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489e339019
hdf5/perform/sio_engine.c
Christian Chilan 489e339019 [svn-r15563] Added support for serial prefix HDF5_PREFIX. 
Tested on kagiso, smirom, and linew.
2008-08-29 16:33:14 -05:00

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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 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. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
* Author: Christian Chilan, April 2008
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include "hdf5.h"
#ifdef H5_HAVE_GPFS
# include <gpfs_fcntl.h>
#endif /* H5_HAVE_GPFS */
#include "sio_perf.h"
#include "sio_timer.h"
/* Macro definitions */
/* sizes of various items. these sizes won't change during program execution */
/* The following three must have the same type */
#define ELMT_SIZE (sizeof(unsigned char)) /* we're doing bytes */
#define ELMT_H5_TYPE H5T_NATIVE_UCHAR
#define GOTOERROR(errcode) { ret_code = errcode; goto done; }
#define GOTODONE { goto done; }
#define ERRMSG(mesg) { \
fprintf(stderr, "*** Assertion failed (%s) at line %4d in %s\n", \
mesg, (int)__LINE__, __FILE__); \
}
#define MSG(mesg) { \
fprintf(stderr, "(%s) at line %4d in %s\n", \
mesg, (int)__LINE__, __FILE__); \
}
/* verify: if val is false (0), print mesg. */
#define VRFY(val, mesg) do { \
if (!val) { \
ERRMSG(mesg); \
GOTOERROR(FAIL); \
} \
} while(0)
/* POSIX I/O macros */
#define POSIXCREATE(fn) HDopen(fn, O_CREAT|O_TRUNC|O_RDWR, 0600)
#define POSIXOPEN(fn, F) HDopen(fn, F, 0600)
#define POSIXCLOSE(F) HDclose(F)
#define POSIXSEEK(F,L) HDlseek(F, L, SEEK_SET)
#define POSIXWRITE(F,B,S) HDwrite(F,B,S)
#define POSIXREAD(F,B,S) HDread(F,B,S)
enum {
SIO_CREATE = 1,
SIO_WRITE = 2,
SIO_READ = 4
};
/* Global variables */
static int clean_file_g = -1; /*whether to cleanup temporary test */
/*files. -1 is not defined; */
/*0 is no cleanup; 1 is do cleanup */
#ifndef MIN
# define MIN(a,b) ((a) < (b) ? (a) : (b))
#endif /* !MIN */
/* the different types of file descriptors we can expect */
typedef union _file_descr {
int posixfd; /* POSIX file handle*/
hid_t h5fd; /* HDF5 file */
} file_descr;
/* local functions */
static char *sio_create_filename(iotype iot, const char *base_name,
char *fullname, size_t size, parameters *param);
static herr_t do_write(results *res, file_descr *fd, parameters *parms, void *buffer);
static herr_t do_read(results *res, file_descr *fd, parameters *parms, void *buffer);
static herr_t dset_write(int local_dim, file_descr *fd, parameters *parms, void *buffer);
static herr_t posix_buffer_write(int local_dim, file_descr *fd, parameters *parms, void *buffer);
static herr_t dset_read(int localrank, file_descr *fd, parameters *parms, void *buffer);
static herr_t posix_buffer_read(int local_dim, file_descr *fd, parameters *parms, void *buffer);
static herr_t do_fopen(parameters *param, char *fname, file_descr *fd /*out*/,
int flags);
hid_t set_vfd(parameters *param);
static herr_t do_fclose(iotype iot, file_descr *fd);
static void do_cleanupfile(iotype iot, char *fname);
/* GPFS-specific functions */
#ifdef H5_HAVE_GPFS
static void gpfs_access_range(int handle, off_t start, off_t length, int is_write);
static void gpfs_free_range(int handle, off_t start, off_t length);
static void gpfs_clear_file_cache(int handle);
static void gpfs_cancel_hints(int handle);
static void gpfs_start_data_shipping(int handle, int num_insts);
static void gpfs_start_data_ship_map(int handle, int partition_size,
int agent_count, int *agent_node_num);
static void gpfs_stop_data_shipping(int handle);
static void gpfs_invalidate_file_cache(const char *filename);
#endif /* H5_HAVE_GPFS */
/* global variables */
static off_t offset[MAX_DIMS]; /* dataset size in bytes */
static size_t buf_offset[MAX_DIMS]; /* dataset size in bytes */
static int order[MAX_DIMS]; /* dimension access order */
static size_t linear_buf_size; /* linear buffer size */
static int cont_dim; /* lowest dimension for contiguous POSIX
access */
static size_t cont_size; /* size of contiguous POSIX access */
static hid_t fapl; /* file access list */
static unsigned char *buf_p; /* buffer pointer */
static unsigned char *buf2_p; /* buffer pointer */
static const char *multi_letters = "msbrglo"; /* string for multi driver */
static char *buffer2=NULL; /* buffer for data verification */
/* HDF5 global variables */
static hsize_t h5count[MAX_DIMS]; /*selection count */
static hssize_t h5offset[MAX_DIMS]; /* Selection offset within dataspace */
static hid_t h5dset_space_id = -1; /*dataset space ID */
static hid_t h5mem_space_id = -1; /*memory dataspace ID */
static hid_t h5ds_id = -1; /*dataset handle */
static hid_t h5dcpl = -1; /* Dataset creation property list */
static hid_t h5dxpl = -1; /* Dataset transfer property list */
/*
* Function: do_sio
* Purpose: SIO Engine where IO are executed.
* Return: results
* Programmer: Christian Chilan, April, 2008
* Modifications:
*/
results
do_sio(parameters param)
{
char *buffer = NULL; /*data buffer pointer */
off_t nbytes; /* dataset raw size */
off_t dset_size[MAX_DIMS]; /* dataset size in bytes */
size_t buf_size[MAX_DIMS]; /* general buffer size in bytes */
size_t chk_size[MAX_DIMS]; /* chunk size in bytes */
file_descr fd; /* file handles */
iotype iot; /* API type */
char base_name[256]; /* test file base name */
/* return codes */
herr_t ret_code = 0; /*return code */
results res;
char fname[FILENAME_MAX]; /* test file name */
int i;
/* HDF5 variables */
herr_t hrc; /*HDF5 return code */
/* Sanity check parameters */
/* IO type */
iot = param.io_type;
switch (iot) {
case POSIXIO:
fd.posixfd = -1;
res.timers = sio_time_new();
break;
case HDF5:
fd.h5fd = -1;
res.timers = sio_time_new();
break;
default:
/* unknown request */
fprintf(stderr, "Unknown IO type request (%d)\n", iot);
GOTOERROR(FAIL);
}
nbytes = param.num_bytes;
linear_buf_size = 1;
for (i=0; i<param.rank; i++){
dset_size[i] = param.dset_size[i];
buf_size[i] = param.buf_size[i];
chk_size[i] = param.chk_size[i];
order[i] = param.order[i];
linear_buf_size *= buf_size[i];
buf_offset[i] = 0;
offset[i] = 0;
/* Validate transfer buffer size */
if (param.buf_size[i]<=0) {
HDfprintf(stderr,
"Transfer buffer size[%d] (%Hd) must be > 0\n", i,(long_long)buf_size[i]);
GOTOERROR(FAIL);
}
if ((param.dset_size[i]%param.buf_size[i])!=0) {
HDfprintf(stderr,
"Dataset size[%d] (%Hd) must be a multiple of the "
"trasfer buffer size[%d] (%Hd)\n",param.rank,
(long_long)param.dset_size[i], param.rank, (long_long)param.buf_size[i]);
GOTOERROR(FAIL);
}
}
/* Allocate transfer buffer */
buffer2 = malloc(linear_buf_size);
if ((buffer = malloc(linear_buf_size)) == NULL){
HDfprintf(stderr, "malloc for transfer buffer size (%Hd) failed\n",
(long_long)(linear_buf_size));
GOTOERROR(FAIL);
}
if (sio_debug_level >= 4)
/* output all of the times for all iterations */
fprintf(output, "Timer details:\n");
/*
* Write performance measurement
*/
/* Open file for write */
strcpy(base_name, "#sio_tmp");
sio_create_filename(iot, base_name, fname, sizeof(fname), &param);
if (sio_debug_level > 0)
HDfprintf(output, "data filename=%s\n",
fname);
set_time(res.timers, HDF5_GROSS_WRITE_FIXED_DIMS, START);
hrc = do_fopen(&param, fname, &fd, SIO_CREATE | SIO_WRITE);
VRFY((hrc == SUCCESS), "do_fopen failed");
set_time(res.timers, HDF5_FINE_WRITE_FIXED_DIMS, START);
hrc = do_write(&res, &fd, &param, buffer);
set_time(res.timers, HDF5_FINE_WRITE_FIXED_DIMS, STOP);
VRFY((hrc == SUCCESS), "do_write failed");
/* Close file for write */
hrc = do_fclose(iot, &fd);
set_time(res.timers, HDF5_GROSS_WRITE_FIXED_DIMS, STOP);
VRFY((hrc == SUCCESS), "do_fclose failed");
if (!param.h5_write_only) {
/*
* Read performance measurement
*/
/* Open file for read */
set_time(res.timers, HDF5_GROSS_READ_FIXED_DIMS, START);
hrc = do_fopen(&param, fname, &fd, SIO_READ);
VRFY((hrc == SUCCESS), "do_fopen failed");
set_time(res.timers, HDF5_FINE_READ_FIXED_DIMS, START);
hrc = do_read(&res, &fd, &param, buffer);
set_time(res.timers, HDF5_FINE_READ_FIXED_DIMS, STOP);
VRFY((hrc == SUCCESS), "do_read failed");
/* Close file for read */
hrc = do_fclose(iot, &fd);
set_time(res.timers, HDF5_GROSS_READ_FIXED_DIMS, STOP);
VRFY((hrc == SUCCESS), "do_fclose failed");
}
do_cleanupfile(iot, fname);
done:
/* clean up */
/* release HDF5 objects */
/* close any opened files */
/* no remove(fname) because that should have happened normally. */
switch (iot) {
case POSIXIO:
if (fd.posixfd != -1)
hrc = do_fclose(iot, &fd);
break;
case HDF5:
if (fd.h5fd != -1)
hrc = do_fclose(iot, &fd);
break;
}
/* release generic resources */
if (buffer)
free(buffer);
res.ret_code = ret_code;
return res;
}
/*
* Function: sio_create_filename
* Purpose: Create a new filename to write to. Determine the correct
* suffix to append to the filename by the type of I/O we're
* doing. Also, place in the /tmp/{$USER,$LOGIN} directory if
* USER or LOGIN are specified in the environment.
* Return: Pointer to filename or NULL
* Programmer: Bill Wendling, 21. November 2001
* Modifications: Support for file drivers. Christian Chilan, April, 2008
*/
static char *
sio_create_filename(iotype iot, const char *base_name, char *fullname, size_t size, parameters *param)
{
const char *prefix, *suffix="";
char *ptr, last = '\0';
size_t i, j;
vfdtype vfd;
vfd = param->vfd;
if (!base_name || !fullname || size < 1)
return NULL;
memset(fullname, 0, size);
switch (iot) {
case POSIXIO:
suffix = ".posix";
break;
case HDF5:
suffix = ".h5";
if (vfd == family)
suffix = "%05d.h5";
else if (vfd == multi)
suffix = NULL;
break;
}
/* First use the environment variable and then try the constant */
prefix = getenv("HDF5_PREFIX");
#ifdef HDF5_PREFIX
if (!prefix)
prefix = HDF5_PREFIX;
#endif /* HDF5_PREFIX */
/* Prepend the prefix value to the base name */
if (prefix && *prefix) {
/* If the prefix specifies the HDF5_PREFIX directory, then
* default to using the "/tmp/$USER" or "/tmp/$LOGIN"
* directory instead. */
register char *user, *login, *subdir;
user = getenv("USER");
login = getenv("LOGIN");
subdir = (user ? user : login);
if (subdir) {
for (i = 0; i < size && prefix[i]; i++)
fullname[i] = prefix[i];
fullname[i++] = '/';
for (j = 0; i < size && subdir[j]; i++, j++)
fullname[i] = subdir[j];
} else {
/* We didn't append the prefix yet */
strncpy(fullname, prefix, MIN(strlen(prefix), size));
}
if ((strlen(fullname) + strlen(base_name) + 1) < size) {
/* Append the base_name with a slash first. Multiple slashes are
* handled below. */
h5_stat_t buf;
if (HDstat(fullname, &buf) < 0)
/* The directory doesn't exist just yet */
if (mkdir(fullname, (mode_t)0755) < 0 && errno != EEXIST) {
/* We couldn't make the "/tmp/${USER,LOGIN}" subdirectory.
* Default to PREFIX's original prefix value. */
strcpy(fullname, prefix);
}
strcat(fullname, "/");
strcat(fullname, base_name);
} else {
/* Buffer is too small */
return NULL;
}
} else if (strlen(base_name) >= size) {
/* Buffer is too small */
return NULL;
} else {
strcpy(fullname, base_name);
}
/* Append a suffix */
if (suffix) {
if (strlen(fullname) + strlen(suffix) >= size)
return NULL;
strcat(fullname, suffix);
}
/* Remove any double slashes in the filename */
for (ptr = fullname, i = j = 0; ptr && i < size; i++, ptr++) {
if (*ptr != '/' || last != '/')
fullname[j++] = *ptr;
last = *ptr;
}
return fullname;
}
/*
* Function: do_write
* Purpose: Write the required amount of data to the file.
* Return: SUCCESS or FAIL
* Programmer: Christian Chilan, April, 2008
* Modifications:
*/
static herr_t
do_write(results *res, file_descr *fd, parameters *parms, void *buffer)
{
int ret_code = SUCCESS;
char dname[64];
long i;
/* HDF5 variables */
herr_t hrc; /*HDF5 return code */
hsize_t h5dims[MAX_DIMS]; /*dataset dim sizes */
hsize_t h5chunk[MAX_DIMS]; /*dataset dim sizes */
hsize_t h5block[MAX_DIMS]; /*dataspace selection */
hsize_t h5stride[MAX_DIMS]; /*selection stride */
hsize_t h5start[MAX_DIMS]; /*selection start */
hsize_t h5maxdims[MAX_DIMS];
int rank; /*rank of dataset */
/* Prepare buffer for verifying data */
/* if (parms->verify)
memset(buffer,1,linear_buf_size); */
buf_p=(unsigned char *)buffer;
for (i=0; i < linear_buf_size; i++)
buf_p[i]=i%128;
rank = parms->rank;
for (i=0; i<rank; i++) {
h5offset[i] = offset[i] = 0;
}
/* I/O Access specific setup */
switch (parms->io_type) {
case POSIXIO:
/* determine lowest dimension for contiguous POSIX access */
cont_dim = rank;
for (i=rank-1; i>=0; i--) {
if (parms->buf_size[i]==parms->dset_size[i])
cont_dim = i;
else
break;
}
/* determine size of the contiguous POSIX access */
cont_size = (!cont_dim)? 1 : parms->buf_size[cont_dim-1];
for (i=cont_dim; i<rank; i++)
cont_size *= parms->buf_size[i];
break;
case HDF5: /* HDF5 setup */
for (i=0; i < rank; i++){
h5dims[i] = parms->dset_size[i];
h5start[i] = 0;
h5stride[i] = 1;
h5block[i] = 1;
h5count[i] = parms->buf_size[i];
h5chunk[i] = parms->chk_size[i];
h5maxdims[i] = H5S_UNLIMITED;
}
if (parms->h5_use_chunks && parms->h5_extendable) {
h5dset_space_id = H5Screate_simple(rank, h5count, h5maxdims);
VRFY((h5dset_space_id >= 0), "H5Screate_simple");
}
else {
h5dset_space_id = H5Screate_simple(rank, h5dims, NULL);
VRFY((h5dset_space_id >= 0), "H5Screate_simple");
}
hrc = H5Sselect_hyperslab(h5dset_space_id, H5S_SELECT_SET,
h5start, h5stride, h5count, h5block);
VRFY((hrc >= 0), "H5Sselect_hyperslab");
/* Create the memory dataspace that corresponds to the xfer buffer */
h5mem_space_id = H5Screate_simple(rank, h5count, NULL);
VRFY((h5mem_space_id >= 0), "H5Screate_simple");
/* Create the dataset transfer property list */
h5dxpl = H5Pcreate(H5P_DATASET_XFER);
if (h5dxpl < 0) {
fprintf(stderr, "HDF5 Property List Create failed\n");
GOTOERROR(FAIL);
}
break;
} /* end switch */
/* create dataset */
switch (parms->io_type) {
case POSIXIO:
break;
case HDF5:
h5dcpl = H5Pcreate(H5P_DATASET_CREATE);
if (h5dcpl < 0) {
fprintf(stderr, "HDF5 Property List Create failed\n");
GOTOERROR(FAIL);
}
if(parms->h5_use_chunks) {
/* Set the chunk size to be the same as the buffer size */
hrc = H5Pset_chunk(h5dcpl, rank, h5chunk);
if (hrc < 0) {
fprintf(stderr, "HDF5 Property List Set failed\n");
GOTOERROR(FAIL);
} /* end if */
} /* end if */
sprintf(dname, "Dataset_%ld", (unsigned long)parms->num_bytes);
h5ds_id = H5Dcreate2(fd->h5fd, dname, ELMT_H5_TYPE,
h5dset_space_id, H5P_DEFAULT, h5dcpl, H5P_DEFAULT);
if (h5ds_id < 0) {
fprintf(stderr, "HDF5 Dataset Create failed\n");
GOTOERROR(FAIL);
}
hrc = H5Pclose(h5dcpl);
/* verifying the close of the dcpl */
if (hrc < 0) {
fprintf(stderr, "HDF5 Property List Close failed\n");
GOTOERROR(FAIL);
}
break;
}
/* Start "raw data" write timer */
set_time(res->timers, HDF5_RAW_WRITE_FIXED_DIMS, START);
/* Perform write */
hrc = dset_write(rank-1, fd, parms, buffer);
if (hrc < 0) {
fprintf(stderr, "Error in dataset write\n");
GOTOERROR(FAIL);
}
/* Stop "raw data" write timer */
set_time(res->timers, HDF5_RAW_WRITE_FIXED_DIMS, STOP);
/* Calculate write time */
/* Close dataset. Only HDF5 needs to do an explicit close. */
if (parms->io_type == HDF5) {
hrc = H5Dclose(h5ds_id);
if (hrc < 0) {
fprintf(stderr, "HDF5 Dataset Close failed\n");
GOTOERROR(FAIL);
}
h5ds_id = -1;
} /* end if */
done:
/* release HDF5 objects */
if (h5dset_space_id != -1) {
hrc = H5Sclose(h5dset_space_id);
if (hrc < 0){
fprintf(stderr, "HDF5 Dataset Space Close failed\n");
ret_code = FAIL;
} else {
h5dset_space_id = -1;
}
}
if (h5mem_space_id != -1) {
hrc = H5Sclose(h5mem_space_id);
if (hrc < 0) {
fprintf(stderr, "HDF5 Memory Space Close failed\n");
ret_code = FAIL;
} else {
h5mem_space_id = -1;
}
}
if (h5dxpl != -1) {
hrc = H5Pclose(h5dxpl);
if (hrc < 0) {
fprintf(stderr, "HDF5 Dataset Transfer Property List Close failed\n");
ret_code = FAIL;
} else {
h5dxpl = -1;
}
}
return ret_code;
}
/*
* Function: dset_write
* Purpose: Write buffer into the dataset.
* Return: SUCCESS or FAIL
* Programmer: Christian Chilan, April, 2008
* Modifications:
*/
static herr_t dset_write(int local_dim, file_descr *fd, parameters *parms, void *buffer)
{
int cur_dim = order[local_dim]-1;
int ret_code = SUCCESS;
int k;
hsize_t dims[MAX_DIMS], maxdims[MAX_DIMS];
long i,j;
herr_t hrc;
/* iterates according to the dimensions in order array */
for (i=0; i < parms->dset_size[cur_dim]; i += parms->buf_size[cur_dim]){
h5offset[cur_dim] = offset[cur_dim] = i;
if (local_dim > 0){
dset_write(local_dim-1, fd, parms, buffer);
}else{
switch (parms->io_type) {
case POSIXIO:
/* initialize POSIX offset in the buffer */
for (j=0; j < parms->rank; j++) {
buf_offset[j]=0;
}
buf_p = (unsigned char *)buffer;
/* write POSIX buffer */
posix_buffer_write(0, fd, parms, buffer);
break;
case HDF5:
/* if dimensions are extendable, extend them as needed during
access */
if (parms->h5_use_chunks && parms->h5_extendable) {
hrc=H5Sget_simple_extent_dims(h5dset_space_id,dims,maxdims);
VRFY((hrc >= 0), "H5Sget_simple_extent_dims");
for (k=0; k < parms->rank; k++){
if (dims[k] <= h5offset[k]) {
dims[k] = dims[k]+h5count[k];
hrc=H5Sset_extent_simple(h5dset_space_id,parms->rank,dims,maxdims);
VRFY((hrc >= 0), "H5Sset_extent_simple");
hrc=H5Dset_extent(h5ds_id,dims);
VRFY((hrc >= 0), "H5Dextend");
}
}
}
/* applies offset */
hrc = H5Soffset_simple(h5dset_space_id, h5offset);
VRFY((hrc >= 0), "H5Soffset_simple");
/* Write the buffer out */
hrc=H5Sget_simple_extent_dims(h5dset_space_id,dims,maxdims);
hrc = H5Dwrite(h5ds_id, ELMT_H5_TYPE, h5mem_space_id,
h5dset_space_id, h5dxpl, buffer);
VRFY((hrc >= 0), "H5Dwrite");
break;
} /* switch (parms->io_type) */
}
}
done:
return ret_code;
}
/*
* Function: posix_buffer_write
* Purpose: Write buffer into the POSIX file considering contiguity.
* Return: SUCCESS or FAIL
* Programmer: Christian Chilan, April, 2008
* Modifications:
*/
static herr_t posix_buffer_write(int local_dim, file_descr *fd, parameters *parms, void *buffer)
{
int dtype_size = 1;
int ret_code = SUCCESS;
long i;
size_t d_offset;
size_t linear_dset_offset = 0;
int j, rc;
/* if dimension is not contiguous, call recursively */
if (local_dim < parms->rank-1 && local_dim != cont_dim) {
for (i=0; i < parms->buf_size[local_dim]; i += dtype_size) {
buf_offset[local_dim] = i;
posix_buffer_write(local_dim+1, fd, parms, buffer);
/* if next dimension is cont_dim, it will fill out the buffer
traversing the entire dimension local_dim without the need
of performing iteration */
if (local_dim+1==cont_dim)
break;
}
/* otherwise, perform contiguous POSIX access */
} else {
buf_offset[local_dim] = 0;
/* determine offset in the buffer */
for (i=0; i < parms->rank; i++){
d_offset=1;
for (j=i+1; j < parms->rank; j++)
d_offset *= parms->dset_size[j];
linear_dset_offset += (offset[i]+buf_offset[i])*d_offset;
}
/* only care if seek returns error */
rc = POSIXSEEK(fd->posixfd, linear_dset_offset) < 0 ? -1 : 0;
VRFY((rc==0), "POSIXSEEK");
/* check if all bytes are written */
rc = ((ssize_t)cont_size ==
POSIXWRITE(fd->posixfd, buf_p, cont_size));
VRFY((rc != 0), "POSIXWRITE");
/* Advance location in buffer */
buf_p += cont_size;
}
done:
return ret_code;
}
/*
* Function: do_read
* Purpose: Read the required amount of data to the file.
* Return: SUCCESS or FAIL
* Programmer: Christian Chilan, April, 2008
* Modifications:
*/
static herr_t
do_read(results *res, file_descr *fd, parameters *parms, void *buffer)
{
int ret_code = SUCCESS;
char dname[64];
long i;
/* HDF5 variables */
herr_t hrc; /*HDF5 return code */
hsize_t h5dims[MAX_DIMS]; /*dataset dim sizes */
hsize_t h5chunk[MAX_DIMS]; /*dataset dim sizes */
hsize_t h5block[MAX_DIMS]; /*dataspace selection */
hsize_t h5stride[MAX_DIMS]; /*selection stride */
hsize_t h5start[MAX_DIMS]; /*selection start */
int rank;
/* Prepare buffer for verifying data */
for (i=0; i < linear_buf_size; i++)
buffer2[i]=i%128;
rank = parms->rank;
for (i=0; i<rank; i++) {
h5offset[i] = offset[i] = 0;
}
/* I/O Access specific setup */
switch (parms->io_type) {
case POSIXIO:
cont_dim = rank;
for (i=rank-1; i>=0; i--) {
if (parms->buf_size[i]==parms->dset_size[i])
cont_dim = i;
else
break;
}
cont_size = (!cont_dim)? 1 : parms->buf_size[cont_dim-1];
for (i=cont_dim; i<rank; i++)
cont_size *= parms->buf_size[i];
break;
case HDF5: /* HDF5 setup */
for (i=0; i < rank; i++){
h5dims[i] = parms->dset_size[i];
h5start[i] = 0;
h5stride[i] = 1;
h5block[i] = 1;
h5count[i] = parms->buf_size[i];
h5chunk[i] = parms->chk_size[i];
}
h5dset_space_id = H5Screate_simple(rank, h5dims, NULL);
VRFY((h5dset_space_id >= 0), "H5Screate_simple");
hrc = H5Sselect_hyperslab(h5dset_space_id, H5S_SELECT_SET,
h5start, h5stride, h5count, h5block);
VRFY((hrc >= 0), "H5Sselect_hyperslab");
/* Create the memory dataspace that corresponds to the xfer buffer */
h5mem_space_id = H5Screate_simple(rank, h5count, NULL);
VRFY((h5mem_space_id >= 0), "H5Screate_simple");
/* Create the dataset transfer property list */
h5dxpl = H5Pcreate(H5P_DATASET_XFER);
if (h5dxpl < 0) {
fprintf(stderr, "HDF5 Property List Create failed\n");
GOTOERROR(FAIL);
}
break;
} /* end switch */
/* create dataset */
switch (parms->io_type) {
case POSIXIO:
break;
case HDF5:
sprintf(dname, "Dataset_%ld", parms->num_bytes);
h5ds_id = H5Dopen2(fd->h5fd, dname, H5P_DEFAULT);
if (h5ds_id < 0) {
fprintf(stderr, "HDF5 Dataset open failed\n");
GOTOERROR(FAIL);
}
break;
} /* end switch */
/* Start "raw data" read timer */
set_time(res->timers, HDF5_RAW_READ_FIXED_DIMS, START);
hrc = dset_read(rank-1, fd, parms, buffer);
if (hrc < 0) {
fprintf(stderr, "Error in dataset read\n");
GOTOERROR(FAIL);
}
/* Stop "raw data" read timer */
set_time(res->timers, HDF5_RAW_READ_FIXED_DIMS, STOP);
/* Calculate read time */
/* Close dataset. Only HDF5 needs to do an explicit close. */
if (parms->io_type == HDF5) {
hrc = H5Dclose(h5ds_id);
if (hrc < 0) {
fprintf(stderr, "HDF5 Dataset Close failed\n");
GOTOERROR(FAIL);
}
h5ds_id = -1;
} /* end if */
done:
/* release HDF5 objects */
if (h5dset_space_id != -1) {
hrc = H5Sclose(h5dset_space_id);
if (hrc < 0){
fprintf(stderr, "HDF5 Dataset Space Close failed\n");
ret_code = FAIL;
} else {
h5dset_space_id = -1;
}
}
if (h5mem_space_id != -1) {
hrc = H5Sclose(h5mem_space_id);
if (hrc < 0) {
fprintf(stderr, "HDF5 Memory Space Close failed\n");
ret_code = FAIL;
} else {
h5mem_space_id = -1;
}
}
if (h5dxpl != -1) {
hrc = H5Pclose(h5dxpl);
if (hrc < 0) {
fprintf(stderr, "HDF5 Dataset Transfer Property List Close failed\n");
ret_code = FAIL;
} else {
h5dxpl = -1;
}
}
return ret_code;
}
/*
* Function: dset_read
* Purpose: Read buffer into the dataset.
* Return: SUCCESS or FAIL
* Programmer: Christian Chilan, April, 2008
* Modifications:
*/
static herr_t dset_read(int local_dim, file_descr *fd, parameters *parms, void *buffer)
{
int cur_dim = order[local_dim]-1;
int ret_code = SUCCESS;
long i,j;
herr_t hrc;
/* iterate on the current dimension */
for (i=0; i < parms->dset_size[cur_dim]; i += parms->buf_size[cur_dim]){
h5offset[cur_dim] = offset[cur_dim] = i;
/* if traverse in order array is incomplete, recurse */
if (local_dim > 0){
ret_code = dset_read(local_dim-1, fd, parms, buffer);
/* otherwise, write buffer into dataset */
}else{
switch (parms->io_type) {
case POSIXIO:
for (j=0; j<parms->rank; j++) {
buf_offset[j] = 0;
}
buf_p = (unsigned char*)buffer;
buf2_p = (unsigned char*)buffer2;
posix_buffer_read(0, fd, parms, buffer);
break;
case HDF5:
hrc = H5Soffset_simple(h5dset_space_id, h5offset);
VRFY((hrc >= 0), "H5Soffset_simple");
/* Read the buffer out */
hrc = H5Dread(h5ds_id, ELMT_H5_TYPE, h5mem_space_id,
h5dset_space_id, h5dxpl, buffer);
VRFY((hrc >= 0), "H5Dread");
#if 0
for (j=0; j<linear_buf_size; j++) {
buf_p = (unsigned char*)buffer;
if (buf_p[j]!=buffer2[j])
printf("Inconsistent data in %d\n", j);
}
#endif
break;
} /* switch (parms->io_type) */
}
}
done:
return ret_code;
}
/*
* Function: posix_buffer_read
* Purpose: Read buffer into the POSIX file considering contiguity.
* Return: SUCCESS or FAIL
* Programmer: Christian Chilan, April, 2008
* Modifications:
*/
static herr_t posix_buffer_read(int local_dim, file_descr *fd, parameters *parms, void *buffer)
{
int dtype_size = 1;
int ret_code = SUCCESS;
long i;
size_t d_offset;
size_t linear_dset_offset = 0;
int j, rc;
/* if local dimension is not contiguous, recurse */
if (local_dim < parms->rank-1 && local_dim != cont_dim) {
for (i=0; i < parms->buf_size[local_dim]; i += dtype_size) {
buf_offset[local_dim] = i;
ret_code = posix_buffer_read(local_dim+1, fd, parms, buffer);
if (local_dim+1==cont_dim)
break;
}
/* otherwise, perform contiguous POSIX access */
} else {
buf_offset[local_dim] = 0;
/* determine offset in buffer */
for (i=0; i<parms->rank; i++){
d_offset=1;
for (j=i+1; j<parms->rank; j++)
d_offset *= parms->dset_size[j];
linear_dset_offset += (offset[i]+buf_offset[i])*d_offset;
}
/* only care if seek returns error */
rc = POSIXSEEK(fd->posixfd, linear_dset_offset) < 0 ? -1 : 0;
VRFY((rc==0), "POSIXSEEK");
/* check if all bytes are read */
rc = ((ssize_t)cont_size ==
POSIXREAD(fd->posixfd, buf_p, cont_size));
VRFY((rc != 0), "POSIXREAD");
#if 0
for (j=0; j<cont_size; j++) {
if (buf_p[j]!=buf2_p[j])
printf("Inconsistent data in %d\n", j);
}
buf2_p += cont_size;
#endif
/* Advance location in buffer */
buf_p += cont_size;
}
done:
return ret_code;
}
/*
* Function: do_fopen
* Purpose: Open the specified file.
* Return: SUCCESS or FAIL
* Programmer: Albert Cheng, Bill Wendling, 2001/12/13
* Modifications: Support for file drivers, Christian Chilan, April, 2008
*/
static herr_t
do_fopen(parameters *param, char *fname, file_descr *fd /*out*/, int flags)
{
int ret_code = SUCCESS;
switch (param->io_type) {
case POSIXIO:
if (flags & (SIO_CREATE | SIO_WRITE))
fd->posixfd = POSIXCREATE(fname);
else
fd->posixfd = POSIXOPEN(fname, O_RDONLY);
if (fd->posixfd < 0 ) {
fprintf(stderr, "POSIX File Open failed(%s)\n", fname);
GOTOERROR(FAIL);
}
break;
case HDF5:
fapl = set_vfd(param);
if (fapl < 0) {
fprintf(stderr, "HDF5 Property List Create failed\n");
GOTOERROR(FAIL);
}
/* create the parallel file */
if (flags & (SIO_CREATE | SIO_WRITE)) {
fd->h5fd = H5Fcreate(fname, H5F_ACC_TRUNC, H5P_DEFAULT, fapl);
} else {
fd->h5fd = H5Fopen(fname, H5F_ACC_RDONLY, fapl);
}
if (fd->h5fd < 0) {
fprintf(stderr, "HDF5 File Create failed(%s)\n", fname);
GOTOERROR(FAIL);
}
break;
}
done:
return ret_code;
}
/*
* Function: set_vfd
* Purpose: Sets file driver.
* Return: SUCCESS or FAIL
* Programmer: Christian Chilan, April, 2008
* Modifications:
*/
hid_t
set_vfd(parameters *param)
{
hid_t fapl = -1;
vfdtype vfd;
vfd = param->vfd;
if ((fapl=H5Pcreate(H5P_FILE_ACCESS))<0) return -1;
if (vfd == sec2) {
/* Unix read() and write() system calls */
if (H5Pset_fapl_sec2(fapl)<0) return -1;
} else if (vfd == stdio) {
/* Standard C fread() and fwrite() system calls */
if (H5Pset_fapl_stdio(fapl)<0) return -1;
} else if (vfd == core) {
/* In-core temporary file with 1MB increment */
if (H5Pset_fapl_core(fapl, (size_t)1024*1024, TRUE)<0) return -1;
} else if (vfd == split) {
/* Split meta data and raw data each using default driver */
if (H5Pset_fapl_split(fapl,
"-m.h5", H5P_DEFAULT,
"-r.h5", H5P_DEFAULT)<0)
return -1;
} else if (vfd == multi) {
/* Multi-file driver, general case of the split driver */
H5FD_mem_t memb_map[H5FD_MEM_NTYPES];
hid_t memb_fapl[H5FD_MEM_NTYPES];
const char *memb_name[H5FD_MEM_NTYPES];
char sv[H5FD_MEM_NTYPES][1024];
haddr_t memb_addr[H5FD_MEM_NTYPES];
H5FD_mem_t mt;
HDmemset(memb_map, 0, sizeof memb_map);
HDmemset(memb_fapl, 0, sizeof memb_fapl);
HDmemset(memb_name, 0, sizeof memb_name);
HDmemset(memb_addr, 0, sizeof memb_addr);
assert(HDstrlen(multi_letters)==H5FD_MEM_NTYPES);
for (mt=H5FD_MEM_DEFAULT; mt<H5FD_MEM_NTYPES; H5_INC_ENUM(H5FD_mem_t,mt)) {
memb_fapl[mt] = H5P_DEFAULT;
sprintf(sv[mt], "%%s-%c.h5", multi_letters[mt]);
memb_name[mt] = sv[mt];
memb_addr[mt] = MAX(mt-1,0)*(HADDR_MAX/10);
}
if (H5Pset_fapl_multi(fapl, memb_map, memb_fapl, memb_name,
memb_addr, FALSE)<0) {
return -1;
}
} else if (vfd == family) {
hsize_t fam_size = 1*1024*1024; /*100 MB*/
/* Family of files, each 1MB and using the default driver */
/* if ((val=HDstrtok(NULL, " \t\n\r")))
fam_size = (hsize_t)(HDstrtod(val, NULL) * 1024*1024); */
if (H5Pset_fapl_family(fapl, fam_size, H5P_DEFAULT)<0)
return -1;
} else if (vfd == direct) {
#ifdef H5_HAVE_DIRECT
/* Linux direct read() and write() system calls. Set memory boundary, file block size,
* and copy buffer size to the default values. */
if (H5Pset_fapl_direct(fapl, 1024, 4096, 8*4096)<0) return -1;
#endif
} else {
/* Unknown driver */
return -1;
}
return fapl;
}
/*
* Function: do_fclose
* Purpose: Close the specified file descriptor.
* Return: SUCCESS or FAIL
* Programmer: Albert Cheng, Bill Wendling, 2001/12/13
* Modifications:
*/
static herr_t
do_fclose(iotype iot, file_descr *fd /*out*/)
{
herr_t ret_code = SUCCESS, hrc;
int rc = 0;
switch (iot) {
case POSIXIO:
rc = POSIXCLOSE(fd->posixfd);
if (rc != 0){
fprintf(stderr, "POSIX File Close failed\n");
GOTOERROR(FAIL);
}
fd->posixfd = -1;
break;
case HDF5:
hrc = H5Fclose(fd->h5fd);
if (hrc < 0) {
fprintf(stderr, "HDF5 File Close failed\n");
GOTOERROR(FAIL);
}
fd->h5fd = -1;
break;
}
done:
return ret_code;
}
/*
* Function: do_cleanupfile
* Purpose: Cleanup temporary file unless HDF5_NOCLEANUP is set.
* Return: void
* Programmer: Albert Cheng 2001/12/12
* Modifications: Support for file drivers. Christian Chilan, April, 2008
*/
static void
do_cleanupfile(iotype iot, char *filename)
{
char temp[2048];
int j;
hid_t driver;
if (clean_file_g == -1)
clean_file_g = (getenv("HDF5_NOCLEANUP")==NULL) ? 1 : 0;
if (clean_file_g){
switch (iot) {
case POSIXIO:
HDremove(filename);
break;
case HDF5:
driver = H5Pget_driver(fapl);
if (driver == H5FD_FAMILY) {
for (j = 0; /*void*/; j++) {
HDsnprintf(temp, sizeof temp, filename, j);
if (HDaccess(temp, F_OK) < 0)
break;
HDremove(temp);
}
} else if (driver == H5FD_CORE) {
hbool_t backing; /* Whether the core file has backing store */
H5Pget_fapl_core(fapl,NULL,&backing);
/* If the file was stored to disk with bacing store, remove it */
if(backing)
HDremove(filename);
} else if (driver == H5FD_MULTI) {
H5FD_mem_t mt;
assert(HDstrlen(multi_letters)==H5FD_MEM_NTYPES);
for (mt = H5FD_MEM_DEFAULT; mt < H5FD_MEM_NTYPES; H5_INC_ENUM(H5FD_mem_t,mt)) {
HDsnprintf(temp, sizeof temp, "%s-%c.h5",
filename, multi_letters[mt]);
HDremove(temp); /*don't care if it fails*/
}
} else {
HDremove(filename);
}
H5Pclose(fapl);
break;
}
}
}
#ifdef H5_HAVE_GPFS
/* Descriptions here come from the IBM GPFS Manual */
/*
* Function: gpfs_access_range
* Purpose: Declares an access range within a file for an
* application.
*
* The application will access file offsets within the given
* range, and will not access offsets outside the range.
* Violating this hint may produce worse performance than if
* no hint was specified.
*
* This hint is useful in situations where a file is
* partitioned coarsely among several nodes. If the ranges
* do not overlap, each node can specify which range of the
* file it will access, with a performance improvement in
* some cases, such as for sequential writing within a
* range.
*
* Subsequent GPFS_ACCESS_RANGE hints will replace a hint
* passed earlier.
*
* START - The start of the access range offset, in
* bytes, from the beginning of the file
* LENGTH - Length of the access range. 0 indicates to
* the end of the file
* IS_WRITE - 0 indicates READ access, 1 indicates WRITE access
* Return: Nothing
* Programmer: Bill Wendling, 03. June 2002
* Modifications:
*/
static void
gpfs_access_range(int handle, off_t start, off_t length, int is_write)
{
struct {
gpfsFcntlHeader_t hdr;
gpfsAccessRange_t access;
} access_range;
access_range.hdr.totalLength = sizeof(access_range);
access_range.hdr.fcntlVersion = GPFS_FCNTL_CURRENT_VERSION;
access_range.hdr.fcntlReserved = 0;
access_range.access.structLen = sizeof(gpfsAccessRange_t);
access_range.access.structType = GPFS_ACCESS_RANGE;
access_range.access.start = start;
access_range.access.length = length;
access_range.access.isWrite = is_write;
if (gpfs_fcntl(handle, &access_range) != 0) {
fprintf(stderr,
"gpfs_fcntl DS start directive failed. errno=%d errorOffset=%d\n",
errno, access_range.hdr.errorOffset);
exit(EXIT_FAILURE);
}
}
/*
* Function: gpfs_free_range
* Purpose: Undeclares an access range within a file for an
* application.
*
* The application will no longer access file offsets within
* the given range. GPFS flushes the data at the file
* offsets and removes it from the cache.
*
* Multi-node applications that have finished one phase of
* their computation may wish to use this hint before the
* file is accessed in a conflicting mode from another node
* in a later phase. The potential performance benefit is
* that GPFS can avoid later synchronous cache consistency
* operations.
*
* START - The start of the access range offset, in
* bytes from the beginning of the file.
* LENGTH - Length of the access range. 0 indicates to
* the end of the file.
* Return: Nothing
* Programmer: Bill Wendling, 03. June 2002
* Modifications:
*/
static void
gpfs_free_range(int handle, off_t start, off_t length)
{
struct {
gpfsFcntlHeader_t hdr;
gpfsFreeRange_t range;
} free_range;
/* Issue the invalidate hint */
free_range.hdr.totalLength = sizeof(free_range);
free_range.hdr.fcntlVersion = GPFS_FCNTL_CURRENT_VERSION;
free_range.hdr.fcntlReserved = 0;
free_range.range.structLen = sizeof(gpfsFreeRange_t);
free_range.range.structType = GPFS_FREE_RANGE;
free_range.range.start = start;
free_range.range.length = length;
if (gpfs_fcntl(handle, &free_range) != 0) {
fprintf(stderr,
"gpfs_fcntl free range failed for range %d:%d. errno=%d errorOffset=%d\n",
start, length, errno, free_range.hdr.errorOffset);
exit(EXIT_FAILURE);
}
}
/*
* Function: gpfs_clear_file_cache
* Purpose: Indicates file access in the near future is not expected.
*
* The application does not expect to make any further
* accesses to the file in the near future, so GPFS removes
* any data or metadata pertaining to the file from its
* cache.
*
* Multi-node applications that have finished one phase of
* their computation may wish to use this hint before the
* file is accessed in a conflicting mode from another node
* in a later phase. The potential performance benefit is
* that GPFS can avoid later synchronous cache consistency
* operations.
* Return: Nothing
* Programmer: Bill Wendling, 03. June 2002
* Modifications:
*/
static void
gpfs_clear_file_cache(int handle)
{
struct {
gpfsFcntlHeader_t hdr;
gpfsClearFileCache_t clear;
} clear_cache;
clear_cache.hdr.totalLength = sizeof(clear_cache);
clear_cache.hdr.fcntlVersion = GPFS_FCNTL_CURRENT_VERSION;
clear_cache.hdr.fcntlReserved = 0;
clear_cache.clear.structLen = sizeof(gpfsClearFileCache_t);
clear_cache.clear.structType = GPFS_CLEAR_FILE_CACHE;
if (gpfs_fcntl(handle, &clear_cache) != 0) {
fprintf(stderr,
"gpfs_fcntl clear file cache directive failed. errno=%d errorOffset=%d\n",
errno, clear_cache.hdr.errorOffset);
exit(EXIT_FAILURE);
}
}
/*
* Function: gpfs_cancel_hints
* Purpose: Indicates to remove any hints against the open file
* handle.
*
* GPFS removes any hints that may have been issued against
* this open file handle:
*
* - The hint status of the file is restored ot what it
* would have been immediately after being opened, but
* does not affect the contents of the GPFS file
* cache. Cancelling an earlier hint that resulted in
* data being removed from the GPFS file cache does
* not bring that data back int othe cache; data
* re-enters the cache only pon access by the
* application or by user-driven or automatic
* prefetching.
* - Only the GPFS_MULTIPLE_ACCESS_RANGE hint has a
* state that might be removed by the
* GPFS_CANCEL_HINTS directive.
* Return: Nothing
* Programmer: Bill Wendling, 03. June 2002
* Modifications:
*/
static void
gpfs_cancel_hints(int handle)
{
struct {
gpfsFcntlHeader_t hdr;
gpfsCancelHints_t cancel;
} cancel_hints;
cancel_hints.hdr.totalLength = sizeof(cancel_hints);
cancel_hints.hdr.fcntlVersion = GPFS_FCNTL_CURRENT_VERSION;
cancel_hints.hdr.fcntlReserved = 0;
cancel_hints.cancel.structLen = sizeof(gpfsCancelHints_t);
cancel_hints.cancel.structType = GPFS_CANCEL_HINTS;
if (gpfs_fcntl(handle, &cancel_hints) != 0) {
fprintf(stderr,
"gpfs_fcntl cancel hints directive failed. errno=%d errorOffset=%d\n",
errno, cancel_hints.hdr.errorOffset);
exit(EXIT_FAILURE);
}
}
/*
* Function: gpfs_start_data_shipping
* Purpose: Initiates data shipping mode.
*
* Once all participating threads have issued this directive
* for a file, GPFS enters a mode where it logically
* partitions the blocks of the file among a group of agent
* nodes. The agents are those nodes on which one or more
* threads have issued the GPFS_DATA_SHIP_START directive.
* Each thread that has issued a GPFS_DATA_SHIP_START
* directive and the associated agent nodes are referred to
* as the data shipping collective.
*
* The second parameter is the total number of open
* instances on all nodes that will be operating on the
* file. Must be called for every such instance with the
* same value of NUM_INSTS.
*
* NUM_INSTS - The number of open file instances, on all
* nodes, collaborating to operate on the file
* Return: Nothing
* Programmer: Bill Wendling, 28. May 2002
* Modifications:
*/
static void
gpfs_start_data_shipping(int handle, int num_insts)
{
struct {
gpfsFcntlHeader_t hdr;
gpfsDataShipStart_t start;
} ds_start;
ds_start.hdr.totalLength = sizeof(ds_start);
ds_start.hdr.fcntlVersion = GPFS_FCNTL_CURRENT_VERSION;
ds_start.hdr.fcntlReserved = 0;
ds_start.start.structLen = sizeof(gpfsDataShipStart_t);
ds_start.start.structType = GPFS_DATA_SHIP_START;
ds_start.start.numInstances = num_insts;
ds_start.start.reserved = 0;
if (gpfs_fcntl(handle, &ds_start) != 0) {
fprintf(stderr,
"gpfs_fcntl DS start directive failed. errno=%d errorOffset=%d\n",
errno, ds_start.hdr.errorOffset);
exit(EXIT_FAILURE);
}
}
/*
* Function: gpfs_start_data_ship_map
* Purpose: Indicates which agent nodes are to be used for data
* shipping. GPFS recognizes which agent nodes to use for
* data shipping.
*
* PARTITION_SIZE - The number of contiguous bytes per
* server. This value must be a
* multiple of the number of bytes in a
* single file system block
* AGENT_COUNT - The number of entries in the
* agentNodeNumber array
* AGENT_NODE_NUM - The data ship agent node numbers as
* listed in the SDT or the global ODM
*
* Return: Nothing
* Programmer: Bill Wendling, 10. Jul 2002
* Modifications:
*/
static void
gpfs_start_data_ship_map(int handle, int partition_size, int agent_count,
int *agent_node_num)
{
int i;
struct {
gpfsFcntlHeader_t hdr;
gpfsDataShipMap_t map;
} ds_map;
ds_map.hdr.totalLength = sizeof(ds_map);
ds_map.hdr.fcntlVersion = GPFS_FCNTL_CURRENT_VERSION;
ds_map.hdr.fcntlReserved = 0;
ds_map.map.structLen = sizeof(gpfsDataShipMap_t);
ds_map.map.structType = GPFS_DATA_SHIP_MAP;
ds_map.map.partitionSize = partition_size;
ds_map.map.agentCount = agent_count;
for (i = 0; i < agent_count; ++i)
ds_map.map.agentNodeNumber[i] = agent_node_num[i];
if (gpfs_fcntl(handle, &ds_map) != 0) {
fprintf(stderr,
"gpfs_fcntl DS map directive failed. errno=%d errorOffset=%d\n",
errno, ds_map.hdr.errorOffset);
exit(EXIT_FAILURE);
}
}
/*
* Function: gpfs_stop_data_shipping
* Purpose: Takes a file out of the data shipping mode.
*
* - GPFS waits for all threads that issued the
* GPFS_DATA_SHIP_START directive to issue this directive,
* then flushes the dirty file data to disk.
*
* - While a gpfs_cntl() call is blocked for other threads,
* the call can be interrupted by any signal. If a signal
* is delivered to any of the waiting calls, all waiting
* calls on every node will be interrupted and will return
* EINTR. GPFS will not cancel data shipping mode if such
* a signal occurs. It is the responsibility of the
* application to mask off any signals that might normally
* occur while waiting for another node in the data
* shipping collective. Several libraries use SIGALRM; the
* thread that makes the gpfs_fcntl() call should use
* sigthreadmask to mask off delivery of this signal while
* inside the call.
* Return: Nothing
* Programmer: Bill Wendling, 28. May 2002
* Modifications:
*/
static void
gpfs_stop_data_shipping(int handle)
{
struct {
gpfsFcntlHeader_t hdr;
gpfsDataShipStop_t stop;
} ds_stop;
ds_stop.hdr.totalLength = sizeof(ds_stop);
ds_stop.hdr.fcntlVersion = GPFS_FCNTL_CURRENT_VERSION;
ds_stop.hdr.fcntlReserved = 0;
ds_stop.stop.structLen = sizeof(ds_stop.stop);
ds_stop.stop.structType = GPFS_DATA_SHIP_STOP;
if (gpfs_fcntl(handle, &ds_stop) != 0)
fprintf(stderr,
"gpfs_fcntl DS stop directive failed. errno=%d errorOffset=%d\n",
errno, ds_stop.hdr.errorOffset);
}
/*
* Function: gpfs_invalidate_file_cache
* Purpose: Invalidate all cached data held on behalf of a file on
* this node.
* Return: Nothing
* Programmer: Bill Wendling, 03. June 2002
* Modifications:
*/
static void
gpfs_invalidate_file_cache(const char *filename)
{
int handle;
struct {
gpfsFcntlHeader_t hdr;
gpfsClearFileCache_t inv;
} inv_cache_hint;
/* Open the file. If the open fails, the file cannot be cached. */
handle = open(filename, O_RDONLY, 0);
if (handle == -1)
return;
/* Issue the invalidate hint */
inv_cache_hint.hdr.totalLength = sizeof(inv_cache_hint);
inv_cache_hint.hdr.fcntlVersion = GPFS_FCNTL_CURRENT_VERSION;
inv_cache_hint.hdr.fcntlReserved = 0;
inv_cache_hint.inv.structLen = sizeof(gpfsClearFileCache_t);
inv_cache_hint.inv.structType = GPFS_CLEAR_FILE_CACHE;
if (gpfs_fcntl(handle, &inv_cache_hint) != 0) {
fprintf(stderr,
"gpfs_fcntl clear cache hint failed for file '%s'.",
filename);
fprintf(stderr, " errno=%d errorOffset=%d\n",
errno, inv_cache_hint.hdr.errorOffset);
exit(1);
}
/* Close the file */
if (close(handle) == -1) {
fprintf(stderr,
"could not close file '%s' after flushing file cache, ",
filename);
fprintf(stderr, "errno=%d\n", errno);
exit(1);
}
}
#else
/* turn the stubs off since some compilers are warning they are not used */
#if 0
/* H5_HAVE_GPFS isn't defined...stub functions */
static void
gpfs_access_range(int UNUSED handle, off_t UNUSED start, off_t UNUSED length,
int UNUSED is_write)
{
return;
}
static void
gpfs_free_range(int UNUSED handle, off_t UNUSED start, off_t UNUSED length)
{
return;
}
static void
gpfs_clear_file_cache(int UNUSED handle)
{
return;
}
static void
gpfs_cancel_hints(int UNUSED handle)
{
return;
}
static void
gpfs_start_data_shipping(int UNUSED handle, int UNUSED num_insts)
{
return;
}
static void
gpfs_stop_data_shipping(int UNUSED handle)
{
return;
}
static void
gpfs_start_data_ship_map(int UNUSED handle, int UNUSED partition_size,
int UNUSED agent_count, int UNUSED *agent_node_num)
{
return;
}
static void
gpfs_invalidate_file_cache(const char UNUSED *filename)
{
return;
}
#endif /* 0 */
#endif /* H5_HAVE_GPFS */
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