[mpiwg-hybridpm] Can MPI processes request different threading levels?

[Joachim Jenke]

Hello,

I'm not sure whether this is the right group to ask, but it is related 
to hybrid execution :)

Must all MPI processes collectively call MPI_Init or MPI_Init_thread - 
or can some processes call one and other processes call the other function?

Also, can the processes request different thread-support levels?

Our use case is MPMD execution, where some processes run multi-threaded 
and other single-threaded.

Thanks,
Joachim


-- 
Dr. rer. nat. Joachim Jenke

IT Center
Group: High Performance Computing
Division: Computational Science and Engineering
RWTH Aachen University
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jenke at itc.rwth-aachen.de
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