[Ocfs2-test-devel] [PATCH 05/11] ocfs2-test: Changed configure.in to built ocfs2-test RPM.

[Joel Becker]

On Tue, Nov 04, 2008 at 09:58:28AM +0800, tristan.ye wrote:
> On Mon, 2008-11-03 at 15:33 -0800, Joel Becker wrote:
> > On Mon, Nov 03, 2008 at 05:53:37PM -0500, Marcos E. Matsunaga wrote:
> > > hmm.. This is really interesting.
> > > 
> > > I just re-installed openmpi on my OEL5 home machine and it does install on
> > > 
> > > /usr/lib/openmpi/1.2.5-gcc/bin/mpicc and it doesn't link to /usr/bin.
> > 
> > 	What does /usr/bin/mpicc have?  LAM?  Anything?  Is there an
> > /etc/alternatives/mpicc?
> 
> Joel,
> 
> The mpicc you've seen under /usr/bin should be a part of lammpi, which
> lead to a confusion since lammpi and openmpi use the same name of their
> generic binaries(such as mpirun,mpicc,mpiexec), it maybe the reason why
> openmpi RPM package installed their binaries into such a strange
> directory(try to avoid affecting the existing mpi product?),and I'm sure
> a /etc/alternatives/mpicc also do not belong to the openmpi package,you
> can check with rpm -ql openmpi-devel
> 
> Any way,it will be great helpful to do a cleanup for any other mpi
> products before you jump to openmpi.

	I don't have any other mpi products installed.  Certainly not
lammpi.  /etc/alternatives is not owned by any package precisely because
it is managed in %post scripts.  To wit:

--------------------------------------------------------------------
[root at ca-test39 ~]# rpm -q --scripts openmpi-devel
postinstall scriptlet (using /bin/sh):
alternatives --install  /usr/bin/mpicc mpicc \
			/usr/bin/opal_wrapper-32 11 \
	--slave /usr/bin/mpic++ mpic++ /usr/bin/opal_wrapper-32 \
	--slave /usr/bin/mpiCC mpiCC /usr/bin/opal_wrapper-32 \
	--slave /usr/bin/mpicxx mpicxx /usr/bin/opal_wrapper-32 \
	--slave /usr/bin/mpif77 mpif77 /usr/bin/opal_wrapper-32 \
	--slave /usr/bin/mpif90 mpif90 /usr/bin/opal_wrapper-32
preuninstall scriptlet (using /bin/sh):
if [ "$1" -eq 0 ]; then
    alternatives --remove mpicc /usr/bin/opal_wrapper-32
fi
postuninstall program: /sbin/ldconfig
--------------------------------------------------------------------

	That's openmpi-devel using the 'alternatives' program to update
the /usr/bin/mpicc symlink.  It manages these symlinks via
/etc/alternatives.  For more info:

--------------------------------------------------------------------
[root at ca-test39 ~]# rpm -q openmpi-devel
openmpi-devel-1.1.1-5.el5
[root at ca-test39 ~]# rpm -qf $(which alternatives)
chkconfig-1.3.30.1-1
[root at ca-test39 ~]# cat /etc/redhat-release 
Red Hat Enterprise Linux Server release 5 (Tikanga)
--------------------------------------------------------------------

	So, can you tell me what version of openmpi-devel you have?
What version of OEL?  Basically the same info as above.

Joel

-- 

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Joel Becker
Principal Software Developer
Oracle
E-mail: joel.becker at oracle.com
Phone: (650) 506-8127