>Hi, >I think if you use MPI_Isend it work correctly! >test this and write me what happen!
yep, that's the first thought I had myself, but in spite of being non-blocking, the Isend routine gets stuck and segmentates exactly with the same error message as before. I'm just wondering how MPI_sendrecv is implemented. I was expecting it to be exactly equivalent to one send + one receive. Does anyone know the details of the implementation in openmpi?
