Mpiexec release 0.71, bug fixes and pure shmem support

[Pete Wyckoff]

Changes in this version from 0.70 fall into device-specific and
into architecture-specific categories:

Device mpich-p4:

    Added support for an MPI installation which was compiled *without*
    --with-comm=shared.  Some people seem to prefer to avoid the
    shared-memory support in MPICH which is optionally provided by the
    P4 device.  In this case, reconfigure and recompile mpiexec with the
    flag "--disable-p4-shmem".  Note that this is not a command line
    option since mpiexec must be compatible with the MPI library in this
    case.  You can't select which version to use at runtime.

    No need to upgrade unless you want the new feature.

Device mpich-gm:

    Fixed an important bug with support for "new" mpich-gm.  Don't
    forget that mpiexec releases 0.70 and 0.71 work only with mpich-gm
    >= 1.2.4..8.  Any earlier mpich-gm should not go beyond mpiexec-0.69
    which works fine and does not have this particular bug.

    Please upgrade soon.

Device shmem:

    This is a completely new device.  The SHMEM device is only used on
    single-node configurations, like for large SMPs.  There is no
    support for ethernet or any other out-of-box communication.  The use
    of shared memory as well as mpich-p4 or mpich-gm are not controlled
    by this device.  If you have just one big Sun or HP SMP machine, for
    example, or some other single node multi-processor box you will want
    to use the SHMEM device.

    Brand new.  Use if you want in place of vendor-supplied SMP MPI
    code launching mechanisms.

Architecture Sun (solaris):

    Fixed some compile issues with this architecture, for both gcc and
    native cc compilers.  Only gcc version tested (since PBS was
    compiled locally with gcc here).


More info and downloads at:  http://www.osc.edu/~pw/mpiexec/
Please respond to the list with bug reports, comments, suggestions,
and rants.

		-- Pete