summaryrefslogtreecommitdiffstats
path: root/src/H5Fmpi.c
blob: 9f7d316a6acccb69f1d907f6ca836277a139b244 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * 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 */
/****************/

#define H5F_PACKAGE		/*suppress error about including H5Fpkg	  */


/***********/
/* 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_get_mpi_handle
 *
 * Purpose:     Retrieves MPI File handle.
 *
 * Return:      Success:        The size (positive)
 *              Failure:        Negative
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5F_get_mpi_handle(const H5F_t *f, MPI_File **f_handle)
{
    herr_t ret_value = SUCCEED;
    hid_t fapl = -1;

    FUNC_ENTER_NOAPI(FAIL)

    assert(f && f->shared);

    /* Dispatch to driver */
    if ((ret_value = H5FD_get_vfd_handle(f->shared->lf, fapl, (void **)f_handle)) < 0)
        HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "can't get mpi file handle")

done:
    FUNC_LEAVE_NOAPI(ret_value)
} /* end H5F_get_mpi_handle() */


/*-------------------------------------------------------------------------
 * 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)
}
#endif /* H5_HAVE_PARALLEL */