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Bug fix (feature, kind of) Description: The library used to hang if a collective dataset read/write request does not have the same number of eventual MPIO request. Part of the reason is that H5FD_read/H5FD_write immediately returns succeess if it sees the request size is 0. This caused problem since other processes with I/O to do would be hanging by waiting for the early returned process(es). Solution: H5FD.c: disable the early return code in parallel mode. Make it go on even with "nothing" to transfer. H5D.c: the optimized MPIO xfer routines can handle collect calls correctly when the condition is right (e.g., no conversion). When the COLLECTIVE request cannot be handled correctly without the risk of hanging, the COLLECTIVE is changed to INDEPENDENT calls for the eventual MPIO calls. Platforms tested: IRIX64 parallel (-64, n32), IRIX64 -64 sequential, Linux sequential. |
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bin | ||
c++ | ||
config | ||
doc | ||
examples | ||
fortran | ||
pablo | ||
src | ||
test | ||
testpar | ||
tools | ||
acconfig.h | ||
aclocal.m4 | ||
all.zip | ||
configure | ||
configure.in | ||
COPYING | ||
HISTORY | ||
INSTALL | ||
INSTALL_parallel | ||
INSTALL_TFLOPS | ||
INSTALL_VFL | ||
INSTALL_Windows.txt | ||
Makefile.dist | ||
Makefile.in | ||
MANIFEST | ||
README | ||
RELEASE |
This is hdf5-1.3.33 currently under development Please refer to the INSTALL file for installation instructions. ------------------------------------------------------------------------------ This release is almost fully functional for the entire API defined in the documentation, see the RELEASE file in this directory for information specific to this release of the library. The INSTALL file contains instructions on compiling and installing the library. The INSTALL_parallel file contains instructions on installing the parallel version of the library. Documentation for this release is in the html directory. Start with the "index.html" in that dictectory. Four mailing lists are currently set up for use with the HDF5 library. hdf5 - For general discussion of the HDF5 library with other users. hdf5dev - For discussion of the HDF5 library development with developers and other interested parties. hdf5announce - For announcements of HDF5 related developments, not a discussion list. hdf5cvs - For checkin notices of code development on the library, not a discussion list. To subscribe to a list, send mail to "majordomo@ncsa.uiuc.edu", with "subscribe <list>" in the _body_, not the Subject, of the message. E.g., subscribe hdf5 Messages to be sent to the list should be sent to "<list>@ncsa.uiuc.edu". Nearly daily code snapshots are now being provided at the following URL: ftp://hdf.ncsa.uiuc.edu/pub/outgoing/hdf5/snapshots Please read the readme file in that directory before working with a library snapshot. The HDF5 website is located at http://hdf.ncsa.uiuc.edu/HDF5/ Bugs should be reported to hdfhelp@ncsa.uiuc.edu.