I'm using R on a Ubuntu 8.10 machine, and, in particular, quite a lot of papply calls to analyse data. I'm currently using the LAM implementation, as it's the only one I've got to work properly. However, while it works fine on one PC, it fails with the error message
Error in mpi.comm.spawn(slave = system.file("Rslaves.sh", package = "Rmpi"), : MPI_Error_string: error spawning process when I try to run it over a network on two machines. However, I've got passwordless ssh working fine, and the lamnodes command seems to suggest I've got all the nodes up and running fine (the other computer is also Ubuntu 8.10) and lamhosts() from within R shows all the nodes perfectly well. I've even got mpirun to work on both machines. Can anyone help with (A) getting my current setup with R to work and / or (B) suggestions for getting OpenMPI to work at all! (and preferably on multiple machines). Many thanks, Paul Wardman University of York