Thanks, Ralph,
I just tried it with
srun --mpi=pmix_v2 ./test_mpi
and got these messages
srun: Step created for job 89
[cav02.arc-ts.umich.edu:92286] PMIX ERROR: OUT-OF-RESOURCE in file
client/pmix_client.c at line 234
[cav02.arc-ts.umich.edu:92286] OPAL ERROR: Error in file
pmix2x_client.c at line 109
[cav02.arc-ts.umich.edu:92287] PMIX ERROR: OUT-OF-RESOURCE in file
client/pmix_client.c at line 234
[cav02.arc-ts.umich.edu:92287] OPAL ERROR: Error in file
pmix2x_client.c at line 109
--------------------------------------------------------------------------
The application appears to have been direct launched using "srun",
but OMPI was not built with SLURM's PMI support and therefore cannot
execute. There are several options for building PMI support under
SLURM, depending upon the SLURM version you are using:
version 16.05 or later: you can use SLURM's PMIx support. This
requires that you configure and build SLURM --with-pmix.
Versions earlier than 16.05: you must use either SLURM's PMI-1 or
PMI-2 support. SLURM builds PMI-1 by default, or you can manually
install PMI-2. You must then build Open MPI using --with-pmi pointing
to the SLURM PMI library location.
Please configure as appropriate and try again.
--------------------------------------------------------------------------
Just to be complete, I checked the library path,
$ ldconfig -p | egrep 'slurm|pmix'
libpmi2.so.1 (libc6,AArch64) => /opt/pmix/2.0.2/lib/libpmi2.so.1
libpmi2.so (libc6,AArch64) => /opt/pmix/2.0.2/lib/libpmi2.so
libpmix.so.2 (libc6,AArch64) => /opt/pmix/2.0.2/lib/libpmix.so.2
libpmix.so (libc6,AArch64) => /opt/pmix/2.0.2/lib/libpmix.so
libpmi.so.1 (libc6,AArch64) => /opt/pmix/2.0.2/lib/libpmi.so.1
libpmi.so (libc6,AArch64) => /opt/pmix/2.0.2/lib/libpmi.so
and libpmi* does appear there.
I also tried explicitly listing the slurm directory from the slurm
library installation in LD_LIBRARY_PATH, just in case it wasn't
traversing correctly. that is, both
$ echo $LD_LIBRARY_PATH
/sw/arcts/centos7/gcc_7_1_0/openmpi/3.1.0/lib:/opt/arm/gcc-7.1.0_Generic-AArch64_RHEL-7_aarch64-linux/lib64:/opt/arm/gcc-7.1.0_Generic-AArch64_RHEL-7_aarch64-linux/lib:/opt/slurm/lib64:/sw/arcts/centos7/hpc-utils/lib
and
$ echo $LD_LIBRARY_PATH
/opt/slurm/lib64/slurm:/opt/pmix/2.0.2/lib:/sw/arcts/centos7/gcc_7_1_0/openmpi/3.1.0/lib:/opt/arm/gcc-7.1.0_Generic-AArch64_RHEL-7_aarch64-linux/lib64:/opt/arm/gcc-7.1.0_Generic-AArch64_RHEL-7_aarch64-linux/lib:/opt/slurm/lib64:/sw/arcts/centos7/hpc-utils/lib
I don't have a saved build log, but I can rebuild this and save the
build logs, in case any information in those logs would help.
I will also mention that we have, in the past, used the
--disable-dlopen and --enable-shared flags, which we did not use here.
Just in case that makes any difference.
-- bennet
On Thu, Jun 7, 2018 at 10:01 AM, r...@open-mpi.org <r...@open-mpi.org> wrote:
> I think you need to set your MPIDefault to pmix_v2 since you are using a PMIx
> v2 library
>
>
>> On Jun 7, 2018, at 6:25 AM, Bennet Fauber <ben...@umich.edu> wrote:
>>
>> Hi, Ralph,
>>
>> Thanks for the reply, and sorry for the missing information. I hope
>> this fills in the picture better.
>>
>> $ srun --version
>> slurm 17.11.7
>>
>> $ srun --mpi=list
>> srun: MPI types are...
>> srun: pmix_v2
>> srun: openmpi
>> srun: none
>> srun: pmi2
>> srun: pmix
>>
>> We have pmix configured as the default in /opt/slurm/etc/slurm.conf
>>
>> MpiDefault=pmix
>>
>> and on the x86_64 system configured the same way, a bare 'srun
>> ./test_mpi' is sufficient and runs.
>>
>> I have tried all of the following srun variations with no joy
>>
>>
>> srun ./test_mpi
>> srun --mpi=pmix ./test_mpi
>> srun --mpi=pmi2 ./test_mpi
>> srun --mpi=openmpi ./test_mpi
>>
>>
>> I believe we are using the spec files that come with both pmix and
>> with slurm, and the following to build the .rpm files used at
>> installation
>>
>>
>> $ rpmbuild --define '_prefix /opt/pmix/2.0.2' \
>> -ba pmix-2.0.2.spec
>>
>> $ rpmbuild --define '_prefix /opt/slurm' \
>> --define '_with-pmix --with-pmix=/opt/pmix/2.0.2' \
>> -ta slurm-17.11.7.tar.bz2
>>
>>
>> I did use the '--with-pmix=/opt/pmix/2.0.2' option when building OpenMPI.
>>
>>
>> In case it helps, we have these libraries on the aarch64 in
>> /opt/slurm/lib64/slurm/mpi*
>>
>> -rwxr-xr-x 1 root root 257288 May 30 15:27 /opt/slurm/lib64/slurm/mpi_none.so
>> -rwxr-xr-x 1 root root 257240 May 30 15:27
>> /opt/slurm/lib64/slurm/mpi_openmpi.so
>> -rwxr-xr-x 1 root root 668808 May 30 15:27 /opt/slurm/lib64/slurm/mpi_pmi2.so
>> lrwxrwxrwx 1 root root 16 Jun 1 08:38
>> /opt/slurm/lib64/slurm/mpi_pmix.so -> ./mpi_pmix_v2.so
>> -rwxr-xr-x 1 root root 841312 May 30 15:27
>> /opt/slurm/lib64/slurm/mpi_pmix_v2.so
>>
>> and on the x86_64, where it runs, we have a comparable list,
>>
>> -rwxr-xr-x 1 root root 193192 May 30 15:20 /opt/slurm/lib64/slurm/mpi_none.so
>> -rwxr-xr-x 1 root root 193192 May 30 15:20
>> /opt/slurm/lib64/slurm/mpi_openmpi.so
>> -rwxr-xr-x 1 root root 622848 May 30 15:20 /opt/slurm/lib64/slurm/mpi_pmi2.so
>> lrwxrwxrwx 1 root root 16 Jun 1 08:32
>> /opt/slurm/lib64/slurm/mpi_pmix.so -> ./mpi_pmix_v2.so
>> -rwxr-xr-x 1 root root 828232 May 30 15:20
>> /opt/slurm/lib64/slurm/mpi_pmix_v2.so
>>
>>
>> Let me know if anything else would be helpful.
>>
>> Thanks, -- bennet
>>
>> On Thu, Jun 7, 2018 at 8:56 AM, r...@open-mpi.org <r...@open-mpi.org> wrote:
>>> You didn’t show your srun direct launch cmd line or what version of Slurm
>>> is being used (and how it was configured), so I can only provide some
>>> advice. If you want to use PMIx, then you have to do two things:
>>>
>>> 1. Slurm must be configured to use PMIx - depending on the version, that
>>> might be there by default in the rpm
>>>
>>> 2. you have to tell srun to use the pmix plugin (IIRC you add --mpi pmix to
>>> the cmd line - you should check that)
>>>
>>> If your intent was to use Slurm’s PMI-1 or PMI-2, then you need to
>>> configure OMPI --with-pmi=<path-to-those-libraries>
>>>
>>> Ralph
>>>
>>>
>>>> On Jun 7, 2018, at 5:21 AM, Bennet Fauber <ben...@umich.edu> wrote:
>>>>
>>>> We are trying out MPI on an aarch64 cluster.
>>>>
>>>> Our system administrators installed SLURM and PMIx 2.0.2 from .rpm.
>>>>
>>>> I compiled OpenMPI using the ARM distributed gcc/7.1.0 using the
>>>> configure flags shown in this snippet from the top of config.log
>>>>
>>>> It was created by Open MPI configure 3.1.0, which was
>>>> generated by GNU Autoconf 2.69. Invocation command line was
>>>>
>>>> $ ./configure --prefix=/sw/arcts/centos7/gcc_7_1_0/openmpi/3.1.0
>>>> --mandir=/sw/arcts/centos7/gcc_7_1_0/openmpi/3.1.0/share/man
>>>> --with-pmix=/opt/pmix/2.0.2 --with-libevent=external
>>>> --with-hwloc=external --with-slurm CC=gcc CXX=g++ FC=gfortran
>>>>
>>>> ## --------- ##
>>>> ## Platform. ##
>>>> ## --------- ##
>>>>
>>>> hostname = cavium-hpc.arc-ts.umich.edu
>>>> uname -m = aarch64
>>>> uname -r = 4.11.0-45.4.1.el7a.aarch64
>>>> uname -s = Linux
>>>> uname -v = #1 SMP Fri Feb 2 17:11:57 UTC 2018
>>>>
>>>> /usr/bin/uname -p = aarch64
>>>>
>>>>
>>>> It checks for pmi and reports it found,
>>>>
>>>>
>>>> configure:12680: checking if user requested external PMIx
>>>> support(/opt/pmix/2.0.2)
>>>> configure:12690: result: yes
>>>> configure:12701: checking --with-external-pmix value
>>>> configure:12725: result: sanity check ok (/opt/pmix/2.0.2/include)
>>>> configure:12768: checking libpmix.* in /opt/pmix/2.0.2/lib64
>>>> configure:12774: checking libpmix.* in /opt/pmix/2.0.2/lib
>>>> configure:12794: checking PMIx version
>>>> configure:12804: result: version file found
>>>>
>>>>
>>>> It fails on the test for PMIx 3, which is expected, but then reports
>>>>
>>>>
>>>> configure:12843: checking version 2x
>>>> configure:12861: gcc -E -I/opt/pmix/2.0.2/include conftest.c
>>>> configure:12861: $? = 0
>>>> configure:12862: result: found
>>>>
>>>>
>>>> I have a small, test MPI program that I run, and it runs when run with
>>>> mpirun using mpirun. The processes running on the first node of a two
>>>> node job are
>>>>
>>>>
>>>> [bennet@cav02 ~]$ ps -ef | grep bennet | egrep 'test_mpi|srun'
>>>>
>>>> bennet 20340 20282 0 08:04 ? 00:00:00 mpirun ./test_mpi
>>>>
>>>> bennet 20346 20340 0 08:04 ? 00:00:00 srun
>>>> --ntasks-per-node=1 --kill-on-bad-exit --cpu_bind=none --nodes=1
>>>> --nodelist=cav03 --ntasks=1 orted -mca ess "slurm" -mca ess_base_jobid
>>>> "3609657344" -mca ess_base_vpid "1" -mca ess_base_num_procs "2" -mca
>>>> orte_node_regex "cav[2:2-3]@0(2)" -mca orte_hnp_uri
>>>> "3609657344.0;tcp://10.242.15.36:58681"
>>>>
>>>> bennet 20347 20346 0 08:04 ? 00:00:00 srun
>>>> --ntasks-per-node=1 --kill-on-bad-exit --cpu_bind=none --nodes=1
>>>> --nodelist=cav03 --ntasks=1 orted -mca ess "slurm" -mca ess_base_jobid
>>>> "3609657344" -mca ess_base_vpid "1" -mca ess_base_num_procs "2" -mca
>>>> orte_node_regex "cav[2:2-3]@0(2)" -mca orte_hnp_uri
>>>> "3609657344.0;tcp://10.242.15.36:58681"
>>>>
>>>> bennet 20352 20340 98 08:04 ? 00:01:50 ./test_mpi
>>>>
>>>> bennet 20353 20340 98 08:04 ? 00:01:50 ./test_mpi
>>>>
>>>>
>>>> However, when I run it using srun directly, I get the following output:
>>>>
>>>>
>>>> srun: Step created for job 87
>>>> [cav02.arc-ts.umich.edu:19828] OPAL ERROR: Not initialized in file
>>>> pmix2x_client.c at line 109
>>>> --------------------------------------------------------------------------
>>>> The application appears to have been direct launched using "srun",
>>>> but OMPI was not built with SLURM's PMI support and therefore cannot
>>>> execute. There are several options for building PMI support under
>>>> SLURM, depending upon the SLURM version you are using:
>>>>
>>>> version 16.05 or later: you can use SLURM's PMIx support. This
>>>> requires that you configure and build SLURM --with-pmix.
>>>>
>>>> Versions earlier than 16.05: you must use either SLURM's PMI-1 or
>>>> PMI-2 support. SLURM builds PMI-1 by default, or you can manually
>>>> install PMI-2. You must then build Open MPI using --with-pmi pointing
>>>> to the SLURM PMI library location.
>>>>
>>>> Please configure as appropriate and try again.
>>>> --------------------------------------------------------------------------
>>>> *** An error occurred in MPI_Init
>>>> *** on a NULL communicator
>>>> *** MPI_ERRORS_ARE_FATAL (processes in this communicator will now abort,
>>>> *** and potentially your MPI job)
>>>> [cav02.arc-ts.umich.edu:19828] Local abort before MPI_INIT completed
>>>> completed successfully, but am not able to aggregate error messages,
>>>> and not able to guarantee that all other processes were killed!
>>>>
>>>>
>>>> Using the same scheme to set this up on x86_64 worked, and I am taking
>>>> installation parameters, test files, and job parameters from the
>>>> working x86_64 installation.
>>>>
>>>> Other than the architecture, the main difference between the two
>>>> clusters is that the aarch64 has only ethernet networking, whereas
>>>> there is infiniband on the x86_64 cluster. I removed the --with-verbs
>>>> from the configure line, though, and I thought that would be
>>>> sufficient.
>>>>
>>>> Anyone have suggestions what might be wrong, how to fix it, or for
>>>> further diagnostics?
>>>>
>>>> Thank you, -- bennet
>>>> _______________________________________________
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>>>
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