[mvapich-discuss] What's the equivalent option to "--mca btl" of openmpi

[Hari Subramoni]

Hello Jianyu,

To configure MVAPICH2 use the TCP/IP interface, please follow the
instructions available at the following link

http://mvapich.cse.ohio-state.edu/support/user_guide_mvapich2-2.0b.html#x1-190004.11

To run applications using the TCP/IP interface, please follow the
instructions available at the following link

http://mvapich.cse.ohio-state.edu/support/user_guide_mvapich2-2.0b.html#x1-400005.2.9

If you configure the MVAPICH2 library to use the TCP/IP interface, it will
automatically disable the use of OpenFabrics (IB/iWARP) features. You can
still use the OpenFabrics interface in IP over IB mode (just like a high
performance GigE adapter).

Please let us know if you have any further questions.

Regards,
Hari.


On Thu, Mar 13, 2014 at 5:17 AM, Jianyu Liu <jerry_leo at msn.com> wrote:

> Dear Sir/Madam,
>
> I'd like to set certain run-time characteristics of MPI  communications.
>
> What's the equivalent options of MVAPICH2  to these "--mca btl" options of
> OpenMPI?
>
> #  Specify to use the TCP network for MPI messages
> 1 ) mpirun  --mca btl tcp,self ...
>
> #  Top explicitly disable the OpenFabrics network
> 2) mpirun --mca btl ^openib  ...
>
> #  Optimizing Failover Timing
> 3)  mpirun --mca btl_openib_ib_min_rnr_timer 25  btl_openib_ib_timeout 20
> ...
>
>
> Thanks for your time
>
> Regards
>
> Jianyu
>
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>
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