[R-sig-hpc] Rmpi and LAM: no spawning between 64 bit and 32 bit systems?
win at comets.de
Thu Jul 23 13:38:04 CEST 2009
thanks to the list, I got Rmpi and LAM running on a Suse 64 bit system.
Connecting LAM to slaves running Suse 32 bit (vm-linuxgeco1,
vm-linuxgeco2) works fine as checked with lamexec on either machine:
> lamexec C hostname
However, spawning 32-bit slaves from from R on the 64 bit machine
(linuxmodel) or vice versa gives an error:
Fehler in mpi.comm.spawn(slave = system.file("Rslaves.sh", package =
MPI_Error_string: error spawning process
while spawning from a 32 bit machine using only the other 32 bit slave
Is there a general requirement to have the same architecture and/or file
layout in a Rmpi comm?
I suspect e.g. the parameter Rscript
(=system.file("Rslaves.sh",package="Rmpi") by default) evaluates
differently for the two architectures. Is there any need & way to specify
this separately for each slave?
Thanks in advance,
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