_op->origin_count * origin_type_size;
861
    if (MPIR_PARAM_RMA_ACC_IMMED && len <= MPIDI_RMA_IMMED_INTS*sizeof(int)) {
862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884
	MPIDI_CH3_Pkt_accum_immed_t * accumi_pkt = &upkt.accum_immed;
	void *dest = accumi_pkt->data, *src = rma_op->origin_addr;
	
	MPIDI_Pkt_init(accumi_pkt, MPIDI_CH3_PKT_ACCUM_IMMED);
	accumi_pkt->addr = (char *) win_ptr->base_addrs[rma_op->target_rank] +
	    win_ptr->disp_units[rma_op->target_rank] * rma_op->target_disp;
	accumi_pkt->count = rma_op->target_count;
	accumi_pkt->datatype = rma_op->target_datatype;
	accumi_pkt->op = rma_op->op;
	accumi_pkt->target_win_handle = target_win_handle;
	accumi_pkt->source_win_handle = source_win_handle;
	
	switch (len) {
	case 1: *(uint8_t *)dest  = *(uint8_t *)src;  break;
	case 2: *(uint16_t *)dest = *(uint16_t *)src; break;
	case 4: *(uint32_t *)dest = *(uint32_t *)src; break;
	case 8: *(uint64_t *)dest = *(uint64_t *)src; break;
	default:
	    MPIU_Memcpy( accumi_pkt->data, (void *)rma_op->origin_addr, len );
	}
	comm_ptr = win_ptr->comm_ptr;
	MPIDI_Comm_get_vc_set_active(comm_ptr, rma_op->target_rank, &vc);
	MPIU_THREAD_CS_ENTER(CH3COMM,vc);
885
	mpi_errno = MPIDI_CH3_iStartMsg(vc, accumi_pkt, sizeof(*accumi_pkt), request);
886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922
	MPIU_THREAD_CS_EXIT(CH3COMM,vc);
	MPIU_ERR_CHKANDJUMP(mpi_errno, mpi_errno, MPI_ERR_OTHER, "**ch3|rmamsg");
	goto fn_exit;
    }

    MPIDI_Pkt_init(accum_pkt, MPIDI_CH3_PKT_ACCUMULATE);
    accum_pkt->addr = (char *) win_ptr->base_addrs[rma_op->target_rank] +
	win_ptr->disp_units[rma_op->target_rank] * rma_op->target_disp;
    accum_pkt->count = rma_op->target_count;
    accum_pkt->datatype = rma_op->target_datatype;
    accum_pkt->dataloop_size = 0;
    accum_pkt->op = rma_op->op;
    accum_pkt->target_win_handle = target_win_handle;
    accum_pkt->source_win_handle = source_win_handle;
    
    iov[0].MPID_IOV_BUF = (MPID_IOV_BUF_CAST) accum_pkt;
    iov[0].MPID_IOV_LEN = sizeof(*accum_pkt);

    /*    printf("send pkt: type %d, addr %d, count %d, base %d\n", rma_pkt->type,
          rma_pkt->addr, rma_pkt->count, win_ptr->base_addrs[rma_op->target_rank]);
          fflush(stdout);
    */

    comm_ptr = win_ptr->comm_ptr;
    MPIDI_Comm_get_vc_set_active(comm_ptr, rma_op->target_rank, &vc);


    /* basic datatype on target */
    /* basic datatype on origin */
    /* FIXME: This is still very heavyweight for a small message operation,
       such as a single word update */
    /* One possibility is to use iStartMsg with a buffer that is just large 
       enough, though note that nemesis has an optimization for this */
    iov[1].MPID_IOV_BUF = (MPID_IOV_BUF_CAST)rma_op->origin_addr;
    iov[1].MPID_IOV_LEN = rma_op->origin_count * origin_type_size;
    iovcnt = 2;
    MPIU_THREAD_CS_ENTER(CH3COMM,vc);
923
    mpi_errno = MPIDI_CH3_iStartMsgv(vc, iov, iovcnt, request);
924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941
    MPIU_THREAD_CS_EXIT(CH3COMM,vc);
    MPIU_ERR_CHKANDJUMP(mpi_errno, mpi_errno, MPI_ERR_OTHER, "**ch3|rmamsg");

 fn_exit:
    MPIDI_RMA_FUNC_EXIT(MPID_STATE_MPIDI_CH3I_SEND_CONTIG_ACC_MSG);
    return mpi_errno;
    /* --BEGIN ERROR HANDLING-- */
 fn_fail:
    if (*request)
    {
        MPIU_Object_set_ref(*request, 0);
        MPIDI_CH3_Request_destroy(*request);
    }
    *request = NULL;
    goto fn_exit;
    /* --END ERROR HANDLING-- */
}

942

943 944 945 946 947 948 949
/*
 * Initiate an immediate RMW accumulate operation
 */
#undef FUNCNAME
#define FUNCNAME MPIDI_CH3I_Send_immed_rmw_msg
#undef FCNAME
#define FCNAME MPIDI_QUOTE(FUNCNAME)
950
static int MPIDI_CH3I_Send_immed_rmw_msg(MPIDI_RMA_Op_t *rma_op,
951 952 953 954 955 956
                                         MPID_Win *win_ptr,
                                         MPI_Win source_win_handle, 
                                         MPI_Win target_win_handle, 
                                         MPID_Request **request) 
{
    int mpi_errno = MPI_SUCCESS;
957
    MPID_Request *rmw_req = NULL, *resp_req = NULL;
958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980
    MPIDI_VC_t *vc;
    MPID_Comm *comm_ptr;
    int len;
    MPIDI_STATE_DECL(MPID_STATE_MPIDI_CH3I_SEND_IMMED_RMW_MSG);

    MPIDI_RMA_FUNC_ENTER(MPID_STATE_MPIDI_CH3I_SEND_IMMED_RMW_MSG);

    *request = NULL;

    /* Create a request for the RMW response.  Store the origin buf, count, and
       datatype in it, and pass the request's handle RMW packet. When the
       response comes from the target, it will contain the request handle. */
    resp_req = MPID_Request_create();
    MPIU_ERR_CHKANDJUMP(resp_req == NULL, mpi_errno, MPI_ERR_OTHER, "**nomemreq");
    *request = resp_req;

    /* Set refs on the request to 2: one for the response message, and one for
       the partial completion handler */
    MPIU_Object_set_ref(resp_req, 2);

    resp_req->dev.user_buf = rma_op->result_addr;
    resp_req->dev.user_count = rma_op->result_count;
    resp_req->dev.datatype = rma_op->result_datatype;
981
    resp_req->dev.target_win_handle = target_win_handle;
982 983 984 985 986
    resp_req->dev.source_win_handle = source_win_handle;

    /* REQUIRE: All datatype arguments must be of the same, builtin
                type and counts must be 1. */
    MPID_Datatype_get_size_macro(rma_op->origin_datatype, len);
987
    comm_ptr = win_ptr->comm_ptr;
988 989 990 991 992 993 994

    if (rma_op->type == MPIDI_RMA_COMPARE_AND_SWAP) {
        MPIDI_CH3_Pkt_t upkt;
        MPIDI_CH3_Pkt_cas_t *cas_pkt = &upkt.cas;

        MPIU_Assert(len <= sizeof(MPIDI_CH3_CAS_Immed_u));

995 996
        /* If this is the last operation, it also unlocks the window 
           at the target. */
997
        if (source_win_handle != MPI_WIN_NULL) {
998 999 1000 1001 1002
            MPIDI_Pkt_init(cas_pkt, MPIDI_CH3_PKT_CAS_UNLOCK);
        } else {
            MPIDI_Pkt_init(cas_pkt, MPIDI_CH3_PKT_CAS);
        }

1003 1004
        cas_pkt->addr = (char *) win_ptr->base_addrs[rma_op->target_rank] +
            win_ptr->disp_units[rma_op->target_rank] * rma_op->target_disp;
1005 1006 1007 1008 1009 1010 1011 1012 1013
        cas_pkt->datatype = rma_op->target_datatype;
        cas_pkt->target_win_handle = target_win_handle;
        cas_pkt->request_handle = resp_req->handle;

        MPIU_Memcpy( (void *) &cas_pkt->origin_data, rma_op->origin_addr, len );
        MPIU_Memcpy( (void *) &cas_pkt->compare_data, rma_op->compare_addr, len );

        MPIDI_Comm_get_vc_set_active(comm_ptr, rma_op->target_rank, &vc);
        MPIU_THREAD_CS_ENTER(CH3COMM,vc);
1014
        mpi_errno = MPIDI_CH3_iStartMsg(vc, cas_pkt, sizeof(*cas_pkt), &rmw_req);
1015 1016
        MPIU_THREAD_CS_EXIT(CH3COMM,vc);
        MPIU_ERR_CHKANDJUMP(mpi_errno, mpi_errno, MPI_ERR_OTHER, "**ch3|rmamsg");
1017 1018 1019 1020

        if (rmw_req != NULL) {
            MPID_Request_release(rmw_req);
        }
1021 1022
    }

1023 1024 1025 1026 1027 1028
    else if (rma_op->type == MPIDI_RMA_FETCH_AND_OP) {
        MPIDI_CH3_Pkt_t upkt;
        MPIDI_CH3_Pkt_fop_t *fop_pkt = &upkt.fop;

        MPIU_Assert(len <= sizeof(MPIDI_CH3_FOP_Immed_u));

1029
        MPIDI_Pkt_init(fop_pkt, MPIDI_CH3_PKT_FOP);
1030

1031 1032
        fop_pkt->addr = (char *) win_ptr->base_addrs[rma_op->target_rank] +
            win_ptr->disp_units[rma_op->target_rank] * rma_op->target_disp;
1033 1034
        fop_pkt->datatype = rma_op->target_datatype;
        fop_pkt->target_win_handle = target_win_handle;
1035
        fop_pkt->source_win_handle = source_win_handle;
1036 1037 1038
        fop_pkt->request_handle = resp_req->handle;
        fop_pkt->op = rma_op->op;

1039
        if (len <= sizeof(fop_pkt->origin_data) || rma_op->op == MPI_NO_OP) {
1040
            /* Embed FOP data in the packet header */
1041
            if (rma_op->op != MPI_NO_OP) {
1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053
                MPIU_Memcpy( fop_pkt->origin_data, rma_op->origin_addr, len );
            }

            MPIDI_Comm_get_vc_set_active(comm_ptr, rma_op->target_rank, &vc);
            MPIU_THREAD_CS_ENTER(CH3COMM,vc);
            mpi_errno = MPIDI_CH3_iStartMsg(vc, fop_pkt, sizeof(*fop_pkt), &rmw_req);
            MPIU_THREAD_CS_EXIT(CH3COMM,vc);
            MPIU_ERR_CHKANDJUMP(mpi_errno, mpi_errno, MPI_ERR_OTHER, "**ch3|rmamsg");

            if (rmw_req != NULL) {
                MPID_Request_release(rmw_req);
            }
1054
        }
1055 1056 1057
        else {
            /* Data is too big to copy into the FOP header, use an IOV to send it */
            MPID_IOV iov[MPID_IOV_LIMIT];
1058

1059 1060 1061 1062
            rmw_req = MPID_Request_create();
            MPIU_ERR_CHKANDJUMP(rmw_req == NULL, mpi_errno, MPI_ERR_OTHER, "**nomemreq");
            MPIU_Object_set_ref(rmw_req, 1);

1063 1064 1065
            rmw_req->dev.OnFinal = 0;
            rmw_req->dev.OnDataAvail = 0;

1066 1067 1068 1069
            iov[0].MPID_IOV_BUF = (MPID_IOV_BUF_CAST)fop_pkt;
            iov[0].MPID_IOV_LEN = sizeof(*fop_pkt);
            iov[1].MPID_IOV_BUF = (MPID_IOV_BUF_CAST)rma_op->origin_addr;
            iov[1].MPID_IOV_LEN = len; /* count == 1 */
1070

1071 1072 1073 1074 1075 1076 1077 1078
            MPIDI_Comm_get_vc_set_active(comm_ptr, rma_op->target_rank, &vc);
            MPIU_THREAD_CS_ENTER(CH3COMM,vc);
            mpi_errno = MPIDI_CH3_iSendv(vc, rmw_req, iov, 2);
            MPIU_THREAD_CS_EXIT(CH3COMM,vc);

            MPIU_ERR_CHKANDJUMP(mpi_errno != MPI_SUCCESS, mpi_errno, MPI_ERR_OTHER, "**ch3|rmamsg");
        }
    }
1079 1080 1081 1082 1083 1084 1085 1086 1087
    else {
        MPIU_ERR_SETANDJUMP(mpi_errno, MPI_ERR_OTHER, "**ch3|rmamsg");
    }

fn_exit:
    MPIDI_RMA_FUNC_EXIT(MPID_STATE_MPIDI_CH3I_SEND_IMMED_RMW_MSG);
    return mpi_errno;
    /* --BEGIN ERROR HANDLING-- */
fn_fail:
1088
    if (*request) {
1089 1090 1091 1092
        MPIU_Object_set_ref(*request, 0);
        MPIDI_CH3_Request_destroy(*request);
    }
    *request = NULL;
1093 1094 1095 1096
    if (rmw_req) {
        MPIU_Object_set_ref(rmw_req, 0);
        MPIDI_CH3_Request_destroy(rmw_req);
    }
1097 1098 1099 1100 1101
    goto fn_exit;
    /* --END ERROR HANDLING-- */
}


1102 1103 1104 1105 1106

#undef FUNCNAME
#define FUNCNAME MPIDI_CH3I_Recv_rma_msg
#undef FCNAME
#define FCNAME MPIDI_QUOTE(FUNCNAME)
1107
static int MPIDI_CH3I_Recv_rma_msg(MPIDI_RMA_Op_t *rma_op, MPID_Win *win_ptr,
1108 1109 1110 1111 1112 1113 1114
				   MPI_Win source_win_handle, 
				   MPI_Win target_win_handle, 
				   MPIDI_RMA_dtype_info *dtype_info, 
				   void **dataloop, MPID_Request **request) 
{
    MPIDI_CH3_Pkt_t upkt;
    MPIDI_CH3_Pkt_get_t *get_pkt = &upkt.get;
1115
    int mpi_errno=MPI_SUCCESS, predefined;
1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132
    MPIDI_VC_t * vc;
    MPID_Comm *comm_ptr;
    MPID_Request *req = NULL;
    MPID_Datatype *dtp;
    MPID_IOV iov[MPID_IOV_LIMIT];
    MPIU_CHKPMEM_DECL(1);
    MPIDI_STATE_DECL(MPID_STATE_MPIDI_CH3I_RECV_RMA_MSG);
    MPIDI_STATE_DECL(MPID_STATE_MEMCPY);

    MPIDI_RMA_FUNC_ENTER(MPID_STATE_MPIDI_CH3I_RECV_RMA_MSG);

    /* create a request, store the origin buf, cnt, datatype in it,
       and pass a handle to it in the get packet. When the get
       response comes from the target, it will contain the request
       handle. */  
    req = MPID_Request_create();
    if (req == NULL) {
1133
	MPIU_ERR_SETANDJUMP(mpi_errno,MPI_ERR_OTHER,"**nomemreq");
1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167
    }

    *request = req;

    MPIU_Object_set_ref(req, 2);

    req->dev.user_buf = rma_op->origin_addr;
    req->dev.user_count = rma_op->origin_count;
    req->dev.datatype = rma_op->origin_datatype;
    req->dev.target_win_handle = MPI_WIN_NULL;
    req->dev.source_win_handle = source_win_handle;
    MPIDI_CH3I_DATATYPE_IS_PREDEFINED(req->dev.datatype, predefined);
    if (!predefined)
    {
        MPID_Datatype_get_ptr(req->dev.datatype, dtp);
        req->dev.datatype_ptr = dtp;
        /* this will cause the datatype to be freed when the
           request is freed. */  
    }

    MPIDI_Pkt_init(get_pkt, MPIDI_CH3_PKT_GET);
    get_pkt->addr = (char *) win_ptr->base_addrs[rma_op->target_rank] +
        win_ptr->disp_units[rma_op->target_rank] * rma_op->target_disp;
    get_pkt->count = rma_op->target_count;
    get_pkt->datatype = rma_op->target_datatype;
    get_pkt->request_handle = req->handle;
    get_pkt->target_win_handle = target_win_handle;
    get_pkt->source_win_handle = source_win_handle;

/*    printf("send pkt: type %d, addr %d, count %d, base %d\n", rma_pkt->type,
           rma_pkt->addr, rma_pkt->count, win_ptr->base_addrs[rma_op->target_rank]);
    fflush(stdout);
*/
	    
1168
    comm_ptr = win_ptr->comm_ptr;
1169
    MPIDI_Comm_get_vc_set_active(comm_ptr, rma_op->target_rank, &vc);
1170 1171 1172 1173 1174

    MPIDI_CH3I_DATATYPE_IS_PREDEFINED(rma_op->target_datatype, predefined);
    if (predefined)
    {
        /* basic datatype on target. simply send the get_pkt. */
1175
	MPIU_THREAD_CS_ENTER(CH3COMM,vc);
1176
        mpi_errno = MPIDI_CH3_iStartMsg(vc, get_pkt, sizeof(*get_pkt), &req);
1177
	MPIU_THREAD_CS_EXIT(CH3COMM,vc);
1178 1179 1180 1181 1182 1183 1184 1185
    }
    else
    {
        /* derived datatype on target. fill derived datatype info and
           send it along with get_pkt. */

        MPID_Datatype_get_ptr(rma_op->target_datatype, dtp);
        dtype_info->is_contig = dtp->is_contig;
1186
        dtype_info->max_contig_blocks = dtp->max_contig_blocks;
1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203
        dtype_info->size = dtp->size;
        dtype_info->extent = dtp->extent;
        dtype_info->dataloop_size = dtp->dataloop_size;
        dtype_info->dataloop_depth = dtp->dataloop_depth;
        dtype_info->eltype = dtp->eltype;
        dtype_info->dataloop = dtp->dataloop;
        dtype_info->ub = dtp->ub;
        dtype_info->lb = dtp->lb;
        dtype_info->true_ub = dtp->true_ub;
        dtype_info->true_lb = dtp->true_lb;
        dtype_info->has_sticky_ub = dtp->has_sticky_ub;
        dtype_info->has_sticky_lb = dtp->has_sticky_lb;

	MPIU_CHKPMEM_MALLOC(*dataloop, void *, dtp->dataloop_size, 
			    mpi_errno, "dataloop");

	MPIDI_FUNC_ENTER(MPID_STATE_MEMCPY);
1204
        MPIU_Memcpy(*dataloop, dtp->dataloop, dtp->dataloop_size);
1205 1206
	MPIDI_FUNC_EXIT(MPID_STATE_MEMCPY);

1207 1208
        /* the dataloop can have undefined padding sections, so we need to let
         * valgrind know that it is OK to pass this data to writev later on */
1209
        MPL_VG_MAKE_MEM_DEFINED(*dataloop, dtp->dataloop_size);
1210

1211 1212 1213 1214 1215 1216 1217 1218
        get_pkt->dataloop_size = dtp->dataloop_size;

        iov[0].MPID_IOV_BUF = (MPID_IOV_BUF_CAST)get_pkt;
        iov[0].MPID_IOV_LEN = sizeof(*get_pkt);
        iov[1].MPID_IOV_BUF = (MPID_IOV_BUF_CAST)dtype_info;
        iov[1].MPID_IOV_LEN = sizeof(*dtype_info);
        iov[2].MPID_IOV_BUF = (MPID_IOV_BUF_CAST)*dataloop;
        iov[2].MPID_IOV_LEN = dtp->