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| author | Robb Matzke <matzke@llnl.gov> | 1998-01-31 03:47:38 (GMT) |
|---|---|---|
| committer | Robb Matzke <matzke@llnl.gov> | 1998-01-31 03:47:38 (GMT) |
| commit | 8831ff175c42845c6c523fbbbf035ec1f00a779c (patch) | |
| tree | 64d781d44b777492bbb3383fe90e8d48d9c7825e /test | |
| parent | 374e5ae39b6f05469c1bcbdcaf0a473f1dde1385 (diff) | |
| download | hdf5-8831ff175c42845c6c523fbbbf035ec1f00a779c.zip hdf5-8831ff175c42845c6c523fbbbf035ec1f00a779c.tar.gz hdf5-8831ff175c42845c6c523fbbbf035ec1f00a779c.tar.bz2 | |
[svn-r210] Changes since 19980130
----------------------
./MANIFEST
./html/study.html [NEW]
./html/study_1000x1000.gif [NEW]
./html/study_250x250.gif [NEW]
./html/study_499x499.gif [NEW]
./html/study_5000x1000.gif [NEW]
./html/study_500x500.gif [NEW]
./html/study_p1.gif [NEW]
./html/study_p1.obj [NEW]
The conclusions from a study of the HDF5 chunking
layout. Shows overhead and disk seeking.
Diffstat (limited to 'test')
| -rw-r--r-- | test/extend.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/test/extend.c b/test/extend.c index 8cadd6a..b5f2ecc 100644 --- a/test/extend.c +++ b/test/extend.c @@ -39,6 +39,7 @@ main (void) static int buf1[NY][NX], buf2[NX/2][NY/2]; static const size_t dims[2] = {NX, NY}; static const size_t half_dims[2] = {NX/2, NY/2}; + static const size_t chunk_dims[2] = {NX/2, NY/2}; static size_t maxdims[2] = {H5P_UNLIMITED, H5P_UNLIMITED}; static size_t size[2]; int offset[2]; @@ -59,7 +60,7 @@ main (void) /* Create the dataset which is originally NX by NY */ cparms = H5Ccreate (H5C_DATASET_CREATE); assert (cparms>=0); - status = H5Cset_chunk (cparms, 2, dims); + status = H5Cset_chunk (cparms, 2, chunk_dims); assert (status>=0); dataset = H5Dcreate (file, "dataset", H5T_NATIVE_INT, mem_space, cparms); assert (dataset>=0); @@ -94,13 +95,13 @@ main (void) /* Read the data */ mem_space = H5Pcreate_simple (2, half_dims, NULL); + file_space = H5Dget_space (dataset); for (i=0; i<10; i++) { for (j=0; j<10; j++) { /* Select a hyperslab */ offset[0] = i * NX/2; offset[1] = j * NY/2; - file_space = H5Dget_space (dataset); assert (file_space>=0); status = H5Pset_hyperslab (file_space, offset, half_dims, NULL); assert (status>=0); @@ -109,7 +110,6 @@ main (void) status = H5Dread (dataset, H5T_NATIVE_INT, mem_space, file_space, H5C_DEFAULT, buf2); assert (status>=0); - H5Pclose (file_space); /* Compare */ for (k=0; k<NX/2; k++) { |