<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">I’m trying to set my cloud nodes dynamically. In my slurm.conf, I do not specify a NodeAddr.<div class=""><br class=""></div><div class=""><div class=""><font face="Courier" class="">PartitionName=cloud Nodes=ALL Default=YES MaxTime=INFINITE State=UP</font></div><div class=""><font face="Courier" class="">NodeName=CPRuby1 CPUs=2 State=Cloud</font></div></div><div class=""><font face="Courier" class=""><br class=""></font></div><div class=""><b class="">My PowerSave script will then update the slurm controller via control with an IP address that AWS assigns me.</b></div><div class=""><font face="Courier" class=""><br class=""></font></div><div class=""><font face="Courier" class="">$scontrol update nodename=CPRuby1 nodeaddr=<MyNewIPAddress> state=POWER_UP</font></div><div class=""><font face="Courier" class="">$sinfo </font></div><div class=""><font face="Courier" class="">cloud* up infinite 1 idle CPRuby1</font></div><div class=""><font face="Courier" class=""><br class=""></font></div><div class="">Awesome! I can see by both the log files that the controller and the slurmd are indeed communicating and waiting for a job. However, when I try:</div><div class=""><br class=""></div><div class=""><div class=""><font face="Courier" class="">srun "echo hello world" </font></div><div class=""><font face="Courier" class="">srun: error: fwd_tree_thread: can't find address for host CPRuby1, check slurm.conf</font></div><div class=""><font face="Courier" class="">srun: error: Task launch for 7.0 failed on node CPRuby1: Can't find an address, check slurm.conf</font></div><div class=""><font face="Courier" class="">srun: error: Application launch failed: Can't find an address, check slurm.conf</font></div><div class=""><font face="Courier" class="">srun: Job step aborted: Waiting up to 32 seconds for job step to finish.</font></div></div><div class=""><font face="Courier" class=""><br class=""></font></div><div class="">It seems like the slurm controller is hell bent on me declaring the IP address ahead of time in slurm.conf. Is what I’m trying to do not possible?</div><div class=""><br class=""></div><div class="">Using<font face="Courier" class=""> slurm 15.08.7</font></div><div class=""><font face="Courier" class=""><br class=""></font></div><div class="">Thank you,</div><div class="">Jordan</div></body></html>