b4a0d40915
This commit contains the following changes: - pml/ob1: use the bml accessor function when requesting a bml endpoint. this will ensure that bml endpoints are only created when needed. for example, a bml endpoint is not requested and not allocated when receiving an eager message from a peer. - pml/ob1: change the pml_procs array in the ob1 communicator to a proc pointer array. at the cost of a single level of extra redirection this will allow us to allocate pml procs on demand. - pml/ob1: add an accessor function to access the pml proc structure for a given peer. this function will allocate the proc if it doesn't already exist. Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>
95 строки
3.1 KiB
C
95 строки
3.1 KiB
C
/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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* Copyright (c) 2004-2006 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* reserved.
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* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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* All rights reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*/
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/**
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* @file
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*/
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#ifndef MCA_PML_OB1_COMM_H
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#define MCA_PML_OB1_COMM_H
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#include "opal/threads/mutex.h"
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#include "opal/class/opal_list.h"
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#include "ompi/proc/proc.h"
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#include "ompi/communicator/communicator.h"
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BEGIN_C_DECLS
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struct mca_pml_ob1_comm_proc_t {
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opal_object_t super;
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uint16_t expected_sequence; /**< send message sequence number - receiver side */
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struct ompi_proc_t* ompi_proc;
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#if OPAL_ENABLE_MULTI_THREADS
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volatile int32_t send_sequence; /**< send side sequence number */
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#else
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int32_t send_sequence; /**< send side sequence number */
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#endif
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opal_list_t frags_cant_match; /**< out-of-order fragment queues */
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opal_list_t specific_receives; /**< queues of unmatched specific receives */
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opal_list_t unexpected_frags; /**< unexpected fragment queues */
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};
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typedef struct mca_pml_ob1_comm_proc_t mca_pml_ob1_comm_proc_t;
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OBJ_CLASS_DECLARATION(mca_pml_ob1_comm_proc_t);
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/**
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* Cached on ompi_communicator_t to hold queues/state
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* used by the PML<->PTL interface for matching logic.
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*/
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struct mca_pml_comm_t {
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opal_object_t super;
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#if OPAL_ENABLE_MULTI_THREADS
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volatile uint32_t recv_sequence; /**< recv request sequence number - receiver side */
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#else
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uint32_t recv_sequence; /**< recv request sequence number - receiver side */
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#endif
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opal_mutex_t matching_lock; /**< matching lock */
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opal_list_t wild_receives; /**< queue of unmatched wild (source process not specified) receives */
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mca_pml_ob1_comm_proc_t **procs;
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size_t num_procs;
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size_t last_probed;
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};
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typedef struct mca_pml_comm_t mca_pml_ob1_comm_t;
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OBJ_CLASS_DECLARATION(mca_pml_ob1_comm_t);
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static inline mca_pml_ob1_comm_proc_t *mca_pml_ob1_peer_lookup (struct ompi_communicator_t *comm, int rank)
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{
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mca_pml_ob1_comm_t *pml_comm = (mca_pml_ob1_comm_t *)comm->c_pml_comm;
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if (OPAL_UNLIKELY(NULL == pml_comm->procs[rank])) {
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pml_comm->procs[rank] = OBJ_NEW(mca_pml_ob1_comm_proc_t);
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pml_comm->procs[rank]->ompi_proc = ompi_comm_peer_lookup (comm, rank);
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OBJ_RETAIN(pml_comm->procs[rank]->ompi_proc);
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}
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return pml_comm->procs[rank];
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}
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/**
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* Initialize an instance of mca_pml_ob1_comm_t based on the communicator size.
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*
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* @param comm Instance of mca_pml_ob1_comm_t
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* @param size Size of communicator
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* @return OMPI_SUCCESS or error status on failure.
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*/
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extern int mca_pml_ob1_comm_init_size(mca_pml_ob1_comm_t* comm, size_t size);
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END_C_DECLS
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#endif
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