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vielen
2008 May 30
1
R and Openmpi
...e have R working with Rmpi/openmpi, but I'm a little worried. Specifically, (a) the -np flag doesn't seem to override the hostfile (it works fine with fortran hello world) and (b) I appear to have twice as many processes running as I think I should.
Rmpi version 0.5.5
Openmpi version 1.1
Viglen HPC with (effectively) 9 blades and 8 nodes on each blade.
myhosts file contains details of the 9 blades, but specifies that there are 4 slots on each blade (to make sure I leave room for other users).
When running mpirun -bynode -np 2 -hostfile myhosts R --slave --vanilla task_pull.R
1. I get...