[Mpi3-ft] about MPI fault tolerance

[王睿]

Hi, all

I'm now learning MPI, but I'm not clear with the following questions,

1, suppose a MPI program involves several nodes, if one node dead, will the
program terminate?

2, Is there any possibility to extend or shrink the size of MPI communicator
size? If so, we can use spare node to replace the dead node?

Thanks in advance and your reply will be highly appreciated!

Best Regards,
Rui Wang
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