[mvapich-discuss] Timeouts for MPI_Bcast, MPI_Barrier and MPI_Win_fence

[Mayhall, Anthony J. (MSFC-ES53)[TBE-1]]

Thanks for the quick reply.  It is something that we will definitely need to have.  We would need to be able to specify the timeout in at least 1ms increments.

Thanks,

Anthony Mayhall
Davidson Technologies, Inc.
(256)544-7620


-----Original Message-----
From: Pavan Balaji [mailto:balaji at mcs.anl.gov] 
Sent: Wednesday, October 28, 2009 11:03 AM
To: Mayhall, Anthony J. (MSFC-ES53)[TBE-1]
Cc: mvapich-discuss at cse.ohio-state.edu
Subject: Re: [mvapich-discuss] Timeouts for MPI_Bcast, MPI_Barrier and MPI_Win_fence


On 10/28/2009 10:23 AM, Mayhall, Anthony J. (MSFC-ES53)[TBE-1] wrote:
> Is it possible to specify a timeout value for MPI_Bcast, MPI_Barrier 
> and MPI_Win_fence so that those calls would fail once the timeout 
> value is reached? We are trying to use MPI in a real-time 
> hardware-in-the-loop application and we need to be able to have those
> calls timeout so the processes will not hang.

The current MPI-2.2 standard doesn't allow this. However, a similar
issue was raised by another application scientist here at Argonne. Maybe
it is something to be considered for MPI-3.

 -- Pavan

-- 
Pavan Balaji
http://www.mcs.anl.gov/~balaji