do you have an example for the extended collective operations tests
which fail? It would help track down the problem. I had a quick look at
our implementation but I can not find an obvious problem, so an example
would be extremely helpful.
>> - Some extended collective communications failed (not by raising
>> errors, but instead aborting tracing to stdout) when using
>> intercommunicators. Sometimes, the problems appeared when
>> size(local_group) != size(remote_group). However, MPI_Barrier and
>> MPI_Bcast worked well. I still could not get the reasons for those
>> failures. I've found a similar problem in MPICH2 when configured
>> with error-cheking enabled (they had a bug in some error-cheking
>> macros, I reported this issue and next they told me I was right).