Newsgroups: comp.parallel.mpi From: "Christoph Schlarmann" Subject: Convex Exemplar SPP1200 and MPI Organization: C. v. Ossietzky Universitaet Oldenburg - Fachbereich Informatik Date: Tue, 19 May 1998 16:59:24 +0200 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8bit Message-ID: <6js6n1$q3u@news.Informatik.Uni-Oldenburg.DE> Hi out there, I'd like to know how to persuade the Convex Exemplar SPP1200 with SPP-UX 4.2 to run a program on more than 2 processors using the MPI. Using mpirun -np 2 "program" works fine (one functional Block?). If I use more than 2 processors, I'll get the following error message: > mpirun -d -v -np 4 fish 100 100 mpirun (debug): debug 1, pretend 0, verbose 1, wait 0 mpirun (debug): SPMD cmd: -np 4 fish 100 100 mpirun (debug): temp. appfile /tmp/mpiafAAAa03864 parsing application description... identifying hosts... mpirun (debug): main socket port 1407 spawning processes... collecting process information... broadcasting process information... go/no-go synchronization... 2 - Erro0 - Error in MPIr in MPI_RECV_IN_RECV_INITIT : Inval : Invalid commuid communicatornicator > 3 - Error in MPI_RECV_INIT : Invalid communicator fish: rank 3: Aborting the application This happens with any other application using MPI. As I understand, mpirun should set the environment right to use MPI (MPICH). Do I have to set up a host-file or something else? And if, how should it look like? Any help or hints are appreciated. Thanks in advance, Christoph -- Email: christoph.schlarmann@informatik.uni-oldenburg.de