Re: [OMPI users] Unable to mpirun from within torque

Oswin Krause Wed, 07 Sep 2016 06:33:13 -0700

Hi,

Sorry, I forgot:

The node allocation seems to be correct as the nodes are NUMA. The nodeallocation in torque is

a00551.science.domain-0
a00551.science.domain-1
a00553.science.domain-0

On 2016-09-07 14:41, Gilles Gouaillardet wrote:

Hi,

Which version of Open MPI are you running ?

I noted that though you are asking three nodes and one task per node,
you have been allocated 2 nodes only.
I do not know if this is related to this issue.

Note if you use the machinefile, a00551 has two slots (since it
appears twice in the machinefile) but a00553 has 20 slots (since it
appears once in the machinefile, the number of slots is automatically
detected)

Can you run
mpirun --mca plm_base_verbose 10 ...
So we can confirm tm is used.

Before invoking mpirun, you might want to cleanup the ompi directory in/tmp


Cheers,

Gilles

Oswin Krause <oswin.kra...@ruhr-uni-bochum.de> wrote:

Hi,

I am currently trying to set up OpenMPI in torque. OpenMPI is buildwith

tm support. Torque is correctly assigning nodes and I can run
mpi-programs on single nodes just fine. the problem starts when
processes are split between nodes.

For example, I create an interactive session with torque and start a
program by

qsub -I -n -l nodes=3:ppn=1
mpirun --tag-output -display-map hostname

which leads to
[a00551.science.domain:15932] [[65415,0],1] bind() failed on error
Address already in use (98)
[a00551.science.domain:15932] [[65415,0],1] ORTE_ERROR_LOG: Error in
file oob_usock_component.c at line 228
 Data for JOB [65415,1] offset 0

 ========================   JOB MAP   ========================

 Data for node: a00551  Num slots: 2    Max slots: 0    Num procs: 2
        Process OMPI jobid: [65415,1] App: 0 Process rank: 0 Bound: socket
0[core 0[hwt 0-1]], socket 0[core 1[hwt 0-1]], socket 0[core 2[hwt
0-1]], socket 0[core 3[hwt 0-1]], socket 0[core 4[hwt 0-1]], socket
0[core 5[hwt 0-1]], socket 0[core 6[hwt 0-1]], socket 0[core 7[hwt
0-1]], socket 0[core 8[hwt 0-1]], socket 0[core 9[hwt
0-1]]:[BB/BB/BB/BB/BB/BB/BB/BB/BB/BB][../../../../../../../../../..]
        Process OMPI jobid: [65415,1] App: 0 Process rank: 1 Bound: socket
1[core 10[hwt 0-1]], socket 1[core 11[hwt 0-1]], socket 1[core 12[hwt
0-1]], socket 1[core 13[hwt 0-1]], socket 1[core 14[hwt 0-1]], socket
1[core 15[hwt 0-1]], socket 1[core 16[hwt 0-1]], socket 1[core 17[hwt
0-1]], socket 1[core 18[hwt 0-1]], socket 1[core 19[hwt
0-1]]:[../../../../../../../../../..][BB/BB/BB/BB/BB/BB/BB/BB/BB/BB]

 Data for node: a00553.science.domain   Num slots: 1    Max slots: 0    Num
procs: 1
        Process OMPI jobid: [65415,1] App: 0 Process rank: 2 Bound: socket
0[core 0[hwt 0-1]], socket 0[core 1[hwt 0-1]], socket 0[core 2[hwt
0-1]], socket 0[core 3[hwt 0-1]], socket 0[core 4[hwt 0-1]], socket
0[core 5[hwt 0-1]], socket 0[core 6[hwt 0-1]], socket 0[core 7[hwt
0-1]], socket 0[core 8[hwt 0-1]], socket 0[core 9[hwt
0-1]]:[BB/BB/BB/BB/BB/BB/BB/BB/BB/BB][../../../../../../../../../..]

 =============================================================
[1,0]<stdout>:a00551.science.domain
[1,2]<stdout>:a00551.science.domain
[1,1]<stdout>:a00551.science.domain


if I login on a00551 and start using the hostfile generated by the
PBS_NODEFILE, everything works:

(from within the interactive session)
echo $PBS_NODEFILE
/var/lib/torque/aux//278.a00552.science.domain
cat $PBS_NODEFILE
a00551.science.domain
a00553.science.domain
a00551.science.domain

(from within the separate login)
mpirun --hostfile /var/lib/torque/aux//278.a00552.science.domain -np 3
--tag-output -display-map hostname

 Data for JOB [65445,1] offset 0

 ========================   JOB MAP   ========================

 Data for node: a00551  Num slots: 2    Max slots: 0    Num procs: 2
        Process OMPI jobid: [65445,1] App: 0 Process rank: 0 Bound: socket
0[core 0[hwt 0-1]], socket 0[core 1[hwt 0-1]], socket 0[core 2[hwt
0-1]], socket 0[core 3[hwt 0-1]], socket 0[core 4[hwt 0-1]], socket
0[core 5[hwt 0-1]], socket 0[core 6[hwt 0-1]], socket 0[core 7[hwt
0-1]], socket 0[core 8[hwt 0-1]], socket 0[core 9[hwt
0-1]]:[BB/BB/BB/BB/BB/BB/BB/BB/BB/BB][../../../../../../../../../..]
        Process OMPI jobid: [65445,1] App: 0 Process rank: 1 Bound: socket
1[core 10[hwt 0-1]], socket 1[core 11[hwt 0-1]], socket 1[core 12[hwt
0-1]], socket 1[core 13[hwt 0-1]], socket 1[core 14[hwt 0-1]], socket
1[core 15[hwt 0-1]], socket 1[core 16[hwt 0-1]], socket 1[core 17[hwt
0-1]], socket 1[core 18[hwt 0-1]], socket 1[core 19[hwt
0-1]]:[../../../../../../../../../..][BB/BB/BB/BB/BB/BB/BB/BB/BB/BB]

 Data for node: a00553.science.domain   Num slots: 20   Max slots: 0    Num
procs: 1
        Process OMPI jobid: [65445,1] App: 0 Process rank: 2 Bound: socket
0[core 0[hwt 0-1]], socket 0[core 1[hwt 0-1]], socket 0[core 2[hwt
0-1]], socket 0[core 3[hwt 0-1]], socket 0[core 4[hwt 0-1]], socket
0[core 5[hwt 0-1]], socket 0[core 6[hwt 0-1]], socket 0[core 7[hwt
0-1]], socket 0[core 8[hwt 0-1]], socket 0[core 9[hwt
0-1]]:[BB/BB/BB/BB/BB/BB/BB/BB/BB/BB][../../../../../../../../../..]

 =============================================================
[1,0]<stdout>:a00551.science.domain
[1,2]<stdout>:a00553.science.domain
[1,1]<stdout>:a00551.science.domain

I am kind of lost whats going on here. Anyone having an idea? I am
seriously considering this to be the problem of kerberos
authentification that we have to work with, but I fail to see how this
should affect the sockets.

Best,
Oswin
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Re: [OMPI users] Unable to mpirun from within torque

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