On 11/24/23 12:15, Ole Holm Nielsen wrote:
On 11/24/23 09:31, Gestió Servidors wrote:
Some days ago, I started to configure a new server with SLURM 23.02.5.
Yesterday, I read in this mailing list that version 23.11.0 was
released, so today I have compiled this latest version. However, after
starting slurmdbd (with a database upgrade), I have got problems with
slurmctld, because of “select/cons_res” has dissapeard and, now, this
parameter must be changed to “select_cons/tres”. If I change this, what
is the impact in the system/cluster? What are the differences between
“select_cons/res” and “select_cons/tres” if in newest versions it is
mandatory to configure in this way?
In https://bugs.schedmd.com/show_bug.cgi?id=15470#c3 you can read:
When making a change from cons_res to cons_tres there isn't much you
need to do. These two select type plugins are very similar. The
difference being that the cons_tres plugin adds much more functionality
related to GPUs. If you're moving from cons_res to cons_tres there
shouldn't be any effect on the running jobs. If you were changing from
cons_tres to cons_res and you had jobs on the system that used the new
syntax that is available for GPUs, then you would run into problems.
For your reference, this is described in the documentation here:
https://slurm.schedmd.com/slurm.conf.html#OPT_SelectType_1
This page shows the new options that are available when using the
cons_tres plugin:
https://slurm.schedmd.com/cons_res.html#using_cons_tres
Note added: A little more details are in this Wiki page:
https://wiki.fysik.dtu.dk/Niflheim_system/Slurm_configuration/#upgrade-cons-res-to-cons-tres
/Ole
