Add 1 MB write/read examples. Not tested.

1 files changed, 111 insertions, 0 deletions

diff --git a/examples/h5dsm_dset_r1m.c b/examples/h5dsm_dset_r1m.c
new file mode 100644
index 0000000..b6da505
--- /dev/null
+++ b/examples/h5dsm_dset_r1m.c
@@ -0,0 +1,111 @@
+#include "h5dsm_example.h"
+#include <time.h>
+
+int main(int argc, char *argv[]) {
+    uuid_t pool_uuid;
+    char *pool_grp = "daos_tier0";
+    hid_t file = -1, dset = -1, trans = -1, fapl = -1;
+    hid_t nfile = -1, ndset = -1;
+    hsize_t dims[1] = {256 * 1024};
+    int *buf = NULL, nbuf = NULL;
+    int i;
+
+    (void)MPI_Init(&argc, &argv);
+    (void)daos_init();
+
+    /* Seed random number generator */
+    srand(time(NULL));
+
+    if(argc != 4)
+        PRINTF_ERROR("argc != 4\n");
+
+    /* Parse UUID */
+    if(0 != uuid_parse(argv[1], pool_uuid))
+        ERROR;
+
+    /* Set up FAPL */
+    if((fapl = H5Pcreate(H5P_FILE_ACCESS)) < 0)
+        ERROR;
+    if(H5Pset_fapl_daosm(fapl, MPI_COMM_WORLD, MPI_INFO_NULL, pool_uuid, pool_grp) < 0)
+        ERROR;
+
+    /* Open file */
+    if((file = H5Fopen_ff(argv[2], H5F_ACC_RDWR, fapl, &trans)) < 0)
+        ERROR;
+
+    /* Create native file */
+    if((file = H5Fopen(argv[2], H5F_ACC_RDWR, H5P_DEFAULT)) < 0)
+        ERROR;
+
+    /* Create dataset */
+    if((dset = H5Dopen_ff(file, argv[3], H5P_DEFAULT, trans)) < 0)
+        ERROR;
+
+    /* Open native dataset */
+    if((ndset = H5Dopen2(nfile, argv[3], H5P_DEFAULT)) < 0)
+        ERROR;
+
+    /* Allocate buffers */
+    if(NULL == (buf = (int *)malloc(dims[0] * sizeof(int))))
+        ERROR;
+    if(NULL == (nbuf = (int *)malloc(dims[0] * sizeof(int))))
+        ERROR;
+
+    /* Read data */
+    printf("Reading daos-m dataset\n");
+    if(H5Dread_ff(dset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, buf, trans) < 0)
+        ERROR;
+    
+    /* Write native data */
+    printf("Reading native dataset\n");
+    if(H5Dread(ndset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, buf) < 0)
+        ERROR;
+
+    /* Compare data */
+    if(memcmp(buf, nbuf, dims[0] * sizeof(int)))
+        PRINTF_ERROR("Buffers differ\n");
+    else
+        printf("Buffers are equal\n");
+
+    /* Close */
+    if(H5Dclose_ff(dset, -1) < 0)
+        ERROR;
+    if(H5Dclose(ndset) < 0)
+        ERROR;
+    if(H5TRclose(trans) < 0)
+        ERROR;
+    if(H5Fclose_ff(file, -1) < 0)
+        ERROR;
+    if(H5Fclose(nfile) < 0)
+        ERROR;
+    if(H5Pclose(fapl) < 0)
+        ERROR;
+    free(buf);
+    buf = NULL;
+    free(nbuf);
+    nbuf = NULL;
+
+    printf("Success\n");
+
+    (void)daos_fini();
+    (void)MPI_Finalize();
+    return 0;
+
+error:
+    H5E_BEGIN_TRY {
+        H5Dclose_ff(dset, -1);
+        H5Dclose(ndset);
+        H5TRclose(trans);
+        H5Fclose_ff(file, -1);
+        H5Fclose(nfile);
+        H5Pclose(fapl);
+    } H5E_END_TRY;
+
+    free(buf);
+    free(nbuf);
+
+    (void)daos_fini();
+    (void)MPI_Finalize();
+    return 1;
+}
+