I had missed cloud_reg_addrs - we're running an older version of Slurm and although I'd found https://slurm.schedmd.com/archive/slurm-23.02.7/power_save.html I hadn't gone through all of the options in https://slurm.schedmd.com/archive/slurm-23.02.7/slurm.conf.html
Thank you for your help, Martin On Fri, 19 Jul 2024, at 16:21, Brian Andrus via slurm-users wrote: > Martin, > > In a nutshell, when slurmd starts, it tells that info to slurmctld. That is > the "registration" event mentioned. > > Brian Andrus > > On 7/19/2024 5:44 AM, Martin Lee via slurm-users wrote: >> I've read the following in the slurm power saving docs: >> https://slurm.schedmd.com/power_save.html >> >>> *cloud_dns* >>> By default, Slurm expects that the network addresses for cloud nodes won't >>> be known until creation of the node and that Slurm will be notified of the >>> node's address upon registration. Since Slurm communications rely on the >>> node configuration found in the slurm.conf, Slurm will tell the client >>> command, after waiting for all nodes to boot, each node's IP address. >>> However, in environments where the nodes are in DNS, this step can be >>> avoided by configuring this option. >>> >> >> I am creating the nodes on demand and don't know the IP ahead of the >> instance start, so cloud_dns is not set. >> >> I'm confused specifically by "Slurm will be notified of the node's address >> upon registration." Who/what is expected to do this? If it is expected to be >> performed by the ResumeProgram, does it need to be done before slurmd starts >> on the node? Is it OK if the node does it after slurmd has started with >> something like: >> >> scontrol update nodename=$(hostname -s) nodeaddr=$(hostname -I) >> nodehostname=$(hostname) >> scontrol reconfigure >> >> Thank you, >> >> Martin >> > > -- > slurm-users mailing list -- slurm-users@lists.schedmd.com > To unsubscribe send an email to slurm-users-le...@lists.schedmd.com >
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