Hello Everyone,

I have a rather large network application, which runs on cluster of Linux machines.

I am using MPI_Ssend and a corresponding a MPI_Recv. I notice that whenever MPI_Recv starts waiting firs, and then MPI_Ssend is posted, the MPI calls just block. This, of course results in non-coherent application behavior.

Am I missing something? If yes, how do I find out where I am going wrong?

I tried VampirTrace but I am having trouble making shared libraries, and when the application runs I get assertion errors which leads to signal 6 (abort).

Thanks for any help.


Devendra Rai