[mvapich-discuss] Configuration of version 2.3 with TCP fallback?

[Hari Subramoni]

Hi,

At this point, the default MVAPICH channel cannot use TCP as a fallback if
IB fails.

Please note that IB is a pretty resilient fabric and it is unlikely to
fail. Thus you may never need such a fallback option.

Thx,
Hari.

On Tue, Jun 6, 2017 at 7:02 AM, Petr Hanousek <petr.hanousek at cesnet.cz>
wrote:

> Dear all,
> in my previous mail I was really "out" when I tried to use
>
> ./configure --prefix=/software/mvapich/2.3/gcc --enable-cxx
> --enable-fortran=all --with-pm=hydra --with-device=ch3:mrail:ib,tcp
> --enable-pbs-launcher --with-ibverbs=/software/ofed-1.5.4 --enable-shared
>
> After careful read of documentation and some googling around and some
> test I assume my --with-device parameter is bad. And it was caused by my
> misunderstanding of the whole concept. So my question now is if mvapich
> 2.3 can be configured to use IB with TCP fallback if IB fails, when
> Nemesis is deprecated?
>
> Cheers Petr
>
> --
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