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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 files COPYING and Copyright.html. COPYING can be found at the root *
+ * of the source code distribution tree; Copyright.html can be found at the *
+ * root level of an installed copy of the electronic HDF5 document set and *
+ * is linked from the top-level documents page. It can also be found at *
+ * http://hdfgroup.org/HDF5/doc/Copyright.html. If you do not have *
+ * access to either file, you may request a copy from help@hdfgroup.org. *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+/*
+ * Parallel tests for file image operations
+ */
+
+#include "testphdf5.h"
+
+/* file_image_daisy_chain_test
+ *
+ * Process zero:
+ *
+ * 1) Creates a core file with an integer vector data set of
+ * length n (= mpi_size),
+ *
+ * 2) Initializes the vector to zero in * location 0, and to -1
+ * everywhere else.
+ *
+ * 3) Flushes the core file, and gets an image of it. Closes
+ * the core file.
+ *
+ * 4) Sends the image to process 1.
+ *
+ * 5) Awaits receipt on a file image from process n-1.
+ *
+ * 6) opens the image received from process n-1, verifies that
+ * it contains a vector of length equal to mpi_size, and
+ * that the vector contains (0, 1, 2, ... n-1)
+ *
+ * 7) closes the core file and exits.
+ *
+ * Process i (0 < i < n)
+ *
+ * 1) Await receipt of file image from process (i - 1).
+ *
+ * 2) Open the image with the core file driver, verify that i
+ * contains a vector v of length, and that v[j] = j for
+ * 0 <= j < i, and that v[j] == -1 for i <= j < n
+ *
+ * 3) Set v[i] = i in the core file.
+ *
+ * 4) Flush the core file and send it to process (i + 1) % n.
+ *
+ * 5) close the core file and exit.
+ *
+ * Test fails on a hang (if an image is not received), or on invalid data.
+ *
+ * JRM -- 11/28/11
+ */
+void
+file_image_daisy_chain_test(void)
+{
+ char file_name[1024] = "\0";
+ int mpi_size, mpi_rank;
+ int mpi_result;
+ int i;
+ int space_ndims;
+ MPI_Status rcvstat;
+ int * vector_ptr = NULL;
+ hid_t fapl_id = -1;
+ hid_t file_id; /* file IDs */
+ hid_t dset_id = -1;
+ hid_t dset_type_id = -1;
+ hid_t space_id = -1;
+ herr_t err;
+ hsize_t dims[1];
+ void * image_ptr = NULL;
+ ssize_t bytes_read;
+ ssize_t image_len;
+ hbool_t vector_ok = TRUE;
+ htri_t tri_result;
+
+
+ /* set up MPI parameters */
+ MPI_Comm_size(MPI_COMM_WORLD, &mpi_size);
+ MPI_Comm_rank(MPI_COMM_WORLD, &mpi_rank);
+
+ /* setup file name */
+ HDsnprintf(file_name, 1024, "file_image_daisy_chain_test_%05d.h5",
+ (int)mpi_rank);
+
+ if(mpi_rank == 0) {
+
+ /* 1) Creates a core file with an integer vector data set
+ * of length mpi_size,
+ */
+ fapl_id = H5Pcreate(H5P_FILE_ACCESS);
+ VRFY((fapl_id >= 0), "creating fapl");
+
+ err = H5Pset_fapl_core(fapl_id, (size_t)(64 *1024), FALSE);
+ VRFY((err >= 0), "setting core file driver in fapl.");
+
+ file_id = H5Fcreate(file_name, 0, H5P_DEFAULT, fapl_id);
+ VRFY((file_id >= 0), "created core file");
+
+ dims[0] = (hsize_t)mpi_size;
+ space_id = H5Screate_simple(1, dims, dims);
+ VRFY((space_id >= 0), "created data space");
+
+ dset_id = H5Dcreate2(file_id, "v", H5T_NATIVE_INT, space_id,
+ H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
+ VRFY((dset_id >= 0), "created data set");
+
+
+ /* 2) Initialize the vector to zero in location 0, and
+ * to -1 everywhere else.
+ */
+
+ vector_ptr = (int *)HDmalloc((size_t)(mpi_size) * sizeof(int));
+ VRFY((vector_ptr != NULL), "allocated in memory representation of vector");
+
+ vector_ptr[0] = 0;
+ for(i = 1; i < mpi_size; i++)
+ vector_ptr[i] = -1;
+
+ err = H5Dwrite(dset_id, H5T_NATIVE_INT, H5S_ALL, H5S_ALL,
+ H5P_DEFAULT, (void *)vector_ptr);
+ VRFY((err >= 0), "wrote initial data to vector.");
+
+ HDfree(vector_ptr);
+ vector_ptr = NULL;
+
+
+ /* 3) Flush the core file, and get an image of it. Close
+ * the core file.
+ */
+ err = H5Fflush(file_id, H5F_SCOPE_GLOBAL);
+ VRFY((err >= 0), "flushed core file.");
+
+ image_len = H5Fget_file_image(file_id, NULL, (size_t)0);
+ VRFY((image_len > 0), "got image file size");
+
+ image_ptr = (void *)HDmalloc((size_t)image_len);
+ VRFY(image_ptr != NULL, "allocated file image buffer.");
+
+ bytes_read = H5Fget_file_image(file_id, image_ptr, (size_t)image_len);
+ VRFY(bytes_read == image_len, "wrote file into image buffer");
+
+ err = H5Sclose(space_id);
+ VRFY((err >= 0), "closed data space.");
+
+ err = H5Dclose(dset_id);
+ VRFY((err >= 0), "closed data set.");
+
+ err = H5Fclose(file_id);
+ VRFY((err >= 0), "closed core file(1).");
+
+ err = H5Pclose(fapl_id);
+ VRFY((err >= 0), "closed fapl(1).");
+
+
+ /* 4) Send the image to process 1. */
+
+ mpi_result = MPI_Ssend((void *)(&image_len), (int)sizeof(ssize_t),
+ MPI_BYTE, 1, 0, MPI_COMM_WORLD);
+ VRFY((mpi_result == MPI_SUCCESS), "sent image size to process 1");
+
+ mpi_result = MPI_Ssend((void *)image_ptr, (int)image_len,
+ MPI_BYTE, 1, 0, MPI_COMM_WORLD);
+ VRFY((mpi_result == MPI_SUCCESS), "sent image to process 1");
+
+ HDfree(image_ptr);
+ image_ptr = NULL;
+ image_len = 0;
+
+
+ /* 5) Await receipt on a file image from process n-1. */
+
+ mpi_result = MPI_Recv((void *)(&image_len), (int)sizeof(ssize_t),
+ MPI_BYTE, mpi_size - 1, 0, MPI_COMM_WORLD,
+ &rcvstat);
+ VRFY((mpi_result == MPI_SUCCESS), "received image len from process n-1");
+
+ image_ptr = (void *)HDmalloc((size_t)image_len);
+ VRFY(image_ptr != NULL, "allocated file image receive buffer.");
+
+ mpi_result = MPI_Recv((void *)image_ptr, (int)image_len,
+ MPI_BYTE, mpi_size - 1, 0, MPI_COMM_WORLD,
+ &rcvstat);
+ VRFY((mpi_result == MPI_SUCCESS), \
+ "received file image from process n-1");
+
+ /* 6) open the image received from process n-1, verify that
+ * it contains a vector of length equal to mpi_size, and
+ * that the vector contains (0, 1, 2, ... n-1).
+ */
+ fapl_id = H5Pcreate(H5P_FILE_ACCESS);
+ VRFY((fapl_id >= 0), "creating fapl");
+
+ err = H5Pset_fapl_core(fapl_id, (size_t)(64 *1024), FALSE);
+ VRFY((err >= 0), "setting core file driver in fapl.");
+
+ err = H5Pset_file_image(fapl_id, image_ptr, (size_t)image_len);
+ VRFY((err >= 0), "set file image in fapl.");
+
+ file_id = H5Fopen(file_name, H5F_ACC_RDWR, fapl_id);
+ VRFY((file_id >= 0), "opened received file image file");
+
+ dset_id = H5Dopen1(file_id, "v");
+ VRFY((dset_id >= 0), "opened data set");
+
+ dset_type_id = H5Dget_type(dset_id);
+ VRFY((dset_type_id >= 0), "obtained data set type");
+
+ tri_result = H5Tequal(dset_type_id, H5T_NATIVE_INT);
+ VRFY((tri_result == TRUE), "verified data set type");
+
+ space_id = H5Dget_space(dset_id);
+ VRFY((space_id >= 0), "opened data space");
+
+ space_ndims = H5Sget_simple_extent_ndims(space_id);
+ VRFY((space_ndims == 1), "verified data space num dims(1)");
+
+ space_ndims = H5Sget_simple_extent_dims(space_id, dims, NULL);
+ VRFY((space_ndims == 1), "verified data space num dims(2)");
+ VRFY((dims[0] == (hsize_t)mpi_size), "verified data space dims");
+
+ vector_ptr = (int *)HDmalloc((size_t)(mpi_size) * sizeof(int));
+ VRFY((vector_ptr != NULL), "allocated in memory rep of vector");
+
+ err = H5Dread(dset_id, H5T_NATIVE_INT, H5S_ALL, H5S_ALL,
+ H5P_DEFAULT, (void *)vector_ptr);
+ VRFY((err >= 0), "read received vector.");
+
+ vector_ok = TRUE;
+ for(i = 0; i < mpi_size; i++)
+ if(vector_ptr[i] != i)
+ vector_ok = FALSE;
+ VRFY((vector_ok), "verified received vector.");
+
+ /* 7) closes the core file and exit. */
+
+ err = H5Sclose(space_id);
+ VRFY((err >= 0), "closed data space.");
+
+ err = H5Dclose(dset_id);
+ VRFY((err >= 0), "closed data set.");
+
+ err = H5Fclose(file_id);
+ VRFY((err >= 0), "closed core file(1).");
+
+ err = H5Pclose(fapl_id);
+ VRFY((err >= 0), "closed fapl(1).");
+
+ HDfree(image_ptr);
+ image_ptr = NULL;
+ image_len = 0;
+ } else {
+ /* 1) Await receipt of file image from process (i - 1). */
+
+ mpi_result = MPI_Recv((void *)(&image_len), (int)sizeof(ssize_t),
+ MPI_BYTE, mpi_rank - 1, 0, MPI_COMM_WORLD,
+ &rcvstat);
+ VRFY((mpi_result == MPI_SUCCESS), \
+ "received image size from process mpi_rank-1");
+
+ image_ptr = (void *)HDmalloc((size_t)image_len);
+ VRFY(image_ptr != NULL, "allocated file image receive buffer.");
+
+ mpi_result = MPI_Recv((void *)image_ptr, (int)image_len,
+ MPI_BYTE, mpi_rank - 1, 0, MPI_COMM_WORLD,
+ &rcvstat);
+ VRFY((mpi_result == MPI_SUCCESS), \
+ "received file image from process mpi_rank-1");
+
+ /* 2) Open the image with the core file driver, verify that it
+ * contains a vector v of length, and that v[j] = j for
+ * 0 <= j < i, and that v[j] == -1 for i <= j < n
+ */
+ fapl_id = H5Pcreate(H5P_FILE_ACCESS);
+ VRFY((fapl_id >= 0), "creating fapl");
+
+ err = H5Pset_fapl_core(fapl_id, (size_t)(64 * 1024), FALSE);
+ VRFY((err >= 0), "setting core file driver in fapl.");
+
+ err = H5Pset_file_image(fapl_id, image_ptr, (size_t)image_len);
+ VRFY((err >= 0), "set file image in fapl.");
+
+ file_id = H5Fopen(file_name, H5F_ACC_RDWR, fapl_id);
+ H5Eprint1(stderr);
+ VRFY((file_id >= 0), "opened received file image file");
+
+ dset_id = H5Dopen1(file_id, "v");
+ VRFY((dset_id >= 0), "opened data set");
+
+ dset_type_id = H5Dget_type(dset_id);
+ VRFY((dset_type_id >= 0), "obtained data set type");
+
+ tri_result = H5Tequal(dset_type_id, H5T_NATIVE_INT);
+ VRFY((tri_result == TRUE), "verified data set type");
+
+ space_id = H5Dget_space(dset_id);
+ VRFY((space_id >= 0), "opened data space");
+
+ space_ndims = H5Sget_simple_extent_ndims(space_id);
+ VRFY((space_ndims == 1), "verified data space num dims(1)");
+
+ space_ndims = H5Sget_simple_extent_dims(space_id, dims, NULL);
+ VRFY((space_ndims == 1), "verified data space num dims(2)");
+ VRFY((dims[0] == (hsize_t)mpi_size), "verified data space dims");
+
+ vector_ptr = (int *)HDmalloc((size_t)(mpi_size) * sizeof(int));
+ VRFY((vector_ptr != NULL), "allocated in memory rep of vector");
+
+ err = H5Dread(dset_id, H5T_NATIVE_INT, H5S_ALL, H5S_ALL,
+ H5P_DEFAULT, (void *)vector_ptr);
+ VRFY((err >= 0), "read received vector.");
+
+ vector_ok = TRUE;
+ for(i = 0; i < mpi_size; i++){
+ if(i < mpi_rank) {
+ if(vector_ptr[i] != i)
+ vector_ok = FALSE;
+ } else {
+ if(vector_ptr[i] != -1)
+ vector_ok = FALSE;
+ }
+ }
+ VRFY((vector_ok), "verified received vector.");
+
+
+ /* 3) Set v[i] = i in the core file. */
+
+ vector_ptr[mpi_rank] = mpi_rank;
+
+ err = H5Dwrite(dset_id, H5T_NATIVE_INT, H5S_ALL, H5S_ALL,
+ H5P_DEFAULT, (void *)vector_ptr);
+ VRFY((err >= 0), "wrote modified data to vector.");
+
+ HDfree(vector_ptr);
+ vector_ptr = NULL;
+
+
+ /* 4) Flush the core file and send it to process (mpi_rank + 1) % n. */
+
+ err = H5Fflush(file_id, H5F_SCOPE_GLOBAL);
+ VRFY((err >= 0), "flushed core file.");
+
+ image_len = H5Fget_file_image(file_id, NULL, (size_t)0);
+ VRFY((image_len > 0), "got (possibly modified) image file len");
+
+ image_ptr = (void *)HDrealloc((void *)image_ptr, (size_t)image_len);
+ VRFY(image_ptr != NULL, "re-allocated file image buffer.");
+
+ bytes_read = H5Fget_file_image(file_id, image_ptr, (size_t)image_len);
+ VRFY(bytes_read == image_len, "wrote file into image buffer");
+
+ mpi_result = MPI_Ssend((void *)(&image_len), (int)sizeof(ssize_t),
+ MPI_BYTE, (mpi_rank + 1) % mpi_size, 0,
+ MPI_COMM_WORLD);
+ VRFY((mpi_result == MPI_SUCCESS), \
+ "sent image size to process (mpi_rank + 1) % mpi_size");
+
+ mpi_result = MPI_Ssend((void *)image_ptr, (int)image_len,
+ MPI_BYTE, (mpi_rank + 1) % mpi_size, 0,
+ MPI_COMM_WORLD);
+ VRFY((mpi_result == MPI_SUCCESS), \
+ "sent image to process (mpi_rank + 1) % mpi_size");
+
+ HDfree(image_ptr);
+ image_ptr = NULL;
+ image_len = 0;
+
+ /* 5) close the core file and exit. */
+
+ err = H5Sclose(space_id);
+ VRFY((err >= 0), "closed data space.");
+
+ err = H5Dclose(dset_id);
+ VRFY((err >= 0), "closed data set.");
+
+ err = H5Fclose(file_id);
+ VRFY((err >= 0), "closed core file(1).");
+
+ err = H5Pclose(fapl_id);
+ VRFY((err >= 0), "closed fapl(1).");
+ }
+
+ return;
+
+} /* file_image_daisy_chain_test() */
+