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-/*
- * Example of using the parallel HDF5 library to access datasets.
- * Last revised: April 24, 2001.
- *
- * This program contains two parts. In the first part, the mpi processes
- * collectively create a new parallel HDF5 file and create two fixed
- * dimension datasets in it. Then each process writes a hyperslab into
- * each dataset in an independent mode. All processes collectively
- * close the datasets and the file.
- * In the second part, the processes collectively open the created file
- * and the two datasets in it. Then each process reads a hyperslab from
- * each dataset in an independent mode and prints them out.
- * All processes collectively close the datasets and the file.
- */
-
-#include <assert.h>
-#include <hdf5.h>
-
-#ifdef H5_HAVE_PARALLEL
-/* Temporary source code */
-#define FAIL -1
-/* temporary code end */
-
-/* Define some handy debugging shorthands, routines, ... */
-/* debugging tools */
-#define MESG(x)\
- if (verbose) printf("%s\n", x);\
-
-#define MPI_BANNER(mesg)\
- {printf("--------------------------------\n");\
- printf("Proc %d: ", mpi_rank); \
- printf("*** %s\n", mesg);\
- printf("--------------------------------\n");}
-
-#define SYNC(comm)\
- {MPI_BANNER("doing a SYNC"); MPI_Barrier(comm); MPI_BANNER("SYNC DONE");}
-/* End of Define some handy debugging shorthands, routines, ... */
-
-/* Constants definitions */
-/* 24 is a multiple of 2, 3, 4, 6, 8, 12. Neat for parallel tests. */
-#define SPACE1_DIM1 24
-#define SPACE1_DIM2 24
-#define SPACE1_RANK 2
-#define DATASETNAME1 "Data1"
-#define DATASETNAME2 "Data2"
-#define DATASETNAME3 "Data3"
-/* hyperslab layout styles */
-#define BYROW 1 /* divide into slabs of rows */
-#define BYCOL 2 /* divide into blocks of columns */
-
-
-/* dataset data type. Int's can be easily octo dumped. */
-typedef int DATATYPE;
-
-/* global variables */
-int nerrors = 0; /* errors count */
-
-int mpi_size, mpi_rank; /* mpi variables */
-
-/* option flags */
-int verbose = 0; /* verbose, default as no. */
-int doread=1; /* read test */
-int dowrite=1; /* write test */
-
-
-
-/*
- * Setup the dimensions of the hyperslab.
- * Two modes--by rows or by columns.
- * Assume dimension rank is 2.
- */
-void
-slab_set(hsize_t start[], hsize_t count[], hsize_t stride[], int mode)
-{
- switch (mode){
- case BYROW:
- /* Each process takes a slabs of rows. */
- stride[0] = 1;
- stride[1] = 1;
- count[0] = SPACE1_DIM1/mpi_size;
- count[1] = SPACE1_DIM2;
- start[0] = mpi_rank*count[0];
- start[1] = 0;
- break;
- case BYCOL:
- /* Each process takes a block of columns. */
- stride[0] = 1;
- stride[1] = 1;
- count[0] = SPACE1_DIM1;
- count[1] = SPACE1_DIM2/mpi_size;
- start[0] = 0;
- start[1] = mpi_rank*count[1];
- break;
- default:
- /* Unknown mode. Set it to cover the whole dataset. */
- printf("unknown slab_set mode (%d)\n", mode);
- stride[0] = 1;
- stride[1] = 1;
- count[0] = SPACE1_DIM1;
- count[1] = SPACE1_DIM2;
- start[0] = 0;
- start[1] = 0;
- break;
- }
-}
-
-
-/*
- * Fill the dataset with trivial data for testing.
- * Assume dimension rank is 2 and data is stored contiguous.
- */
-void
-dataset_fill(hsize_t start[], hsize_t count[], hsize_t stride[], DATATYPE * dataset)
-{
- DATATYPE *dataptr = dataset;
- int i, j;
-
- /* put some trivial data in the data_array */
- for (i=0; i < count[0]; i++){
- for (j=0; j < count[1]; j++){
- *dataptr++ = (i*stride[0]+start[0])*100 + (j*stride[1]+start[1]+1);
- }
- }
-}
-
-
-/*
- * Print the content of the dataset.
- */
-void dataset_print(hsize_t start[], hsize_t count[], hsize_t stride[], DATATYPE * dataset)
-{
- DATATYPE *dataptr = dataset;
- int i, j;
-
- /* print the slab read */
- for (i=0; i < count[0]; i++){
- printf("Row %d: ", (int)(i*stride[0]+start[0]));
- for (j=0; j < count[1]; j++){
- printf("%03d ", *dataptr++);
- }
- printf("\n");
- }
-}
-
-
-/*
- * Print the content of the dataset.
- */
-int dataset_vrfy(hsize_t start[], hsize_t count[], hsize_t stride[], DATATYPE *dataset, DATATYPE *original)
-{
-#define MAX_ERR_REPORT 10 /* Maximum number of errors reported */
- DATATYPE *dataptr = dataset;
- DATATYPE *originptr = original;
-
- int i, j, nerrors;
-
- /* print it if verbose */
- if (verbose)
- dataset_print(start, count, stride, dataset);
-
- nerrors = 0;
- for (i=0; i < count[0]; i++){
- for (j=0; j < count[1]; j++){
- if (*dataset++ != *original++){
- nerrors++;
- if (nerrors <= MAX_ERR_REPORT){
- printf("Dataset Verify failed at [%d][%d](row %d, col %d): expect %d, got %d\n",
- i, j,
- (int)(i*stride[0]+start[0]), (int)(j*stride[1]+start[1]),
- *(dataset-1), *(original-1));
- }
- }
- }
- }
- if (nerrors > MAX_ERR_REPORT)
- printf("[more errors ...]\n");
- if (nerrors)
- printf("%d errors found in dataset_vrfy\n", nerrors);
- return(nerrors);
-}
-
-
-/*
- * Example of using the parallel HDF5 library to create two datasets
- * in one HDF5 files with parallel MPIO access support.
- * The Datasets are of sizes (number-of-mpi-processes x DIM1) x DIM2.
- * Each process controls only a slab of size DIM1 x DIM2 within each
- * dataset.
- */
-
-void
-phdf5writeInd(char *filename)
-{
- hid_t fid1, fid2; /* HDF5 file IDs */
- hid_t acc_tpl1; /* File access templates */
- hid_t sid1,sid2; /* Dataspace ID */
- hid_t file_dataspace; /* File dataspace ID */
- hid_t mem_dataspace; /* memory dataspace ID */
- hid_t dataset1, dataset2; /* Dataset ID */
- int rank = SPACE1_RANK; /* Logical rank of dataspace */
- hsize_t dims1[SPACE1_RANK] =
- {SPACE1_DIM1,SPACE1_DIM2}; /* dataspace dim sizes */
- hsize_t dimslocal1[SPACE1_RANK] =
- {SPACE1_DIM1,SPACE1_DIM2}; /* local dataspace dim sizes */
- DATATYPE data_array1[SPACE1_DIM1][SPACE1_DIM2]; /* data buffer */
-
- hsize_t start[SPACE1_RANK]; /* for hyperslab setting */
- hsize_t count[SPACE1_RANK], stride[SPACE1_RANK]; /* for hyperslab setting */
-
- herr_t ret; /* Generic return value */
- int i, j;
- int mpi_size, mpi_rank;
- char *fname;
- int mrc; /* mpi return code */
-
- MPI_Comm comm = MPI_COMM_WORLD;
- MPI_Info info = MPI_INFO_NULL;
-
- if (verbose)
- printf("Independent write test on file %s\n", filename);
-
- /* set up MPI parameters */
- MPI_Comm_size(MPI_COMM_WORLD,&mpi_size);
- MPI_Comm_rank(MPI_COMM_WORLD,&mpi_rank);
-
- /* -------------------
- * START AN HDF5 FILE
- * -------------------*/
- /* setup file access template with parallel IO access. */
- acc_tpl1 = H5Pcreate (H5P_FILE_ACCESS);
- assert(acc_tpl1 != FAIL);
- MESG("H5Pcreate access succeed");
- /* set Parallel access with communicator */
- ret = H5Pset_fapl_mpio(acc_tpl1, comm, info);
- assert(ret != FAIL);
- MESG("H5Pset_fapl_mpio succeed");
-
- /* create the file collectively */
- fid1=H5Fcreate(filename,H5F_ACC_TRUNC,H5P_DEFAULT,acc_tpl1);
- assert(fid1 != FAIL);
- MESG("H5Fcreate succeed");
-
- /* Release file-access template */
- ret=H5Pclose(acc_tpl1);
- assert(ret != FAIL);
-
-
- /* --------------------------
- * Define the dimensions of the overall datasets
- * and the slabs local to the MPI process.
- * ------------------------- */
- /* setup dimensionality object */
- sid1 = H5Screate_simple (SPACE1_RANK, dims1, NULL);
- assert (sid1 != FAIL);
- MESG("H5Screate_simple succeed");
-
-
- /* create a dataset collectively */
- dataset1 = H5Dcreate(fid1, DATASETNAME1, H5T_NATIVE_INT, sid1,
- H5P_DEFAULT);
- assert(dataset1 != FAIL);
- MESG("H5Dcreate succeed");
-
- /* create another dataset collectively */
- dataset2 = H5Dcreate(fid1, DATASETNAME2, H5T_NATIVE_INT, sid1,
- H5P_DEFAULT);
- assert(dataset2 != FAIL);
- MESG("H5Dcreate succeed");
-
-
-
- /* set up dimensions of the slab this process accesses */
- start[0] = mpi_rank*SPACE1_DIM1/mpi_size;
- start[1] = 0;
- count[0] = SPACE1_DIM1/mpi_size;
- count[1] = SPACE1_DIM2;
- stride[0] = 1;
- stride[1] =1;
-if (verbose)
- printf("start[]=(%d,%d), count[]=(%d,%d), total datapoints=%d\n",
- start[0], start[1], count[0], count[1], count[0]*count[1]);
-
- /* put some trivial data in the data_array */
- dataset_fill(start, count, stride, &data_array1[0][0]);
- MESG("data_array initialized");
-
- /* create a file dataspace independently */
- file_dataspace = H5Dget_space (dataset1);
- assert(file_dataspace != FAIL);
- MESG("H5Dget_space succeed");
- ret=H5Sselect_hyperslab(file_dataspace, H5S_SELECT_SET, start, stride,
- count, NULL);
- assert(ret != FAIL);
- MESG("H5Sset_hyperslab succeed");
-
- /* create a memory dataspace independently */
- mem_dataspace = H5Screate_simple (SPACE1_RANK, count, NULL);
- assert (mem_dataspace != FAIL);
-
- /* write data independently */
- ret = H5Dwrite(dataset1, H5T_NATIVE_INT, mem_dataspace, file_dataspace,
- H5P_DEFAULT, data_array1);
- assert(ret != FAIL);
- MESG("H5Dwrite succeed");
-
- /* write data independently */
- ret = H5Dwrite(dataset2, H5T_NATIVE_INT, mem_dataspace, file_dataspace,
- H5P_DEFAULT, data_array1);
- assert(ret != FAIL);
- MESG("H5Dwrite succeed");
-
- /* release dataspace ID */
- H5Sclose(file_dataspace);
-
- /* close dataset collectively */
- ret=H5Dclose(dataset1);
- assert(ret != FAIL);
- MESG("H5Dclose1 succeed");
- ret=H5Dclose(dataset2);
- assert(ret != FAIL);
- MESG("H5Dclose2 succeed");
-
- /* release all IDs created */
- H5Sclose(sid1);
-
- /* close the file collectively */
- H5Fclose(fid1);
-}
-
-/* Example of using the parallel HDF5 library to read a dataset */
-void
-phdf5readInd(char *filename)
-{
- hid_t fid1, fid2; /* HDF5 file IDs */
- hid_t acc_tpl1; /* File access templates */
- hid_t sid1,sid2; /* Dataspace ID */
- hid_t file_dataspace; /* File dataspace ID */
- hid_t mem_dataspace; /* memory dataspace ID */
- hid_t dataset1, dataset2; /* Dataset ID */
- int rank = SPACE1_RANK; /* Logical rank of dataspace */
- hsize_t dims1[] = {SPACE1_DIM1,SPACE1_DIM2}; /* dataspace dim sizes */
- DATATYPE data_array1[SPACE1_DIM1][SPACE1_DIM2]; /* data buffer */
- DATATYPE data_origin1[SPACE1_DIM1][SPACE1_DIM2]; /* expected data buffer */
-
- hsize_t start[SPACE1_RANK]; /* for hyperslab setting */
- hsize_t count[SPACE1_RANK], stride[SPACE1_RANK]; /* for hyperslab setting */
-
- herr_t ret; /* Generic return value */
- int i, j;
- int mpi_size, mpi_rank;
-
- MPI_Comm comm = MPI_COMM_WORLD;
- MPI_Info info = MPI_INFO_NULL;
-
- if (verbose)
- printf("Independent read test on file %s\n", filename);
-
- /* set up MPI parameters */
- MPI_Comm_size(MPI_COMM_WORLD,&mpi_size);
- MPI_Comm_rank(MPI_COMM_WORLD,&mpi_rank);
-
-
- /* setup file access template */
- acc_tpl1 = H5Pcreate (H5P_FILE_ACCESS);
- assert(acc_tpl1 != FAIL);
- /* set Parallel access with communicator */
- ret = H5Pset_fapl_mpio(acc_tpl1, comm, info);
- assert(ret != FAIL);
-
-
- /* open the file collectively */
- fid1=H5Fopen(filename,H5F_ACC_RDWR,acc_tpl1);
- assert(fid1 != FAIL);
-
- /* Release file-access template */
- ret=H5Pclose(acc_tpl1);
- assert(ret != FAIL);
-
- /* open the dataset1 collectively */
- dataset1 = H5Dopen(fid1, DATASETNAME1);
- assert(dataset1 != FAIL);
-
- /* open another dataset collectively */
- dataset2 = H5Dopen(fid1, DATASETNAME1);
- assert(dataset2 != FAIL);
-
-
- /* set up dimensions of the slab this process accesses */
- start[0] = mpi_rank*SPACE1_DIM1/mpi_size;
- start[1] = 0;
- count[0] = SPACE1_DIM1/mpi_size;
- count[1] = SPACE1_DIM2;
- stride[0] = 1;
- stride[1] =1;
-if (verbose)
- printf("start[]=(%d,%d), count[]=(%d,%d), total datapoints=%d\n",
- start[0], start[1], count[0], count[1], count[0]*count[1]);
-
- /* create a file dataspace independently */
- file_dataspace = H5Dget_space (dataset1);
- assert(file_dataspace != FAIL);
- ret=H5Sselect_hyperslab(file_dataspace, H5S_SELECT_SET, start, stride,
- count, NULL);
- assert(ret != FAIL);
-
- /* create a memory dataspace independently */
- mem_dataspace = H5Screate_simple (SPACE1_RANK, count, NULL);
- assert (mem_dataspace != FAIL);
-
- /* fill dataset with test data */
- dataset_fill(start, count, stride, &data_origin1[0][0]);
-
- /* read data independently */
- ret = H5Dread(dataset1, H5T_NATIVE_INT, mem_dataspace, file_dataspace,
- H5P_DEFAULT, data_array1);
- assert(ret != FAIL);
-
- /* verify the read data with original expected data */
- ret = dataset_vrfy(start, count, stride, &data_array1[0][0], &data_origin1[0][0]);
- assert(ret != FAIL);
-
- /* read data independently */
- ret = H5Dread(dataset2, H5T_NATIVE_INT, mem_dataspace, file_dataspace,
- H5P_DEFAULT, data_array1);
- assert(ret != FAIL);
-
- /* verify the read data with original expected data */
- ret = dataset_vrfy(start, count, stride, &data_array1[0][0], &data_origin1[0][0]);
- assert(ret == 0);
-
- /* close dataset collectively */
- ret=H5Dclose(dataset1);
- assert(ret != FAIL);
- ret=H5Dclose(dataset2);
- assert(ret != FAIL);
-
- /* release all IDs created */
- H5Sclose(file_dataspace);
-
- /* close the file collectively */
- H5Fclose(fid1);
-}
-
-
-/*
- * Example of using the parallel HDF5 library to create two datasets
- * in one HDF5 file with collective parallel access support.
- * The Datasets are of sizes (number-of-mpi-processes x DIM1) x DIM2.
- * Each process controls only a slab of size DIM1 x DIM2 within each
- * dataset. [Note: not so yet. Datasets are of sizes DIM1xDIM2 and
- * each process controls a hyperslab within.]
- */
-
-void
-phdf5writeAll(char *filename)
-{
- hid_t fid1, fid2; /* HDF5 file IDs */
- hid_t acc_tpl1; /* File access templates */
- hid_t xfer_plist; /* Dataset transfer properties list */
- hid_t sid1,sid2; /* Dataspace ID */
- hid_t file_dataspace; /* File dataspace ID */
- hid_t mem_dataspace; /* memory dataspace ID */
- hid_t dataset1, dataset2; /* Dataset ID */
- int rank = SPACE1_RANK; /* Logical rank of dataspace */
- hsize_t dims1[SPACE1_RANK] =
- {SPACE1_DIM1,SPACE1_DIM2}; /* dataspace dim sizes */
- DATATYPE data_array1[SPACE1_DIM1][SPACE1_DIM2]; /* data buffer */
-
- hsize_t start[SPACE1_RANK]; /* for hyperslab setting */
- hsize_t count[SPACE1_RANK], stride[SPACE1_RANK]; /* for hyperslab setting */
-
- herr_t ret; /* Generic return value */
- int mpi_size, mpi_rank;
-
- MPI_Comm comm = MPI_COMM_WORLD;
- MPI_Info info = MPI_INFO_NULL;
-
- if (verbose)
- printf("Collective write test on file %s\n", filename);
-
- /* set up MPI parameters */
- MPI_Comm_size(MPI_COMM_WORLD,&mpi_size);
- MPI_Comm_rank(MPI_COMM_WORLD,&mpi_rank);
-
- /* -------------------
- * START AN HDF5 FILE
- * -------------------*/
- /* setup file access template with parallel IO access. */
- acc_tpl1 = H5Pcreate (H5P_FILE_ACCESS);
- assert(acc_tpl1 != FAIL);
- MESG("H5Pcreate access succeed");
- /* set Parallel access with communicator */
- ret = H5Pset_fapl_mpio(acc_tpl1, comm, info);
- assert(ret != FAIL);
- MESG("H5Pset_fapl_mpio succeed");
-
- /* create the file collectively */
- fid1=H5Fcreate(filename,H5F_ACC_TRUNC,H5P_DEFAULT,acc_tpl1);
- assert(fid1 != FAIL);
- MESG("H5Fcreate succeed");
-
- /* Release file-access template */
- ret=H5Pclose(acc_tpl1);
- assert(ret != FAIL);
-
-
- /* --------------------------
- * Define the dimensions of the overall datasets
- * and create the dataset
- * ------------------------- */
- /* setup dimensionality object */
- sid1 = H5Screate_simple (SPACE1_RANK, dims1, NULL);
- assert (sid1 != FAIL);
- MESG("H5Screate_simple succeed");
-
-
- /* create a dataset collectively */
- dataset1 = H5Dcreate(fid1, DATASETNAME1, H5T_NATIVE_INT, sid1, H5P_DEFAULT);
- assert(dataset1 != FAIL);
- MESG("H5Dcreate succeed");
-
- /* create another dataset collectively */
- dataset2 = H5Dcreate(fid1, DATASETNAME2, H5T_NATIVE_INT, sid1, H5P_DEFAULT);
- assert(dataset2 != FAIL);
- MESG("H5Dcreate 2 succeed");
-
- /*
- * Set up dimensions of the slab this process accesses.
- */
-
- /* Dataset1: each process takes a block of rows. */
- slab_set(start, count, stride, BYROW);
-if (verbose)
- printf("start[]=(%d,%d), count[]=(%d,%d), total datapoints=%d\n",
- start[0], start[1], count[0], count[1], count[0]*count[1]);
-
- /* create a file dataspace independently */
- file_dataspace = H5Dget_space (dataset1);
- assert(file_dataspace != FAIL);
- MESG("H5Dget_space succeed");
- ret=H5Sselect_hyperslab(file_dataspace, H5S_SELECT_SET, start, stride,
- count, NULL);
- assert(ret != FAIL);
- MESG("H5Sset_hyperslab succeed");
-
- /* create a memory dataspace independently */
- mem_dataspace = H5Screate_simple (SPACE1_RANK, count, NULL);
- assert (mem_dataspace != FAIL);
-
- /* fill the local slab with some trivial data */
- dataset_fill(start, count, stride, &data_array1[0][0]);
- MESG("data_array initialized");
- if (verbose){
- MESG("data_array created");
- dataset_print(start, count, stride, &data_array1[0][0]);
- }
-
- /* set up the collective transfer properties list */
- xfer_plist = H5Pcreate (H5P_DATASET_XFER);
- assert(xfer_plist != FAIL);
- ret=H5Pset_dxpl_mpio(xfer_plist, H5FD_MPIO_COLLECTIVE);
- assert(ret != FAIL);
- MESG("H5Pcreate xfer succeed");
-
- /* write data collectively */
- ret = H5Dwrite(dataset1, H5T_NATIVE_INT, mem_dataspace, file_dataspace,
- xfer_plist, data_array1);
- assert(ret != FAIL);
- MESG("H5Dwrite succeed");
-
- /* release all temporary handles. */
- /* Could have used them for dataset2 but it is cleaner */
- /* to create them again.*/
- H5Sclose(file_dataspace);
- H5Sclose(mem_dataspace);
- H5Pclose(xfer_plist);
-
- /* Dataset2: each process takes a block of columns. */
- slab_set(start, count, stride, BYCOL);
-if (verbose)
- printf("start[]=(%d,%d), count[]=(%d,%d), total datapoints=%d\n",
- start[0], start[1], count[0], count[1], count[0]*count[1]);
-
- /* put some trivial data in the data_array */
- dataset_fill(start, count, stride, &data_array1[0][0]);
- MESG("data_array initialized");
- if (verbose){
- MESG("data_array created");
- dataset_print(start, count, stride, &data_array1[0][0]);
- }
-
- /* create a file dataspace independently */
- file_dataspace = H5Dget_space (dataset1);
- assert(file_dataspace != FAIL);
- MESG("H5Dget_space succeed");
- ret=H5Sselect_hyperslab(file_dataspace, H5S_SELECT_SET, start, stride,
- count, NULL);
- assert(ret != FAIL);
- MESG("H5Sset_hyperslab succeed");
-
- /* create a memory dataspace independently */
- mem_dataspace = H5Screate_simple (SPACE1_RANK, count, NULL);
- assert (mem_dataspace != FAIL);
-
- /* fill the local slab with some trivial data */
- dataset_fill(start, count, stride, &data_array1[0][0]);
- MESG("data_array initialized");
- if (verbose){
- MESG("data_array created");
- dataset_print(start, count, stride, &data_array1[0][0]);
- }
-
- /* set up the collective transfer properties list */
- xfer_plist = H5Pcreate (H5P_DATASET_XFER);
- assert(xfer_plist != FAIL);
- ret=H5Pset_dxpl_mpio(xfer_plist, H5FD_MPIO_COLLECTIVE);
- assert(ret != FAIL);
- MESG("H5Pcreate xfer succeed");
-
- /* write data independently */
- ret = H5Dwrite(dataset2, H5T_NATIVE_INT, mem_dataspace, file_dataspace,
- xfer_plist, data_array1);
- assert(ret != FAIL);
- MESG("H5Dwrite succeed");
-
- /* release all temporary handles. */
- H5Sclose(file_dataspace);
- H5Sclose(mem_dataspace);
- H5Pclose(xfer_plist);
-
-
- /*
- * All writes completed. Close datasets collectively
- */
- ret=H5Dclose(dataset1);
- assert(ret != FAIL);
- MESG("H5Dclose1 succeed");
- ret=H5Dclose(dataset2);
- assert(ret != FAIL);
- MESG("H5Dclose2 succeed");
-
- /* release all IDs created */
- H5Sclose(sid1);
-
- /* close the file collectively */
- H5Fclose(fid1);
-}
-
-/*
- * Example of using the parallel HDF5 library to read two datasets
- * in one HDF5 file with collective parallel access support.
- * The Datasets are of sizes (number-of-mpi-processes x DIM1) x DIM2.
- * Each process controls only a slab of size DIM1 x DIM2 within each
- * dataset. [Note: not so yet. Datasets are of sizes DIM1xDIM2 and
- * each process controls a hyperslab within.]
- */
-
-void
-phdf5readAll(char *filename)
-{
- hid_t fid1, fid2; /* HDF5 file IDs */
- hid_t acc_tpl1; /* File access templates */
- hid_t xfer_plist; /* Dataset transfer properties list */
- hid_t sid1,sid2; /* Dataspace ID */
- hid_t file_dataspace; /* File dataspace ID */
- hid_t mem_dataspace; /* memory dataspace ID */
- hid_t dataset1, dataset2; /* Dataset ID */
- int rank = SPACE1_RANK; /* Logical rank of dataspace */
- hsize_t dims1[] = {SPACE1_DIM1,SPACE1_DIM2}; /* dataspace dim sizes */
- DATATYPE data_array1[SPACE1_DIM1][SPACE1_DIM2]; /* data buffer */
- DATATYPE data_origin1[SPACE1_DIM1][SPACE1_DIM2]; /* expected data buffer */
-
- hsize_t start[SPACE1_RANK]; /* for hyperslab setting */
- hsize_t count[SPACE1_RANK], stride[SPACE1_RANK]; /* for hyperslab setting */
-
- herr_t ret; /* Generic return value */
- int mpi_size, mpi_rank;
-
- MPI_Comm comm = MPI_COMM_WORLD;
- MPI_Info info = MPI_INFO_NULL;
-
- if (verbose)
- printf("Collective read test on file %s\n", filename);
-
- /* set up MPI parameters */
- MPI_Comm_size(MPI_COMM_WORLD,&mpi_size);
- MPI_Comm_rank(MPI_COMM_WORLD,&mpi_rank);
-
- /* -------------------
- * OPEN AN HDF5 FILE
- * -------------------*/
- /* setup file access template with parallel IO access. */
- acc_tpl1 = H5Pcreate (H5P_FILE_ACCESS);
- assert(acc_tpl1 != FAIL);
- MESG("H5Pcreate access succeed");
- /* set Parallel access with communicator */
- ret = H5Pset_fapl_mpio(acc_tpl1, comm, info);
- assert(ret != FAIL);
- MESG("H5Pset_fapl_mpio succeed");
-
- /* open the file collectively */
- fid1=H5Fopen(filename,H5F_ACC_RDWR,acc_tpl1);
- assert(fid1 != FAIL);
- MESG("H5Fopen succeed");
-
- /* Release file-access template */
- ret=H5Pclose(acc_tpl1);
- assert(ret != FAIL);
-
-
- /* --------------------------
- * Open the datasets in it
- * ------------------------- */
- /* open the dataset1 collectively */
- dataset1 = H5Dopen(fid1, DATASETNAME1);
- assert(dataset1 != FAIL);
- MESG("H5Dopen succeed");
-
- /* open another dataset collectively */
- dataset2 = H5Dopen(fid1, DATASETNAME1);
- assert(dataset2 != FAIL);
- MESG("H5Dopen 2 succeed");
-
- /*
- * Set up dimensions of the slab this process accesses.
- */
-
- /* Dataset1: each process takes a block of columns. */
- slab_set(start, count, stride, BYCOL);
-if (verbose)
- printf("start[]=(%d,%d), count[]=(%d,%d), total datapoints=%d\n",
- start[0], start[1], count[0], count[1], count[0]*count[1]);
-
- /* create a file dataspace independently */
- file_dataspace = H5Dget_space (dataset1);
- assert(file_dataspace != FAIL);
- MESG("H5Dget_space succeed");
- ret=H5Sselect_hyperslab(file_dataspace, H5S_SELECT_SET, start, stride,
- count, NULL);
- assert(ret != FAIL);
- MESG("H5Sset_hyperslab succeed");
-
- /* create a memory dataspace independently */
- mem_dataspace = H5Screate_simple (SPACE1_RANK, count, NULL);
- assert (mem_dataspace != FAIL);
-
- /* fill dataset with test data */
- dataset_fill(start, count, stride, &data_origin1[0][0]);
- MESG("data_array initialized");
- if (verbose){
- MESG("data_array created");
- dataset_print(start, count, stride, &data_array1[0][0]);
- }
-
- /* set up the collective transfer properties list */
- xfer_plist = H5Pcreate (H5P_DATASET_XFER);
- assert(xfer_plist != FAIL);
- ret=H5Pset_dxpl_mpio(xfer_plist, H5FD_MPIO_COLLECTIVE);
- assert(ret != FAIL);
- MESG("H5Pcreate xfer succeed");
-
- /* read data collectively */
- ret = H5Dread(dataset1, H5T_NATIVE_INT, mem_dataspace, file_dataspace,
- xfer_plist, data_array1);
- assert(ret != FAIL);
- MESG("H5Dread succeed");
-
- /* verify the read data with original expected data */
- ret = dataset_vrfy(start, count, stride, &data_array1[0][0], &data_origin1[0][0]);
- assert(ret != FAIL);
-
- /* release all temporary handles. */
- /* Could have used them for dataset2 but it is cleaner */
- /* to create them again.*/
- H5Sclose(file_dataspace);
- H5Sclose(mem_dataspace);
- H5Pclose(xfer_plist);
-
- /* Dataset2: each process takes a block of rows. */
- slab_set(start, count, stride, BYROW);
-if (verbose)
- printf("start[]=(%d,%d), count[]=(%d,%d), total datapoints=%d\n",
- start[0], start[1], count[0], count[1], count[0]*count[1]);
-
- /* create a file dataspace independently */
- file_dataspace = H5Dget_space (dataset1);
- assert(file_dataspace != FAIL);
- MESG("H5Dget_space succeed");
- ret=H5Sselect_hyperslab(file_dataspace, H5S_SELECT_SET, start, stride,
- count, NULL);
- assert(ret != FAIL);
- MESG("H5Sset_hyperslab succeed");
-
- /* create a memory dataspace independently */
- mem_dataspace = H5Screate_simple (SPACE1_RANK, count, NULL);
- assert (mem_dataspace != FAIL);
-
- /* fill dataset with test data */
- dataset_fill(start, count, stride, &data_origin1[0][0]);
- MESG("data_array initialized");
- if (verbose){
- MESG("data_array created");
- dataset_print(start, count, stride, &data_array1[0][0]);
- }
-
- /* set up the collective transfer properties list */
- xfer_plist = H5Pcreate (H5P_DATASET_XFER);
- assert(xfer_plist != FAIL);
- ret=H5Pset_dxpl_mpio(xfer_plist, H5FD_MPIO_COLLECTIVE);
- assert(ret != FAIL);
- MESG("H5Pcreate xfer succeed");
-
- /* read data independently */
- ret = H5Dread(dataset2, H5T_NATIVE_INT, mem_dataspace, file_dataspace,
- xfer_plist, data_array1);
- assert(ret != FAIL);
- MESG("H5Dread succeed");
-
- /* verify the read data with original expected data */
- ret = dataset_vrfy(start, count, stride, &data_array1[0][0], &data_origin1[0][0]);
- assert(ret != FAIL);
-
- /* release all temporary handles. */
- H5Sclose(file_dataspace);
- H5Sclose(mem_dataspace);
- H5Pclose(xfer_plist);
-
-
- /*
- * All reads completed. Close datasets collectively
- */
- ret=H5Dclose(dataset1);
- assert(ret != FAIL);
- MESG("H5Dclose1 succeed");
- ret=H5Dclose(dataset2);
- assert(ret != FAIL);
- MESG("H5Dclose2 succeed");
-
- /* close the file collectively */
- H5Fclose(fid1);
-}
-
-/*
- * test file access by communicator besides COMM_WORLD.
- * Split COMM_WORLD into two, one (even_comm) contains the original
- * processes of even ranks. The other (odd_comm) contains the original
- * processes of odd ranks. Processes in even_comm creates a file, then
- * cloose it, using even_comm. Processes in old_comm just do a barrier
- * using odd_comm. Then they all do a barrier using COMM_WORLD.
- * If the file creation and cloose does not do correct collective action
- * according to the communicator argument, the processes will freeze up
- * sooner or later due to barrier mixed up.
- */
-void
-test_split_comm_access(char *filenames[])
-{
- int mpi_size, myrank;
- MPI_Comm comm;
- MPI_Info info = MPI_INFO_NULL;
- int color, mrc;
- int newrank, newprocs;
- hid_t fid; /* file IDs */
- hid_t acc_tpl; /* File access properties */
- herr_t ret; /* generic return value */
-
- if (verbose)
- printf("Independent write test on file %s %s\n",
- filenames[0], filenames[1]);
-
- /* set up MPI parameters */
- MPI_Comm_size(MPI_COMM_WORLD,&mpi_size);
- MPI_Comm_rank(MPI_COMM_WORLD,&myrank);
- color = myrank%2;
- mrc = MPI_Comm_split (MPI_COMM_WORLD, color, myrank, &comm);
- assert(mrc==MPI_SUCCESS);
- MPI_Comm_size(comm,&newprocs);
- MPI_Comm_rank(comm,&newrank);
-
- if (color){
- /* odd-rank processes */
- mrc = MPI_Barrier(comm);
- assert(mrc==MPI_SUCCESS);
- }else{
- /* even-rank processes */
- /* setup file access template */
- acc_tpl = H5Pcreate (H5P_FILE_ACCESS);
- assert(acc_tpl != FAIL);
-
- /* set Parallel access with communicator */
- ret = H5Pset_fapl_mpio(acc_tpl, comm, info);
- assert(ret != FAIL);
-
- /* create the file collectively */
- fid=H5Fcreate(filenames[color],H5F_ACC_TRUNC,H5P_DEFAULT,acc_tpl);
- assert(fid != FAIL);
- MESG("H5Fcreate succeed");
-
- /* Release file-access template */
- ret=H5Pclose(acc_tpl);
- assert(ret != FAIL);
-
- ret=H5Fclose(fid);
- assert(ret != FAIL);
- }
- if (myrank == 0){
- mrc = MPI_File_delete(filenames[color], info);
- assert(mrc==MPI_SUCCESS);
- }
-}
-
-/*
- * Show command usage
- */
-void
-usage()
-{
- printf("Usage: testphdf5 [-r] [-w] [-v]\n");
- printf("\t-r\tno read\n");
- printf("\t-w\tno write\n");
- printf("\t-v\tverbose on\n");
- printf("\tdefault do write then read\n");
- printf("\n");
-}
-
-
-/*
- * parse the command line options
- */
-int
-parse_options(int argc, char **argv){
- while (--argc){
- if (**(++argv) != '-'){
- break;
- }else{
- switch(*(*argv+1)){
- case 'r': doread = 0;
- break;
- case 'w': dowrite = 0;
- break;
- case 'v': verbose = 1;
- break;
- default: usage();
- nerrors++;
- return(1);
- }
- }
- }
- return(0);
-}
-
-
-int
-main(int argc, char **argv)
-{
- char *filenames[]={ "ParaEg1.h5f", "ParaEg2.h5f" };
-
- int mpi_namelen;
- char mpi_name[MPI_MAX_PROCESSOR_NAME];
-
- MPI_Init(&argc,&argv);
- MPI_Comm_size(MPI_COMM_WORLD,&mpi_size);
- MPI_Comm_rank(MPI_COMM_WORLD,&mpi_rank);
- MPI_Get_processor_name(mpi_name,&mpi_namelen);
- /* Make sure datasets can be divided into equal chunks by the processes */
- if ((SPACE1_DIM1 % mpi_size) || (SPACE1_DIM2 % mpi_size)){
- printf("DIM1(%d) and DIM2(%d) must be multiples of processes (%d)\n",
- SPACE1_DIM1, SPACE1_DIM2, mpi_size);
- nerrors++;
- goto finish;
- }
-
- if (parse_options(argc, argv) != 0)
- goto finish;
-
- if (dowrite){
- MPI_BANNER("testing PHDF5 dataset using split communicators...");
- test_split_comm_access(filenames);
- MPI_BANNER("testing PHDF5 dataset independent write...");
- phdf5writeInd(filenames[0]);
- MPI_BANNER("testing PHDF5 dataset collective write...");
- phdf5writeAll(filenames[1]);
- }
- if (doread){
- MPI_BANNER("testing PHDF5 dataset independent read...");
- phdf5readInd(filenames[0]);
- MPI_BANNER("testing PHDF5 dataset collective read...");
- phdf5readAll(filenames[1]);
- }
-
- if (!(dowrite || doread)){
- usage();
- nerrors++;
- }
-
-finish:
- if (mpi_rank == 0){ /* only process 0 reports */
- if (nerrors)
- printf("***PHDF5 tests detected %d errors***\n", nerrors);
- else{
- printf("===================================\n");
- printf("PHDF5 tests finished with no errors\n");
- printf("===================================\n");
- }
- }
- MPI_Finalize();
-
- return(nerrors);
-}
-
-#else /* H5_HAVE_PARALLEL */
-/* dummy program since H5_HAVE_PARALLE is not configured in */
-int
-main()
-{
-printf("No PHDF5 example because parallel is not configured in\n");
-return(0);
-}
-#endif /* H5_HAVE_PARALLEL */
generated by cgit v0.12 at 2024-10-30 11:35:21 (GMT)