[mvapich-discuss] Assertion failure

[Martin Pokorny]

On 01/14/2013 05:01 PM, Martin Pokorny wrote:
> Hello everyone,
>
> I've been occasionally seeing the following assertion error under
> mvapich2-1.9a2. The conditions leading to the failure are not clear to
> me (I'm working on a real-time data processing system), but this failure
> only occurs sporadically.
>
> Assertion failed in file
> src/mpid/ch3/channels/mrail/src/rdma/ch3_rndvtransfer.c at line 922:
> vc->ch.pending_r3_data == 0
>
> Note the I have been making some modifications to MPI-IO routines, so
> that muddies the waters a bit, but are there any known conditions that
> might trigger this assertion failure? Are there any configuration
> variables that I might change to (try to) avoid this failure?

Just to close off this thread, the problem turned out to be related to 
dynamically loading libmpich. Moving the call to MPI_Init_thread() out 
of the dynamically loaded part of my code into main() solved the 
problem. Thanks for the help, mvapich2 team.

-- 
Martin