[mpich-discuss] MPI_Probe

[Jie Chen]

Hello,

I know that MPI_Probe is blocking (does not return immediately). If in my process I have two threads, one of which issues the MPI_Probe call while the other does something else. Will the MPI_Probe call block the execution of the other thread?

In general I also want to understand what does MPI_Probe do. In my limited imagination, I would see that the process (talking about no multithreading) polls messages from other processes. If so, how frequent does it look for the message?

Jie






-- 
Jie Chen
Mathematics and Computer Science Division
Argonne National Laboratory
Address: 9700 S Cass Ave, Bldg 240, Lemont, IL 60439
Phone: (630) 252-3313
Email: jiechen at mcs.anl.gov
Homepage: http://www.mcs.anl.gov/~jiechen