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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 COPYING file, which can be found at the root of the source code *
* distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases. *
* If you do not have access to either file, you may request a copy from *
* help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/* This source code was developed under the Mochi project
* (https://www.mcs.anl.gov/research/projects/mochi), supported by the U.S.
* Department of Energy, Office of Science, under contract DE-AC02-06CH11357.
*/
#include "h5rados_example.h"
#include <time.h>
int main(int argc, char *argv[]) {
rados_t cluster;
char *pool = "mypool";
hid_t file = -1, dset = -1, fapl = -1;
int buf[4][6];
int i, j;
(void)MPI_Init(&argc, &argv);
/* Seed random number generator */
srand(time(NULL));
if(argc != 3)
PRINTF_ERROR("argc != 3\n");
if(rados_create(&cluster, NULL) < 0)
ERROR;
if(rados_conf_read_file(cluster, CEPH_CONFIG_FILE) < 0)
ERROR;
/* Initialize VOL */
if(H5VLrados_init(cluster, pool) < 0)
ERROR;
/* Set up FAPL */
if((fapl = H5Pcreate(H5P_FILE_ACCESS)) < 0)
ERROR;
if(H5Pset_fapl_rados(fapl, MPI_COMM_WORLD, MPI_INFO_NULL) < 0)
ERROR;
if(H5Pset_all_coll_metadata_ops(fapl, true) < 0)
ERROR;
/* Open file */
if((file = H5Fopen(argv[1], H5F_ACC_RDONLY, fapl)) < 0)
ERROR;
/* Open dataset */
if((dset = H5Dopen2(file, argv[2], H5P_DEFAULT)) < 0)
ERROR;
printf("Reading dataset\n");
/* Initialize buffer */
for(i = 0; i < 4; i++)
for(j = 0; j < 6; j++)
buf[i][j] = -1;
/* Read data */
if(H5Dread(dset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, buf) < 0)
ERROR;
/* Print buffer */
printf("Successfully read data. Buffer is:\n");
for(i = 0; i < 4; i++) {
for(j = 0; j < 6; j++)
printf("%d ", buf[i][j]);
printf("\n");
}
/* Close */
if(H5Dclose(dset) < 0)
ERROR;
if(H5Fclose(file) < 0)
ERROR;
if(H5Pclose(fapl) < 0)
ERROR;
printf("Success\n");
(void)MPI_Finalize();
return 0;
error:
H5E_BEGIN_TRY {
H5Dclose(dset);
H5Fclose(file);
H5Pclose(fapl);
} H5E_END_TRY;
(void)MPI_Finalize();
return 1;
}
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