[mpich-discuss] Semantics of MPI_Cancel

[Matthieu Dorier]

Hi, 


Suppose process 0 does the following 
MPI_Irecv(...req) 
MPI_Cancel(req) 
MPI_Recv 


and process 1 does 
MPI_Send 
MPI_Send 


Does process 0 receives the data from the first or the second MPI_Send? 
(I'd tend to say the second, but I'd like a confirmation). 


Thanks! 


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