Hi It seems that you have mixed an "old" LAM-MPI installation with OpenMPI.
To make sure your OpenMPI installation is ok you could try to use the complete path to mpirun: /data1/cluster/openmpi/bin/mpirun -np 1 /tmp/openmpi-1.4.3/examples/ring_c You should also make sure that the compile-command is the one of OpenMPI and not of LAM MPI. ( /data1/cluster/openmpi/bin/mpiCC or something like that) Check your PATH environment variable to make sure it doesn't contain any of the LAM MPI directories, and make sure you set the LD_LIBRARY_PATH variable correctly (see http://www.open-mpi.org/faq/?category=running#run-prereqs) Hope this helps Jody On Thu, Jul 7, 2011 at 8:44 AM, zhuangchao <freeo...@163.com> wrote: > hello all : > > I installed the openmpi-1.4.3 on redhat as the following step : > > 1. ./configure --prefix=/data1/cluster/openmpi > > 2. make > > 3. make install > > And I compiled the examples of openmpi-1.4.3 as the following > step : > > 1. make > > Then I run the example : > > ./mpirun -np 1 /tmp/openmpi-1.4.3/examples/ring_c > > I get the following error : > > ----------------------------------------------------------------------------- > It seems that there is no lamd running on the host node1. > This indicates that the LAM/MPI runtime environment is not operating. > The LAM/MPI runtime environment is necessary for MPI programs to run > (the MPI program tired to invoke the "MPI_Init" function). > > Please run the "lamboot" command the start the LAM/MPI runtime > environment. See the LAM/MPI documentation for how to invoke > "lamboot" across multiple machines. > ----------------------------------------------------------------------------- > > I run openmpi , but I get the error from lam-mpi . why ? > Can you help me ? > > Thank you ! > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users >
