On Tue, Jul 27, 2010 at 7:29 PM, Gus Correa <g...@ldeo.columbia.edu> wrote:
> Hi Cristobal > > Does it run only on the head node alone? > (Fuego? Agua? Acatenango?) > Try to put only the head node on the hostfile and execute with mpiexec. > --> i will try only with the head node, and post results back > This may help sort out what is going on. > Hopefully it will run on the head node. > > Also, do you have Infinband connecting the nodes? > The error messages refer to the openib btl (i.e. Infiniband), > and complains of no we are just using normal network 100MBit/s , since i am just testing yet. > > "perhaps a missing symbol, or compiled for a different > version of Open MPI?". > It sounds as a mixup of versions/builds. > --> i agree, somewhere there must be the remains of the older version > > Did you configure/build OpenMPI from source, or did you install > it with apt-get? > It may be easier/less confusing to install from source. > If you did, what configure options did you use? > -->i installed from source, ./configure --prefix=/opt/openmpi-1.4.2 --with-sge --without-xgid --disable--static > > Also, as for the OpenMPI runtime environment, > it is not enough to set it on > the command line, because it will be effective only on the head node. > You need to either add them to the PATH and LD_LIBRARY_PATH > on your .bashrc/.cshrc files (assuming these files and your home directory > are *also* shared with the nodes via NFS), > or use the --prefix option of mpiexec to point to the OpenMPI main > directory. > yes, all nodes have their PATH and LD_LIBRARY_PATH set up properly inside the login scripts ( .bashrc in my case ) > > Needless to say, you need to check and ensure that the OpenMPI directory > (and maybe your home directory, and your work directory) is (are) > really mounted on the nodes. > --> yes, doublechecked that they are > > I hope this helps, --> thanks really! > > Gus Correa > > Update: i just reinstalled openMPI, with the same parameters, and it seems > that the problem has gone, i couldnt test entirely but when i get back to > lab ill confirm. > best regards! Cristobal
