Bennet --

Just curious: is there a reason you're not using UCX?


> On Feb 2, 2020, at 4:06 PM, Bennet Fauber via users 
> <users@lists.open-mpi.org> wrote:
> 
> We get these warnings/error from OpenMPI, version 3.1.4 and 4.0.2
> 
> --------------------------------------------------------------------------
> WARNING: No preset parameters were found for the device that Open MPI
> detected:
> 
>  Local host:            gl3080
>  Device name:           mlx5_0
>  Device vendor ID:      0x02c9
>  Device vendor part ID: 4123
> 
> Default device parameters will be used, which may result in lower
> performance.  You can edit any of the files specified by the
> btl_openib_device_param_files MCA parameter to set values for your
> device.
> 
> NOTE: You can turn off this warning by setting the MCA parameter
>      btl_openib_warn_no_device_params_found to 0.
> --------------------------------------------------------------------------
> 
> --------------------------------------------------------------------------
> WARNING: There was an error initializing an OpenFabrics device.
> 
>  Local host:   gl3080
>  Local device: mlx5_0
> --------------------------------------------------------------------------
> 
> Does anyone know how I can find the parameters that should be set in
> $PREFIX/etc/btl_openib_device_param.conf or other OpenMPI
> configuration files so that those warnings do not occur?
> 
> How might I find the cause of the initialization error?
> 
> Sorry for the ignorance behind this question.


-- 
Jeff Squyres
jsquy...@cisco.com

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