Hi Andreas, I am guessing that you are using "--cpu-freq" option of srun. One way to go is manually setting the SLRUM_CPU_FREQ_REQ environment variable. Srun suppose to pick that up. Yanfei Guo Postdoctoral Appointee MCS Division, ANL On 12/1/15, 11:22 AM, "Andreas Gocht" <[email protected]> wrote:

Hey

yeah mpiexec is working quite well. I'd just liked to use slurm, as our implantation allows to set the cpu frequency on a node. Is there a way to pass flags to srun using mpiexec?

Thanks four your help.

Kind Regards

Andreas

Am 01.12.2015 um 17:41 schrieb Balaji, Pavan:

...

Looks like SLURM is telling MPICH that two processes are on the same node, even though they are on different nodes. It looks like a bug in the SLURM PMI implementation. Did you try simply using mpiexec instead? You'll need to remove the --with-pmi, --with-pm, and LDFLAGS/LIBS options and rebuild mpich for that. Note that mpiexec will internally use srun on slurm environments.

-- Pavan

...

On Dec 1, 2015, at 5:56 AM, Andreas Gocht <[email protected]> wrote:

Hey

I tried to build an use mpich with slurm, sbatch and srun. Unfortunate it looks like MPI_Init doesn't work with srun.

I got the following error:

Fatal error in MPI_Init: Other MPI error, error stack: MPIR_Init_thread(474).................: MPID_Init(190)........................: channel initialization failed MPIDI_CH3_Init(89)....................: MPID_nem_init(272)....................: MPIDI_CH3I_Seg_commit(366)............: MPIU_SHMW_Hnd_deserialize(324)........: MPIU_SHMW_Seg_open(865)...............: MPIU_SHMW_Seg_create_attach_templ(637): open failed - No such file or directory In: PMI_Abort(4239887, Fatal error in MPI_Init: Other MPI error, error stack: MPIR_Init_thread(474).................: MPID_Init(190)........................: channel initialization failed MPIDI_CH3_Init(89)....................: MPID_nem_init(272)....................: MPIDI_CH3I_Seg_commit(366)............: MPIU_SHMW_Hnd_deserialize(324)........: MPIU_SHMW_Seg_open(865)...............: MPIU_SHMW_Seg_create_attach_templ(637): open failed - No such file or directory)

I configured MPICH with "./configure --prefix=<some/prefix> --with-pmi=slurm --with-pm=none --with-slurm=<path/to/slurm>" and compiled my application with the "-L<path_to_slurm_lib> -lpmi" command.

(as described in

https://wiki.mpich.org/mpich/index.php/Frequently_Asked_Questions#Note_that_....

and

https://computing.llnl.gov/linux/slurm/mpi_guide.html#mpich2

)

I am running with 10 nodes and one task per node. Is there something I am missing during the configuration of MPICH?

Best,

Andreas

-- M.Sc. Andreas Gocht

Technische Universität Dresden Center for Information Services and High Performance Computing (ZIH) D-01062 Dresden Germany

Contact: Willersbau, Room A 104 Phone: (+49) 351 463-36415 Fax: (+49) 351 463-3773 e-mail: [email protected]

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---

discuss mailing list [email protected] To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss

-- M.Sc. Andreas Gocht

Technische Universität Dresden Center for Information Services and High Performance Computing (ZIH) D-01062 Dresden Germany

Contact: Willersbau, Room A 104 Phone: (+49) 351 463-36415 Fax: (+49) 351 463-3773 e-mail: [email protected]

_______________________________________________ discuss mailing list [email protected] To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss