int main (int argc, char ** argv)
{
int err;
MPI_Init (&argc, &argv);
MPI_Comm_rank (comm, &rank);
MPI_Comm_size (comm, &size);
init_vars();
adios_init_noxml (comm);
err = adios_read_init_method(ADIOS_READ_METHOD_BP, comm, "verbose=2");
if (err) {
printE ("%s\n", adios_errmsg());
}
if (!err)
err = declare_group ();
if (!err)
err = write_file ("reuse_dim.bp");
if (!err)
err = read_file ("reuse_dim.bp");
adios_finalize (rank);
fini_vars();
MPI_Finalize ();
return err;
}
int main (int argc, char ** argv)
{
int err, step ;
int do_write = 1;
int do_read = 1;
int m = 0;
char write_method[16];
MPI_Init (&argc, &argv);
MPI_Comm_rank (comm, &rank);
MPI_Comm_size (comm, &size);
if (argc > 1) {
m = strtol (argv[1], NULL, 10);
if (errno) { printf("Invalid 1st argument %s\n", argv[1]); Usage(); return 1;}
}
if (argc > 2) {
if (argv[2][0] == 'w' || argv[2][0] == 'W') {
do_read = 0;
} else if (argv[2][0] == 'r' || argv[2][0] == 'R') {
do_write = 0;
} else {
printE ("Invalid command line argument %s. Allowed ones:\n"
" w: do write only\n"
" r: do read only\n", argv[2]);
MPI_Finalize ();
return 1;
}
}
if (m==0) {
read_method = ADIOS_READ_METHOD_BP;
strcpy(write_method,"MPI");
} else {
read_method = ADIOS_READ_METHOD_DATASPACES;
strcpy(write_method,"DATASPACES");
}
log ("Writing: %s method=%s\n"
"Reading: %s method=%d\n",
(do_write ? "yes" : "no"), write_method,
(do_read ? "yes" : "no"), read_method);
alloc_vars();
if (do_write) {
adios_init_noxml (comm);
adios_allocate_buffer (ADIOS_BUFFER_ALLOC_NOW, 10);
}
if (do_read) {
err = adios_read_init_method(read_method, comm, "verbose=2");
if (err) {
printE ("%s\n", adios_errmsg());
}
}
if (do_write) {
adios_declare_group (&m_adios_group, "selections", "iter", adios_flag_yes);
adios_select_method (m_adios_group, write_method, "verbose=2", "");
define_vars();
for (step=0; step<NSTEPS; step++) {
if (!err) {
set_vars (step);
err = write_file (step);
sleep(1);
}
}
adios_free_group (m_adios_group);
}
if (!err && do_read)
err = read_points ();
//if (!err && do_read)
// err = read_writerblocks ();
if (do_read) {
adios_read_finalize_method (read_method);
}
fini_vars();
if (do_write) {
adios_finalize (rank);
}
MPI_Finalize ();
return err;
}
int main (int argc, char ** argv)
{
int err,i,M;
int iconnect;
MPI_Init (&argc, &argv);
MPI_Comm_rank (wcomm, &wrank);
MPI_Comm_size (wcomm, &wsize);
if (argc < 2) { Usage(); return 1; }
errno = 0;
M = strtol (argv[1], NULL, 10);
if (errno || M < 1 || M > wsize) {
printE("Invalid 1st argument %s\n", argv[1]); Usage(); return 1;
}
iconnect = (wrank >= wsize-M); // connect to server from ranks N-M, N-M+1, ..., N
MPI_Comm_split (wcomm, iconnect, wrank+M-wsize, &subcomm);
MPI_Comm_rank (subcomm, &subrank);
MPI_Comm_size (subcomm, &subsize);
if (iconnect) {
if (subsize != M) {
printE ("Something wrong with communicator split: N=%d, M=%d, splitted size=%d\n",
wsize, M, subsize);
return 2;
}
log ("connect as subrank %d\n", subrank);
}
alloc_vars();
adios_read_init_method(ADIOS_READ_METHOD_DATASPACES, subcomm, "verbose=4");
adios_init_noxml (subcomm);
adios_allocate_buffer (ADIOS_BUFFER_ALLOC_NOW, 1);
if (iconnect)
{
adios_declare_group (&m_adios_group, "connect", "iter", adios_flag_yes);
adios_select_method (m_adios_group, "DATASPACES", "verbose=4", "");
adios_define_var (m_adios_group, "ldim1", "", adios_integer, 0, 0, 0);
adios_define_var (m_adios_group, "gdim1", "", adios_integer, 0, 0, 0);
adios_define_var (m_adios_group, "offs1", "", adios_integer, 0, 0, 0);
adios_define_var (m_adios_group, "a1", "", adios_integer,
"ldim1", "gdim1", "offs1");
for (i=0; i<NSTEPS; i++) {
if (!err) {
set_vars (i);
err = write_file (i);
}
}
}
log ("done with work, sync with others...\n");
MPI_Barrier (wcomm);
log ("call adios_finalize...\n");
adios_finalize (wrank);
log ("call adios_read_finalize_method...\n");
adios_read_finalize_method (ADIOS_READ_METHOD_DATASPACES);
fini_vars();
MPI_Finalize ();
return err;
}
