[mvapich-discuss] channel initialization failed

[Hari Subramoni]

Hello Xingsheng,

This looks like a system issue. MVAPICH2 is not able to resolve the
hostname. I'd recommend you request your system admin to look into why this
is happening.

If you want to circumvent this issue, I would suggest running MVAPICH2
after setting MV2_USE_XRC=0. This will make MVAPICH2 not execute this piece
of code.

On a different note, I would suggest that you update to the latest version
of MVAPICH2 (2.2GA). You should be able to download it from the following
site http://mvapich.cse.ohio-state.edu/downloads/

Regards,
Hari.

On Fri, Nov 11, 2016 at 11:42 AM, Xingsheng Sun <xssun at vt.edu> wrote:

> Dear ALL,
>
> I have one problem about my c++ code. I ran my code on the cluster. The
> weird phenomenon is that sometimes it works well but sometimes not. The
> errors are
>
> <https://sites.google.com/vt.edu/xssun>
> [cli_191]: aborting job:
> Fatal error in MPI_Init:
> Other MPI error, error stack:
> MPIR_Init_thread(436)...:
> MPID_Init(371)..........: channel initialization failed
> MPIDI_CH3_Init(285).....:
> MPIDI_CH3I_CM_Init(1430): gethostbyname failed, Unknown host (errno 1)
>
> I am using mvapich2 and Petsc/Tao. The versions of them are
>
> intel/13.1,  mvapich2/2.0
> petsc/3.5.2
>
> Could any of you help me resolve this problem? Many Thanks!
>
> Sincerely,
> Xingsheng
>
> _______________________________________________
> mvapich-discuss mailing list
> mvapich-discuss at cse.ohio-state.edu
> http://mailman.cse.ohio-state.edu/mailman/listinfo/mvapich-discuss
>
>
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