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-rw-r--r--testpar/t_mdset.c265
1 files changed, 265 insertions, 0 deletions
diff --git a/testpar/t_mdset.c b/testpar/t_mdset.c
index 1bbe299..dab37e2 100644
--- a/testpar/t_mdset.c
+++ b/testpar/t_mdset.c
@@ -1,8 +1,21 @@
+/* $Id$ */
+
#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;
@@ -59,3 +72,255 @@ void multiple_dset_write(char *filename, int ndatasets)
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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