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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by The HDF Group. *
* Copyright by the Board of Trustees of the University of Illinois. *
* All rights reserved. *
* *
* This file is part of HDF5. The full HDF5 copyright notice, including *
* terms governing use, modification, and redistribution, is contained in *
* the files COPYING and Copyright.html. COPYING can be found at the root *
* of the source code distribution tree; Copyright.html can be found at the *
* root level of an installed copy of the electronic HDF5 document set and *
* is linked from the top-level documents page. It can also be found at *
* http://hdfgroup.org/HDF5/doc/Copyright.html. If you do not have *
* access to either file, you may request a copy from help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*-------------------------------------------------------------------------
*
* Created: H5Fmpi.c
* Jan 10 2008
* Quincey Koziol <koziol@hdfgroup.org>
*
* Purpose: MPI-related routines.
*
*-------------------------------------------------------------------------
*/
/****************/
/* Module Setup */
/****************/
#include "H5Fmodule.h" /* This source code file is part of the H5F module */
/***********/
/* Headers */
/***********/
#include "H5private.h" /* Generic Functions */
#include "H5Eprivate.h" /* Error handling */
#include "H5Fpkg.h" /* File access */
#include "H5FDprivate.h" /* File drivers */
#include "H5Iprivate.h" /* IDs */
/****************/
/* Local Macros */
/****************/
/******************/
/* Local Typedefs */
/******************/
/********************/
/* Package Typedefs */
/********************/
/********************/
/* Local Prototypes */
/********************/
/*********************/
/* Package Variables */
/*********************/
/*****************************/
/* Library Private Variables */
/*****************************/
/*******************/
/* Local Variables */
/*******************/
#ifdef H5_HAVE_PARALLEL
/*-------------------------------------------------------------------------
* Function: H5F_mpi_get_rank
*
* Purpose: Retrieves the rank of an MPI process.
*
* Return: Success: The rank (non-negative)
*
* Failure: Negative
*
* Programmer: Quincey Koziol
* Friday, January 30, 2004
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
int
H5F_mpi_get_rank(const H5F_t *f)
{
int ret_value;
FUNC_ENTER_NOAPI(FAIL)
HDassert(f && f->shared);
/* Dispatch to driver */
if ((ret_value=H5FD_mpi_get_rank(f->shared->lf)) < 0)
HGOTO_ERROR(H5E_VFL, H5E_CANTGET, FAIL, "driver get_rank request failed")
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5F_mpi_get_rank() */
/*-------------------------------------------------------------------------
* Function: H5F_mpi_get_comm
*
* Purpose: Retrieves the file's communicator
*
* Return: Success: The communicator (non-negative)
*
* Failure: Negative
*
* Programmer: Quincey Koziol
* Friday, January 30, 2004
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
MPI_Comm
H5F_mpi_get_comm(const H5F_t *f)
{
MPI_Comm ret_value;
FUNC_ENTER_NOAPI(MPI_COMM_NULL)
HDassert(f && f->shared);
/* Dispatch to driver */
if ((ret_value=H5FD_mpi_get_comm(f->shared->lf))==MPI_COMM_NULL)
HGOTO_ERROR(H5E_VFL, H5E_CANTGET, MPI_COMM_NULL, "driver get_comm request failed")
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5F_mpi_get_comm() */
/*-------------------------------------------------------------------------
* Function: H5F_mpi_get_size
*
* Purpose: Retrieves the size of an MPI process.
*
* Return: Success: The size (positive)
*
* Failure: Negative
*
* Programmer: John Mainzer
* Friday, May 6, 2005
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
int
H5F_mpi_get_size(const H5F_t *f)
{
int ret_value;
FUNC_ENTER_NOAPI(FAIL)
HDassert(f && f->shared);
/* Dispatch to driver */
if ((ret_value=H5FD_mpi_get_size(f->shared->lf)) < 0)
HGOTO_ERROR(H5E_VFL, H5E_CANTGET, FAIL, "driver get_size request failed")
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5F_mpi_get_size() */
/*-------------------------------------------------------------------------
* Function: H5Fset_mpi_atomicity
*
* Purpose: Sets the atomicity mode
*
* Return: Success: Non-negative
*
* Failure: Negative
*
* Programmer: Mohamad Chaarawi
* Feb 14, 2012
*
*-------------------------------------------------------------------------
*/
herr_t
H5Fset_mpi_atomicity(hid_t file_id, hbool_t flag)
{
H5F_t *file;
herr_t ret_value = SUCCEED;
FUNC_ENTER_API(FAIL)
H5TRACE2("e", "ib", file_id, flag);
/* Check args */
if(NULL == (file = (H5F_t *)H5I_object_verify(file_id, H5I_FILE)))
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "not a file ID")
/* Check VFD */
if(!H5F_HAS_FEATURE(file, H5FD_FEAT_HAS_MPI))
HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, FAIL, "incorrect VFL driver, does not support MPI atomicity mode")
/* set atomicity value */
if (H5FD_set_mpio_atomicity (file->shared->lf, flag) < 0)
HGOTO_ERROR(H5E_FILE, H5E_CANTSET, FAIL, "can't set atomicity flag")
done:
FUNC_LEAVE_API(ret_value)
}
/*-------------------------------------------------------------------------
* Function: H5Fget_mpi_atomicity
*
* Purpose: Returns the atomicity mode
*
* Return: Success: Non-negative
*
* Failure: Negative
*
* Programmer: Mohamad Chaarawi
* Feb 14, 2012
*
*-------------------------------------------------------------------------
*/
herr_t
H5Fget_mpi_atomicity(hid_t file_id, hbool_t *flag)
{
H5F_t *file;
herr_t ret_value = SUCCEED;
FUNC_ENTER_API(FAIL)
H5TRACE2("e", "i*b", file_id, flag);
/* Check args */
if(NULL == (file = (H5F_t *)H5I_object_verify(file_id, H5I_FILE)))
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "not a file ID")
/* Check VFD */
if(!H5F_HAS_FEATURE(file, H5FD_FEAT_HAS_MPI))
HGOTO_ERROR(H5E_FILE, H5E_BADVALUE, FAIL, "incorrect VFL driver, does not support MPI atomicity mode")
/* get atomicity value */
if (H5FD_get_mpio_atomicity (file->shared->lf, flag) < 0)
HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "can't get atomicity flag")
done:
FUNC_LEAVE_API(ret_value)
}
/*-------------------------------------------------------------------------
* Function: H5F_mpi_retrieve_comm
*
* Purpose: Retrieves an MPI communicator from the file the location ID
* is in. If the loc_id is invalid, the fapl_id is used to
* retrieve the communicator.
*
* Return: Success: Non-negative
*
* Failure: Negative
*
* Programmer: Mohamad Chaarawi
* Feb 14, 2012
*
*-------------------------------------------------------------------------
*/
herr_t
H5F_mpi_retrieve_comm(hid_t loc_id, hid_t acspl_id, MPI_Comm *mpi_comm)
{
herr_t ret_value = SUCCEED;
FUNC_ENTER_NOAPI(FAIL)
HDassert(mpi_comm);
*mpi_comm = MPI_COMM_NULL;
/* if the loc_id is valid, then get the comm from the file
attached to the loc_id */
if(H5I_INVALID_HID != loc_id) {
H5G_loc_t loc;
H5F_t *f = NULL;
/* retrieve the file structure */
if(H5G_loc(loc_id, &loc) < 0)
HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a location")
f = loc.oloc->file;
HDassert(f);
/* check if MPIO driver is used */
if(H5F_HAS_FEATURE(f, H5FD_FEAT_HAS_MPI)) {
/* retrieve the file communicator */
if(MPI_COMM_NULL == (*mpi_comm = H5F_mpi_get_comm(f)))
HGOTO_ERROR(H5E_VFL, H5E_CANTGET, FAIL, "can't get MPI communicator")
}
}
/* otherwise, this if from H5Fopen or H5Fcreate and has to be collective */
else {
H5P_genplist_t *plist; /* Property list pointer */
HDassert(H5P_isa_class(acspl_id, H5P_FILE_ACCESS));
if(NULL == (plist = H5P_object_verify(acspl_id, H5P_FILE_ACCESS)))
HGOTO_ERROR(H5E_PLIST, H5E_BADTYPE, FAIL, "not a file access list")
if(H5FD_MPIO == H5P_peek_driver(plist)) {
const H5FD_mpio_fapl_t *fa; /* MPIO fapl info */
if(NULL == (fa = (const H5FD_mpio_fapl_t *)H5P_peek_driver_info(plist)))
HGOTO_ERROR(H5E_PLIST, H5E_BADVALUE, FAIL, "bad VFL driver info")
*mpi_comm = fa->comm;
}
}
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5F_mpi_retrieve_comm */
#endif /* H5_HAVE_PARALLEL */
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