[mpich-discuss] Fault tolerance after MPI_Comm_connect/accept

[Matthieu Dorier]

Hi, 


I'm connecting two MPI applications A and B using MPI_Comm_accept in A and MPI_Comm_connect in B. I would like to know a bit more about the behavior in case one application stops (say B): will a communication attempt (e.g. MPI_Send) from a process from A to a process from B crash? return an error? block? 
Is there a way for application A to notice that B has stopped in order to avoid communicating with it? 


Thanks. 


PS: by the way for whom is involved in the MPI forum, an MPI_Comm_iaccept in the MPI3 standard would have been useful. Something to keep in mind for the next version maybe ;) 


Matthieu Dorier 
PhD student at ENS Cachan Brittany and IRISA 
http://people.irisa.fr/Matthieu.Dorier 
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