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
|
/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
/*
*
* Copyright (C) 1997 University of Chicago.
* See COPYRIGHT notice in top-level directory.
*/
#include "ad_pfs.h"
void ADIOI_PFS_SetInfo(ADIO_File fd, MPI_Info users_info, int *error_code)
{
char *value, *value_in_fd;
int flag, tmp_val, str_factor=-1, str_unit=-1, start_iodev=-1;
struct sattr attr;
int err, myrank, fd_sys, perm, amode, old_mask;
if ( (fd->info) == MPI_INFO_NULL) {
/* This must be part of the open call. can set striping parameters
if necessary. */
MPI_Info_create(&(fd->info));
/* has user specified striping or server buffering parameters
and do they have the same value on all processes? */
if (users_info != MPI_INFO_NULL) {
value = (char *) ADIOI_Malloc((MPI_MAX_INFO_VAL+1)*sizeof(char));
ADIOI_Info_get(users_info, "striping_factor", MPI_MAX_INFO_VAL,
value, &flag);
if (flag) {
str_factor=atoi(value);
tmp_val = str_factor;
MPI_Bcast(&tmp_val, 1, MPI_INT, 0, fd->comm);
/* --BEGIN ERROR HANDLING-- */
if (tmp_val != str_factor) {
MPIO_ERR_CREATE_CODE_INFO_NOT_SAME(myname,
"striping_factor",
error_code);
return;
}
/* --END ERROR HANDLING-- */
}
ADIOI_Info_get(users_info, "striping_unit", MPI_MAX_INFO_VAL,
value, &flag);
if (flag) {
str_unit=atoi(value);
tmp_val = str_unit;
MPI_Bcast(&tmp_val, 1, MPI_INT, 0, fd->comm);
/* --BEGIN ERROR HANDLING-- */
if (tmp_val != str_unit) {
MPIO_ERR_CREATE_CODE_INFO_NOT_SAME(myname,
"striping_unit",
error_code);
return;
}
/* --END ERROR HANDLING-- */
}
ADIOI_Info_get(users_info, "start_iodevice", MPI_MAX_INFO_VAL,
value, &flag);
if (flag) {
start_iodev=atoi(value);
tmp_val = start_iodev;
MPI_Bcast(&tmp_val, 1, MPI_INT, 0, fd->comm);
/* --BEGIN ERROR HANDLING-- */
if (tmp_val != start_iodev) {
MPIO_ERR_CREATE_CODE_INFO_NOT_SAME(myname,
"start_iodevice",
error_code);
return;
}
/* --END ERROR HANDLING-- */
}
/* if user has specified striping info, process 0 tries to set it */
if ((str_factor > 0) || (str_unit > 0) || (start_iodev >= 0)) {
MPI_Comm_rank(fd->comm, &myrank);
if (!myrank) {
if (fd->perm == ADIO_PERM_NULL) {
old_mask = umask(022);
umask(old_mask);
perm = old_mask ^ 0666;
}
else perm = fd->perm;
amode = 0;
if (fd->access_mode & ADIO_CREATE)
amode = amode | O_CREAT;
if (fd->access_mode & ADIO_RDONLY)
amode = amode | O_RDONLY;
if (fd->access_mode & ADIO_WRONLY)
amode = amode | O_WRONLY;
if (fd->access_mode & ADIO_RDWR)
amode = amode | O_RDWR;
if (fd->access_mode & ADIO_EXCL)
amode = amode | O_EXCL;
fd_sys = open(fd->filename, amode, perm);
err = fcntl(fd_sys, F_GETSATTR, &attr);
if (!err) {
if (str_unit > 0) attr.s_sunitsize = str_unit;
if ((start_iodev >= 0) &&
(start_iodev < attr.s_sfactor))
attr.s_start_sdir = start_iodev;
if ((str_factor > 0) && (str_factor < attr.s_sfactor))
attr.s_sfactor = str_factor;
err = fcntl(fd_sys, F_SETSATTR, &attr);
}
close(fd_sys);
}
MPI_Barrier(fd->comm);
}
/* Has user asked for pfs server buffering to be turned on?
If so, mark it as true in fd->info and turn it on in
ADIOI_PFS_Open after the file is opened */
ADIOI_Info_get(users_info, "pfs_svr_buf", MPI_MAX_INFO_VAL,
value, &flag);
if (flag && (!strcmp(value, "true")))
ADIOI_Info_set(fd->info, "pfs_svr_buf", "true");
else ADIOI_Info_set(fd->info, "pfs_svr_buf", "false");
ADIOI_Free(value);
}
else ADIOI_Info_set(fd->info, "pfs_svr_buf", "false");
/* set the values for collective I/O and data sieving parameters */
ADIOI_GEN_SetInfo(fd, users_info, error_code);
}
else {
/* The file has been opened previously and fd->fd_sys is a valid
file descriptor. cannot set striping parameters now. */
/* set the values for collective I/O and data sieving parameters */
ADIOI_GEN_SetInfo(fd, users_info, error_code);
/* has user specified value for pfs_svr_buf? */
if (users_info != MPI_INFO_NULL) {
value = (char *) ADIOI_Malloc((MPI_MAX_INFO_VAL+1)*sizeof(char));
ADIOI_Info_get(users_info, "pfs_svr_buf", MPI_MAX_INFO_VAL,
value, &flag);
if (flag && (!strcmp(value, "true") || !strcmp(value, "false"))) {
value_in_fd = (char *)
ADIOI_Malloc((MPI_MAX_INFO_VAL+1)*sizeof(char));
ADIOI_Info_get(fd->info, "pfs_svr_buf", MPI_MAX_INFO_VAL,
value_in_fd, &flag);
if (strcmp(value, value_in_fd)) {
if (!strcmp(value, "true")) {
err = fcntl(fd->fd_sys, F_PFS_SVR_BUF, TRUE);
if (!err)
ADIOI_Info_set(fd->info, "pfs_svr_buf", "true");
}
else {
err = fcntl(fd->fd_sys, F_PFS_SVR_BUF, FALSE);
if (!err)
ADIOI_Info_set(fd->info, "pfs_svr_buf", "false");
}
}
ADIOI_Free(value_in_fd);
}
ADIOI_Free(value);
}
}
*error_code = MPI_SUCCESS;
}
|
