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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by The HDF Group. *
* 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://www.hdfgroup.org/licenses. *
* 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 = H5I_INVALID_HID;
hid_t file_id; /* file IDs */
hid_t dset_id = H5I_INVALID_HID;
hid_t dset_type_id = H5I_INVALID_HID;
hid_t space_id = H5I_INVALID_HID;
herr_t err;
hsize_t dims[1];
void *image_ptr = NULL;
ssize_t bytes_read;
ssize_t image_len;
bool 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 *)malloc((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.");
free(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 *)malloc((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");
free(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 *)malloc((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 = H5Dopen2(file_id, "v", H5P_DEFAULT);
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 *)malloc((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.");
free(vector_ptr);
vector_ptr = NULL;
/* 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).");
free(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 *)malloc((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);
H5Eprint2(H5P_DEFAULT, stderr);
VRFY((file_id >= 0), "opened received file image file");
dset_id = H5Dopen2(file_id, "v", H5P_DEFAULT);
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 *)malloc((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.");
free(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 *)realloc((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");
free(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() */
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