INSTALL.parallel


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This file contains instructions for the installation a version of HDF5 
that uses the parallel file I/O facilities of the MPI-IO library. A
parallel version of HDF5 can run in a serial environment as long as
the appropriate MPI-IO and MPI header files and libraries are
available.

The parallel version of hdf5 can be build by generally following the
instructions in the INSTALL file for building a serial version and
using `mpicc' as the C compiler.  This can be done by setting the CC
environment variable before invoking configure as with:

    $ CC=mpicc ./configure

If the mpicc compiler is not available then a parallel library can
still be built as long as the appropriate header files and libraries
can be found.  If these files are part of the default compiler search
paths then configuration is as simple as:

    $ ./configure --enable-parallel

Otherwise, if the MPI and MPI-IO header files or library cannot be
found then the compiler search paths can be corrected, the files can
be moved, or configure can be told about the file locations.  The
latter is done with something like:

    $ CPPFLAGS=-I/usr/local/mpi/include \
      LDFLAGS=-L/usr/local/mpi/lib/LINUX/ch_p4 \
      ./configure --enable-parallel