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/* $Id$ */
#include "testphdf5.h"
#define DIM 2
#define SIZE 32
#define NDATASET 4
#define GROUP_DEPTH 128
void write_dataset(hid_t, hid_t, hid_t);
int read_dataset(hid_t, hid_t, hid_t);
void create_group_recursive(hid_t, hid_t, hid_t, int);
void recursive_read_group(hid_t, hid_t, hid_t, int);
/*
* Example of using PHDF5 to create ndatasets datasets. Each process write
* a slab of array to the file.
*/
void multiple_dset_write(char *filename, int ndatasets)
{
int i, j, n, mpi_size, mpi_rank;
hid_t iof, plist, dataset, memspace, filespace;
hssize_t chunk_origin [DIM];
hsize_t chunk_dims [DIM], file_dims [DIM];
hsize_t count[DIM]={1,1};
double outme [SIZE][SIZE];
char dname [100];
MPI_Comm_rank (MPI_COMM_WORLD, &mpi_rank);
MPI_Comm_size (MPI_COMM_WORLD, &mpi_size);
VRFY((mpi_size <= SIZE), "mpi_size <= SIZE");
chunk_origin [0] = mpi_rank * (SIZE / mpi_size);
chunk_origin [1] = 0;
chunk_dims [0] = SIZE / mpi_size;
chunk_dims [1] = SIZE;
for (i = 0; i < DIM; i++)
file_dims [i] = SIZE;
plist = H5Pcreate (H5P_FILE_ACCESS);
H5Pset_fapl_mpio(plist, MPI_COMM_WORLD, MPI_INFO_NULL);
iof = H5Fcreate (filename, H5F_ACC_TRUNC, H5P_DEFAULT, plist);
H5Pclose (plist);
memspace = H5Screate_simple (DIM, chunk_dims, NULL);
filespace = H5Screate_simple (DIM, file_dims, NULL);
H5Sselect_hyperslab (filespace, H5S_SELECT_SET, chunk_origin, chunk_dims, count, chunk_dims);
for (n = 0; n < ndatasets; n++) {
sprintf (dname, "dataset %d", n);
dataset = H5Dcreate (iof, dname, H5T_NATIVE_DOUBLE, filespace, H5P_DEFAULT);
VRFY((dataset > 0), dname);
/* calculate data to write */
for (i = 0; i < SIZE; i++)
for (j = 0; j < SIZE; j++)
outme [i][j] = n*1000 + mpi_rank;
H5Dwrite (dataset, H5T_NATIVE_DOUBLE, memspace, filespace, H5P_DEFAULT, outme);
H5Dclose (dataset);
if (! ((n+1) % 10)) {
printf("created %d datasets\n", n+1);
MPI_Barrier(MPI_COMM_WORLD);
}
}
H5Sclose (filespace);
H5Sclose (memspace);
H5Fclose (iof);
}
/*
* Example of using PHDF5 to create multiple groups. Under the root group,
* it creates ngroups groups. Under the first group just created, it creates
* recursive subgroups of depth GROUP_DEPTH. In each created group, it
* generates NDATASETS datasets. Each process write a hyperslab of an array
* into the file.
*/
void multiple_group_write(char *filename, int ngroups)
{
int mpi_rank, mpi_size;
int i, j, l, m;
char gname[64];
hid_t fid, gid, plist, memspace, filespace;
hssize_t chunk_origin[DIM];
hsize_t chunk_dims[DIM], file_dims[DIM], count[DIM]={1,1};
MPI_Comm_rank(MPI_COMM_WORLD, &mpi_rank);
MPI_Comm_size(MPI_COMM_WORLD, &mpi_size);
plist = H5Pcreate(H5P_FILE_ACCESS);
H5Pset_fapl_mpio(plist, MPI_COMM_WORLD, MPI_INFO_NULL);
fid = H5Fcreate(filename, H5F_ACC_TRUNC, H5P_DEFAULT, plist);
H5Pclose(plist);
chunk_origin[0] = mpi_rank * (SIZE/mpi_size);
chunk_origin[1] = 0;
chunk_dims[0] = SIZE / mpi_size;
chunk_dims[1] = SIZE;
for(l=0; l<DIM; l++)
file_dims[l] = SIZE;
memspace = H5Screate_simple(DIM, chunk_dims, NULL);
filespace = H5Screate_simple(DIM, file_dims, NULL);
H5Sselect_hyperslab(filespace, H5S_SELECT_SET, chunk_origin, chunk_dims,
count, chunk_dims);
/* creates ngroups groups under the root group, writes datasets in
* parallel. */
for(m = 0; m < ngroups; m++) {
sprintf(gname, "/group%d", m);
gid = H5Gcreate(fid, gname, 0);
VRFY((gid > 0), gname);
if(m != 0)
write_dataset(memspace, filespace, gid);
H5Gclose(gid);
if(! ((m+1) % 10)) {
printf("created %d groups\n", m+1);
MPI_Barrier(MPI_COMM_WORLD);
}
}
/* recursively creates subgroups under the first group. */
gid = H5Gopen(fid, "group0");
create_group_recursive(memspace, filespace, gid, 0);
H5Gclose(gid);
H5Sclose(filespace);
H5Sclose(memspace);
H5Fclose(fid);
}
/*
* In a group, creates NDATASETS datasets. Each process writes a hyperslab
* of a data array to the file.
*/
void write_dataset(hid_t memspace, hid_t filespace, hid_t gid)
{
int i, j, n;
int mpi_rank;
char dname[32];
DATATYPE outme[SIZE][SIZE];
hid_t did;
MPI_Comm_rank(MPI_COMM_WORLD, &mpi_rank);
for(n=0; n < NDATASET; n++) {
sprintf(dname, "dataset%d", n);
did = H5Dcreate(gid, dname, H5T_NATIVE_DOUBLE, filespace,
H5P_DEFAULT);
VRFY((did > 0), dname);
for(i=0; i < SIZE; i++)
for(j=0; j < SIZE; j++)
outme[i][j] = n*1000 + mpi_rank;
H5Dwrite(did, H5T_NATIVE_DOUBLE, memspace, filespace, H5P_DEFAULT,
outme);
H5Dclose(did);
}
}
/*
* Creates subgroups of depth GROUP_DEPTH recursively. Also writes datasets
* in parallel in each group.
*/
void create_group_recursive(hid_t memspace, hid_t filespace, hid_t gid,
int counter)
{
hid_t child_gid;
int mpi_rank;
char gname[64];
MPI_Comm_rank(MPI_COMM_WORLD, &mpi_rank);
if(! ((counter+1) % 10)) {
printf("created %dth child groups\n", counter+1);
MPI_Barrier(MPI_COMM_WORLD);
}
sprintf(gname, "%dth_child_group", counter+1);
child_gid = H5Gcreate(gid, gname, 0);
VRFY((child_gid > 0), gname);
/* write datasets in parallel. */
write_dataset(memspace, filespace, gid);
if( counter < GROUP_DEPTH )
create_group_recursive(memspace, filespace, child_gid, counter+1);
H5Gclose(child_gid);
}
/*
* This function is to verify the data from multiple group testing. It opens
* every dataset in every group and check their correctness.
*/
void multiple_group_read(char *filename, int ngroups)
{
int mpi_rank, mpi_size, error_num;
int l, m;
char gname[64];
hid_t plist, fid, gid, memspace, filespace;
hssize_t chunk_origin[DIM];
hsize_t chunk_dims[DIM], file_dims[DIM], count[DIM]={1,1};
MPI_Comm_rank(MPI_COMM_WORLD, &mpi_rank);
MPI_Comm_size(MPI_COMM_WORLD, &mpi_size);
plist = H5Pcreate(H5P_FILE_ACCESS);
H5Pset_fapl_mpio(plist, MPI_COMM_WORLD, MPI_INFO_NULL);
fid = H5Fopen(filename, H5F_ACC_RDONLY, plist);
H5Pclose(plist);
chunk_origin[0] = mpi_rank * (SIZE/mpi_size);
chunk_origin[1] = 0;
chunk_dims[0] = SIZE / mpi_size;
chunk_dims[1] = SIZE;
for(l=0; l<DIM; l++)
file_dims[l] = SIZE;
memspace = H5Screate_simple(DIM, chunk_dims, NULL);
filespace = H5Screate_simple(DIM, file_dims, NULL);
H5Sselect_hyperslab(filespace, H5S_SELECT_SET, chunk_origin, chunk_dims,
count, chunk_dims);
/* open every group under root group. */
for(m=0; m<ngroups; m++) {
sprintf(gname, "/group%d", m);
gid = H5Gopen(fid, gname);
VRFY((gid > 0), gname);
/* check the data. */
if(m != 0)
if( error_num = read_dataset(memspace, filespace, gid) )
nerrors += error_num;
H5Gclose(gid);
if(!((m+1)%10))
MPI_Barrier(MPI_COMM_WORLD);
}
/* open all the groups in vertical direction. */
gid = H5Gopen(fid, "group0");
VRFY((gid>0), "group0");
recursive_read_group(memspace, filespace, gid, 0);
H5Gclose(gid);
H5Sclose(filespace);
H5Sclose(memspace);
H5Fclose(fid);
}
/*
* This function opens all the datasets in a certain, checks the data using
* dataset_vrfy function.
*/
int read_dataset(hid_t memspace, hid_t filespace, hid_t gid)
{
int i, j, n, mpi_rank, vrfy_errors=0;
char dname[32];
DATATYPE outdata[SIZE][SIZE], indata[SIZE][SIZE];
hid_t did;
hsize_t block[DIM]={SIZE,SIZE};
MPI_Comm_rank(MPI_COMM_WORLD, &mpi_rank);
for(n=0; n<NDATASET; n++) {
sprintf(dname, "dataset%d", n);
did = H5Dopen(gid, dname);
VRFY((did>0), dname);
H5Dread(did, H5T_NATIVE_DOUBLE, memspace, filespace, H5P_DEFAULT,
indata);
for(i=0; i<SIZE; i++)
for(j=0; j<SIZE; j++)
outdata[i][j] = n*1000 + mpi_rank;
vrfy_errors = dataset_vrfy(NULL, NULL, NULL, block, indata, outdata);
H5Dclose(did);
}
return vrfy_errors;
}
/*
* This recursive function opens all the groups in vertical direction and
* checks the data.
*/
void recursive_read_group(hid_t memspace, hid_t filespace, hid_t gid,
int counter)
{
hid_t child_gid;
int mpi_rank, err_num=0;
char gname[64];
MPI_Comm_rank(MPI_COMM_WORLD, &mpi_rank);
if((counter+1) % 10)
MPI_Barrier(MPI_COMM_WORLD);
if( (err_num = read_dataset(memspace, filespace, gid)) )
nerrors += err_num;
if( counter < GROUP_DEPTH ) {
sprintf(gname, "%dth_child_group", counter+1);
child_gid = H5Gopen(gid, gname);
VRFY((child_gid>0), gname);
recursive_read_group(memspace, filespace, child_gid, counter+1);
H5Gclose(child_gid);
}
}
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