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authorAlbert Cheng <acheng@hdfgroup.org>2001-11-07 15:28:33 (GMT)
committerAlbert Cheng <acheng@hdfgroup.org>2001-11-07 15:28:33 (GMT)
commitbb76b558e6d5c3e1c35a5f08da480435db039e19 (patch)
tree9eac65359e20b54a5d367ee7a501e901edf826a8 /perform
parent965e3bc3e20cefeb81b0b88002c1dc42d197c2ff (diff)
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[svn-r4592] Purpose:
New addition Description: Initial version of the Parallel I/O performance measurement program. Not fully implemented yet but checking them in before I may destroy them by accident. Don't run this in small file system (like AFS or eirene) since it generates gigabytes test files. Platforms tested: modi4 64bits. It compiled and ran but took a long time because the current test parametes are too "wild".
Diffstat (limited to 'perform')
-rw-r--r--perform/Dependencies74
-rw-r--r--perform/Makefile.in21
-rw-r--r--perform/pio_engine.c832
-rw-r--r--perform/pio_perf.c324
-rw-r--r--perform/pio_perf.h26
-rw-r--r--perform/pio_timer.c137
-rw-r--r--perform/pio_timer.h70
7 files changed, 1473 insertions, 11 deletions
diff --git a/perform/Dependencies b/perform/Dependencies
index 173aa04..bfbe986 100644
--- a/perform/Dependencies
+++ b/perform/Dependencies
@@ -38,6 +38,76 @@ iopipe.lo: \
$(top_srcdir)/src/H5FDlog.h \
$(top_srcdir)/src/H5private.h \
$(top_builddir)/src/H5config.h
+mpi-perf.lo: \
+ $(srcdir)/mpi-perf.c \
+ $(top_srcdir)/src/hdf5.h \
+ $(top_srcdir)/src/H5public.h \
+ $(top_builddir)/src/H5pubconf.h \
+ $(top_srcdir)/src/H5api_adpt.h \
+ $(top_srcdir)/src/H5Ipublic.h \
+ $(top_srcdir)/src/H5Apublic.h \
+ $(top_srcdir)/src/H5ACpublic.h \
+ $(top_srcdir)/src/H5Bpublic.h \
+ $(top_srcdir)/src/H5Dpublic.h \
+ $(top_srcdir)/src/H5Epublic.h \
+ $(top_srcdir)/src/H5Fpublic.h \
+ $(top_srcdir)/src/H5FDpublic.h \
+ $(top_srcdir)/src/H5Gpublic.h \
+ $(top_srcdir)/src/H5HGpublic.h \
+ $(top_srcdir)/src/H5HLpublic.h \
+ $(top_srcdir)/src/H5MMpublic.h \
+ $(top_srcdir)/src/H5Opublic.h \
+ $(top_srcdir)/src/H5Ppublic.h \
+ $(top_srcdir)/src/H5Zpublic.h \
+ $(top_srcdir)/src/H5Rpublic.h \
+ $(top_srcdir)/src/H5Spublic.h \
+ $(top_srcdir)/src/H5Tpublic.h \
+ $(top_srcdir)/src/H5FDcore.h \
+ $(top_srcdir)/src/H5FDfamily.h \
+ $(top_srcdir)/src/H5FDmpio.h \
+ $(top_srcdir)/src/H5FDsec2.h \
+ $(top_srcdir)/src/H5FDstdio.h \
+ $(top_srcdir)/src/H5FDsrb.h \
+ $(top_srcdir)/src/H5FDgass.h \
+ $(top_srcdir)/src/H5FDdpss.h \
+ $(top_srcdir)/src/H5FDstream.h \
+ $(top_srcdir)/src/H5FDmulti.h \
+ $(top_srcdir)/src/H5FDlog.h
+perf.lo: \
+ $(srcdir)/perf.c \
+ $(top_srcdir)/src/hdf5.h \
+ $(top_srcdir)/src/H5public.h \
+ $(top_builddir)/src/H5pubconf.h \
+ $(top_srcdir)/src/H5api_adpt.h \
+ $(top_srcdir)/src/H5Ipublic.h \
+ $(top_srcdir)/src/H5Apublic.h \
+ $(top_srcdir)/src/H5ACpublic.h \
+ $(top_srcdir)/src/H5Bpublic.h \
+ $(top_srcdir)/src/H5Dpublic.h \
+ $(top_srcdir)/src/H5Epublic.h \
+ $(top_srcdir)/src/H5Fpublic.h \
+ $(top_srcdir)/src/H5FDpublic.h \
+ $(top_srcdir)/src/H5Gpublic.h \
+ $(top_srcdir)/src/H5HGpublic.h \
+ $(top_srcdir)/src/H5HLpublic.h \
+ $(top_srcdir)/src/H5MMpublic.h \
+ $(top_srcdir)/src/H5Opublic.h \
+ $(top_srcdir)/src/H5Ppublic.h \
+ $(top_srcdir)/src/H5Zpublic.h \
+ $(top_srcdir)/src/H5Rpublic.h \
+ $(top_srcdir)/src/H5Spublic.h \
+ $(top_srcdir)/src/H5Tpublic.h \
+ $(top_srcdir)/src/H5FDcore.h \
+ $(top_srcdir)/src/H5FDfamily.h \
+ $(top_srcdir)/src/H5FDmpio.h \
+ $(top_srcdir)/src/H5FDsec2.h \
+ $(top_srcdir)/src/H5FDstdio.h \
+ $(top_srcdir)/src/H5FDsrb.h \
+ $(top_srcdir)/src/H5FDgass.h \
+ $(top_srcdir)/src/H5FDdpss.h \
+ $(top_srcdir)/src/H5FDstream.h \
+ $(top_srcdir)/src/H5FDmulti.h \
+ $(top_srcdir)/src/H5FDlog.h
chunk.lo: \
$(srcdir)/chunk.c \
$(top_srcdir)/src/hdf5.h \
@@ -108,7 +178,3 @@ overhead.lo: \
$(top_srcdir)/src/H5FDstream.h \
$(top_srcdir)/src/H5FDmulti.h \
$(top_srcdir)/src/H5FDlog.h
-mpi-perf.lo: \
- $(srcdir)/mpi-perf.c
-perf.lo: \
- $(srcdir)/perf.c
diff --git a/perform/Makefile.in b/perform/Makefile.in
index 31c6149..d1b967e 100644
--- a/perform/Makefile.in
+++ b/perform/Makefile.in
@@ -1,7 +1,8 @@
## HDF5 Library Performance Makefile(.in)
##
-## Copyright (C) 2001 National Center for Supercomputing Applications.
-## All rights reserved.
+## Copyright (C) 2001
+## National Center for Supercomputing Applications.
+## All rights reserved.
##
top_srcdir=@top_srcdir@
top_builddir=..
@@ -10,13 +11,14 @@ srcdir=@srcdir@
## Add include directory to the C preprocessor flags and the hdf5 library
## to the library list.
-CPPFLAGS=-I. -I$(srcdir) -I../src -I$(top_srcdir)/src @CPPFLAGS@
+CPPFLAGS=-I. -I$(srcdir) -I../src -I$(top_srcdir)/src -I$(top_srcdir)/tools/lib @CPPFLAGS@
LIBHDF5=../src/libhdf5.la
LIBH5TEST=../test/libh5test.la
+LIBH5TOOLS=../tools/lib/libh5tools.la
## These are the programs that `make all' or `make tests' will build and which
## `make check' will run. List them in the order they should be run.
-TEST_PROGS_PARA=mpi-perf perf
+TEST_PROGS_PARA=mpi-perf perf pio_perf
TEST_PROGS=iopipe chunk overhead
## These are the files that `make clean' (and derivatives) will remove from
@@ -26,14 +28,19 @@ CLEAN=*.h5 *.raw *.dat x-gnuplot
## List all source files here. The list of object files will be
## created by replacing the `.c' with a `.o'. This list is necessary
## for building automatic dependencies.
-TEST_SRC_PARA=mpi-perf.c perf.c
-TEST_SRC=iopipe.c chunk.c overhead.c \
- $(TEST_SRC_PARA)
+PIO_PERF_SRC=pio_perf.c pio_engine.c pio_timer.c
+TEST_SRC_PARA=mpi-perf.c perf.c $(PIO_PERF_SRC)
+TEST_SRC=iopipe.c chunk.c overhead.c $(TEST_SRC_PARA)
+PIO_PERF_OBJ=$(PIO_PERF_SRC:.c=.lo)
TEST_OBJ=$(TEST_SRC:.c=.lo)
## How to build the programs... they all depend on the hdf5 library
$(TEST_PROGS) $(TEST_PROGS_PARA): $(LIBHDF5)
+pio_perf: $(PIO_PERF_OBJ)
+ @$(LT_LINK_EXE) $(CFLAGS) -o $@ $(PIO_PERF_OBJ) $(LIBH5TEST) \
+ $(LIBHDF5) $(LDFLAGS) $(LIBH5TOOLS) $(LIBS)
+
perf: perf.lo
@$(LT_LINK_EXE) $(CFLAGS) -o $@ perf.lo $(LIBH5TEST) $(LIBHDF5) \
$(LDFLAGS) $(LIBS)
diff --git a/perform/pio_engine.c b/perform/pio_engine.c
new file mode 100644
index 0000000..f54114c
--- /dev/null
+++ b/perform/pio_engine.c
@@ -0,0 +1,832 @@
+/*
+ * Author: Albert Cheng of NCSA, Oct 24, 2001.
+ */
+
+#include "hdf5.h"
+#ifdef H5_HAVE_PARALLEL
+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include "pio_perf.h"
+#include "pio_timer.h"
+#ifdef OLDSTUFF
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
+#include <sys/time.h>
+#endif /* OLDSTUFF */
+#include <mpi.h>
+#ifndef MPI_FILE_NULL /*MPIO may be defined in mpi.h already */
+# include <mpio.h>
+#endif
+
+
+/* Macro definitions */
+#define GOTOERROR(errcode) {ret_code=errcode; goto done;}
+#define GOTODONE {goto done;}
+#define ERRMSG(mesg) { \
+ fprintf(stderr, "Proc %d: ", myrank); \
+ fprintf(stderr, "*** Assertion failed (%s) at line %4d in %s\n", \
+ mesg, (int)__LINE__, __FILE__); \
+}
+#define MSG(mesg) { \
+ fprintf(stderr, "Proc %d: ", myrank); \
+ 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(1); \
+ } \
+} while(0)
+
+#ifndef HDmalloc
+#define HDmalloc(x) malloc(x)
+#endif
+
+#ifndef HDfree
+#define HDfree(x) free(x)
+#endif
+
+#ifndef HDopen
+#ifdef O_BINARY
+#define HDopen(S,F,M) open(S,F|_O_BINARY,M)
+#else
+#define HDopen(S,F,M) open(S,F,M)
+#endif
+#endif
+
+#ifndef HDclose
+#define HDclose(F) close(F)
+#endif
+
+#ifndef HDseek
+#define HDseek(F,L,W) lseek(F,L,W)
+#endif
+
+#ifndef HDwrite
+#define HDwrite(F,B,S) write(F,B,S)
+#endif
+
+#ifndef HDread
+#define HDread(F,B,S) read(F,B,S)
+#endif
+
+/* Raw I/O macros */
+#define RAWCREATE(fn) HDopen(fn, O_CREAT|O_TRUNC|O_RDWR, 0600)
+#define RAWOPEN(fn, F) HDopen(fn, F, 0600)
+#define RAWCLOSE(F) HDclose(F)
+#define RAWSEEK(F,L) HDseek(F,L,SEEK_SET)
+#define RAWWRITE(F,B,S) HDwrite(F,B,S)
+#define RAWREAD(F,B,S) HDread(F,B,S)
+
+
+
+#ifdef OLDSTUFF
+hid_t dataset; /* Dataset ID */
+char *meta_ext, *raw_ext; /* holds the meta and raw file extension if */
+ /* opt_split_vfd is set */
+
+
+/* DEFAULT VALUES FOR OPTIONS */
+int64_t opt_block = 1048576*16;
+int opt_iter = 1;
+int opt_stripe = -1;
+int opt_correct = 0;
+int amode = O_RDWR | O_CREAT;
+char opt_file[256] = "/tmp/test.out\0";
+char opt_pvfstab[256] = "notset\0";
+int opt_pvfstab_set = 0;
+
+/* function prototypes */
+double Wtime(void);
+
+extern int errno;
+extern int debug_on;
+
+/* globals needed for getopt */
+extern char *optarg;
+extern int optind, opterr;
+#endif /* old stuff */
+
+int
+dopio(parameters param)
+{
+ MPI_Comm comm = MPI_COMM_NULL;
+ int myrank;
+ int nprocs=1;
+ int ret_code=0; /* return code */
+ iotype iot;
+ char fname[256];
+ unsigned int maxprocs;
+ unsigned int nfiles, nf;
+ unsigned long ndsets, nd;
+ unsigned long nelmts;
+ unsigned int niters;
+ unsigned long nelmts_towrite, nelmts_written;
+ unsigned long nelmts_toread, nelmts_read;
+ size_t elmt_size;
+ off_t dset_offset; /*dataset offset in a file */
+ off_t next_offset; /*offset of next I/O */
+ int rc; /*routine return code */
+ int color; /*for communicator creation */
+ int mrc; /*mpi return code */
+ char *buffer=NULL; /*data buffer pointer */
+ size_t buffer_size=1024*1024; /*data buffer size, 1MB */
+ size_t nelmts_in_buffer; /*Number of elmts the buffer*/
+ /*can hold.*/
+ size_t dset_size; /*one dataset size in Byte*/
+ int rawfd=-1; /*Raw IO file handle */
+ MPI_File mpifd=MPI_FILE_NULL; /*MPI IO file handle */
+ /* hdf5 variables */
+ hid_t acc_tpl=-1; /* File access templates */
+ hid_t h5fd=-1; /*HDF5 IO file handle */
+ herr_t hrc; /*HDF5 return code */
+ hsize_t h5dims[1]; /* dataset dim sizes */
+ hsize_t h5block[1], h5stride[1], h5count[1];
+ hssize_t h5start[1];
+ hid_t h5dset_space_id = -1; /*Dataset space ID */
+ hid_t h5mem_space_id = -1; /*memory dataspace ID */
+ char dname[64]; /*dataset name */
+ hid_t h5ds_id = -1; /*Dataset handle*/
+
+#ifdef OLDSTUFF
+ char *buf, *tmp, *buf2, *tmp2, *check;
+ int i, j, myrank=0, nprocs=1, err, my_correct = 1, correct, myerrno;
+ double stim, etim;
+ double write_tim = 0;
+ double read_tim = 0;
+ double read_bw, write_bw;
+ double max_read_tim, max_write_tim;
+ double min_read_tim, min_write_tim;
+ double ave_read_tim, ave_write_tim;
+ int64_t iter_jump = 0;
+ int64_t seek_position = 0;
+ MPI_File fh;
+ MPI_Status status;
+ int nchars;
+#endif /* OLDSTUFF */
+
+
+ /*
+ *Setup parameters and sanity check
+ */
+ /* IO type */
+ iot = param.io_type;
+ switch (iot) {
+ case RAW:
+ /* nothing */
+ break;
+ case MPIO:
+ break;
+ case PHDF5:
+ break;
+ default:
+ /* unknown request */
+ fprintf(stderr, "Unknown IO type request (%d)\n", iot);
+ GOTOERROR(1);
+ }
+
+ /* number of files */
+ nfiles = param.num_files;
+
+ /* number of datasets per file */
+ ndsets = param.num_dsets;
+
+ /* number of elements per dataset */
+ nelmts = param.num_elmts;
+ if (nelmts == 0 ){
+ fprintf(stderr,
+ "number of elements per dataset must be positive (%lu)\n",
+ nelmts);
+ GOTOERROR(1);
+ }
+
+ /* number of iterations of reads or writes */
+ niters = param.num_iters;
+
+ /* maximun number of mpi-processes to use */
+ maxprocs = param.max_num_procs;
+ if (maxprocs == 0 ){
+ fprintf(stderr,
+ "maximun number of process to use must be positive (%u)\n",
+ maxprocs);
+ GOTOERROR(1);
+ }
+ MPI_Comm_size(MPI_COMM_WORLD, &nprocs);
+ if (maxprocs > nprocs){
+ fprintf(stderr,
+ "maximun number of process(%d) must be <= process in MPI_COMM_WORLD(%d)\n",
+ maxprocs, nprocs);
+ GOTOERROR(1);
+ }
+
+
+/* DEBUG*/
+fprintf(stderr, "nfiles=%u\n", nfiles);
+fprintf(stderr, "ndsets=%lu\n", ndsets);
+fprintf(stderr, "nelmts=%lu\n", nelmts);
+fprintf(stderr, "niters=%u\n", niters);
+fprintf(stderr, "maxprocs=%u\n", maxprocs);
+nfiles=3;
+/*ndsets=5; */
+
+ /*
+ *Create a sub communicator for this run
+ *Easier to use the first N processes.
+ */
+ MPI_Comm_rank(comm, &myrank);
+ color = (myrank < maxprocs);
+ mrc = MPI_Comm_split (MPI_COMM_WORLD, color, myrank, &comm);
+ if (mrc!=MPI_SUCCESS) {
+ fprintf(stderr, "MPI_Comm_split failed\n");
+ GOTOERROR(1);
+ }
+
+ if (!color){ /* not involved in this run */
+ mrc = MPI_Comm_free(&comm);
+ GOTODONE;
+ }
+
+ /* determine the mpi rank of in the new comm */
+ MPI_Comm_size(comm, &nprocs);
+ MPI_Comm_rank(comm, &myrank);
+
+ /* Calculate dataset parameters */
+ /* Data type is always native C int */
+ elmt_size = sizeof(int);
+ dset_size = nelmts * elmt_size;
+
+ /* allocate data buffer */
+ buffer = HDmalloc(buffer_size);
+ if (buffer == NULL){
+ fprintf(stderr, "malloc for data buffer failed\n");
+ GOTOERROR(1);
+ }
+ nelmts_in_buffer = buffer_size/elmt_size;
+
+ /* hdf5 dataset setup */
+ if (iot == PHDF5){
+ /* define a contiquous dataset of nelmts native ints */
+ h5dims[0] = nelmts;
+ h5dset_space_id = H5Screate_simple (1, h5dims, NULL);
+ VRFY((h5dset_space_id >= 0), "H5Screate_simple");
+
+ /* create the memory dataspace */
+ h5dims[0] = nelmts_in_buffer;
+ h5mem_space_id = H5Screate_simple (1, h5dims, NULL);
+ VRFY((h5mem_space_id >= 0), "H5Screate_simple");
+ }
+
+
+
+
+
+ for (nf=1; nf <= nfiles; nf++){
+ /*
+ *Open file for write
+ */
+MSG("creating file");
+ sprintf(fname, "#pio_tmp_%u", nf);
+ switch (iot) {
+ case RAW:
+ strcat(fname, ".raw");
+ rawfd = RAWCREATE(fname);
+ if (rawfd < 0 ){
+ fprintf(stderr, "Raw File Create failed(%s)\n", fname);
+ GOTOERROR(1);
+ }
+ break;
+ case MPIO:
+ strcat(fname, ".mpio");
+ mrc = MPI_File_open(comm, fname, MPI_MODE_CREATE|MPI_MODE_RDWR,
+ MPI_INFO_NULL, &mpifd);
+ if (mrc != MPI_SUCCESS){
+ fprintf(stderr, "MPI File Create failed(%s)\n", fname);
+ GOTOERROR(1);
+ }
+ break;
+ case PHDF5:
+ strcat(fname, ".h5");
+ acc_tpl = H5Pcreate (H5P_FILE_ACCESS);
+ VRFY((acc_tpl >= 0), "");
+ hrc = H5Pset_fapl_mpio(acc_tpl, comm, MPI_INFO_NULL);
+ VRFY((hrc >= 0), "");
+ /*do not close acc_tpl. It will used to open file for read later*/
+ /* create the parallel file */
+ h5fd=H5Fcreate(fname,H5F_ACC_TRUNC,H5P_DEFAULT,acc_tpl);
+ if (h5fd < 0){
+ fprintf(stderr, "HDF5 file Create failed(%s)\n", fname);
+ GOTOERROR(1);
+ }
+ break;
+ }
+
+ for (nd=1; nd <= ndsets; nd++){
+ /* Calculate dataset offset within a file */
+
+ /* create dataset */
+ switch (iot){
+ case RAW:
+ case MPIO:
+ /* both raw and mpi io just need dataset offset in file*/
+ dset_offset = (nd-1)*dset_size;
+ break;
+ case PHDF5:
+ sprintf(dname, "Dataset_%lu", nd);
+ h5ds_id = H5Dcreate(h5fd, dname, H5T_NATIVE_INT, h5dset_space_id,
+ H5P_DEFAULT);
+ VRFY((h5ds_id >= 0), "H5Dcreate");
+ break;
+ }
+
+
+ nelmts_written = 0 ;
+ while (nelmts_written < nelmts){
+ nelmts_towrite = nelmts - nelmts_written;
+ if (nelmts - nelmts_written >= nelmts_in_buffer){
+ nelmts_towrite = nelmts_in_buffer;
+ }else{
+ /* last write of a partial buffer */
+ nelmts_towrite = nelmts - nelmts_written;
+ }
+
+ /*Prepare write data*/
+ {
+ int *intptr = (int*)buffer;
+ int i;
+ for (i=0; i<nelmts_towrite; i++){
+ *intptr++ = nelmts_towrite+i;
+ }
+ }
+
+
+ /* Write */
+
+ /* Calculate offset of write within a dataset/file */
+ switch (iot){
+ case RAW:
+ RAWSEEK(rawfd, dset_offset+nelmts_written*elmt_size);
+ RAWWRITE(rawfd, buffer, nelmts_towrite*elmt_size);
+ break;
+ case MPIO:
+ break;
+ }
+
+
+ nelmts_written += nelmts_towrite;
+fprintf(stderr, "wrote %lu elmts, %lu written\n", nelmts_towrite, nelmts_written);
+ }
+ /* Calculate write time */
+
+ /* Close dataset. Only HDF5 needs to do an explicit close. */
+ if (iot == PHDF5){
+ hrc = H5Dclose(h5ds_id);
+ VRFY((hrc>=0), "HDF5 Dataset Close failed\n");
+ h5ds_id = -1;
+ }
+ }
+
+ /* Close file for write */
+MSG("closing write file");
+ switch (iot) {
+ case RAW:
+ rc = RAWCLOSE(rawfd);
+ VRFY((rc==0), "HDclose");
+ rawfd = -1;
+ break;
+ case MPIO:
+ mrc = MPI_File_close(&mpifd);
+ if (mrc != MPI_SUCCESS){
+ fprintf(stderr, "MPI File close failed\n");
+ GOTOERROR(1);
+ }
+ break;
+ case PHDF5:
+ hrc=H5Fclose(h5fd);
+ if (hrc < 0){
+ fprintf(stderr, "HDF5 File Close failed(%s)\n", fname);
+ GOTOERROR(1);
+ }else{
+ h5fd=-1;
+ }
+ break;
+ }
+
+
+
+
+ /* Open file for read */
+MSG("opening file to read");
+ switch (iot) {
+ case RAW:
+ rawfd = RAWOPEN(fname, O_RDONLY);
+ if (rawfd < 0 ){
+ fprintf(stderr, "Raw File Open failed(%s)\n", fname);
+ GOTOERROR(1);
+ }
+ break;
+ case MPIO:
+ mrc = MPI_File_open(comm, fname, MPI_MODE_RDONLY,
+ MPI_INFO_NULL, &mpifd);
+ if (mrc != MPI_SUCCESS){
+ fprintf(stderr, "MPI File Open failed(%s)\n", fname);
+ GOTOERROR(1);
+ }
+ break;
+ case PHDF5:
+ /* open the parallel file */
+ h5fd=H5Fopen(fname,H5P_DEFAULT,acc_tpl);
+ if (h5fd < 0){
+ fprintf(stderr, "HDF5 file Open failed(%s)\n", fname);
+ GOTOERROR(1);
+ }
+ /* can release acc_tpl now */
+ hrc = H5Pclose(acc_tpl);
+ VRFY((hrc >= 0), "H5Pclose");
+ acc_tpl = -1;
+ break;
+ }
+
+ /* Calculate dataset offset within a file */
+
+ /* Open dataset for read */
+
+ /* Prepare read */
+
+ /* Calculate offset of read within a dataset/file */
+
+ /* Read */
+
+ /* Calculate read time */
+
+ /* Close dataset for read */
+
+ /* Close file for read */
+MSG("closing read file");
+ switch (iot) {
+ case RAW:
+ rc = RAWCLOSE(rawfd);
+ VRFY((rc==0), "HDclose");
+ rawfd = -1;
+ break;
+ case MPIO:
+ mrc = MPI_File_close(&mpifd);
+ if (mrc != MPI_SUCCESS){
+ fprintf(stderr, "MPI File close failed\n");
+ GOTOERROR(1);
+ }
+ break;
+ case PHDF5:
+ hrc=H5Fclose(h5fd);
+ if (h5fd < 0){
+ fprintf(stderr, "HDF5 file Create failed(%s)\n", fname);
+ GOTOERROR(1);
+ }else{
+ h5fd=-1;
+ }
+ break;
+ }
+
+ }
+
+done:
+ /* clean up */
+ /* release HDF5 objects */
+ if (acc_tpl != -1){
+ hrc = H5Pclose(acc_tpl);
+ if (hrc < 0){
+ fprintf(stderr, "HDF5 Property List Close failed\n");
+ ret_code=1;
+ }
+ else
+ acc_tpl = -1;
+ }
+ if (h5dset_space_id != -1){
+ hrc = H5Sclose(h5dset_space_id);
+ if (hrc < 0){
+ fprintf(stderr, "HDF5 Dataset Space Close failed\n");
+ ret_code=1;
+ }
+ 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=1;
+ }
+ else
+ h5mem_space_id = -1;
+ }
+ if (h5ds_id != -1){
+ hrc = H5Dclose(h5ds_id);
+ if (hrc < 0){
+ fprintf(stderr, "HDF5 Dataset Close failed\n");
+ ret_code=1;
+ }
+ else
+ h5ds_id = -1;
+ }
+
+ /* close any opened files */
+ if (rawfd != -1){
+ rc = HDclose(rawfd);
+ if (rc != 0){
+ ERRMSG("Raw file close failed");
+ ret_code=1;
+ }
+ else
+ rawfd = -1;
+ }
+ if (mpifd != MPI_FILE_NULL){
+ MPI_File_close(&mpifd);
+ }
+ if (h5fd != -1){
+ H5Fclose(h5fd);
+ h5fd=-1;
+ }
+ /* release MPI resources */
+ if (comm != MPI_COMM_NULL){
+ MPI_Comm_free(&comm);
+ }
+ /* release generic resources */
+ if (buffer != NULL){
+ HDfree(buffer);
+ buffer = NULL;
+ }
+fprintf(stderr, "returning with ret_code=%d\n", ret_code);
+ return(ret_code);
+}
+
+#ifdef OLDSTUFF
+int
+original_main()
+{
+
+ /* parse the command line arguments */
+ parse_args(argc, argv);
+
+ if (mynod == 0) printf("# Using hdf5-io calls.\n");
+
+
+ /* kindof a weird hack- if the location of the pvfstab file was
+ * specified on the command line, then spit out this location into
+ * the appropriate environment variable: */
+
+#if H5_HAVE_SETENV
+/* no setenv or unsetenv */
+ if (opt_pvfstab_set) {
+ if((setenv("PVFSTAB_FILE", opt_pvfstab, 1)) < 0){
+ perror("setenv");
+ goto die_jar_jar_die;
+ }
+ }
+#endif
+
+ /* this is how much of the file data is covered on each iteration of
+ * the test. used to help determine the seek offset on each
+ * iteration */
+ iter_jump = nprocs * opt_block;
+
+ /* setup a buffer of data to write */
+ if (!(tmp = (char *) malloc(opt_block + 256))) {
+ perror("malloc");
+ goto die_jar_jar_die;
+ }
+ buf = tmp + 128 - (((long)tmp) % 128); /* align buffer */
+
+ if (opt_correct) {
+ /* do the same buffer setup for verifiable data */
+ if (!(tmp2 = (char *) malloc(opt_block + 256))) {
+ perror("malloc2");
+ goto die_jar_jar_die;
+ }
+ buf2 = tmp + 128 - (((long)tmp) % 128);
+ }
+
+ /* setup file access template with parallel IO access. */
+ if (opt_split_vfd){
+ hid_t mpio_pl;
+
+ mpio_pl = H5Pcreate (H5P_FILE_ACCESS);
+ VRFY((acc_tpl >= 0), "", H5FATAL);
+ ret = H5Pset_fapl_mpio(mpio_pl, MPI_COMM_WORLD, MPI_INFO_NULL);
+ VRFY((ret >= 0), "", H5FATAL);
+
+ /* set optional allocation alignment */
+ if (opt_alignment*opt_threshold != 1){
+ ret = H5Pset_alignment(acc_tpl, opt_threshold, opt_alignment );
+ VRFY((ret >= 0), "H5Pset_alignment succeeded", !H5FATAL);
+ }
+
+ /* setup file access template */
+ acc_tpl = H5Pcreate (H5P_FILE_ACCESS);
+ VRFY((acc_tpl >= 0), "", H5FATAL);
+ ret = H5Pset_fapl_split(acc_tpl, meta_ext, mpio_pl, raw_ext, mpio_pl);
+ VRFY((ret >= 0), "H5Pset_fapl_split succeeded", H5FATAL);
+ }else{
+
+ /* set optional allocation alignment */
+ if (opt_alignment*opt_threshold != 1){
+ ret = H5Pset_alignment(acc_tpl, opt_threshold, opt_alignment );
+ VRFY((ret >= 0), "H5Pset_alignment succeeded", !H5FATAL);
+ }
+ }
+
+
+
+ /* now each process writes a block of opt_block chars in round robbin
+ * fashion until the whole dataset is covered.
+ */
+ for (j=0; j < opt_iter; j++) {
+ /* setup a file dataspace selection */
+ start[0] = (j*iter_jump)+(mynod*opt_block);
+ stride[0] = block[0] = opt_block;
+ count[0]= 1;
+ ret=H5Sselect_hyperslab(file_dataspace, H5S_SELECT_SET, start, stride, count, block);
+ VRFY((ret >= 0), "H5Sset_hyperslab succeeded", H5FATAL);
+
+ if (opt_correct) /* fill in buffer for iteration */ {
+ for (i=mynod+j, check=buf; i<opt_block; i++,check++) *check=(char)i;
+ }
+
+ /* discover the starting time of the operation */
+ MPI_Barrier(MPI_COMM_WORLD);
+ stim = MPI_Wtime();
+
+ /* write data */
+ ret = H5Dwrite(dataset, H5T_NATIVE_CHAR, mem_dataspace, file_dataspace,
+ H5P_DEFAULT, buf);
+ VRFY((ret >= 0), "H5Dwrite dataset1 succeeded", !H5FATAL);
+
+ /* discover the ending time of the operation */
+ etim = MPI_Wtime();
+
+ write_tim += (etim - stim);
+
+ /* we are done with this "write" iteration */
+ }
+
+ /* close dataset and file */
+ ret=H5Dclose(dataset);
+ VRFY((ret >= 0), "H5Dclose succeeded", H5FATAL);
+ ret=H5Fclose(fid);
+ VRFY((ret >= 0), "H5Fclose succeeded", H5FATAL);
+
+
+
+ /* wait for everyone to synchronize at this point */
+ MPI_Barrier(MPI_COMM_WORLD);
+
+ /* reopen the file for reading */
+ fid=H5Fopen(opt_file,H5F_ACC_RDONLY,acc_tpl);
+ VRFY((fid >= 0), "", H5FATAL);
+
+ /* open the dataset */
+ dataset = H5Dopen(fid, "Dataset1");
+ VRFY((dataset >= 0), "H5Dopen succeeded", H5FATAL);
+
+ /* we can re-use the same mem_dataspace and file_dataspace
+ * the H5Dwrite used since the dimension size is the same.
+ */
+
+ /* we are going to repeat the read the same pattern the write used */
+ for (j=0; j < opt_iter; j++) {
+ /* setup a file dataspace selection */
+ start[0] = (j*iter_jump)+(mynod*opt_block);
+ stride[0] = block[0] = opt_block;
+ count[0]= 1;
+ ret=H5Sselect_hyperslab(file_dataspace, H5S_SELECT_SET, start, stride, count, block);
+ VRFY((ret >= 0), "H5Sset_hyperslab succeeded", H5FATAL);
+ /* seek to the appropriate spot give the current iteration and
+ * rank within the MPI processes */
+
+ /* discover the start time */
+ MPI_Barrier(MPI_COMM_WORLD);
+ stim = MPI_Wtime();
+
+ /* read data */
+ /* read in the file data */
+ if (!opt_correct){
+ ret = H5Dread(dataset, H5T_NATIVE_CHAR, mem_dataspace, file_dataspace,
+ H5P_DEFAULT, buf);
+ }
+ else{
+ ret = H5Dread(dataset, H5T_NATIVE_CHAR, mem_dataspace, file_dataspace,
+ H5P_DEFAULT, buf2);
+ }
+ myerrno = errno;
+ /* discover the end time */
+ etim = MPI_Wtime();
+ read_tim += (etim - stim);
+ VRFY((ret >= 0), "H5Dwrite dataset1 succeeded", !H5FATAL);
+
+
+ if (ret < 0) fprintf(stderr, "node %d, read error, loc = %Ld: %s\n",
+ mynod, mynod*opt_block, strerror(myerrno));
+
+ /* if the user wanted to check correctness, compare the write
+ * buffer to the read buffer */
+ if (opt_correct && memcmp(buf, buf2, opt_block)) {
+ fprintf(stderr, "node %d, correctness test failed\n", mynod);
+ my_correct = 0;
+ MPI_Allreduce(&my_correct, &correct, 1, MPI_INT, MPI_MIN,
+ MPI_COMM_WORLD);
+ }
+
+ /* we are done with this read iteration */
+ }
+
+ /* close dataset and file */
+ ret=H5Dclose(dataset);
+ VRFY((ret >= 0), "H5Dclose succeeded", H5FATAL);
+ ret=H5Fclose(fid);
+ VRFY((ret >= 0), "H5Fclose succeeded", H5FATAL);
+
+ /* compute the read and write times */
+ MPI_Allreduce(&read_tim, &max_read_tim, 1, MPI_DOUBLE, MPI_MAX,
+ MPI_COMM_WORLD);
+ MPI_Allreduce(&read_tim, &min_read_tim, 1, MPI_DOUBLE, MPI_MIN,
+ MPI_COMM_WORLD);
+ MPI_Allreduce(&read_tim, &ave_read_tim, 1, MPI_DOUBLE, MPI_SUM,
+ MPI_COMM_WORLD);
+
+ /* calculate the average from the sum */
+ ave_read_tim = ave_read_tim / nprocs;
+
+ MPI_Allreduce(&write_tim, &max_write_tim, 1, MPI_DOUBLE, MPI_MAX,
+ MPI_COMM_WORLD);
+ MPI_Allreduce(&write_tim, &min_write_tim, 1, MPI_DOUBLE, MPI_MIN,
+ MPI_COMM_WORLD);
+ MPI_Allreduce(&write_tim, &ave_write_tim, 1, MPI_DOUBLE, MPI_SUM,
+ MPI_COMM_WORLD);
+
+ /* calculate the average from the sum */
+ ave_write_tim = ave_write_tim / nprocs;
+
+ /* print out the results on one node */
+ if (mynod == 0) {
+ read_bw = ((int64_t)(opt_block*nprocs*opt_iter))/(max_read_tim*1000000.0);
+ write_bw = ((int64_t)(opt_block*nprocs*opt_iter))/(max_write_tim*1000000.0);
+
+ printf("nr_procs = %d, nr_iter = %d, blk_sz = %ld\n", nprocs,
+ opt_iter, (long)opt_block);
+
+ printf("# total_size = %ld\n", (long)(opt_block*nprocs*opt_iter));
+
+ printf("# Write: min_time = %f, max_time = %f, mean_time = %f\n",
+ min_write_tim, max_write_tim, ave_write_tim);
+ printf("# Read: min_time = %f, max_time = %f, mean_time = %f\n",
+ min_read_tim, max_read_tim, ave_read_tim);
+
+ printf("Write bandwidth = %f Mbytes/sec\n", write_bw);
+ printf("Read bandwidth = %f Mbytes/sec\n", read_bw);
+
+ if (opt_correct) {
+ printf("Correctness test %s.\n", correct ? "passed" : "failed");
+ }
+ }
+
+
+die_jar_jar_die:
+
+#if H5_HAVE_SETENV
+/* no setenv or unsetenv */
+ /* clear the environment variable if it was set earlier */
+ if (opt_pvfstab_set){
+ unsetenv("PVFSTAB_FILE");
+ }
+#endif
+
+ free(tmp);
+ if (opt_correct) free(tmp2);
+ MPI_Finalize();
+ return(0);
+}
+
+/* Wtime() - returns current time in sec., in a double */
+double Wtime()
+{
+ struct timeval t;
+
+ gettimeofday(&t, NULL);
+ return((double)t.tv_sec + (double)t.tv_usec / 1000000);
+}
+
+#endif /* OLDSTUFF */
+
+#else /* H5_HAVE_PARALLEL */
+/* dummy program since H5_HAVE_PARALLE is not configured in */
+int
+main()
+{
+printf("No parallel IO performance because parallel is not configured in\n");
+return(0);
+}
+#endif /* H5_HAVE_PARALLEL */
diff --git a/perform/pio_perf.c b/perform/pio_perf.c
new file mode 100644
index 0000000..8971428
--- /dev/null
+++ b/perform/pio_perf.c
@@ -0,0 +1,324 @@
+/*
+ * Copyright (C) 2001
+ * National Center for Supercomputing Applications
+ * All rights reserved.
+ *
+ */
+
+/*
+ * Parallel HDF5 Performance Testing Code
+ * --------------------------------------
+ *
+ * Portable code to test performance on the different platforms we support.
+ * This is what the report should look like:
+ *
+ * nprocs = Max#Procs
+ * IO Type = Raw
+ * # Files = 1, # of dsets = 1000, Elements per dset = 37000
+ * Write Results = x MB/s
+ * Read Results = x MB/s
+ * # Files = 1, # of dsets = 3000, Elements per dset = 37000
+ * Write Results = x MB/s
+ * Read Results = x MB/s
+ *
+ * . . .
+ *
+ * IO Type = MPIO
+ * # Files = 1, # of dsets = 1000, Elements per dset = 37000
+ * Write Results = x MB/s
+ * Read Results = x MB/s
+ * # Files = 1, # of dsets = 3000, Elements per dset = 37000
+ * Write Results = x MB/s
+ * Read Results = x MB/s
+ *
+ * . . .
+ *
+ * IO Type = PHDF5
+ * # Files = 1, # of dsets = 1000, Elements per dset = 37000
+ * Write Results = x MB/s
+ * Read Results = x MB/s
+ * # Files = 1, # of dsets = 3000, Elements per dset = 37000
+ * Write Results = x MB/s
+ * Read Results = x MB/s
+ *
+ * . . .
+ *
+ * nprocs = Max#Procs / 2
+ *
+ * . . .
+ *
+ */
+
+/* system header files */
+#include <stdio.h>
+#include <stdlib.h>
+
+/* library header files */
+#include <mpi.h>
+
+/* our header files */
+#include "h5tools_utils.h"
+#include "pio_perf.h"
+
+/* useful macros */
+#define TAB_SPACE 4
+
+#define ONE_GB 1073741824UL
+
+#if 0
+#define MIN_HDF5_BUF_SIZE 1024
+#define MAX_HDF5_BUF_SIZE (ONE_GB / 2)
+#else
+#define MIN_HDF5_BUF_SIZE 1024*1024*8
+#define MAX_HDF5_BUF_SIZE MIN_HDF5_BUF_SIZE*4
+#endif
+
+/* local variables */
+static const char *progname = "pio_perf";
+
+/*
+ * Command-line options: The user can specify short or long-named
+ * parameters. The long-named ones can be partially spelled. When
+ * adding more, make sure that they don't clash with each other.
+ */
+#if 1
+static const char *s_opts = "ho:";
+#else
+static const char *s_opts = "hbo:";
+#endif /* 1 */
+static struct long_options l_opts[] = {
+ { "help", no_arg, 'h' },
+ { "hel", no_arg, 'h' },
+ { "he", no_arg, 'h' },
+#if 0
+ /* a siting of the elusive binary option */
+ { "binary", no_arg, 'b' },
+ { "binar", no_arg, 'b' },
+ { "bina", no_arg, 'b' },
+ { "bin", no_arg, 'b' },
+ { "bi", no_arg, 'b' },
+#endif /* 0 */
+ { "max-size", require_arg, 'm' },
+ { "max-siz", require_arg, 'm' },
+ { "max-si", require_arg, 'm' },
+ { "max-s", require_arg, 'm' },
+ { "max", require_arg, 'm' },
+ { "ma", require_arg, 'm' },
+ { "output", require_arg, 'o' },
+ { "outpu", require_arg, 'o' },
+ { "outp", require_arg, 'o' },
+ { "out", require_arg, 'o' },
+ { "ou", require_arg, 'o' },
+ { NULL, 0, '\0' }
+};
+
+struct options {
+ const char *output_file; /* file to print report to */
+ long max_size; /* maximum size of file in gigabytes */
+};
+
+/* local functions */
+static struct options *parse_command_line(int argc, char *argv[]);
+static void run_test_loop(FILE *output, int max_num_procs, long max_size);
+static void print_indent(register FILE *output, register int indent);
+static void usage(const char *prog);
+
+/*
+ * Function: main
+ * Purpose: Start things up. Initialize MPI and then call the test looping
+ * function.
+ * Return: EXIT_SUCCESS or EXIT_FAILURE
+ * Programmer: Bill Wendling, 30. October 2001
+ * Modifications:
+ */
+int
+main(int argc, char **argv)
+{
+ int world_size, ret;
+ int exit_value = EXIT_SUCCESS;
+ FILE *output = stdout;
+ struct options *opts;
+
+ opts = parse_command_line(argc, argv);
+
+ if (opts->output_file) {
+ if ((output = fopen(opts->output_file, "w")) == NULL) {
+ fprintf(stderr, "%s: cannot open output file\n", progname);
+ perror(opts->output_file);
+ goto onions;
+ }
+ }
+
+ /* initialize MPI and get the maximum num of processors we started with */
+ MPI_Init(&argc, &argv);
+ ret = MPI_Comm_size(MPI_COMM_WORLD, &world_size);
+
+ if (ret != MPI_SUCCESS) {
+ fprintf(stderr, "%s: MPI_Comm_size call failed\n", progname);
+
+ if (ret == MPI_ERR_COMM)
+ fprintf(stderr, "invalid MPI communicator\n");
+ else
+ fprintf(stderr, "invalid argument\n");
+
+ exit_value = EXIT_FAILURE;
+ goto cheese_and;
+ }
+
+ run_test_loop(output, world_size, opts->max_size);
+
+cheese_and:
+ MPI_Finalize();
+
+onions:
+ free(opts);
+ return exit_value;
+}
+
+/*
+ * Function: run_test_loop
+ * Purpose: Run the I/O tests. Write the results to OUTPUT.
+ *
+ * - The slowest changing part of the test is the number of
+ * processors to use. For each loop iteration, we divide that
+ * number by 2 and rerun the test.
+ *
+ * - The second slowest is what type of IO to perform. We have
+ * three choices: RAW, MPI-IO, and PHDF5.
+ *
+ * - Then we change the size of the buffer. This information is
+ * inferred from the number of datasets to create and the number
+ * of integers to put into each dataset. The backend code figures
+ * this out.
+ *
+ * Return: Nothing
+ * Programmer: Bill Wendling, 30. October 2001
+ * Modifications:
+ */
+static void
+run_test_loop(FILE *output, int max_num_procs, long max_size)
+{
+ parameters parms;
+
+ /* num_files stays ``1'' for now but may change later */
+ parms.num_files = 1;
+ parms.num_iters = 1;
+
+ /* divide the maximum number of processors by 2 for each loop iter */
+ for (; max_num_procs > 0; max_num_procs /= 2) {
+ register iotype i;
+
+ parms.max_num_procs = max_num_procs;
+ fprintf(output, "Number of processors = %u\n", parms.max_num_procs);
+
+ for (i = RAW; i <= PHDF5; ++i) {
+ register unsigned long j;
+
+ parms.io_type = i;
+ print_indent(output, TAB_SPACE * 1);
+ fprintf(output, "Type of IO = ");
+
+ if (i == RAW)
+ fprintf(output, "Raw\n");
+ else if (i == MPIO)
+ fprintf(output, "MPIO\n");
+ else
+ fprintf(output, "PHDF5\n");
+
+ for (j = MIN_HDF5_BUF_SIZE; j <= MAX_HDF5_BUF_SIZE; j <<= 1) {
+ parms.num_dsets = ONE_GB / j;
+ parms.num_elmts = (max_size * j) / sizeof(int);
+
+ print_indent(output, TAB_SPACE * 2);
+ fprintf(output,
+ "# of files: %u, # of dsets: %lu, Elements per dset: %lu\n",
+ parms.num_files, parms.num_dsets, parms.num_elmts);
+
+ /* call Albert's testing here */
+ dopio(parms);
+ /* get back ``result'' object and report */
+ }
+ }
+ }
+}
+
+/*
+ * Function: print_indent
+ * Purpose: Print spaces to indent a new line of text for pretty printing
+ * things.
+ * Return: Nothing
+ * Programmer: Bill Wendling, 29. October 2001
+ * Modifications:
+ */
+static void
+print_indent(register FILE *output, register int indent)
+{
+ for (; indent > 0; --indent)
+ fputc(' ', output);
+
+ fputc('\n', output);
+}
+
+/*
+ * Function: usage
+ * Purpose: Print a usage message and then exit.
+ * Return: Nothing
+ * Programmer: Bill Wendling, 31. October 2001
+ * Modifications:
+ */
+static void
+usage(const char *prog)
+{
+ fflush(stdout);
+ fprintf(stdout, "usage: %s [OPTIONS]\n", prog);
+ fprintf(stdout, " OPTIONS\n");
+ fprintf(stdout, " -h, --help Print a usage message and exit\n");
+ fprintf(stdout, " -m #, --max-size=# Maximum size of file in gigabytes [default: 2]\n");
+ fprintf(stdout, " -o F, --output=F Output raw data into file F\n");
+ fprintf(stdout, "\n");
+ fprintf(stdout, " F - is a filename.\n");
+ fprintf(stdout, "\n");
+}
+
+/*
+ * Function: parse_command_line
+ * Purpose: Parse the command line options and return a STRUCT OPTIONS
+ * structure which will need to be freed by the calling function.
+ * Return: Nothing
+ * Programmer: Bill Wendling, 31. October 2001
+ * Modifications:
+ */
+static struct options *
+parse_command_line(int argc, char *argv[])
+{
+ int opt;
+ struct options *cl_opts;
+
+ cl_opts = (struct options *)calloc(1, sizeof(struct options));
+ cl_opts->max_size = 2;
+
+ while ((opt = get_option(argc, (const char **)argv, s_opts, l_opts)) != EOF) {
+ switch ((char)opt) {
+#if 0
+ case 'b':
+ /* the future "binary" option */
+ break;
+#endif /* 0 */
+ case 'm':
+ cl_opts->max_size = atol(opt_arg);
+ break;
+ case 'o':
+ cl_opts->output_file = opt_arg;
+ break;
+ case 'h':
+ usage(progname);
+ exit(EXIT_SUCCESS);
+ case '?':
+ default:
+ usage(progname);
+ exit(EXIT_FAILURE);
+ }
+ }
+
+ return cl_opts;
+}
diff --git a/perform/pio_perf.h b/perform/pio_perf.h
new file mode 100644
index 0000000..8f21df2
--- /dev/null
+++ b/perform/pio_perf.h
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2001
+ * National Center for Supercomputing Applications
+ * All rights reserved.
+ *
+ */
+#ifndef PIO_PERF_H__
+#define PIO_PERF_H__
+
+typedef enum iotype_ {
+ RAW,
+ MPIO,
+ PHDF5
+ /*NUM_TYPES*/
+} iotype;
+
+typedef struct parameters_ {
+ unsigned int max_num_procs; /* Maximum number of processes to use */
+ iotype io_type; /* The type of IO test to perform */
+ unsigned int num_files; /* Number of files to create */
+ unsigned long num_dsets; /* Number of datasets to create */
+ unsigned long num_elmts; /* Number of native ints in each dset */
+ unsigned int num_iters; /* Number of times to loop doing the IO */
+} parameters;
+
+#endif /* PIO_PERF_H__ */
diff --git a/perform/pio_timer.c b/perform/pio_timer.c
new file mode 100644
index 0000000..1220e38
--- /dev/null
+++ b/perform/pio_timer.c
@@ -0,0 +1,137 @@
+/*
+ * Copyright (C) 2001
+ * National Center for Supercomputing Applications
+ * All rights reserved.
+ */
+
+/*
+ * Purpose:
+ *
+ * This is a module of useful timing functions for performance testing.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <mpi.h>
+
+#if 0
+
+#include "hdf5.h"
+
+#endif /* 0 */
+
+#include "pio_timer.h"
+
+/*
+ * The number to divide the tv_usec field with to get a nice decimal to add to
+ * the number of seconds.
+ */
+#define MILLISECOND 1000000.0
+
+/*
+ * Function: perf_time_new
+ * Purpose: Build us a brand, spankin', new performance time object.
+ * The object is a black box to the user. They just tell us
+ * what type of timer they want (MPI_TIMER for MPI_Wtime or
+ * SYS_TIMER for system time).
+ * Return: Pointer to perf_time object
+ * Programmer: Bill Wendling, 01. October 2001
+ * Modifications:
+ */
+perf_time *
+perf_time_new(unsigned int type)
+{
+ perf_time *pt = (perf_time *)calloc(1, sizeof(struct perf_time_));
+
+ pt->type = type;
+ return pt;
+}
+
+/*
+ * Function: perf_time_destroy
+ * Purpose: Remove the memory allocated for the perf_time object. Only
+ * need to call on a pointer allocated with the ``perf_time_new''
+ * function.
+ * Return: Nothing
+ * Programmer: Bill Wendling, 01. October 2001
+ * Modifications:
+ */
+void
+perf_time_destroy(perf_time *pt)
+{
+ free(pt);
+}
+
+/*
+ * Function: set_timer_type
+ * Purpose: Set the type of the timer to either MPI_TIMER or SYS_TIMER.
+ * This really only needs to be called if you didn't construct a
+ * timer with the perf_timer_new function (shame!).
+ * Return: Nothing
+ * Programmer: Bill Wendling, 04. October 2001
+ * Modifications:
+ */
+void
+set_timer_type(perf_time *pt, timer_type type)
+{
+ pt->type = type;
+}
+
+/*
+ * Function: get_timer_type
+ * Purpose: Get the type of the timer.
+ * Return: MPI_TIMER or SYS_TIMER.
+ * Programmer: Bill Wendling, 04. October 2001
+ * Modifications:
+ */
+timer_type
+get_timer_type(perf_time *pt)
+{
+ return pt->type;
+}
+
+/*
+ * Function: set_time
+ * Purpose: Set the time in a ``perf_time'' object.
+ * Return: Pointer to the passed in ``perf_time'' object.
+ * Programmer: Bill Wendling, 01. October 2001
+ * Modifications:
+ */
+perf_time *
+set_time(perf_time *pt, timer_type t, int start_stop)
+{
+ if (pt) {
+ if (pt->type == MPI_TIMER) {
+ if (start_stop == START) {
+ pt->mpi_timer[t] = MPI_Wtime();
+ } else {
+ pt->total_time[t] += MPI_Wtime() - pt->mpi_timer[t];
+ }
+ } else {
+ if (start_stop == START) {
+ gettimeofday(&pt->sys_timer[t], NULL);
+ } else {
+ struct timeval sys_t;
+
+ gettimeofday(&sys_t, NULL);
+ pt->total_time[t] += (double)pt->sys_timer[t].tv_sec +
+ ((double)pt->sys_timer[t].tv_usec) / MILLISECOND;
+ }
+ }
+ }
+
+ return pt;
+}
+
+/*
+ * Function: get_time
+ * Purpose: Get the time from a ``perf_time'' object.
+ * Return: The number of seconds as a DOUBLE.
+ * Programmer: Bill Wendling, 01. October 2001
+ * Modifications:
+ */
+double
+get_time(perf_time *pt, timer_type t)
+{
+ return pt->total_time[t];
+}
diff --git a/perform/pio_timer.h b/perform/pio_timer.h
new file mode 100644
index 0000000..637b2bb
--- /dev/null
+++ b/perform/pio_timer.h
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2001
+ * National Center for Supercomputing Applications
+ * All rights reserved.
+ *
+ */
+#ifndef PERF_TIMER__
+#define PERF_TIMER__
+
+#if 0
+
+#if defined(H5_TIME_WITH_SYS_TIME)
+# include <sys/time.h>
+# include <time.h>
+#elif defined(H5_HAVE_SYS_TIME_H)
+# include <sys/time.h>
+#else
+# include <time.h>
+#endif
+
+#else
+
+#include <sys/time.h>
+#include <time.h>
+
+#endif /* 0 */
+
+/* The different types of timers we can have */
+typedef enum timer_type_ {
+ HDF5_MPI_OVERHEAD,
+ HDF5_FILE_OPENCLOSE,
+ HDF5_GROUP_CREATE,
+ HDF5_DATASET_CREATE,
+ HDF5_WRITE_FIXED_DIMS,
+ HDF5_READ_FIXED_DIMS,
+ NUM_TIMERS
+} timer_type;
+
+/* Miscellaneous identifiers */
+enum {
+ MPI_TIMER = 0, /* Use MPI timer to measure time */
+ SYS_TIMER = 1, /* Use system clock to measure time */
+
+ START, /* Start a specified timer */
+ STOP /* Stop a specified timer */
+};
+
+/* The performance time structure */
+typedef struct perf_time_ {
+ unsigned int type : 1;
+ double total_time[NUM_TIMERS];
+ double mpi_timer[NUM_TIMERS];
+ struct timeval sys_timer[NUM_TIMERS];
+} perf_time;
+
+/* External function declarations */
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+extern perf_time *perf_time_new(unsigned int);
+extern void perf_time_destroy(perf_time *pt);
+extern void set_timer_type(perf_time *pt, timer_type type);
+extern timer_type get_timer_type(perf_time *pt);
+extern perf_time *set_time(perf_time *pt, timer_type t, int start_stop);
+extern double get_time(perf_time *pt, timer_type t);
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* PERF_TIMER__ */