3 files changed, 36 insertions, 3 deletions

diff --git a/tools/test/perform/sio_engine.c b/tools/test/perform/sio_engine.c
index abf1fa6..2a5efb6 100644
--- a/tools/test/perform/sio_engine.c
+++ b/tools/test/perform/sio_engine.c
@@ -1064,6 +1064,7 @@ done:
 do_fopen(parameters *param, char *fname, file_descr *fd /*out*/, int flags)
 {
     int ret_code = SUCCESS;
+    hid_t fcpl;
 
     switch (param->io_type) {
     case POSIXIO:
@@ -1088,9 +1089,17 @@ do_fopen(parameters *param, char *fname, file_descr *fd /*out*/, int flags)
             GOTOERROR(FAIL);
         }
 
+        fcpl = H5Pcreate(H5P_FILE_CREATE);
+        if(param->page_size) {
+            H5Pset_file_space_strategy(fcpl, H5F_FSPACE_STRATEGY_PAGE, 0, (hsize_t)1);
+            H5Pset_file_space_page_size(fcpl, param->page_size);
+            if(param->page_buffer_size)
+                H5Pset_page_buffer_size(fapl, param->page_buffer_size, 0, 0);
+        }
+
         /* create the parallel file */
         if (flags & (SIO_CREATE | SIO_WRITE)) {
-            fd->h5fd = H5Fcreate(fname, H5F_ACC_TRUNC, H5P_DEFAULT, fapl);
+            fd->h5fd = H5Fcreate(fname, H5F_ACC_TRUNC, fcpl, fapl);
         } else {
             fd->h5fd = H5Fopen(fname, H5F_ACC_RDONLY, fapl);
         }
diff --git a/tools/test/perform/sio_perf.c b/tools/test/perform/sio_perf.c
index 5bae832..2201b99 100644
--- a/tools/test/perform/sio_perf.c
+++ b/tools/test/perform/sio_perf.c
@@ -100,7 +100,7 @@ static const char  *progname = "h5perf_serial";
  * It seems that only the options that accept additional information
  * such as dataset size (-e) require the colon next to it.
  */
-static const char *s_opts = "a:A:B:c:Cd:D:e:F:ghi:Imno:p:P:r:stT:v:wx:X:";
+static const char *s_opts = "a:A:B:b:c:Cd:D:e:F:G:ghi:Imno:p:P:r:stT:v:wx:X:";
 static struct long_options l_opts[] = {
     { "align", require_arg, 'a' },
     { "alig", require_arg, 'a' },
@@ -292,7 +292,8 @@ struct options {
     int h5_extendable;        	/* Perform the write tests only         */
     int verify;        		/* Verify data correctness              */
     vfdtype     vfd;            /* File driver */
-
+    size_t page_buffer_size;
+    size_t page_size;
 };
 
 typedef struct _minmax {
@@ -401,6 +402,8 @@ run_test_loop(struct options *opts)
     parms.h5_write_only = opts->h5_write_only;
     parms.verify = opts->verify;
     parms.vfd = opts->vfd;
+    parms.page_buffer_size = opts->page_buffer_size;
+    parms.page_size = opts->page_size;
 
     /* load multidimensional options */
     parms.num_bytes = 1;
@@ -865,6 +868,16 @@ report_parameters(struct options *opts)
         recover_size_and_print((long long)opts->buf_size[i], " ");
     HDfprintf(output, "\n");
 
+    if(opts->page_size) {
+        HDfprintf(output, "Page Aggregation Enabled. Page size = %ld\n", opts->page_size);
+        if(opts->page_buffer_size)
+            HDfprintf(output, "Page Buffering Enabled. Page Buffer size = %ld\n", opts->page_buffer_size);
+        else
+            HDfprintf(output, "Page Buffering Disabled\n");
+    }
+    else
+        HDfprintf(output, "Page Aggregation Disabled\n");
+
     HDfprintf(output, "Dimension access order=");
     for (i=0; i<rank; i++)
         recover_size_and_print((long long)opts->order[i], " ");
@@ -941,6 +954,9 @@ parse_command_line(int argc, char *argv[])
 
     cl_opts = (struct options *)HDmalloc(sizeof(struct options));
 
+    cl_opts->page_buffer_size = 0;
+    cl_opts->page_size = 0;
+
     cl_opts->output_file = NULL;
     cl_opts->io_types =  0;    /* will set default after parsing options */
     cl_opts->num_iters = 1;
@@ -975,6 +991,12 @@ parse_command_line(int argc, char *argv[])
         case 'a':
             cl_opts->h5_alignment = parse_size_directive(opt_arg);
             break;
+        case 'G':
+            cl_opts->page_size = parse_size_directive(opt_arg);
+            break;
+        case 'b':
+            cl_opts->page_buffer_size = parse_size_directive(opt_arg);
+            break;
         case 'A':
             {
                 const char *end = opt_arg;
diff --git a/tools/test/perform/sio_perf.h b/tools/test/perform/sio_perf.h
index 7a7d708..5d9358d 100644
--- a/tools/test/perform/sio_perf.h
+++ b/tools/test/perform/sio_perf.h
@@ -67,6 +67,8 @@ typedef struct parameters_ {
     int         h5_extendable; /* Make HDF5 dataset chunked            */
     int         h5_write_only; /* Perform the write tests only         */
     int         verify;       /* Verify data correctness              */
+    size_t      page_size;
+    size_t      page_buffer_size;
 } parameters;
 
 typedef struct results_ {