<div dir="ltr"><div>Hi,</div><div>We are doing a senior project involving the creation of a Pi Cluster. We are using 7 Raspberry Pi B+'s in this cluster. <br><br>When
we use sinfo to look at the status of the nodes, they appear as
drained. We also encountered a problem while trying to update the state
of the nodes. When trying to use scontrol to update the nodes, the get
an error message: scontrol update: invalid user id. We think another
reason that the nodes are drained is because of low "resources". This
has to do with the low socket*core*thread count, which is the number of
CPUs. We have tried changing this number in the configuration file but
this reason still shows.<br><br></div><div>We are unsure what the
problem is regarding this issue. The authentication method used is
munge, and we think that slurm is indeed using munge as the
authentication type.</div><div><br></div><div>If more information is needed, please let us know and we will provide the required information.<br><br></div><div>Thanks.</div></div>