Hi,
I’m doing some research on message logging protocols. It seems that Vprotocol
in Open MPI can wrap around communication calls and log messages, if enabled.
Unfortunately, when I try to use it with Open MPI- 4.0.0, I get an error:
mpirun --mca vprotocol pessimist -mca vprotocol_pessimist_priority 10 -n
4 $HOME/NPB3.3-MPI/bin/cg.B.4
…
vprotocol_pessimist: component_init: threads are enabled, and not supported by
vprotocol pessimist fault tolerant layer, will not load
…
Unfortunately, it seems that actually disabling multi-threading is not possible
in 4.0.0 (MPI_THREAD_MULTIPLE is always used during compilation, and in
contrast to the README file, --enable-mpi-thread-multiple or
—disable-mpi-thread-multiple are not recognised as options).
I’m pretty much stuck. Should I give up on the VProtocol as unusable then at
the moment?
Thanks,
Kiril
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