Hello everybody,

I've been trying the front-end mode in order to simulate more resources
than I really have.
I've configured my SLURM 2.6.2 whith these lines:

NodeName=dummy[1-1200] NodeHostName=node0 NodeAddr=10.0.0.1
> PartitionName=debug Nodes=dummy[1-1200] Default=YES MaxTime=INFINITE
> State=UP


Notice that node0 is the node where slurmctld and slumrd are running.

When I try to execute:

> sudo srun -Nx hostname

Where x is greater than 128 I get:

> srun: error: Unable to create job step: Task count specification invalid
> srun: Force Terminated job 688

While when x is  less than or equal 128 the execution is OK.

Why can not I use more nodes?

Regards.

-- 
*Sergio Iserte Agut, research assistant,*
*High Performance Computing & Architecture*
*University Jaume I (Castellón, Spain)*

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