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| author | Robert Kim Yates <rkyates@llnl.gov> | 1998-08-26 17:51:19 (GMT) |
|---|---|---|
| committer | Robert Kim Yates <rkyates@llnl.gov> | 1998-08-26 17:51:19 (GMT) |
| commit | 9124be67f68ec427f66cd0fe9a8c624d787560fc (patch) | |
| tree | 2f2070b96266006a8785fff20fd4c695323f5c29 /src/H5Smpio.c | |
| parent | 8fc352b7cd35ff3456860431e18a4a2f53aefb31 (diff) | |
| download | hdf5-9124be67f68ec427f66cd0fe9a8c624d787560fc.zip hdf5-9124be67f68ec427f66cd0fe9a8c624d787560fc.tar.gz hdf5-9124be67f68ec427f66cd0fe9a8c624d787560fc.tar.bz2 | |
[svn-r617] Added optimization to coalesce outer dims of hyperslab,
and changed error return of H5S_mpio_spaces_xfer to simple FAIL
in case file layout is not contiguous (so that the xfer will still be
done, but in the old chunk-by-chunk method).
Diffstat (limited to 'src/H5Smpio.c')
| -rw-r--r-- | src/H5Smpio.c | 26 |
1 files changed, 17 insertions, 9 deletions
diff --git a/src/H5Smpio.c b/src/H5Smpio.c index 122e322..dd58f27 100644 --- a/src/H5Smpio.c +++ b/src/H5Smpio.c @@ -25,7 +25,7 @@ * them. */ /* const hbool_t H5S_mpio_avail = FALSE; */ -#else /* HAVE_PARALLEL */ +#else /* HAVE_PARALLEL */ /* Interface initialization */ #define PABLO_MASK H5S_all_mask #define INTERFACE_INIT NULL @@ -197,11 +197,13 @@ H5S_mpio_hyper_type( const H5S_t *space, const hsize_t elmt_size, /* d[rank-i-1].start stays unchanged */ /* d[rank-i-1].count stays unchanged */ } - /* check for possibility to coalesce blocks of the innermost dimension */ - if (d[new_rank-1].strid == d[new_rank-1].block) { - /* transform the smaller blocks to 1 larger block of combined size */ - d[new_rank-1].block *= d[new_rank-1].count; - d[new_rank-1].count = 1; + /* check for possibility to coalesce blocks of the uncoalesced dimensions */ + for (i=0; i<new_rank; ++i) { + if (d[i].strid == d[i].block) { + /* transform smaller blocks to 1 larger block of combined size */ + d[i].block *= d[i].count; + d[i].count = 1; + } } /* initialize induction variables */ @@ -412,6 +414,7 @@ H5S_mpio_spaces_xfer (H5F_t *f, const struct H5O_layout_t *layout, const H5D_transfer_t xfer_mode, void *buf /*out*/, const hbool_t do_write ) { + herr_t ret_value = SUCCEED; int err; haddr_t disp, addr; size_t mpi_count; @@ -433,7 +436,11 @@ H5S_mpio_spaces_xfer (H5F_t *f, const struct H5O_layout_t *layout, /* INCOMPLETE!!! rky 980816 */ /* Currently can only handle H5D_CONTIGUOUS layout */ if (layout->type != H5D_CONTIGUOUS) { - HRETURN_ERROR(H5E_DATASPACE, H5E_UNSUPPORTED, FAIL,"can only handle contiguous layout"); +#ifdef H5S_DEBUG + fprintf (stderr, "H5S: can only create MPI datatype for hyperslab selection when layout is contiguous.\n" ); +#endif + ret_value = FAIL; + goto done; } /* create the MPI buffer type */ @@ -503,7 +510,8 @@ H5S_mpio_spaces_xfer (H5F_t *f, const struct H5O_layout_t *layout, } } - FUNC_LEAVE (SUCCEED); + done: + FUNC_LEAVE (ret_value); } /* H5S_mpio_spaces_xfer() */ /*------------------------------------------------------------------------- @@ -568,4 +576,4 @@ H5S_mpio_spaces_write(H5F_t *f, const struct H5O_layout_t *layout, FUNC_LEAVE (ret_value); } /* H5S_mpio_spaces_write() */ -#endif /* HAVE_PARALLEL */ +#endif /* HAVE_PARALLEL */ |