| Commit message (Collapse) | Author | Age | Files | Lines |
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When data is read or written out, some layers did an immediate
return(SUCCEED) if number of elements to be accessed is zero.
This caused problems when collective access is used. In a
collective call, all processes in a communicator must call
the lowest layer of MPIO routines even if some of them happen
to access no date.
Solutions:
Eliminated all those pre-mature return if #element==0;
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used to open an HDF5 file with MPIO access. The design has changed
to provide access-mode controll (independent or collective access)
as an argument in the H5D read/write calls.
Also removed the macros H5FACC_INDEPENDENT and H5FACC_COLLECTIVE.
The original thinking was to define how a file is independent or
collective access. They are replaced by the enum H5D_transfer_t
with values of H5D_XFER_INDEPENDENT and H5D_XFER_COLLECTIVE.
These values are used in the H5Pset_xfer to setup a data transfer
property list to be used during the H5D read/write calls.
The original access_mode field in the File access structure is
still there. It would be removed soon once the transfer control
can be passed down to the low level I/O routines.
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write and read based on the value of the access_parms.
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the access_template, instead of COMM_WORLD and INFO_NULL as
before.
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----------------------
./configure.in
./src/H5Fprivate.h
./src/H5Fsec2.c
We now detect and use lseek64() on systems that have it (e.g.,
Irix64) and are able to generate >2GB files on Irix XFS file
systems (and anything else that supports large files). This
change also removed some warning messages from the Irix `-64'
compiler.
> $ ls -l istore.h5
> -rw-r--r-- 1 matzke meshtv 8605436856 Feb 17 14:03 istore.h5
./configure.in
./src/H5Fprivate.h
./src/H5Fstdio.h
We now detect and use fseek64() on systems that have it (e.g.,
Irix64) and are able to generate >2GB files on Irix XFS file
systems (and anything else that supports large files). This
change also removed some warning messages from the Iris `-64'
compiler.
./src/H5E.c
./src/H5Epublic.h
Added the H5E_OVERFLOW error to signal file address overflow.
./src/H5Fpublic.h
./examples/h5_chunk_read.c
./examples/h5_compound.c
./examples/h5_extend_write.c
./examples/h5_group.c
./examples/h5_read.c
./examples/h5_write.c
./html/Datasets.html
./html/Files.html
./html/H5.api.html
./html/H5.intro.html
./html/H5.sample_code.html
./html/ph5example.c
./html/review1.html
./test/cmpd_dset.c
./test/dsets.c
./test/extend.c
./test/tfile.c
./test/th5p.c
./test/theap.c
./test/tohdr.c
./test/tstab.c
./testpar/phdf5.c
Renamed file access constants to follow the naming scheme.
Also changed the base names a little to be more accurate as to
what they do. The old names H5ACC_WRITE and H5ACC_OVERWRITE
will temporarily work.
H5ACC_DEFAULT --> H5F_ACC_RDONLY for H5Fopen()
H5ACC_DEFAULT --> H5F_ACC_EXCL for H5Fcreate()
H5ACC_WRITE --> H5F_ACC_RDWR
H5ACC_OVERWRITE --> H5F_ACC_TRUNC
Albert or Kim: The H5ACC_INDEPENDENT and H5ACC_COLLECTIVE
macros in H5Fpublic.h should be an enum typedef and have names
more like H5F_MPIO_INDEPENDENT and H5F_MPIO_COLLECTIVE. Also
change the access_mode argument of H5Cset_mpio().
H5Fcreate() and H5Fopen() are more strict now about which
flags are acceptable for the operation.
./src/H5Fprivate.h
./src/H5F.c
./src/H5C.c
Changed the file access template to make it more general. A
union contains a struct for each type of low-level driver and
the default template is initialized at run-time.
./src/H5Fpublic.h
./src/H5F.c
Added H5Fget_access_template() and cleaned up
H5Fget_create_template().
./src/H5C.c
The H5Cset_mpi() no longer trashes the file access template
when an error is detected. We check for errors and *then*
update the file access template.
Added H5C_close() so Albert and Kim have a place to release
the MPI communicator and info from the file access property
list.
Kim or Albert: I notice in H5Cset_mpi() you copy the MPI
communicator. Do you need to do something similar in
H5C_copy()?
./src/H5F.c
Added more error checking for the file creation and access
property lists because it used to be possible to make the
library dump core by swapping the creation and access property
list ID numbers of H5Fcreate().
./test/istore.c
./test/tfile.c
./test/th5p.c
./test/theap.c
./test/tohdr.c
./test/tstab.c
./testpar/testphdf5.c
One must pass H5C_DEFAULT as the file creation or access
property list in order to get the default property list. It
is no longer possible to pass zero or any other arbitrary bad
object ID.
./src/H5Fcore.c
./src/H5Ffamly.c
./src/H5Flow.c
./src/H5Fmpio.c
./src/H5Fsec2.c
./src/H5Fsplit.c
./src/H5Fstdio.c
./src/H5MF.c
The file access property list is passed to all H5F_low_...()
functions and to the drivers.
./src/H5Fcore.c
The block size can be set at run time on a per-file basis
instead of at compile time across all files. The "5000 items in
a group test" now takes 1.6 seconds.
./src/H5private.h
Removed inclusion of mpi.h and mpio.h since they're included
from H5public.h.
./src/H5Cpublic.h
./src/H5C.c
Added H5Cset_stdio(), H5Cset_sec2(), H5Cset_core(),
H5Cset_split(), and H5Cset_family() in addition to the
H5Cset_mpio() that Kim and Albert already wrote. We still
need the H5Cget_driver() and an H5Cget...() counterpart for
each of those functions. The split and family drivers still
need a little work but I'm checking this in anyway.
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In H5Fprivate.h made MPI-IO the default low-level I/O module when HAVE_PARALLEL.
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MPIO lower interface layer (H5Fmpio.c) has been commited by Kim already.
All PHDF5 codes are "bracket'ed" by #ifdef HAVE_PARALLEL macro.
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call
MPI_File_set_size (a collective operation).
Also changed/added some error messages.
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and removed MPI_Init and MPI_Finalize from H5.c
(these should be done in the user program).
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