[mpich-discuss] What do these errors mean?

[Rajeev Thakur]

You need to use the mpicc and mpiexec from the MPICH2 installation that was
built to use MPD.
 
Rajeev
 


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From: mpich-discuss-bounces at mcs.anl.gov
[mailto:mpich-discuss-bounces at mcs.anl.gov] On Behalf Of Gauri Kulkarni
Sent: Wednesday, April 01, 2009 8:56 AM
To: mpich-discuss at mcs.anl.gov
Subject: [mpich-discuss] What do these errors mean?


Hi,

I am using MPICH2-1.0.7 (I cannot go to 1.0.8 right now) which is configured
to be used with SLURM. That is, the process manager is SLURM and NOT mpd.
When I submit my job through bsub (bsub [options] srun ./helloworld.mympi),
it works perfectly. I cannot use mpiexec as it is not the one spawning jobs,
I must use srun. My question is, can I still use mpiexec from command-line?
Well.. I tried. Here is the output:

mpiexec -n 2 ./helloworld.mympi
mpiexec_n53: cannot connect to local mpd (/tmp/mpd2.console_cgaurik);
possible causes:
  1. no mpd is running on this host
  2. an mpd is running but was started without a "console" (-n option)
In case 1, you can start an mpd on this host with:
    mpd &
and you will be able to run jobs just on this host.
For more details on starting mpds on a set of hosts, see
the MPICH2 Installation Guide.

Then:

mpd &
mpiexec -n 2 ./helloworld.mympi

Hello world! I'm 0 of 2 on n53
Fatal error in MPI_Finalize: Other MPI error, error stack:
MPI_Finalize(255)...................: MPI_Finalize failed
MPI_Finalize(154)...................:
MPID_Finalize(94)...................:
MPI_Barrier(406)....................: MPI_Barrier(comm=0x44000002) failed
MPIR_Barrier(77)....................:
MPIC_Sendrecv(120)..................:
MPID_Isend(103).....................: failure occurred while attempting to
send an eager message
MPIDI_CH3_iSend(172)................:
MPIDI_CH3I_VC_post_sockconnect(1090):
MPIDI_PG_SetConnInfo(615)...........: PMI_KVS_Get failedFatal error in
MPI_Finalize: Other MPI error, error stack:
MPI_Finalize(255)...................: MPI_Finalize failed
MPI_Finalize(154)...................:
MPID_Finalize(94)...................:
MPI_Barrier(406)....................: MPI_Barrier(comm=0x44000002) failed
MPIR_Barrier(77)....................:
MPIC_Sendrecv(120)..................:
MPID_Isend(103).....................: failure occurred while attempting to
send an eager message
MPHello world! I'm 1 of 2 on n53
IDI_CH3_iSend(172)................:
MPIDI_CH3I_VC_post_sockconnect(1090):
MPIDI_PG_SetConnInfo(615)...........: PMI_KVS_Get failed

The bold text shows that the job gets executed but there is a lot of other
garbage. It seems to me that I can either configure MPICH2 to be used with
cluster job scheduler or to be used from command line. I cannot have both.

Am I right?

-Gauri.
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