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Subject: Re: [OMPI users] Problem moving from 1.4 to 1.6
From: Ralph Castain (rhc_at_[hidden])
Date: 2014-06-27 15:41:54


Let me steer you on a different course. Can you run "ompi_info" and paste the output here? It looks to me like someone installed a version that includes uDAPL support, so you may have to disable some additional things to get it to run.

On Jun 27, 2014, at 9:53 AM, Jeffrey A Cummings <Jeffrey.A.Cummings_at_[hidden]> wrote:

> We have recently upgraded our cluster to a version of Linux which comes with openMPI version 1.6.2.
>
> An application which ran previously (using some version of 1.4) now errors out with the following messages:
>
> librdmacm: Fatal: no RDMA devices found
> librdmacm: Fatal: no RDMA devices found
> librdmacm: Fatal: no RDMA devices found
> --------------------------------------------------------------------------
> WARNING: Failed to open "OpenIB-cma" [DAT_INTERNAL_ERROR:].
> This may be a real error or it may be an invalid entry in the uDAPL
> Registry which is contained in the dat.conf file. Contact your local
> System Administrator to confirm the availability of the interfaces in
> the dat.conf file.
> --------------------------------------------------------------------------
> [tupile:25363] 2 more processes have sent help message help-mpi-btl-udapl.txt / dat_ia_open fail
> [tupile:25363] Set MCA parameter "orte_base_help_aggregate" to 0 to see all help / error messages
>
> The mpirun command line contains the argument '--mca btl ^openib', which I thought told mpi to not look for the ib interface.
>
> Can anyone suggest what the problem might be? Did the relevant syntax change between versions 1.4 and 1.6?
>
>
> Jeffrey A. Cummings
> Engineering Specialist
> Performance Modeling and Analysis Department
> Systems Analysis and Simulation Subdivision
> Systems Engineering Division
> Engineering and Technology Group
> The Aerospace Corporation
> 571-307-4220
> jeffrey.a.cummings_at_[hidden]
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