Openmpi support

[adarsh]

Could you please update below script :

@liuxiaopiao

[test@pbspro-server ~]$ cat test.sh
#!/bin/bash
#PBS -N pbs-openmpi-sh
#PBS -l select=2
#PBS -l place=scatter
cat PBS_NODEFILE hostnumber=(cat $PBS_NODEFILE | wc -l)
/opt/openmpi/1.10.7/bin/mpirun hostname

To :

#!/bin/bash
#PBS -N pbs-openmpi-sh
#PBS -l select=2:ncpus=2:mpiprocs=2
#PBS -l place=scatter
/opt/openmpi/1.10.7/bin/mpirun -np `cat $PBS_NODEFILE | wc -l` /bin/hostname

@liuxiaopiao

Could you please help check why my two jobs have hanged?

The issue is DNS / Name resolution

1. Check DNS ( forward and reverse resolution of pbs server , pbs nodes on the pbs server and from the pbs nodes )
2. Make sure /etc/hosts is populated with pbs server and compute node names/ips/alias and exist on all the nodes of the PBS Complex.
3. without using PBS Pro , can you run open-mpi by having a static hostfile of node names – please check this.