[mvapich-discuss] ibv_channel_manager error message

[Hari Subramoni]

Hello Martin,

Was this the first error that was observed or were there any other failures
before this? For instance, could you please let us know if the destination
rank (looks like it was 7 in this case) failed for some reason like a
segfault / assertion?

Could you send us the output of mpiname -a?

If you've a debug build, can you rerun it with MV2_DEBUG_SHOW_BACKTRACE=2
and send us the backtrace?

Regards,
Hari.

On Thu, May 5, 2016 at 1:06 PM, Martin Pokorny <mpokorny at nrao.edu> wrote:

> I have on occasion been seeing error messages like the following:
>
> [cbe-node-29:mpi_rank_32][handle_cqe]
>> ../src/mpid/ch3/channels/mrail/src/gen2/ibv_channel_manager.c:587: [] Got
>> completion with error 4, vendor code=0x54, dest rank=7
>>
>
> There's no message written by the receiving rank at the time the sending
> rank wrote this message. Can anyone shed any light on what the underlying
> cause might be? I know that I've not provided much information, but I'm
> happy to provide more if it would be helpful. I'm using mvapich2-2.1 on
> RHEL 6.3.
>
> --
> Martin
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