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[svn-r5660] Purpose:

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Code optimization

Description:
    Avoid creating MPI types (and thus requiring a MPI_File_set_view() call)
    when contiguous selections are used for dataset I/O.  This should be a
    performance improvement for those sorts of selections.

Platforms tested:
    Linux 2.2.x (eirene) w/parallel && IRIX64 6.5 (modi4) w/parallel & FORTRAN
This commit is contained in:
Quincey Koziol
2002-06-18 09:02:17 -05:00
parent ad9ca47cec
commit 972707dcd3
4 changed files with 242 additions and 130 deletions
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3
src/H5FDmpio.h
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@@ -57,7 +57,8 @@ __DLL__ herr_t H5Pget_fapl_mpio(hid_t fapl_id, MPI_Comm *comm/*out*/,
__DLL__ herr_t H5Pset_dxpl_mpio(hid_t dxpl_id, H5FD_mpio_xfer_t xfer_mode);
__DLL__ herr_t H5Pget_dxpl_mpio(hid_t dxpl_id, H5FD_mpio_xfer_t *xfer_mode/*out*/);
__DLL__ MPI_Comm H5FD_mpio_communicator(H5FD_t *_file);
__DLL__ herr_t H5FD_mpio_setup(hid_t dxpl_id, MPI_Datatype btype, MPI_Datatype ftype);
__DLL__ herr_t H5FD_mpio_setup(hid_t dxpl_id, MPI_Datatype btype,
MPI_Datatype ftype, unsigned use_view);
__DLL__ herr_t H5FD_mpio_teardown(hid_t dxpl_id);
__DLL__ herr_t H5FD_mpio_wait_for_left_neighbor(H5FD_t *file);
__DLL__ herr_t H5FD_mpio_signal_right_neighbor(H5FD_t *file);