Hello Bert,

What OS are you running on your notebook?

If you are running Linux, and you have root access to your system,  then
you should be able to resolve the Open SHMEM support issue by installing
the XPMEM device driver on your system, and rebuilding UCX so it picks
up XPMEM support.

The source code is on GitHub:

https://github.com/hjelmn/xpmem

Some instructions on how to build the xpmem device driver are at

https://github.com/hjelmn/xpmem/wiki/Installing-XPMEM

You will need to install the kernel source and symbols rpms on your
system before building the xpmem device driver.

Hope this helps,

Howard


Am Di., 13. Nov. 2018 um 15:00 Uhr schrieb Bert Wesarg via users <
users@lists.open-mpi.org>:

> Hi,
>
> On Mon, Nov 12, 2018 at 10:49 PM Pritchard Jr., Howard via announce
> <annou...@lists.open-mpi.org> wrote:
> >
> > The Open MPI Team, representing a consortium of research, academic, and
> > industry partners, is pleased to announce the release of Open MPI version
> > 4.0.0.
> >
> > v4.0.0 is the start of a new release series for Open MPI.  Starting with
> > this release, the OpenIB BTL supports only iWarp and RoCE by default.
> > Starting with this release,  UCX is the preferred transport protocol
> > for Infiniband interconnects. The embedded PMIx runtime has been updated
> > to 3.0.2.  The embedded Romio has been updated to 3.2.1.  This
> > release is ABI compatible with the 3.x release streams. There have been
> numerous
> > other bug fixes and performance improvements.
> >
> > Note that starting with Open MPI v4.0.0, prototypes for several
> > MPI-1 symbols that were deleted in the MPI-3.0 specification
> > (which was published in 2012) are no longer available by default in
> > mpi.h. See the README for further details.
> >
> > Version 4.0.0 can be downloaded from the main Open MPI web site:
> >
> >   https://www.open-mpi.org/software/ompi/v4.0/
> >
> >
> > 4.0.0 -- September, 2018
> > ------------------------
> >
> > - OSHMEM updated to the OpenSHMEM 1.4 API.
> > - Do not build OpenSHMEM layer when there are no SPMLs available.
> >   Currently, this means the OpenSHMEM layer will only build if
> >   a MXM or UCX library is found.
>
> so what is the most convenience way to get SHMEM working on a single
> shared memory node (aka. notebook)? I just realized that I don't have
> a SHMEM since Open MPI 3.0. But building with UCX does not help
> either. I tried with UCX 1.4 but Open MPI SHMEM
> still does not work:
>
> $ oshcc -o shmem_hello_world-4.0.0 openmpi-4.0.0/examples/hello_oshmem_c.c
> $ oshrun -np 2 ./shmem_hello_world-4.0.0
> [1542109710.217344] [tudtug:27715:0]         select.c:406  UCX  ERROR
> no remote registered memory access transport to tudtug:27716:
> self/self - Destination is unreachable, tcp/enp0s31f6 - no put short,
> tcp/wlp61s0 - no put short, mm/sysv - Destination is unreachable,
> mm/posix - Destination is unreachable, cma/cma - no put short
> [1542109710.217344] [tudtug:27716:0]         select.c:406  UCX  ERROR
> no remote registered memory access transport to tudtug:27715:
> self/self - Destination is unreachable, tcp/enp0s31f6 - no put short,
> tcp/wlp61s0 - no put short, mm/sysv - Destination is unreachable,
> mm/posix - Destination is unreachable, cma/cma - no put short
> [tudtug:27715] ../../../../../oshmem/mca/spml/ucx/spml_ucx.c:266
> Error: ucp_ep_create(proc=1/2) failed: Destination is unreachable
> [tudtug:27715] ../../../../../oshmem/mca/spml/ucx/spml_ucx.c:305
> Error: add procs FAILED rc=-2
> [tudtug:27716] ../../../../../oshmem/mca/spml/ucx/spml_ucx.c:266
> Error: ucp_ep_create(proc=1/2) failed: Destination is unreachable
> [tudtug:27716] ../../../../../oshmem/mca/spml/ucx/spml_ucx.c:305
> Error: add procs FAILED rc=-2
> --------------------------------------------------------------------------
> It looks like SHMEM_INIT failed for some reason; your parallel process is
> likely to abort.  There are many reasons that a parallel process can
> fail during SHMEM_INIT; some of which are due to configuration or
> environment
> problems.  This failure appears to be an internal failure; here's some
> additional information (which may only be relevant to an Open SHMEM
> developer):
>
>   SPML add procs failed
>   --> Returned "Out of resource" (-2) instead of "Success" (0)
> --------------------------------------------------------------------------
> [tudtug:27715] Error: pshmem_init.c:80 - _shmem_init() SHMEM failed to
> initialize - aborting
> [tudtug:27716] Error: pshmem_init.c:80 - _shmem_init() SHMEM failed to
> initialize - aborting
> --------------------------------------------------------------------------
> SHMEM_ABORT was invoked on rank 0 (pid 27715, host=tudtug) with errorcode
> -1.
> --------------------------------------------------------------------------
> --------------------------------------------------------------------------
> A SHMEM process is aborting at a time when it cannot guarantee that all
> of its peer processes in the job will be killed properly.  You should
> double check that everything has shut down cleanly.
>
> Local host: tudtug
> PID:        27715
> --------------------------------------------------------------------------
> --------------------------------------------------------------------------
> Primary job  terminated normally, but 1 process returned
> a non-zero exit code. Per user-direction, the job has been aborted.
> --------------------------------------------------------------------------
> --------------------------------------------------------------------------
> oshrun detected that one or more processes exited with non-zero
> status, thus causing
> the job to be terminated. The first process to do so was:
>
>   Process name: [[2212,1],1]
>   Exit code:    255
> --------------------------------------------------------------------------
> [tudtug:27710] 1 more process has sent help message
> help-shmem-runtime.txt / shmem_init:startup:internal-failure
> [tudtug:27710] Set MCA parameter "orte_base_help_aggregate" to 0 to
> see all help / error messages
> [tudtug:27710] 1 more process has sent help message help-shmem-api.txt
> / shmem-abort
> [tudtug:27710] 1 more process has sent help message
> help-shmem-runtime.txt / oshmem shmem abort:cannot guarantee all
> killed
>
> MPI works as expected:
>
> $ mpicc -o mpi_hello_world-4.0.0 openmpi-4.0.0/examples/hello_c.c
> $ mpirun -np 2 ./mpi_hello_world-4.0.0
> Hello, world, I am 0 of 2, (Open MPI v4.0.0, package: Open MPI
> wesarg@tudtug Distribution, ident: 4.0.0, repo rev: v4.0.0, Nov 12,
> 2018, 108)
> Hello, world, I am 1 of 2, (Open MPI v4.0.0, package: Open MPI
> wesarg@tudtug Distribution, ident: 4.0.0, repo rev: v4.0.0, Nov 12,
> 2018, 108)
>
> I'm attaching the output from 'ompi_info -a' and also from 'ucx_info
> -b -d -c -s'.
>
> Thanks for the help.
>
> Best,
> Bert
>
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