Use the raxmlHPC-MPI
program compiled against OpenMPI.
#!/bin/sh
#PBS -l nodes=4:ppn=1
#PBS -q long
#PBS -N myname
. /usr/modules/init/bash
module load openmpi openmpi-apps/1.6.4/raxml/8.0.5
mpirun raxmlHPC-MPI -f a -s $HOME/alg -x 12345 -# 10 -m GTR -n TEST
#!/bin/sh
#SBATCH -N 4
#SBATCH -J myname
. /usr/modules/init/bash
module load openmpi/1.10.2 openmpi-apps/1.10.2/raxml/8.0.5
ulimit -l unlimited
mpirun raxmlHPC-MPI -f a -s $HOME/alg -x 12345 -# 10 -m GTR -n TEST
Note: be sure to include -# or -N AND -b,-x or -f a -x options or the program will not work properly.