Are you setting any MCA parameters, such as btl_tcp_if_include or btl_tcp_if_exclude, perchance? They could be in your environment or in a file, too.
I ask because we should be skipping the loopback device by default (i.e., it should be covered by the default value of btl_tcp_if_exclude). What is the output from ifconfig? On Jul 11, 2012, at 12:12 PM, Siegmar Gross wrote: > Hello Reuti, > > thank you for your reply. > >>> I get the following error when I try to run my programs with >>> openmpi-1.6.0. >>> >>> tyr hello_1 52 which mpiexec >>> /usr/local/openmpi-1.6_32_cc/bin/mpiexec >>> tyr hello_1 53 >>> >>> tyr hello_1 51 mpiexec --host tyr,sunpc1 -np 3 hello_1_mpi >>> Process 0 of 3 running on tyr.informatik.hs-fulda.de >>> Process 2 of 3 running on tyr.informatik.hs-fulda.de >>> [[4154,1],0][../../../../../openmpi-1.6/ompi/mca/btl/tcp/btl_tcp_endpoint.c:586:m >>> ca_btl_tcp_endpoint_start_connect] from tyr.informatik.hs-fulda.de to: >>> sunpc1 >>> Unable to connect to the peer 127.0.0.1 on port 1024: Connection refused >>> >>> Process 1 of 3 running on sunpc1.informatik.hs-fulda.de >>> [[4154,1],1][../../../../../openmpi-1.6/ompi/mca/btl/tcp/btl_tcp_endpoint.c:586:m >>> ca_btl_tcp_endpoint_start_connect] from sunpc1.informatik.hs-fulda.de to: >>> tyr >>> Unable to connect to the peer 127.0.0.1 on port 516: Connection refused >> >> Some distributions give the loopback interface also the name of the host. Is >> there an additonal line: >> >> 127.0.0.1 tyr.informatik.hs-fulda.de >> >> in /etc/hosts besides the localhost and interface entry? > > No it isn't. > > tyr etc 16 more hosts > # > # Internet host table > # > ::1 localhost > 127.0.0.1 localhost > ... > > tyr etc 20 ssh sunpc1 head /etc/hosts > 127.0.0.1 localhost > ... > > > Kind regards > > Siegmar > > > > > >>> [sunpc1.informatik.hs-fulda.de:24555] *** An error occurred in MPI_Barrier >>> [sunpc1.informatik.hs-fulda.de:24555] *** on communicator MPI_COMM_WORLD >>> [sunpc1.informatik.hs-fulda.de:24555] *** MPI_ERR_INTERN: internal error >>> [sunpc1.informatik.hs-fulda.de:24555] *** MPI_ERRORS_ARE_FATAL: your MPI >>> job will >>> now abort >>> ... >>> >>> >>> I have no problems with just one host (in this case "127.0.0.1" should >>> work). Why didn't mpiexec use the ip-addresses of the hosts in the >>> above example? >>> >>> >>> tyr hello_1 53 mpiexec --host tyr -np 2 hello_1_mpi >>> Process 0 of 2 running on tyr.informatik.hs-fulda.de >>> Now 1 slave tasks are sending greetings. >>> Greetings from task 1: >>> ... >>> >>> >>> tyr hello_1 54 mpiexec --host sunpc1 -np 2 hello_1_mpi >>> Process 1 of 2 running on sunpc1.informatik.hs-fulda.de >>> Process 0 of 2 running on sunpc1.informatik.hs-fulda.de >>> Now 1 slave tasks are sending greetings. >>> Greetings from task 1: >>> ... >>> >>> >>> The problem doesn't result from the heterogeneity of the two >>> hosts because I get the same error with two Sparc-systems or >>> two PCs. I didn't have any problems with openmpi-1.2.4. >>> >>> tyr hello_1 18 mpiexec -mca btl ^udapl --host tyr,sunpc1,linpc1 \ >>> -np 4 hello_1_mpi >>> Process 0 of 4 running on tyr.informatik.hs-fulda.de >>> Process 2 of 4 running on linpc1 >>> Process 1 of 4 running on sunpc1.informatik.hs-fulda.de >>> Process 3 of 4 running on tyr.informatik.hs-fulda.de >>> Now 3 slave tasks are sending greetings. >>> Greetings from task 2: >>> ... >>> >>> tyr hello_1 19 which mpiexec >>> /usr/local/openmpi-1.2.4/bin/mpiexec >>> >>> Do you have any ideas why it doesn't work with openmpi-1.6.0? >>> I configured the package with >>> >>> ../openmpi-1.6/configure --prefix=/usr/local/openmpi-1.6_32_cc \ >>> LDFLAGS="-m32" \ >>> CC="cc" CXX="CC" F77="f77" FC="f95" \ >>> CFLAGS="-m32" CXXFLAGS="-m32 -library=stlport4" FFLAGS="-m32" \ >>> FCFLAGS="-m32" \ >>> CPP="cpp" CXXCPP="cpp" \ >>> CPPFLAGS="" CXXCPPFLAGS="" \ >>> C_INCL_PATH="" C_INCLUDE_PATH="" CPLUS_INCLUDE_PATH="" \ >>> OBJC_INCLUDE_PATH="" MPIHOME="" \ >>> --without-udapl --without-openib \ >>> --enable-mpi-f90 --with-mpi-f90-size=small \ >>> --enable-heterogeneous --enable-cxx-exceptions \ >>> --enable-orterun-prefix-by-default \ >>> --with-threads=posix --enable-mpi-thread-multiple \ >>> --enable-opal-multi-threads \ >>> --with-hwloc=internal --with-ft=LAM --enable-sparse-groups \ >>> |& tee log.configure.$SYSTEM_ENV.$MACHINE_ENV.32_cc >>> >>> Thank you very much for any help in advance. >>> >>> >>> Kind regards >>> >>> Siegmar >>> >>> _______________________________________________ >>> users mailing list >>> us...@open-mpi.org >>> http://www.open-mpi.org/mailman/listinfo.cgi/users >> >> > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users -- Jeff Squyres jsquy...@cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/
