[mpich-discuss] MPI_Barrier(comm=MPI_COMM_WORLD) failed

Hello, Some times I see the below error when running my python app across two nodes. Just wondering under what conditions we get the below error? I am using 3.3.1 version regards, Sudhakar PMPI_Barrier(289)...................: MPI_Barrier(comm=MPI_COMM_WORLD) failed PMPI_Barrier(275)...................: MPIR_Barrier_impl(175)..............: MPIR_Barrier_intra_auto(110)........: MPIR_Barrier_intra_dissemination(49): MPIC_Sendrecv(344)..................: