[mvapich-discuss] handling of RDMA_CM_EVENT_REJECTED event in MVAPICH2-1.2p1

[gossips J]

Hi Hari,
thanks for the response.

Yes, this event is considered as CONNECT_ERROR and task aborts but REJECT
has no handling so it does nothing.

Two question:
1. Why should task gets aborted on Connect Error event. As i can predict the
side effect would be affecting other connections with same src-dst pair in
data transfer operation.

2. What happens in case of Reject event? Mvapich simply has DEBUG_PRINT and
break out of switch case.

Thanks,
Polk.

On Tue, Aug 11, 2009 at 6:33 PM, Hari Subramoni <subramon at cse.ohio-state.edu
> wrote:

> Hi Polk,
>
> The RDMA_CM_EVENT_REJECTED event is being handled inside mvapich2-1.2p1.
> On receiving this event, the task will abort.
>
> This is done in 'src/mpid/ch3/channels/mrail/src/gen2/rdma_cm.c' in the
> function 'ib_cma_event_handler'.
>
> Please let us know if you have any further questions.
>
> Thx,
> Hari.
>
> On Tue, 11 Aug 2009, gossips J wrote:
>
> > Hi,
> >
> > It looks like there is no handling for RDMA_CM_EVENT_REJECTED event in ""
> > file.
> >
> > There has to be some sort of handling, isnt it?
> >
> > Is this feature (CM_REJECT) supported in mvapich2-1.2p1 over OFA???
> >
> > In current scenario mvapich2 simply stuck during such event since there
> is
> > no handling in MPI (mvapich2).
> >
> > Thoughts???
> >
> > Thanks,
> > Polk.
> >
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mail.cse.ohio-state.edu/pipermail/mvapich-discuss/attachments/20090812/ecbe2412/attachment-0001.html