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/*
* Copyright (c) 2004-2007 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2006 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* Copyright (c) 2008-2009 Cisco Systems, Inc. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#ifndef MCA_COLL_SYNC_EXPORT_H
#define MCA_COLL_SYNC_EXPORT_H
#include "ompi_config.h"
#include "mpi.h"
#include "opal/class/opal_object.h"
#include "opal/mca/mca.h"
#include "opal/util/output.h"
#include "ompi/constants.h"
#include "ompi/mca/coll/coll.h"
#include "ompi/mca/coll/base/base.h"
#include "ompi/communicator/communicator.h"
BEGIN_C_DECLS
/* API functions */
int mca_coll_sync_init_query(bool enable_progress_threads,
bool enable_mpi_threads);
mca_coll_base_module_t
*mca_coll_sync_comm_query(struct ompi_communicator_t *comm,
int *priority);
int mca_coll_sync_module_enable(mca_coll_base_module_t *module,
struct ompi_communicator_t *comm);
int mca_coll_sync_barrier(struct ompi_communicator_t *comm,
mca_coll_base_module_t *module);
int mca_coll_sync_bcast(void *buff, int count,
struct ompi_datatype_t *datatype,
int root,
struct ompi_communicator_t *comm,
mca_coll_base_module_t *module);
int mca_coll_sync_exscan(const void *sbuf, void *rbuf, int count,
struct ompi_datatype_t *dtype,
struct ompi_op_t *op,
struct ompi_communicator_t *comm,
mca_coll_base_module_t *module);
int mca_coll_sync_gather(const void *sbuf, int scount,
struct ompi_datatype_t *sdtype,
void *rbuf, int rcount,
struct ompi_datatype_t *rdtype,
int root,
struct ompi_communicator_t *comm,
mca_coll_base_module_t *module);
int mca_coll_sync_gatherv(const void *sbuf, int scount,
struct ompi_datatype_t *sdtype,
void *rbuf, const int *rcounts, const int *disps,
struct ompi_datatype_t *rdtype,
int root,
struct ompi_communicator_t *comm,
mca_coll_base_module_t *module);
int mca_coll_sync_reduce(const void *sbuf, void *rbuf, int count,
struct ompi_datatype_t *dtype,
struct ompi_op_t *op,
int root,
struct ompi_communicator_t *comm,
mca_coll_base_module_t *module);
int mca_coll_sync_reduce_scatter(const void *sbuf, void *rbuf,
const int *rcounts,
struct ompi_datatype_t *dtype,
struct ompi_op_t *op,
struct ompi_communicator_t *comm,
mca_coll_base_module_t *module);
int mca_coll_sync_scan(const void *sbuf, void *rbuf, int count,
struct ompi_datatype_t *dtype,
struct ompi_op_t *op,
struct ompi_communicator_t *comm,
mca_coll_base_module_t *module);
int mca_coll_sync_scatter(const void *sbuf, int scount,
struct ompi_datatype_t *sdtype,
void *rbuf, int rcount,
struct ompi_datatype_t *rdtype,
int root,
struct ompi_communicator_t *comm,
mca_coll_base_module_t *module);
int mca_coll_sync_scatterv(const void *sbuf, const int *scounts, const int *disps,
struct ompi_datatype_t *sdtype,
void *rbuf, int rcount,
struct ompi_datatype_t *rdtype,
int root,
struct ompi_communicator_t *comm,
mca_coll_base_module_t *module);
/* Types */
/* Module */
typedef struct mca_coll_sync_module_t {
mca_coll_base_module_t super;
/* Pointers to all the "real" collective functions */
mca_coll_base_comm_coll_t c_coll;
/* How many ops we've executed */
int before_num_operations;
/* How many ops we've executed (it's easier to have 2) */
int after_num_operations;
/* Avoid recursion of syncs */
bool in_operation;
} mca_coll_sync_module_t;
OBJ_CLASS_DECLARATION(mca_coll_sync_module_t);
/* Component */
typedef struct mca_coll_sync_component_t {
mca_coll_base_component_2_4_0_t super;
/* Priority of this component */
int priority;
/* Do a sync *before* each Nth collective */
int barrier_before_nops;
/* Do a sync *after* each Nth collective */
int barrier_after_nops;
} mca_coll_sync_component_t;
/* Globally exported variables */
OMPI_DECLSPEC extern mca_coll_sync_component_t mca_coll_sync_component;
/* Macro used in most of the collectives */
#define COLL_SYNC(m, op) \
do { \
int err = MPI_SUCCESS; \
(m)->in_operation = true; \
if (OPAL_UNLIKELY(++((m)->before_num_operations) == \
mca_coll_sync_component.barrier_before_nops)) { \
(m)->before_num_operations = 0; \
err = (m)->c_coll.coll_barrier(comm, (m)->c_coll.coll_barrier_module); \
} \
if (OPAL_LIKELY(MPI_SUCCESS == err)) { \
err = op; \
} \
if (OPAL_UNLIKELY(++((m)->after_num_operations) == \
mca_coll_sync_component.barrier_after_nops) && \
OPAL_LIKELY(MPI_SUCCESS == err)) { \
(m)->after_num_operations = 0; \
err = (m)->c_coll.coll_barrier(comm, (m)->c_coll.coll_barrier_module); \
} \
(m)->in_operation = false; \
return err; \
} while(0)
END_C_DECLS
#endif /* MCA_COLL_SYNC_EXPORT_H */
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