Did you build openmpi with multithreading enabled?
If not then that could be the problem.
Hi all,I have a MPI_Isend/MPI_Recv problem in a multi-thread program.In the program:The first machine has one thread does some computation and call MPI_Isend to send buffer to the second machine, and another thread is always trying toMPI_Recv data from the second machine. And the first thread will MPI_Wait its last MPI_Isend to complete before call MPI_Isend again.The second machine does the exact same thing.Then I got the result that :The first machine:Thread 0 : MPI_Isend data to the second machine successfully. but blocked in MPI_Wait be! cause last MPI_Isend did not complete.Thread 1 : try to MPI_Recv data from the second machine, but no data and it blocked.The second machine:Thread 0 : MPI_Isend data to the first machine successfully. but blocked in MPI_Wait because last MPI_Isend did not complete.Thread 1 : try to MPI_Recv data from the first machine, but no data and it blocked.Does anyone have any ideas? I appreciated it very much, because I have tracked the problem for two days but no progress.Eason Zhao
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