110 строки
3.5 KiB
C
110 строки
3.5 KiB
C
/*
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* Copyright (c) 2013-2016 Mellanox Technologies, Inc.
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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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#ifndef MCA_SCOLL_BASIC_H
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#define MCA_SCOLL_BASIC_H
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#include "oshmem_config.h"
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#include "oshmem/mca/mca.h"
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#include "oshmem/mca/scoll/scoll.h"
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#include "oshmem/util/oshmem_util.h"
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BEGIN_C_DECLS
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/* These functions (BARRIER_FUNC, BCAST_FUNC) may be called from any basic algorithm.
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* In case of shmem, the implementation of broadcast doesn't require
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* each process to know message size ( just root should know).
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* It differs from other implementations, so it may cause problems if
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* BCAST_FUNC is a callback to another implementation (e.g, fca, hcoll).
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* So we replace a callback (group->g_scoll.scoll_[func])
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* with a corresponding basic function. */
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#define BARRIER_FUNC mca_scoll_basic_barrier
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#define BCAST_FUNC mca_scoll_basic_broadcast
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/* Globally exported variables */
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OSHMEM_MODULE_DECLSPEC extern mca_scoll_base_component_1_0_0_t
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mca_scoll_basic_component;
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extern int mca_scoll_basic_priority_param;
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OSHMEM_DECLSPEC extern int mca_scoll_basic_param_barrier_algorithm;
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extern int mca_scoll_basic_param_broadcast_algorithm;
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extern int mca_scoll_basic_param_collect_algorithm;
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extern int mca_scoll_basic_param_reduce_algorithm;
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/* API functions */
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int mca_scoll_basic_init(bool enable_progress_threads, bool enable_threads);
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mca_scoll_base_module_t*
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mca_scoll_basic_query(struct oshmem_group_t *group, int *priority);
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enum {
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SHMEM_SYNC_INIT = _SHMEM_SYNC_VALUE,
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SHMEM_SYNC_WAIT = -2,
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SHMEM_SYNC_RUN = -3,
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SHMEM_SYNC_READY = -4,
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};
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int mca_scoll_basic_barrier(struct oshmem_group_t *group, long *pSync, int alg);
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int mca_scoll_basic_broadcast(struct oshmem_group_t *group,
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int PE_root,
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void *target,
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const void *source,
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size_t nlong,
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long *pSync,
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int alg);
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int mca_scoll_basic_collect(struct oshmem_group_t *group,
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void *target,
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const void *source,
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size_t nlong,
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long *pSync,
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bool nlong_type,
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int alg);
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int mca_scoll_basic_reduce(struct oshmem_group_t *group,
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struct oshmem_op_t *op,
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void *target,
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const void *source,
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size_t nlong,
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long *pSync,
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void *pWrk,
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int alg);
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int mca_scoll_basic_alltoall(struct oshmem_group_t *group,
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void *target,
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const void *source,
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ptrdiff_t dst, ptrdiff_t sst,
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size_t nelems,
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size_t element_size,
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long *pSync,
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int alg);
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static inline unsigned int scoll_log2(unsigned long val)
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{
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unsigned int count = 0;
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while (val > 0) {
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val = val >> 1;
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count++;
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}
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return count > 0 ? count - 1 : 0;
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}
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struct mca_scoll_basic_module_t {
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mca_scoll_base_module_t super;
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};
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typedef struct mca_scoll_basic_module_t mca_scoll_basic_module_t;
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OBJ_CLASS_DECLARATION(mca_scoll_basic_module_t);
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END_C_DECLS
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#endif /* MCA_SCOLL_BASIC_H */
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