[Mvapich-discuss] mvapich 3.0b srun start failure

[Shineman, Nat]

Hi Cristof,

Thanks for reporting this. It looks like what is happening is srun is unable to get your process mapping from the slurm daemon and is doing a fallback method. We've overridden that fallback to support other launchers with PMI1 support and it looks like we did not provide the correct safeties to ensure it still worked with slrum. I should be able to provide you with a patch shortly. In the meantime, yes you can try building with hydra and/or mpirun_rsh by removing the slurm arguments. Both of those launchers have some degree of integration with slurm.

Thanks,
Nat
________________________________
From: Mvapich-discuss <mvapich-discuss-bounces at lists.osu.edu> on behalf of christof.koehler--- via Mvapich-discuss <mvapich-discuss at lists.osu.edu>
Sent: Thursday, May 18, 2023 07:47
To: mvapich-discuss at lists.osu.edu <mvapich-discuss at lists.osu.edu>
Subject: [Mvapich-discuss] mvapich 3.0b srun start failure

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Hello everybody,

I now started to test the mvapich 3.0b build. It was compiled on Rocky
Linux 9.1 with slurm 23.02.2 and gcc 11.3.1. See at the end of email for
mpichversion output.

When I try to start a simple mpi hello world with srun --mpi=pmi2
I see an error messages concerning PMI and a segfault, see also at the
end of the email. The same mpi hello world source code using the same
srun --mpi=pmi2 invocation (but obviously different binaries) works fine
with mvapich2 2.3.7, mpich 4.1.1 and openmpi 4.1.5.

Should I try another launcher, e.g. hydra by not setting --with-pm and
--with-pmi ? Would the hydra launcher be able to communicate wth slurm,
though ?

Best Regards

Christof

$ mpichversion
MVAPICH Version:        3.0b
MVAPICH Release date:   04/10/2023
MVAPICH Device:         ch4:ofi
MVAPICH configure:      --with-pm=slurm --with-pmi=pmi1
--with-device=ch4:ofi --prefix=/cluster/mpi/mvapich2/3.0a/gcc11.3.1
MVAPICH CC:     gcc    -DNDEBUG -DNVALGRIND -O2
MVAPICH CXX:    g++   -DNDEBUG -DNVALGRIND -O2
MVAPICH F77:    gfortran -fallow-argument-mismatch  -O2
MVAPICH FC:     gfortran   -O2
MVAPICH Custom Information:     @MVAPICH_CUSTOM_STRING@

Error Message:

INTERNAL ERROR: invalid error code 6163 (Ring ids do not match) in
MPIR_NODEMAP_build_nodemap_fallback:355
Abort(2141455) on node 0 (rank 0 in comm 0): Fatal error in PMPI_Init:
Other MPI error, error stack:
MPIR_Init_thread(175)...................:
MPID_Init(509)..........................:
MPIR_pmi_init(119)......................:
build_nodemap(882)......................:
MPIR_NODEMAP_build_nodemap_fallback(355):
In: PMI_Abort(2141455, Fatal error in PMPI_Init: Other MPI error, error
stack:
MPIR_Init_thread(175)...................:
MPID_Init(509)..........................:
MPIR_pmi_init(119)......................:
build_nodemap(882)......................:
MPIR_NODEMAP_build_nodemap_fallback(355): )
INTERNAL ERROR: invalid error code 6106 (Ring ids do not match) in
MPIR_NODEMAP_build_nodemap_fallback:355
Abort(2141455) on node 0 (rank 0 in comm 0): Fatal error in PMPI_Init:
Other MPI error, error stack:
MPIR_Init_thread(175)...................:
MPID_Init(509)..........................:
MPIR_pmi_init(119)......................:
build_nodemap(882)......................:
MPIR_NODEMAP_build_nodemap_fallback(355):
In: PMI_Abort(2141455, Fatal error in PMPI_Init: Other MPI error, error
stack:
MPIR_Init_thread(175)...................:
MPID_Init(509)..........................:
MPIR_pmi_init(119)......................:
build_nodemap(882)......................:
MPIR_NODEMAP_build_nodemap_fallback(355): )
srun: error: gpu001: tasks 0-9: Segmentation fault (core dumped)




--
Dr. rer. nat. Christof Köhler       email: c.koehler at uni-bremen.de
Universitaet Bremen/FB1/BCCMS       phone:  +49-(0)421-218-62334
Am Fallturm 1/ TAB/ Raum 3.06       fax: +49-(0)421-218-62770
28359 Bremen
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