865a463b1f
Parallel File open has a racing condition if file already exists.
Some processes see file exists, then truncate it (some system
by remove and create). Some processes does not see the file
exist, then attempt to just create it. Inconsistency.
Solution:
Instead of opening the file with COMM_SELF (which results in
racing condition in routine that calls it), open it with the
communicator in access_parms. (This assumes this access call
must be called collectively.)
Platform tested:
O2K.
This is the hdf5-1.0.0a prototype release of the HDF5 library. 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. Three 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. To subscribe to a list, send mail to "<list>-request@ncsa.uiuc.edu", (e.g., hdf5-request@ncsa.uiuc.ed) with "subscribe <your e-mail address> in the _body_ of the message. Messages to be sent to the list should be sent to "<list>@ncsa.uiuc.edu". Bugs should be reported to: Robb Matzke <matzke@llnl.gov> All types of bugs Quincey Koziol <koziol@ncsa.uiuc.edu> All types of bugs Albert Cheng <acheng@ncsa.uiuc.edu> Parallel bugs Kim Yates <rkyates@llnl.gov> Parallel bugs Paul Harten <pharten@ncsa.uiuc.edu> Bugs specific to ASCI Red or to the hdf5dev mailing list.