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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
/*
* Copyright (c) 2004-2005 The Trustees of Indiana University.
* All rights reserved.
* Copyright (c) 2004-2006 The Trustees of the University of Tennessee.
* 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) 2016-2021 IBM Corporation. All rights reserved.
* Copyright (c) 2016-2017 IBM Corporation. All rights reserved.
* Copyright (c) 2018 Triad National Security, LLC. All rights
* reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
/** @file:
*/
#ifndef OMPI_MCA_OSC_BASE_H
#define OMPI_MCA_OSC_BASE_H
#include "ompi_config.h"
#include "ompi/info/info.h"
#include "ompi/communicator/communicator.h"
#include "ompi/win/win.h"
#include "opal/mca/base/base.h"
/*
* Global functions for MCA overall collective open and close
*/
BEGIN_C_DECLS
/*
* function definitions
*/
int ompi_osc_base_find_available(bool enable_progress_threads,
bool enable_mpi_threads);
void ompi_osc_base_set_memory_alignment(struct opal_info_t *info,
size_t *memory_alignment);
int ompi_osc_base_select(ompi_win_t *win,
void **base,
size_t size,
int disp_unit,
ompi_communicator_t *comm,
int flavor,
int *model);
OMPI_DECLSPEC extern mca_base_framework_t ompi_osc_base_framework;
/* Helper to check whether osc can support atomic operation on the size the operands
* Currently used with rdma and ucx.
*/
static inline __opal_attribute_always_inline__ bool ompi_osc_base_is_atomic_size_supported(uint64_t remote_addr,
size_t size)
{
return ((sizeof(uint32_t) == size && !(remote_addr & 0x3)) ||
(sizeof(uint64_t) == size && !(remote_addr & 0x7)));
}
END_C_DECLS
#endif
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