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#include "h5rados_example.h"
int main(int argc, char *argv[]) {
rados_t cluster;
char *pool = "mypool";
hid_t file = -1, dset = -1, file_space = -1, mem_space = -1, fapl = -1;
hsize_t dims[2] = {4, 6};
hsize_t fstart[2], count[2], mstart[2];
int buf[4][6];
int i, j;
(void)MPI_Init(&argc, &argv);
if(argc != 9)
PRINTF_ERROR("argc != 9\n");
fstart[0] = (hsize_t)atoi(argv[3]);
fstart[1] = (hsize_t)atoi(argv[4]);
count[0] = (hsize_t)atoi(argv[5]);
count[1] = (hsize_t)atoi(argv[6]);
mstart[0] = (hsize_t)atoi(argv[7]);
mstart[1] = (hsize_t)atoi(argv[8]);
if(rados_create(&cluster, NULL) < 0)
ERROR;
if(rados_conf_read_file(cluster, "ceph.conf") < 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_RDWR, fapl)) < 0)
ERROR;
/* Open dataset */
if((dset = H5Dopen2(file, argv[2], H5P_DEFAULT)) < 0)
ERROR;
printf("Selecting elements denoted with X\n");
printf("File:\n");
for(i = 0; i < 4; i++) {
if((i >= fstart[0]) && (i < fstart[0] + count[0])) {
for(j = 0; j < 6; j++)
if((j >= fstart[1]) && (j < fstart[1] + count[1]))
printf("X");
else
printf(".");
printf("\n");
}
else
printf("......\n");
}
printf("\nMemory:\n");
for(i = 0; i < 4; i++) {
if((i >= mstart[0]) && (i < mstart[0] + count[0])) {
for(j = 0; j < 6; j++)
if((j >= mstart[1]) && (j < mstart[1] + count[1]))
printf("X");
else
printf(".");
printf("\n");
}
else
printf("......\n");
}
/* Set up dataspaces */
if((file_space = H5Screate_simple(2, dims, NULL)) < 0)
ERROR;
if((mem_space = H5Screate_simple(2, dims, NULL)) < 0)
ERROR;
if(H5Sselect_hyperslab(file_space, H5S_SELECT_SET, fstart, NULL, count, NULL) < 0)
ERROR;
if(H5Sselect_hyperslab(mem_space, H5S_SELECT_SET, mstart, NULL, count, NULL) < 0)
ERROR;
/* 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, mem_space, file_space, H5P_DEFAULT, buf) < 0)
ERROR;
/* Fill and 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(H5Sclose(file_space) < 0)
ERROR;
if(H5Sclose(mem_space) < 0)
ERROR;
if(H5Pclose(fapl) < 0)
ERROR;
printf("Success\n");
(void)MPI_Finalize();
return 0;
error:
H5E_BEGIN_TRY {
H5Dclose(dset);
H5Fclose(file);
H5Sclose(file_space);
H5Sclose(mem_space);
H5Pclose(fapl);
} H5E_END_TRY;
(void)MPI_Finalize();
return 1;
}
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