Hi, Mohammed,
This is the kind of issue you would have with any dynamically linked
pure MPI executable. If the cluster nodes share a filesystem (or if
X10 is installed in the same place on every node), you may be able to
export LD_LIBRARY_PATH appropriately when you launch.
Otherwise, please refer to the MPI manual or some general MPI mailing
lists for help. You should be able to create a non-X10 test case for
the issue. Others on this list may also have some suggestions that I
have not thought of.
Igor
mohammed elsaeedy <mohammed.elsae...@kaust.edu.sa> wrote on 07/21/2010
11:11:02 AM:
> Dear Igor,
>
>
> Thank you very much for the clarifications, but now I'm trying to run
> over a cluster, if I send the executable file that I just compiled to
the
> cluster,
> and I try to run it with mpirun/mpiexec, it complains about not finding
the
> file libx10.so, which ofcourse is a library file for X10 that I have
> locally.
>
> I'm sorry but I'm a newbie in this, do you have any suggestions?
>
> Thank you,
> Regards,
> Mohammed El Sayed
>
> On Wed, Jul 21, 2010 at 10:43 AM, Igor Peshansky <ig...@us.ibm.com>
wrote:
>
> > Hi, Mohammed,
> >
> > The answer to your first question depends on the platform, but for
most
> > platforms the default is "pgas_sockets". You can launch the resulting
> > executables either with the manager/launcher combination, or with
> > mpirun/mpiexec from some versions of MPI (MPICH2 should work, but I
> > think there were some issues with the more recent versions -- 1.3 --
of
> > OpenMPI).
> >
> > The "standalone" transport is designed to work within a single node
only.
> > You simply launch the (single) executable (e.g., "./a.out"), and it
forks
> > off one copy for each place. The number of places is controlled by
the
> > X10RT_STANDALONE_NUMPLACES environment variable, and defaults to 1.
> > Places communicate using shared memory. There is no need to use an
> > external launcher for these executables, but you also cannot run them
> > across a cluster.
> >
> > Finally, if you build with the "mpi" transport, what you get is a
normal
> > MPI executable, which you launch with the appropriate mpirun/mpiexec
> > (just make sure it's from the same version of MPI that you built
with).
> > Using "-x10rt mpi" will pick up mpicxx from the PATH, so make sure the
> > one you want to use is first in the PATH (verify using "which
mpicxx").
> >
> > Hope this helps,
> > Igor
> >
> > mohammed elsaeedy <mohammed.elsae...@kaust.edu.sa> wrote on 07/21/2010
> > 10:10:07 AM:
> >
> > > Dear list,
> > >
> > >
> > > The issue for the 3rd question, was solved by following tuto:
> > Augmenting a
> > > pre-built X10 Release with the MPI version of
> > > X10RT<http://x10.codehaus.org/X10RT+Implementations>
> > > but then my first two question are still unresolved for me.
> > > another thing is that after I compiler with MPI, and I want to run
it
> > over a
> > > cluster, how can I do that please?
> > >
> > > Thank you all
> > > Mohammed @ KAUST
> > >
> > > On Wed, Jul 21, 2010 at 9:08 AM, mohammed elsaeedy <
> > > mohammed.elsae...@kaust.edu.sa> wrote:
> > >
> > > > Dear list,
> > > >
> > > >
> > > > I have developed several applications that work very well
locally
> > (one
> > > > place or several places), and I want to deploy them over a
cluster, so
> > I
> > > > have several questions
> > > > regarding that:
> > > >
> > > > 1) When I compile with "x10c++ -o Hello Hello.x10" which x10rt
> > > > implementation is used? is it the sockets or the standalone? and
whats
> > the
> > > > difference between both?
> > > >
> > > > 2) When I compile with "x10c++ -x10rt standalone -o Hello
Hello.x10"
> > > > and when I get to run with (launcher -t n) it executes, but
always
> > as
> > > > only one place as it gives me the following message:
> > > > "X10RT_STANDALONE_NUMPLACES not set. Assuming 1 place" . How can
i
> > set it?
> > > >
> > > > 3) When I compile with "x10c++ -x10rt MPI -o Hello Hello.x10",
at
> > first
> > > > it asked for the file named "x10rt_MPI.properties" which was not
there
> > at
> > > > first, so I created one and
> > > > filled it with the following:
> > > >
> > > > CXX=mpicxx
> > > > CXXFLAGS=
> > > > LDFLAGS=
> > > > LDLIBS=-lx10rt_mpi
> > > >
> > > > when I compile now, it tells me that it cant find "-lx10rt_mpi"
> > > >
> > > > I have OpenMPI installed over my Ubuntu, and I want to try my
> > > program over MPI, I'm using X10 2.0.4
> > > >
> > > > Is there anywhere where we can understand these x10rt property
file
> > > compiler flags or commands?
--
Igor Peshansky (note the spelling change!)
IBM T.J. Watson Research Center
X10: Parallel Productivity and Performance (http://x10-lang.org/)
XJ: No More Pain for XML's Gain (http://www.research.ibm.com/xj/)
"I hear and I forget. I see and I remember. I do and I understand" --
Confucius
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