92 строки
2.2 KiB
C
92 строки
2.2 KiB
C
/*
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* Copyright (c) 2012 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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#include "oshmem_config.h"
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#include "oshmem/constants.h"
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#include "oshmem/include/shmem.h"
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#include "oshmem/runtime/runtime.h"
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#include "oshmem/mca/scoll/scoll.h"
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#include "oshmem/mca/scoll/base/base.h"
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#include "oshmem/proc/proc.h"
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#include "oshmem/proc/proc_group_cache.h"
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void shmem_barrier( int PE_start,
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int logPE_stride,
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int PE_size,
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long *pSync )
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{
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int rc = OSHMEM_SUCCESS;
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oshmem_group_t* group = NULL;
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RUNTIME_CHECK_INIT();
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#if OSHMEM_SPEC_COMPAT == 1
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/* all outstanding puts must be completed */
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shmem_fence();
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#endif
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if ((0 <= PE_start) && (0 <= logPE_stride))
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{
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/* Create group basing PE_start, logPE_stride and PE_size */
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#if OSHMEM_GROUP_CACHE_ENABLED == 0
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group = oshmem_proc_group_create(PE_start, (1 << logPE_stride), PE_size);
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if (!group)
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rc = OSHMEM_ERROR;
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#else
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group = find_group_in_cache(PE_start,logPE_stride,PE_size);
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if (!group)
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{
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group = oshmem_proc_group_create(PE_start, (1 << logPE_stride), PE_size);
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if (!group)
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{
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rc = OSHMEM_ERROR;
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}
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else
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{
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cache_group(group,PE_start,logPE_stride,PE_size);
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}
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}
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#endif /* OSHMEM_GROUP_CACHE_ENABLED */
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/* Collective operation call */
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if ( rc == OSHMEM_SUCCESS )
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{
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/* Call barrier operation */
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rc = group->g_scoll.scoll_barrier( group, pSync, SCOLL_DEFAULT_ALG );
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}
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#if OSHMEM_GROUP_CACHE_ENABLED == 0
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if ( rc == OSHMEM_SUCCESS )
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{
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oshmem_proc_group_destroy(group);
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}
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#endif /* OSHMEM_GROUP_CACHE_ENABLED */
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}
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}
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void shmem_barrier_all(void)
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{
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int rc = OSHMEM_SUCCESS;
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#if OSHMEM_SPEC_COMPAT == 1
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/* all outstanding puts must be completed */
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shmem_fence();
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#endif
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if (mca_scoll_sync_array)
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{
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rc = oshmem_group_all->g_scoll.scoll_barrier(oshmem_group_all, mca_scoll_sync_array, SCOLL_DEFAULT_ALG);
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}
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}
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